Cracking a Boiled Egg in the Boiler and Other Days You Wish You Could Take Back
Originally Posted on April 13, 2012:
There are some days you wish you could take back after making a grand decision that turns out to look really dumb when your decision fails. It is important to think outside the box to break new ground as long as you bring common sense along for the ride.
It seemed that during the days when I was a summer help, and even when I was a laborer on Labor Crew that in order to be promoted you had to come up with one grand idea that set you apart from the others and that also failed miserably.
It was said that the electrical supervisor there before Leroy Godfrey (I can see his face, but his name escapes me. Jackie somebody), was promoted to that position after he caused the destruction of one of the Intake pump motors (a very large pump that can pump 189,000 gallons of water per minute).
To name a couple of minor “Faux Pas” (how do you pluralize that word? I don’t know — Faux Pauses?), let me start out with the least embarrassing and less dangerous and work my way to the most embarrassing and most dangerous of three different stories of someone thinking out of the box while leaving common sense somewhere behind and maybe wishing they could take back that day.
The first two stories both involve the Electrical Supervisors of two different Power Plants.
Tom Gibson, the Electrical Supervisor from our plant was trying to find a way to keep moisture out of the Bottom Ash Overflow Sump Pumps. This was a recurring problem that required a lot of man hours to repair. The bell shaped pump would have to be pulled, the motor would have to be disassembled and dried, and new seals would have to be put in the pump to keep it from leaking.
A Bottom Ash Overflow Sump Pump or BAOSP for Short
So, Tom Gibson decided that he was going to fill the motor and pump cavity with turbine oil. All electricians knew that oil used in turbines is an insulator so electrically it wouldn’t short anything out. But something in the back of your mind automatically says that this isn’t going to work.
I remember helping to fill the motor up with oil in the Maintenance shop and hooking up some motor leads from the nearby Maintenance shop 480 volt switchgear. Needless to say, as soon as the pump was turned on, it tripped the breaker and oil began leaking from the cable grommet.
That’s when common sense tells you that the all the oil causes too much drag on the rotor which will cause a 480 motor to trip very quickly. After removing some of the oil and trying it again with a larger breaker and still having the same result Tom was satisfied that this just wasn’t going to work.
The pump and motor was sent away to a nearby electric shop to be rewound and other ways were developed by the help of our top notch machinist genius Randy Dailey who came up with a positive air pressure way to keep water out of the Bottom Ash Overflow Sump Pump and motor (also known as the BAOSP). Not much harm done and Tom Gibson didn’t feel too bad for trying something that the rest of us sort of thought was mildly insane.
The next story was told to me by my dear friend Bob Kennedy when I was working at a Gas Powered Plant in Midwest City and he was my acting foreman and backed up by the rest of the electricians as they sat there nodding their heads as Bob told this story.
So I didn’t witness this myself. This one was a little more dangerous, but still thankfully, no one was hurt. Ellis Rooks, the Electrical Supervisor needed to bump test a 4200 Volt motor and wanted to do it in place (bump testing is when you switch something on and off quickly. Usually to see which way it turns). For some reason he was not able to use the existing cables, maybe because that was the reason the motor was offline. Because one of the cables had gone to ground.
So, he decided that since the motor only pulled 5 to 10 amps he could use #10 wire (the size wire in your home) and string three of them (for the three phases of the motor) from the main High Voltage switchgear across the turbine room floor over to the motor. Now, most electricians know how many amps different size wires can generally handle. It goes like this: #14 – 15 amps, #12 – 20 amps, #10 – 30 amps, #8 – 50 amps and on down (smaller numbers mean bigger wires).
So, Ellis thought that since the motor only pulls around 5 amps, and he only wanted to bump the motor (that is, turn it on and off quickly) to watch it rotate, he thought that even though there was normally three 3 – 0 cables (pronounced three aught for 3 zeroes, very large wire) wired to the motor, this would be all right because he was only going to bump it.
This works when you are using is 120 or 220 volts
Needless to say, but I will anyway, when the motor was bumped, all that was left of the #10 wires were three black streaks of carbon across the turbine room floor where the wire used to exist before it immediately vaporized.
You see, common sense tells you that 4200 volts times 5 amps = 21,000 watts of power. However, the starting amps on a motor like this may be around 50 to 100 amps, which would equal 210 to 420 Kilowatts of power (that is, 420,000 watts or more than 2/5 of a Megawatt). Thus vaporizing the small size 10 wire that is used to wire your house.
I think until the day that Ellis Rooks retired he was still trying to figure out where he went wrong. There must have been something defective with those wires.
All right. I have given you two relatively harmless stories and now the one about cracking the boiled egg in the boiler. This happened when I was still a janitor but was loaned to the Labor Crew during outages. When the boiler would come offline for an outage, the labor crew would go in the boiler and knock down clinkers and shake tubes to clean out clinkers that had built up around the boiler tubes in the intermediate pressure area of the boiler.
Clinkers are a hard buildup of ash that can become like large rocks, and when they fall and hit you on the head, depending on the size, can knock you to the floor, which makes wearing your hardhat a must. Your hardhat doesn’t help much when the clinkers falling from some 30 feet above hits you on your shoulder, so I always tried to suck my shoulders up under my hardhat (like a turtle pulling in his arms and legs) so that only my arms were left unprotected.
It wasn’t easy looking like a pole with no shoulders, but I tried my best. I think Fred Crocker the tallest and thinnest person on Labor Crew was the best at this. This is the Reheater area of the boiler in the diagram below:
Diagram of a boiler
Before we could get into the boiler to start shaking tubes, the dynamiters would go in there first and blow up the bigger clinkers. So, for a couple of days some times, at the beginning of an overhaul, you would hear someone come over the PA system about every 20 minutes saying, “Stand Clear of Number One Boiler, We’re Gonna Blast!!!” This became so common to hear over the years that unless you were up on the boiler helping out, you didn’t pay any attention to it.
This is something that is only done at a Coal-fired Power Plant because Gas Plants don’t create Ash that turns into Clinkers. Maybe some Soot, I don’t know, but not Ash. Which brings to mind a minor joke we played on Reginald Deloney one day when he came from a gas plant to work on overhaul. Reggie automatically reminded you of Richard Pryor. He had even developed a “Richard Pryor” way of talking.
Richard Pryor trying to look like Reggie Deloney
We were going to work on a Bowl Mill motor first thing, which is down next to the boiler structure in an enclosed area. We brought our roll around large toolbox and other equipment over to the motor. Andy Tubbs and Diana Brien were there with Reggie and I. I think Gary Wehunt was there with us also.
When someone came over the PA system saying, “Stand Clear of Number Two Boiler, We’re Gonna Blast”, all of us dropped everything and ran for the door as if it was an emergency. Reggie, not knowing what was going on ran like the dickens to get out in time only to find us outside laughing at the surprised look on his face.
Like this
Anyway. That wasn’t the day that someone wished they could take back, but I thought I would throw that one in anyway so that now Reggie will wish that he could take back that day.
When I was on Labor Crew, and we were waiting on the boiler for the dynamiters to blast all the large clinkers, the engineer in charge, Ed Hutchins decided that things would go a lot quicker if all the laborers would go into the boiler and shake tubes while the dynamiters were setting their charges (which wasn’t the normal procedure. Normally we waited until the dynamiters were all done). Then we would climb out when they were ready to blast, and then go back in. So, we did that.
All 10 or so of us climbed into the boiler, and went to work rattling boiler tubes until we heard someone yell, “Fire In The Hole!!!” Then we would all head for the one entrance and climb out and wait for the blast.
The extra time it took to get all of us in the boiler and back out again actually slowed everything down. We weren’t able to get much work done each time, and everyone spent most of their time climbing in and out instead of working, including the dynamiters.
So Ed had another brilliant idea. What if we stayed in the boiler while the dynamite exploded? Then we wouldn’t be wasting valuable time climbing in and out and really wouldn’t have to stop working at all.
Of course, common sense was telling us that we didn’t want to be in an enclosed boiler while several sticks worth of dynamite all exploded nearby, so the engineer decided to prove to us how safe it was by standing just inside the entrance of the boiler with his ear plugs in his ears while the dynamite exploded.
The dynamiters at first refused to set off the charges, but after Ed and the labor crew convinced them (some members on the labor crew were anxious for Ed to try out his “brilliant idea”) that there really wouldn’t be much lost if the worst happened, they went ahead and set off the dynamite.
Needless to say…. Ed came wobbling his way out of the boiler like a cracked boiled egg and said in a shaky voice, “I don’t think that would be such a good idea.” All of us on the Labor Crew said to each other, “..As if we needed him to tell us that.” I think that may be a day that Ed Hutchins would like to take back. The day he learned the real meaning of “Concussion”. I think he was promoted shortly after that and went to work in Oklahoma City at Corporate Headquarters.
Comments from Original Post:
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eideard April 21, 2012
When you have pallets double-stacked, you should only move them about with a pallet jack. The bottom pallet – and whatever is stacked on it – is thoroughly supported. And even if the pallet jack is powered, you aren’t likely to get in trouble with rapid acceleration.
As you would with a fork lift truck.
And the double stacked pallets are truck mirrors boxed for shipment to retailers. A couple hundred mirrors. And I dumped both pallets when I went to back up and turn into the warehouse aisle.
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jackcurtis May 5, 2012
Modern parables like these are much too good to waste! They should be included in every freshman Congressman’s Washington Welcome Kit when he first takes office and new ‘reminder’ versions again every time he wins an election. These are wonderful essays on unintended consequences, at which our Congress is among the best!
Comments from Previous repost:
Blowing it with Power Plant Retracts and Wall Blowers
Originally Posted February 23, 2013:
I never gave it much thought that when I was on the labor crew at the Coal-fired Power Plant in Oklahoma and we had to go in the boiler to shake the boiler tubes, that next to the portals where you would climb into the boiler there were long metal benches where you could sit just outside while you rested between moments when the dynamiters were getting ready to set off their explosives. (All right… right off the bat…. a run-on sentence the size of a paragraph… I can tell it’s going to be a long night).
To learn more about the dynamiters and shaking boiler tubes you can read the post: Cracking a boiled Egg in the Boiler. At other times while I was on the labor crew, I had heard these same benches making a tremendous sound that you could hear from a few landings away. It sounded like a large steam leak would sound, and at the same time, you could hear some kind of mechanical gears or something running and maybe a chain clanging. I didn’t really understand what the purpose these long benches served then, only that it was a good place to put the water jug and the box of fly ash suits to keep them from being stepped on.
It was after I had become an electrician that these long metal benches took on another meaning. I found out that they were called “Retracts”. I was told that they called them retracts because what they do is they run a long metal pipe into the boiler and then Retract it back. Ok. I thought it was rather odd to name something for a seemingly insignificant part of the function. After I understood what they were used for, I thought I could come up with a lot better name than “Retract”.
After all, we had equipment like “Honey Wagon” , “Coffin Houses”, “Clinker Grinder”. All really descriptive names. So, when Charles Foster told me to go with Diane Lucas (later Diane Brien) to work on 7R retract, I was expecting to go find some little lever going back and forth making a sound like “brrrr…oops…..brrr…..oops” as it swung back and forth. I would name something like that a “Retract”.
Actually, I would like to have been able to have kept a couple of Retracts in my pocket so that when I would smart off to Leroy Godfrey our Electrical Supervisor, I could pull one out and press the button and… “swoop”! Retracted!
So, what is a Retract? Well. In the story that I linked to above about the cracked egg in the boiler, I explained how when I was on the labor crew we had to go in the boiler and tie ropes to these hanging boiler tubes and then shake them back and forth to clean out the hard ash that had built up on them. Well, The Retract would sort of do that when the boiler was online. They would clean out the tubes in the reheat area of the boiler for the most part.
Diagram of a boiler
What it would do is this. It seemed like 7R retract was about 40 feet long (someone at the plant can correct me if I’m wrong about the length). When it would turn on, it would start rotating a pipe about that long and start pushing it into the boiler. Once the nozzle at the end of the pipe was in the boiler a couple of feet steam would start blasting down the pipe to the nozzle on the end that would shoot the steam out at right angles to the pipe. As the pipe rotated, it would be shooting out steam in a circular motion as the pipe slowly traversed into the boiler.
You see… My dentist told me a long time ago that I should Floss my teeth more if I didn’t want to wear dentures when I was older. By keeping the bits of food out from between my teeth, not only did my breath smell better, but my gums could remain healthy as well. So, I listened to him and started flossing. Retracts are kind of like that.
The Retracts were designed to clean out the areas of the boiler where the ash would build up the most causing the efficiency of the boiler to be degraded. So at certain times of the day, the Control Room operator will push a button on the side panel (at least that was what they used to do… now they probably click an icon on their computer) and it would start the cycle of the retracts going in and out one at a time cleaning out the boiler.
This is a drawing of a Steam retract for a boiler. I added the Chinese characters in the drawing for my Asian readers… no, not really. Sorry the picture is a little small
Anyway. I finally learned what those long metal benches were for and it fascinated me. I wonder how long it took before someone said what now would seem obvious…. “Hey. Instead of having to bring the boiler offline every week or so, how about if we just create this boiler flossing equipment that cleans the boiler out while it is online?”
It made me wonder about the other equipment around the plant. I’ll bet there was a good use for just about everything. And you know what? I think I was right. Instead of just putting all that equipment all over the place for us to play on like a big jungle gym, everything seemed to have a real good purpose.
After 4 years working as a summer help, and one more year as a janitor and on the labor crew, I thought I had seen just about everything in the plant. When I became an electrician, all of the sudden a whole new world opened up to me. Even that bench I had been sitting on turned into a monster machine that blasted away ash clinkers while the rest of us lay at home in our beds dreaming of chocolate, and dragons, and um… other things people dream about.
So, what about the Wall Blower? Well. These are like the retracts, only they are much smaller. they were placed around the walls of the main boiler at strategic locations to blast clinkers that may be building up along the main wall of the boiler. The area in the boiler diagram up above called the Water Wall.
For some reason (and I’m sure it’s a good one), From what was called floor 6 1/2, though it was actually about the 13th floor, on down was an area called the “Boiler Enclosure”. This meant that when you walked up to the boiler, you first had to go through a door and enter an enclosed area around the boiler. 7th floor and above, the boiler was outside.
I’ve been to plants where the entire boiler was enclosed, and I’ve seen some that didn’t look like any of it was enclosed, so I figure this was a happy median between the two. It meant that if it was raining outside and you needed to work on the boiler, it made a big difference how high up you had to go as to whether you needed your rain suit or not.
I mention this because one day I had to go by myself to work on a wall blower that was on the 6 and 1/2 floor just at the top of the boiler enclosure. The wall blower was naturally situated right next to the boiler. and all the heat generated from the boiler and the piping that came from the bowl mills that blew the coal into the furnace had made the area very hot. The Wall blower had been tripping the breaker and I was supposed to go fix it.
I brought an infrared temperature gun with me and found that the area where the wall blower was mounted was 160 degrees. Maybe it was that high because it was the middle of a hot summer day, and with everything else going on, all the heat trapped right at the top of the boiler enclosure, it had just turned into a huge easy-bake oven.
When I touched the metal door to the control panel on the side of the wall blower, it burned my fingers. I had to use my tee-shirt as a rag to keep from burning myself. I could only stand next to the wall blower for about 30 seconds and then I had to walk back over the doorway and breathe some fresh air and cool off for a minute before going back.
After opening the control panel, I could see what the problem was right away. The insulation on the wires going to the terminal block had the insulation dripping off the wires. The insulation was melting.
I went back to the shop and found some wire that was designed for high temperatures, because obviously someone had used the wrong type of wire when assembling this particular wall blower, given it’s location on the boiler.
High Temperature Wire
Because of the intense heat where I was standing when trying to rewire the wall blower, I was not able to take very big breaths. I had to breathe very shallow, or not at all. So, I would go up to the blower and work as fast as I could removing a screw or putting a new wire down and then I would go back to the doorway about 60 feet from the wall blower and cool off.
As I mentioned in the post about the Luxuries and Amenities of a Power Plant Labor Crew, when you are in this intense heat, your hardhat becomes soft like a baseball cap. In this case, I wasn’t in the heat long enough for this to happen, though I was sweating like a pig.
I had been doing this for a while when an operator showed up wondering what I was doing. His name was Jim Waller and he had been watching me from a distance. He said he was trying to figure out what I was up to because he would see me show up at the doorway and stand there for a while not doing anything, then turning around like I had forgotten something only to show up again about 1/2 minute later.
When he couldn’t figure out what I was doing on his own, he decided to take a closer look. I found him standing at the doorway waiting for me to arrive with a puzzled look on his face. I was tempted to just say nothing and just stand there and take a few breathes and then go back to the wall blower and continue my work.
I couldn’t do that however, when Jim asked me what I was doing. Jim was one of the nicest and most normal operators you could run across. I just couldn’t joke with him (as if he was Gene Day). So, I told him I was working on that wall blower over there, but that it was so hot that I had to keep coming to the doorway to cool off.
Jim Waller had come to work for the electric company a month before I began my last summer as summer help in 1982. At the time that I was working on the wall blower in 1984 I was just about to become 24 years old, and a couple of months later, he was going to be 29. Like Gene Day, you instantly knew when you saw Jim that he you liked him. He sort of had that Jim Nabors kind of smile.
Jim Waller reminded me of Jim Nabors when he was younger. He had the same likable demeanor.
Unlike Gene Day, I never felt like playing a joke on Jim. For some reason, Jim just seemed like too nice of a guy. Where Gene had a slight sort of hidden orneriness about him, Jim was just purely a “good guy”.
This past Christmas eve, five days before Jim turned 57 years old, he passed away after a sudden illness. When the guys at the power plant told me about it, I was sad for their loss and for his family. For Jim, on the other hand…. I think he has always had one foot in heaven from the day I met him. I think he finally stepped the rest of the way through the gate.
For someone like me. If I am ever able to make it to heaven, I’m sure there will be a big to-do about it, because someone would have won the pot and I’m sure the odds would have been high against it. However, the day Jim arrived, it was probably more like “business as usual”. — “Oh, Jim’s arrived….. Like no one didn’t see that coming….” If I could say something to Jim now (and being Catholic, I’m allowed to do that), I would ask Jim, “Put in a good word for all the Power Plant Men!” Because I know that Jim’s word is as good as gold. Here is a real picture of Jim, a true Power Plant Man:
Jim Waller, a True Power Plant Man!
Comment from the original post:
Good post on Jim, Kevin. Now, what is a “normal operator”? 🙂
I remember doing several jobs in super hot areas where I had to wear a heavy coat and gloves to keep from getting burned. Had to take off rings and wrist watch too. Needed to take off my glasses, but then I couldn’t see.
Cracking a Boiled Egg in the Boiler and Other Days You Wish You Could Take Back
Originally Posted on April 13, 2012:
There are some days you wish you could take back after making a grand decision that turns out to look really dumb when your decision fails. It is important to think outside the box to break new ground as long as you bring common sense along for the ride. It seemed that during the days when I was a summer help, and even when I was a laborer on Labor Crew that in order to be promoted you had to come up with one grand idea that set you apart from the others and that also failed miserably.
It was said that the electrical supervisor there before Leroy Godfrey (I can see his face, but his name escapes me), was promoted to that position after he caused the destruction of one of the Intake pump motors (a very large pump that can pump 189,000 gallons of water per minute).
To name a couple of minor “Faux Pas” (how do you pluralize that word? I don’t know), let me start out with the least embarrassing and less dangerous and work my way to the most embarrassing and most dangerous of three different stories of someone thinking out of the box while leaving common sense somewhere behind and maybe wishing they could take back that day.
The first two stories both involve the Electrical Supervisors of two different Power Plants.
Tom Gibson, the Electrical Supervisor from our plant was trying to find a way to keep moisture out of the Bottom Ash Overflow Sump Pumps. This was a reoccurring problem that required a lot of man hours to repair. The bell shaped pump would have to be pulled, the motor would have to be disassembled and dried, and new seals would have to be put in the pump to keep it from leaking.
A Bottom Ash Overflow Sump Pump or BAOSP for Short
So, Tom Gibson decided that he was going to fill the motor and pump cavity with turbine oil. All electricians knew that oil used in turbines is an insulator so electrically it wouldn’t short anything out. But something in the back of your mind automatically says that this isn’t going to work. I remember helping to fill the motor up with oil in the Maintenance shop and hooking up some motor leads from the nearby Maintenance shop 480 volt switchgear. Needless to say, as soon as the pump was turned on, it tripped the breaker and oil began leaking from the cable grommet.
That’s when common sense tells you that the all the oil causes too much drag on the rotor which will cause a 480 motor to trip very quickly. After removing some of the oil and trying it again with a larger breaker and still having the same result Tom was satisfied that this just wasn’t going to work. The pump and motor was sent away to a nearby electric shop to be rewound and other ways were developed by the help of our top notch machinist genius Randy Dailey who came up with a positive air pressure way to keep water out of the Bottom Ash Overflow Sump Pump and motor (also known as the BAOSP). Not much harm done and Tom Gibson didn’t feel too bad for trying something that the rest of us sort of thought was mildly insane.
The next story was told to me by my dear friend Bob Kennedy when I was working at a Gas Powered Plant in Midwest City and he was my acting foreman. So I didn’t witness this myself. This one was a little more dangerous, but still thankfully, no one was hurt. Ellis Rooks, the Electrical Supervisor needed to bump test a 4200 Volt motor and wanted to do it in place. For some reason he was not able to use the existing cables, maybe because that was the reason the motor was offline. Because one of the cables had gone to ground.
So, he decided that since the motor only pulled 5 to 10 amps he could use #10 wire and string three of them (for the three phases of the motor) from the main High Voltage switchgear across the turbine room floor over to the motor. Now, most electricians know how many amps different size wires can generally handle. It goes like this: #14 – 15 amps, #12 – 20 amps, #10 – 30 amps, #8 – 50 amps and on down (smaller numbers mean bigger wires).
So, Ellis thought that since the motor only pulls around 5 amps, and he only wanted to bump the motor (that is, turn it on and off quickly) to watch it rotate, he thought that even though there was normally three 3 – 0 cables (pronounced three aught for 3 zeroes, very large wire) wired to the motor, this would be all right because he was only going to bump it.
This works when you are using is 120 or 220 volts
Needless to say, but I will anyway, when the motor was bumped, all that was left of the #10 wires were three black streaks of carbon across the turbine room floor where the wire used to exist before it immediately vaporized. You see, common sense tells you that 4200 volts times 5 amps = 21,000 watts of power. However, the starting amps on a motor like this may be around 50 to 100 amps, which would equal 210 to 420 Kilowatts of power (or about 1/5 to 2/5 of a Megawatt). Thus vaporizing the small size 10 wire that is used to wire your house.
All right. I have given you two relatively harmless stories and now the one about cracking the boiled egg in the boiler. This happened when I was still a janitor but was loaned to the Labor Crew during outages. When the boiler would come offline for an outage, the labor crew would go in the boiler and knock down clinkers and shake tubes to clean out clinkers that had built up around the boiler tubes in the intermediate pressure area of the boiler.
Clinkers are a hard buildup of ash that can become like large rocks, and when they fall and hit you on the head, depending on the size, can knock you to the floor, which makes wearing your hardhat a must. Your hardhat doesn’t help much when the clinkers falling from some 30 feet above hits you on your shoulder, so I always tried to suck my shoulders up under my hardhat (like a turtle pulling in his arms and legs) so that only my arms were left unprotected.
It wasn’t easy looking like a pole with no shoulders, but I tried my best. I think Fred Crocker the tallest and thinnest person on Labor Crew was the best at this. This is the Reheater area of the boiler in the diagram below:
Diagram of a boiler
Before we could get into the boiler to start shaking tubes, the dynamiters would go in there first and blow up the bigger clinkers. So, for a couple of days some times, at the beginning of an overhaul, you would hear someone come over the PA system about every 20 minutes saying, “Stand Clear of Number One Boiler, We’re Gonna Blast!!!” This became so common to hear over the years that unless you were up on the boiler helping out, you didn’t pay any attention to it.
This is something that is only done at a Coal-fired Power Plant because Gas Plants don’t create Ash that turns into Clinkers. Maybe some Soot, I don’t know, but not Ash. Which brings to mind a minor joke we played on Reginald Deloney one day when he came from a gas plant to work on overhaul. Reggie automatically reminded you of Richard Pryor. He had even developed a “Richard Pryor” way of talking.
Richard Pryor trying to look like Reggie Deloney
We were going to work on a Bowl Mill motor first thing, which is down next to the boiler structure in an enclosed area. We brought our large toolbox and other equipment over to the motor. Andy Tubbs and Diana Brien were there with Reggie and I. I think Gary Wehunt was there with us also.
When someone came over the PA system saying, “Stand Clear of Number Two Boiler, We’re Gonna Blast”, all of us dropped everything and ran for the door as if it was an emergency. Reggie, not knowing what was going on ran like the dickens to get out in time only to find us outside laughing at the surprised look on his face.
Like this
Anyway. That wasn’t the day that someone wished they could take back, but I thought I would throw that one in anyway so that now Reggie will wish that he could take back that day.
When I was on Labor Crew, and we were waiting on the boiler for the dynamiters to blast all the large clinkers, the engineer in charge, Ed Hutchins decided that things would go a lot quicker if all the laborers would go into the boiler and shake tubes while the dynamiters were setting their charges. Then we would climb out when they were ready to blast, and then go back in. So, we did that. All 10 or so of us climbed into the boiler, and went to work rattling boiler tubes until we heard someone yell, “Fire In The Hole!!!” Then we would all head for the one entrance and climb out and wait for the blast.
The extra time it took to get all of us in the boiler and back out again actually slowed everything down. We weren’t able to get much work done each time, and everyone spent most of their time climbing in and out instead of working, including the dynamiters. So Ed had another brilliant idea. What if we stayed in the boiler while the dynamite exploded? Then we wouldn’t be wasting valuable time climbing in and out and really wouldn’t have to stop working at all.
Of course, common sense was telling us that we didn’t want to be in an enclosed boiler while several sticks worth of dynamite all exploded nearby, so the engineer decided to prove to us how safe it was by standing just inside the entrance of the boiler with his ear plugs in his ears while the dynamite exploded. The dynamiters at first refused to set off the charges, but after Ed and the labor crew convinced them (some members on the labor crew were anxious for Ed to try out his “brilliant idea) that there really wouldn’t be much lost if the worst happened, they went ahead and set off the dynamite.
Needless to say…. Ed came wobbling his way out of the boiler like a cracked boiled egg and said in a shaky voice, “I don’t think that would be such a good idea.” All of us on the Labor Crew said to each other, “..As if we needed him to tell us that.” I think that may be a day that Ed Hutchins would like to take back. The day he learned the real meaning of “Concussion”. I think he was promoted shortly after that and went to work in Oklahoma City at Corporate Headquarters.
Comments from Original Post:
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eideard April 21, 2012
When you have pallets double-stacked, you should only move them about with a pallet jack. The bottom pallet – and whatever is stacked on it – is thoroughly supported. And even if the pallet jack is powered, you aren’t likely to get in trouble with rapid acceleration.
As you would with a fork lift truck.
And the double stacked pallets are truck mirrors boxed for shipment to retailers. A couple hundred mirrors. And I dumped both pallets when I went to back up and turn into the warehouse aisle.
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jackcurtis May 5, 2012
Modern parables like these are much too good to waste! They should be included in every freshman Congressman’s Washington Welcome Kit when he first takes office and new ‘reminder’ versions again every time he wins an election. These are wonderful essays on unintended consequences, at which our Congress is among the best!
Comments from Previous repost:
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I worked with Ed on the Precipitator control replacement project (84 controls X 2) in 2006 I think. He was getting ready to retire at the time. He was a good engineer and a tough customer. I was working for the control supplier and those 168 controls were the first installation of a brand new control design. I had lead the design team for the controls and this was the culmination of our work. I spend more days and nights than I can remember going up and down the aisles of controls loading software fixes into the processors! Anyway, great people at the plant and great memories… including a rapper control cabinet that took the express route to the ground elevation from the precip roof! (ouch, it really is the sudden stop that gets you!)
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Thanks for the comment John! It’s good to hear about improvements to the Precipitator and the control rooms I used to call home. I spend many weekends walking back and forth through those control rooms.
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OMG – The very thought of a group staying in the boiler when the dynamite went off! Thank goodness THAT didn’t happen. I felt the tension just reading that bit. I’m glad Ed came out of it all right.
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Blowing it with Power Plant Retracts and Wall Blowers
Originally Posted February 23, 2013:
I never gave it much thought that when I was on the labor crew at the Coal-fired Power Plant in Oklahoma and we had to go in the boiler to shake the boiler tubes, that next to the portals where you would climb into the boiler there were long metal benches where you could sit just outside while you rested between moments when the dynamiters were getting ready to set off their explosives. (All right… right off the bat…. a run-on sentence the size of a paragraph… I can tell it’s going to be a long night).
To learn more about the dynamiters and shaking boiler tubes you can read the post: Cracking a boiled Egg in the Boiler. At other times while I was on the labor crew, I had heard these same benches making a tremendous sound that you could hear from a few landings away. It sounded like a large steam leak would sound, and at the same time, you could hear some kind of mechanical gears or something running and maybe a chain clanging. I didn’t really understand what the purpose these long benches served then, only that it was a good place to put the water jug and the box of fly ash suits to keep them from being stepped on.
It was after I had become an electrician that these long metal benches took on another meaning. I found out that they were called “Retracts”. I was told that they called them retracts because what they do is they run a long metal pipe into the boiler and then Retract it back. Ok. I thought it was rather odd to name something for a seemingly insignificant part of the function. After I understood what they were used for, I thought I could come up with a lot better name than “Retract”.
After all, we had equipment like “Honey Wagon” , “Coffin Houses”, “Clinker Grinder”. All really descriptive names. So, when Charles Foster told me to go with Diane Lucas (later Diane Brien) to work on 7R retract, I was expecting to go find some little lever going back and forth making a sound like “brrrr…oops…..brrr…..oops” as it swung back and forth. I would name something like that a “Retract”.
Actually, I would like to have been able to have kept a couple of Retracts in my pocket so that when I would smart off to Leroy Godfrey our Electrical Supervisor, I could pull one out and press the button and… “swoop”! Retracted!
So, what is a Retract? Well. In the story that I linked to above about the cracked egg in the boiler, I explained how when I was on the labor crew we had to go in the boiler and tie ropes to these hanging boiler tubes and then shake them back and forth to clean out the hard ash that had built up on them. Well, The Retract would sort of do that when the boiler was online. They would clean out the tubes in the reheat area of the boiler for the most part.
Diagram of a boiler
What it would do is this. It seemed like 7R retract was about 40 feet long (someone at the plant can correct me if I’m wrong about the length). When it would turn on, it would start rotating a pipe about that long and start pushing it into the boiler. Once the nozzle at the end of the pipe was in the boiler a couple of feet steam would start blasting down the pipe to the nozzle on the end that would shoot the steam out at right angles to the pipe. As the pipe rotated, it would be shooting out steam in a circular motion as the pipe slowly traversed into the boiler.
You see… My dentist told me a long time ago that I should Floss my teeth more if I didn’t want to wear dentures when I was older. By keeping the bits of food out from between my teeth, not only did my breath smell better, but my gums could remain healthy as well. So, I listened to him and started flossing. Retracts are kind of like that.
The Retracts were designed to clean out the areas of the boiler where the ash would build up the most causing the efficiency of the boiler to be degraded. So at certain times of the day, the Control Room operator will push a button on the side panel (at least that was what they used to do… now they probably click an icon on their computer) and it would start the cycle of the retracts going in and out one at a time cleaning out the boiler.
This is a drawing of a Steam retract for a boiler. I added the Chinese characters in the drawing for my Asian readers… no, not really. Sorry the picture is a little small
Anyway. I finally learned what those long metal benches were for and it fascinated me. I wonder how long it took before someone said what now would seem obvious…. “Hey. Instead of having to bring the boiler offline every week or so, how about if we just create this boiler flossing equipment that cleans the boiler out while it is online?”
It made me wonder about the other equipment around the plant. I’ll bet there was a good use for just about everything. And you know what? I think I was right. Instead of just putting all that equipment all over the place for us to play on like a big jungle gym, everything seemed to have a real good purpose.
After 4 years working as a summer help, and one more year as a janitor and on the labor crew, I thought I had seen just about everything in the plant. When I became an electrician, all of the sudden a whole new world opened up to me. Even that bench I had been sitting on turned into a monster machine that blasted away ash clinkers while the rest of us lay at home in our beds dreaming of chocolate, and dragons, and um… other things people dream about.
So, what about the Wall Blower? Well. These are like the retracts, only they are much smaller. they were placed around the walls of the main boiler at strategic locations to blast clinkers that may be building up along the main wall of the boiler. The area in the boiler diagram up above called the Water Wall.
For some reason (and I’m sure it’s a good one), From what was called floor 6 1/2, though it was actually about the 13th floor, on down was an area called the “Boiler Enclosure”. This meant that when you walked up to the boiler, you first had to go through a door and enter an enclosed area around the boiler. 7th floor and above, the boiler was outside.
I’ve been to plants where the entire boiler was enclosed, and I’ve seen some that didn’t look like any of it was enclosed, so I figure this was a happy median between the two. It meant that if it was raining outside and you needed to work on the boiler, it made a big difference how high up you had to go as to whether you needed your rain suit or not.
I mention this because one day I had to go by myself to work on a wall blower that was on the 6 and 1/2 floor just at the top of the boiler enclosure. The wall blower was naturally situated right next to the boiler. and all the heat generated from the boiler and the piping that came from the bowl mills that blew the coal into the furnace had made the area very hot. The Wall blower had been tripping the breaker and I was supposed to go fix it.
I brought an infrared temperature gun with me and found that the area where the wall blower was mounted was 160 degrees. Maybe it was that high because it was the middle of a hot summer day, and with everything else going on, all the heat trapped right at the top of the boiler enclosure, it had just turned into a huge easy-bake oven.
When I touched the metal door to the control panel on the side of the wall blower, it burned my fingers. I had to use my tee-shirt as a rag to keep from burning myself. I could only stand next to the wall blower for about 30 seconds and then I had to walk back over the doorway and breathe some fresh air and cool off for a minute before going back.
After opening the control panel, I could see what the problem was right away. The insulation on the wires going to the terminal block had the insulation dripping off the wires. The insulation was melting.
I went back to the shop and found some wire that was designed for high temperatures, because obviously someone had used the wrong type of wire when assembling this particular wall blower, given it’s location on the boiler.
High Temperature Wire
Because of the intense heat where I was standing when trying to rewire the wall blower, I was not able to take very big breaths. I had to breathe very shallow, or not at all. So, I would go up to the blower and work as fast as I could removing a screw or putting a new wire down and then I would go back to the doorway about 60 feet from the wall blower and cool off.
As I mentioned in the post about the Luxuries and Amenities of a Power Plant Labor Crew, when you are in this intense heat, your hardhat becomes soft like a baseball cap. In this case, I wasn’t in the heat long enough for this to happen, though I was sweating like a pig.
I had been doing this for a while when an operator showed up wondering what I was doing. His name was Jim Waller and he had been watching me from a distance. He said he was trying to figure out what I was up to because he would see me show up at the doorway and stand there for a while not doing anything, then turning around like I had forgotten something only to show up again about 1/2 minute later.
When he couldn’t figure out what I was doing on his own, he decided to take a closer look. I found him standing at the doorway waiting for me to arrive with a puzzled look on his face. I was tempted to just say nothing and just stand there and take a few breathes and then go back to the wall blower and continue my work.
I couldn’t do that however, when Jim asked me what I was doing. Jim was one of the nicest and most normal operators you could run across. I just couldn’t joke with him. So, I told him I was working on that wall blower over there, but that it was so hot that I had to keep coming to the doorway to cool off.
Jim Waller had come to work for the electric company a month before I began my last summer as summer help in 1982. At the time that I was working on the wall blower in 1984 I was just about to become 24 years old, and a couple of months later, he was going to be 29. Like Gene Day, you instantly knew when you saw Jim that he you liked him. He sort of had that Jim Nabors kind of smile.
Jim Waller reminded me of Jim Nabors when he was younger. He had the same likable demeanor.
Unlike Gene Day, I never felt like playing a joke on Jim. For some reason, Jim just seemed like too nice of a guy. Where Gene had a slight sort of hidden orneriness about him, Jim was just purely a “good guy”.
This past Christmas eve, five days before Jim turned 57 years old, he passed away after a sudden illness. When the guys at the power plant told me about it, I was sad for their loss and for his family. For Jim, on the other hand…. I think he has always had one foot in heaven from the day I met him. I think he finally stepped the rest of the way through the gate.
For someone like me. If I am ever able to make it to heaven, I’m sure there will be a big to-do about it, because someone would have won the pot and I’m sure the odds would have been high against it. However, the day Jim arrived, it was probably more like “business as usual”. — “Oh, Jim’s arrived….. Like no one didn’t see that coming….” If I could say something to Jim now (and being Catholic, I’m allowed to do that), I would ask Jim, “Put in a good word for all the Power Plant Men!” Because I know that Jim’s word is as good as gold. Here is a real picture of Jim, a true Power Plant Man:
Jim Waller, a True Power Plant Man!
Comment from the original post:
Good post on Jim, Kevin. Now, what is a “normal operator”? 🙂
I remember doing several jobs in super hot areas where I had to wear a heavy coat and gloves to keep from getting burned. Had to take off rings and wrist watch too. Needed to take off my glasses, but then I couldn’t see.
Cracking a Boiled Egg in the Boiler and Other Days You Wish You Could Take Back
Originally Posted on April 13, 2012:
There are some days you wish you could take back after making a grand decision that turns out to look really dumb when your decision fails. It is important to think outside the box to break new ground as long as you bring common sense along for the ride. It seemed that during the days when I was a summer help, and even when I was a laborer on Labor Crew that in order to be promoted you had to come up with one grand idea that set you apart from the others and that also failed miserably.
It was said that the electrical supervisor there before Leroy Godfrey (I can see his face, but his name escapes me), was promoted to that position after he caused the destruction of one of the Intake pump motors (a very large pump that can pump 189,000 gallons of water per minute).
To name a couple of minor “Faux Pas” (how do you pluralize that word? I don’t know), let me start out with the least embarrassing and less dangerous and work my way to the most embarrassing and most dangerous of three different stories of someone thinking out of the box while leaving common sense somewhere behind and maybe wishing they could take back that day.
The first two stories both involve the Electrical Supervisors of two different Power Plants.
Tom Gibson, the Electrical Supervisor from our plant was trying to find a way to keep moisture out of the Bottom Ash Overflow Sump Pumps. This was a reoccurring problem that required a lot of man hours to repair. The bell shaped pump would have to be pulled, the motor would have to be disassembled and dried, and new seals would have to be put in the pump to keep it from leaking.
A Bottom Ash Overflow Sump Pump or BAOSP for Short
So, Tom Gibson decided that he was going to fill the motor and pump cavity with turbine oil. All electricians knew that oil used in turbines is an insulator so electrically it wouldn’t short anything out. But something in the back of your mind automatically says that this isn’t going to work. I remember helping to fill the motor up with oil in the Maintenance shop and hooking up some motor leads from the nearby Maintenance shop 480 volt switchgear. Needless to say, as soon as the pump was turned on, it tripped the breaker and oil began leaking from the cable grommet. That’s when common sense tells you that the all the oil causes too much drag on the rotor which will cause a 480 motor to trip very quickly. After removing some of the oil and trying it again with a larger breaker and still having the same result Tom was satisfied that this just wasn’t going to work. The pump and motor was sent away to a nearby electric shop to be rewound and other ways were developed by the help of our top notch machinist genius Randy Dailey who came up with a positive air pressure way to keep water out of the Bottom Ash Overflow Sump Pump and motor (also known as the BAOSP). Not much harm done and Tom Gibson didn’t feel too bad for trying something that the rest of us sort of thought was mildly insane.
The next story was told to me by my dear friend Bob Kennedy when I was working at a Gas Powered Plant in Midwest City and he was my acting foreman. So I didn’t witness this myself. This one was a little more dangerous, but still thankfully, no one was hurt. Ellis Rooks, the Electrical Supervisor needed to bump test a 4200 Volt motor and wanted to do it in place. For some reason he was not able to use the existing cables, maybe because that was the reason the motor was offline. Because one of the cables had gone to ground. So, he decided that since the motor only pulled 5 to 10 amps he could use #10 wire and string three of them (for the three phases of the motor) from the main High Voltage switchgear across the turbine room floor over to the motor. Now, most electricians know how many amps different size wires can generally handle. It goes like this: #14 – 15 amps, #12 – 20 amps, #10 – 30 amps, #8 – 50 amps and on down (smaller numbers mean bigger wires). So, Ellis thought that since the motor only pulls around 5 amps, and he only wanted to bump the motor (that is, turn it on and off quickly) to watch it rotate, he thought that even though there was normally a 3 – 0 cable (pronounced three aught for 3 zeroes, very large wire), this would be ok because he was only going to bump it.
This works when you are using is 120 or 220 volts
Needless to say, but I will anyway, when the motor was bumped, all that was left were three black streaks of carbon across the turbine room floor where the wire used to exist before it immediately vaporized. You see, common sense tells you that 4200 volts times 5 amps = 21,000 watts of power. However, the starting amps on a motor like this may be around 50 to 100 amps, which would equal 210 to 420 Kilowatts of power (or about 1/5 to 2/5 of a Megawatt). Thus vaporizing the small size 10 wire that is used to wire your house.
All right. I have given you two relatively harmless stories and now the one about cracking the boiled egg in the boiler. This happened when I was still a janitor but was loaned to the Labor Crew during outages. When the boiler would come offline for an outage, the labor crew would go in the boiler and knock down clinkers and shake tubes to clean out clinkers that had built up around the boiler tubes in the intermediate pressure area of the boiler. Clinkers are a hard buildup of ash that can become like large rocks, and when they fall and hit you on the head, depending on the size, can knock you to the floor, which makes wearing your hardhat a must. Your hardhat doesn’t help much when the clinkers falling from some 30 feet above hits you on your shoulder, so I always tried to suck my shoulders up under my hardhat (like a turtle pulling in his arms and legs) so that only my arms were left unprotected. It wasn’t easy looking like a pole with no shoulders, but I tried my best. I think Fred Crocker the tallest and thinnest person on Labor Crew was the best at this. This is the Reheater area of the boiler in the diagram below:
Diagram of a boiler
Before we could get into the boiler to start shaking tubes, the dynamiters would go in there first and blow up the bigger clinkers. So, for a couple of days some times, at the beginning of an overhaul, you would hear someone come over the PA system about every 20 minutes saying, “Stand Clear of Number One Boiler, We’re Gonna Blast!!!” This became so common to hear over the years that unless you were up on the boiler helping out, you didn’t pay any attention to it.
This is something that is only done at a Coal-fired Power Plant because Gas Plants don’t create Ash that turns into Clinkers. Maybe some Soot, I don’t know, but not Ash. Which brings to mind a minor joke we played on Reginald Deloney one day when he came from a gas plant to work on overhaul. Reggie automatically reminded you of Richard Pryor. He had even developed a “Richard Pryor” way of talking.
Richard Pryor trying to look like Reggie Deloney
We were going to work on a Bowl Mill motor first thing, which is down next to the boiler structure in an enclosed area. We brought our large toolbox and other equipment over to the motor. Andy Tubbs and Diana Brien were there with Reggie and I. I think Gary Wehunt was there with us also. When someone came over the PA system saying, “Stand Clear of Number Two Boiler, We’re Gonna Blast”, all of us dropped everything and ran for the door as if it was an emergency. Reggie, not knowing what was going on ran like the dickens to get out in time only to find us outside laughing at the surprised look on his face.
Like this
Anyway. That wasn’t the day that someone wished they could take back, but I thought I would throw that one in anyway so that now Reggie will wish that he could take back that day.
When I was on Labor Crew, and we were waiting on the boiler for the dynamiters to blast all the large clinkers, the engineer in charge, Ed Hutchins decided that things would go a lot quicker if all the laborers would go into the boiler and shake tubes while the dynamiters were setting their charges. Then we would climb out when they were ready to blast, and then go back in. So, we did that. All 10 or so of us climbed into the boiler, and went to work rattling boiler tubes until we heard someone yell, “Fire In The Hole!!!” Then we would all head for the one entrance and climb out and wait for the blast.
The extra time it took to get all of us in the boiler and back out again actually slowed everything down. We weren’t able to get much work done each time, and everyone spent most of their time climbing in and out instead of working, including the dynamiters. So Ed had another brilliant idea. What if we stayed in the boiler while the dynamite exploded? Then we wouldn’t be wasting valuable time climbing in and out and really wouldn’t have to stop working at all.
Of course, common sense was telling us that we didn’t want to be in an enclosed boiler while several sticks worth of dynamite all exploded nearby, so the engineer decided to prove to us how safe it was by standing just inside the entrance of the boiler with his ear plugs in his ears while the dynamite exploded. The dynamiters at first refused to set off the charges, but after Ed and the labor crew convinced them (some members on the labor crew were anxious for Ed to try out his “brilliant idea) that there really wouldn’t be much lost if the worst happened, they went ahead and set off the dynamite.
Needless to say…. Ed came wobbling his way out of the boiler like a cracked boiled egg and said in a shaky voice, “I don’t think that would be such a good idea.” All of us on the Labor Crew said to each other, “..As if we needed him to tell us that.” I think that may be a day that Ed Hutchins would like to take back. The day he learned the real meaning of “Concussion”. I think he was promoted shortly after that and went to work in Oklahoma City at Corporate Headquarters.
Comments from Original Post:
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eideard April 21, 2012
When you have pallets double-stacked, you should only move them about with a pallet jack. The bottom pallet – and whatever is stacked on it – is thoroughly supported. And even if the pallet jack is powered, you aren’t likely to get in trouble with rapid acceleration.
As you would with a fork lift truck.
And the double stacked pallets are truck mirrors boxed for shipment to retailers. A couple hundred mirrors. And I dumped both pallets when I went to back up and turn into the warehouse aisle.
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jackcurtis May 5, 2012
Modern parables like these are much too good to waste! They should be included in every freshman Congressman’s Washington Welcome Kit when he first takes office and new ‘reminder’ versions again every time he wins an election. These are wonderful essays on unintended consequences, at which our Congress is among the best!
Comments from Previous repost:
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I worked with Ed on the Precipitator control replacement project (84 controls X 2) in 2006 I think. He was getting ready to retire at the time. He was a good engineer and a tough customer. I was working for the control supplier and those 168 controls were the first installation of a brand new control design. I had lead the design team for the controls and this was the culmination of our work. I spend more days and nights than I can remember going up and down the aisles of controls loading software fixes into the processors! Anyway, great people at the plant and great memories… including a rapper control cabinet that took the express route to the ground elevation from the precip roof! (ouch, it really is the sudden stop that gets you!)
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Thanks for the comment John! It’s good to hear about improvements to the Precipitate and the control rooms I used to call home.
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OMG – The very thought of a group staying in the boiler when the dynamite went off! Thank goodness THAT didn’t happen. I felt the tension just reading that bit. I’m glad Ed came out of it all right.
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Blowing it with Power Plant Retracts and Wall Blowers
Originally Posted February 23, 2013:
I never gave it much thought that when I was on the labor crew at the Coal-fired Power Plant in Oklahoma and we had to go in the boiler to shake the boiler tubes, that next to the portals where you would climb into the boiler there were long metal benches where you could sit just outside while you rested between moments when the dynamiters were getting ready to set off their explosives. (All right… right off the bat…. a run-on sentence the size of a paragraph… I can tell it’s going to be a long night).
To learn more about the dynamiters and shaking boiler tubes you can read the post: Cracking a boiled Egg in the Boiler. At other times while I was on the labor crew, I had heard these same benches making a tremendous sound that you could hear from a few landings away. It sounded like a large steam leak would sound, and at the same time, you could hear some kind of mechanical gears or something running and maybe a chain clanging. I didn’t really understand what the purpose of these long benches served then, only that it was a good place to put the water jug and the box of fly ash suits to keep them from being stepped on.
It was after I had become an electrician that these long metal benches took on another meaning. I found out that they were called “Retracts”. I was told that they called them retracts because what they do is they run a long metal pipe into the boiler and then Retract it back. Ok. I thought it was rather odd to name something for a seemingly insignificant part of the function. After I understood what they were used for, I thought I could come up with a lot better name than “Retract”.
After all, we had equipment like “Honey Wagon” , “Coffin Houses”, “Clinker Grinder”. All really descriptive names. So, when Charles Foster told me to go with Diane Lucas (later Diane Brien) to work on 7R retract, I was expecting to go find some little lever going back and forth making a sound like “brrrr…oops…..brrr…..oops” as it swung back and forth. I would name something like that a “Retract”.
Actually, I would like to have been able to have kept a couple of Retracts in my pocket so that when I would smart off to Leroy Godfrey our Electrical Supervisor, I could pull one out and press the button and… “swoop”! Retracted!
So, what is a Retract? Well. In the story that I linked to above about the cracked egg in the boiler, I explained how when I was on the labor crew we had to go in the boiler and tie ropes to these hanging boiler tubes and then shake them back and forth to clean out the hard ash that had built up on them. Well, The Retract would sort of do that when the boiler was online. They would clean out the tubes in the reheat area of the boiler for the most part.
Diagram of a boiler
What it would do is this. It seemed like 7R retract was about 40 feet long (someone at the plant can correct me if I’m wrong about the length). When it would turn on, it would start rotating a pipe about that long and start pushing it into the boiler. Once the nozzle at the end of the pipe was in the boiler a couple of feet steam would start blasting down the pipe to the nozzle on the end that would shoot the steam out at right angles to the pipe. As the pipe rotated, it would be shooting out steam in a circular motion as the pipe slowly traversed into the boiler.
You see… My dentist told me a long time ago that I should Floss my teeth more if I didn’t want to wear dentures when I was older. By keeping the bits of food out from between my teeth, not only did my breath smell better, but my gums could remain healthy as well. So, I listened to him and started flossing. Retracts are kind of like that.
The Retracts were designed to clean out the areas of the boiler where the ash would build up the most causing the efficiency of the boiler to be degraded. So at certain times of the day, the Control Room operator will push a button on the side panel (at least that was what they used to do… now they probably click an icon on their computer) and it would start the cycle of the retracts going in and out one at a time cleaning out the boiler.
This is a drawing of a Steam retract for a boiler. I added the Chinese characters in the drawing for my Asian readers… no, not really. Sorry the picture is a little small
Anyway. I finally learned what those long metal benches were for and it fascinated me. I wonder how long it took before someone said what now would seem obvious…. “Hey. Instead of having to bring the boiler offline every week or so, how about if we just create this boiler flossing equipment that cleans the boiler out while it is online?”
It made me wonder about the other equipment around the plant. I’ll bet there was a good use for just about everything. And you know what? I think I was right. Instead of just putting all that equipment all over the place for us to play on like a big jungle gym, everything seemed to have a real good purpose.
After 4 years working as a summer help, and one more year as a janitor and on the labor crew, I thought I had seen just about everything in the plant. When I became an electrician, all of the sudden a whole new world opened up to me. Even that bench I had been sitting on turned into a monster machine that blasted away ash clinkers while the rest of us lay at home in our beds dreaming of chocolate, and dragons, and um… other things people dream about.
So, what about the Wall Blower? Well. These are like the retracts, only they are much smaller. they were placed around the walls of the main boiler at strategic locations to blast clinkers that may be building up along the main wall of the boiler. The area in the boiler diagram up above called the Water Wall.
For some reason (and I’m sure it’s a good one), From what was called floor 6 1/2, though it was actually about the 13th floor, on down was an area called the “Boiler Enclosure”. This meant that when you walked up to the boiler, you first had to go through a door and enter an enclosed area around the boiler. 7th floor and above, the boiler was outside.
I’ve been to plants where the entire boiler was enclosed, and I’ve seen some that didn’t look like any of it was enclosed, so I figure this was a happy median between the two. It meant that if it was raining outside and you needed to work on the boiler, it made a big difference how high up you had to go as to whether you needed your rain suit or not.
I mention this because one day I had to go by myself to work on a wall blower that was on the 6 and 1/2 floor just at the top of the boiler enclosure. The wall blower was naturally situated right next to the boiler. and all the heat generated from the boiler and the piping that came from the bowl mills that blew the coal into the furnace had made the area very hot. The Wall blower had been tripping the breaker and I was supposed to go fix it.
I brought an infrared temperature gun with me and found that the area where the wall blower was mounted was 160 degrees. Maybe it was that high because it was the middle of a hot summer day, and with everything else going on, all the heat trapped right at the top of the boiler enclosure, it had just turned into a huge easy-bake oven.
When I touched the metal door to the control panel on the side of the wall blower, it burned my fingers. I had to use my tee-shirt as a rag to keep from burning my self. I could only stand next to the wall blower for about 30 seconds and then I had to walk back over the doorway and breathe some fresh air and cool off for a minute before going back.
After opening the control panel, I could see what the problem was right away. The insulation on the wires going to the terminal block had the insulation dripping off the wires. The insulation was melting.
I went back to the shop and found some wire that was designed for high temperatures, because obviously someone had used the wrong type of wire when assembling this particular wall blower, given it’s location on the boiler.
High Temperature Wire
Because of the intense heat where I was standing when trying to rewire the wall blower, I was not able to take very big breaths. I had to breathe very shallow, or not at all. So, I would go up to the blower and work as fast as I could removing a screw or putting a new wire down and then I would go back to the doorway about 60 feet from the wall blower and cool off.
As I mentioned in the post about the Luxuries and Amenities of a Power Plant Labor Crew, when you are in this intense heat, your hardhat becomes soft like a baseball cap. In this case, I wasn’t in the heat long enough for this to happen, though I was sweating like a pig.
I had been doing this for a while when an operator showed up wondering what I was doing. His name was Jim Waller and he had been watching me from a distance. He said he was trying to figure out what I was up to because he would see me show up at the doorway and stand there for a while not doing anything, then turning around like I had forgotten something only to show up again about 1/2 minute later.
When he couldn’t figure out what I was doing on his own, he decided to take a closer look. I found him standing at the doorway waiting for me to arrive with a puzzled look on his face. I was tempted to just say nothing and just stand there and take a few breathes and then go back to the wall blower and continue my work.
I couldn’t do that however, when Jim asked me what I was doing. Jim was one of the nicest and most normal operators you could run across. I just couldn’t joke with him. So, I told him I was working on that wall blower over there, but that it was so hot that I had to keep coming to the doorway to cool off.
Jim Waller had come to work for the electric company a month before I began my last summer as summer help in 1982. At the time that I was working on the wall blower in 1984 I was just about to become 24 years old, and a couple of months later, he was going to be 29. Like Gene Day, you instantly knew when you saw Jim that he you liked him. He sort of had that Jim Nabors kind of smile.
Jim Waller reminded me of Jim Nabors when he was younger. He had the same likable demeanor.
Unlike Gene Day, I never felt like playing a joke on Jim. For some reason, Jim just seemed like too nice of a guy. Where Gene had a slight sort of hidden orneriness about him, Jim was just purely a “good guy”.
This past Christmas eve, five days before Jim turned 57 years old, he passed away after a sudden illness. When the guys at the power plant told me about it, I was sad for their loss and for his family. For Jim, on the other hand…. I think he has always had one foot in heaven from the day I met him. I think he finally stepped the rest of the way through the gate.
For someone like me. If I am ever able to make it to heaven, I’m sure there will be a big to-do about it, because someone would have won the pot and I’m sure the odds would have been high against it. However, the day Jim arrived, it was probably more like “business as usual”. — “Oh, Jim’s arrived….. Like no one didn’t see that coming….” If I could say something to Jim now (and being Catholic, I’m allowed to do that), I would ask Jim, “Put in a good word for all the Power Plant Men!” Because I know that Jim’s word is as good as gold. Here is a real picture of Jim, a true Power Plant Man:
Jim Waller, a True Power Plant Man!
Comment from the original post:
Good post on Jim, Kevin. Now, what is a “normal operator”? 🙂
I remember doing several jobs in super hot areas where I had to wear a heavy coat and gloves to keep from getting burned. Had to take off rings and wrist watch too. Needed to take off my glasses, but then I couldn’t see.
Cracking a Boiled Egg in the Boiler and Other Days You Wish You Could Take Back — Repost
Originally Posted on April 13, 2012:
There are some days you wish you could take back after making a grand decision that turns out to look really dumb when your decision fails. It is important to think outside the box to break new ground as long as you bring common sense along for the ride. It seemed that during the days when I was a summer help, and even when I was a laborer on Labor Crew that in order to be promoted you had to come up with one grand idea that set you apart from the others and that also failed miserably.
It was said that the electrical supervisor there before Leroy Godfrey (I can see his face, but his name escapes me), was promoted to that position after he caused the destruction of one of the Intake pump motors (a very large pump that can pump 189,000 gallons of water per minute).
To name a couple of minor “Faux Pas” (how do you pluralize that word? I don’t know), let me start out with the least embarrassing and less dangerous and work my way to the most embarrassing and most dangerous of three different stories of someone thinking out of the box while leaving common sense somewhere behind and maybe wishing they could take back that day.
The first two stories both involve the Electrical Supervisors of two different Power Plants.
Tom Gibson, the Electrical Supervisor from our plant was trying to find a way to keep moisture out of the Bottom Ash Overflow Sump Pumps. This was a reoccurring problem that required a lot of man hours to repair. The bell shaped pump would have to be pulled, the motor would have to be disassembled and dried, and new seals would have to be put in the pump to keep it from leaking.
A Bottom Ash Overflow Sump Pump or BAOSP for Short
So, Tom Gibson decided that he was going to fill the motor and pump cavity with turbine oil. All electricians knew that oil used in turbines is an insulator so electrically it wouldn’t short anything out. But something in the back of your mind automatically says that this isn’t going to work. I remember helping to fill the motor up with oil in the Maintenance shop and hooking up some motor leads from the nearby Maintenance shop 480 volt switchgear. Needless to say, as soon as the pump was turned on, it tripped the breaker and oil began leaking from the cable grommet. That’s when common sense tells you that the all the oil causes too much drag on the rotor which will cause a 480 motor to trip very quickly. After removing some of the oil and trying it again with a larger breaker and still having the same result Tom was satisfied that this just wasn’t going to work. The pump and motor was sent away to a nearby electric shop to be rewound and other ways were developed by the help of our top notch machinist genius Randy Dailey who came up with a positive air pressure way to keep water out of the Bottom Ash Overflow Sump Pump and motor (also known as the BAOSP). Not much harm done and Tom Gibson didn’t feel too bad for trying something that the rest of us sort of thought was mildly insane.
The next story was told to me by my dear friend Bob Kennedy when I was working at a Gas Powered Plant in Midwest City and he was my acting foreman. So I didn’t witness this myself. This one was a little more dangerous, but still thankfully, no one was hurt. Ellis Rooks, the Electrical Supervisor needed to bump test a 4200 Volt motor and wanted to do it in place. For some reason he was not able to use the existing cables, maybe because that was the reason the motor was offline. Because one of the cables had gone to ground. So, he decided that since the motor only pulled 5 to 10 amps he could use #10 wire and string three of them (for the three phases of the motor) from the main High Voltage switchgear across the turbine room floor over to the motor. Now, most electricians know how many amps different size wires can generally handle. It goes like this: #14 – 15 amps, #12 – 20 amps, #10 – 30 amps, #8 – 50 amps and on down (smaller numbers mean bigger wires). So, Ellis thought that since the motor only pulls around 5 amps, and he only wanted to bump the motor (that is, turn it on and off quickly) to watch it rotate, he thought that even though there was normally a 3 – 0 cable (pronounced three aught for 3 zeroes, very large wire), this would be ok because he was only going to bump it.
This works when you are using is 120 or 220 volts
Needless to say, but I will anyway, when the motor was bumped, all that was left were three black streaks of carbon across the turbine room floor where the wire used to exist before it immediately vaporized. You see, common sense tells you that 4200 volts times 5 amps = 21,000 watts of power. However, the starting amps on a motor like this may be around 50 to 100 amps, which would equal 210 to 420 Kilowatts of power (or about 1/5 to 2/5 of a Megawatt). Thus vaporizing the small size 10 wire that is used to wire your house.
All right. I have given you two relatively harmless stories and now the one about cracking the boiled egg in the boiler. This happened when I was still a janitor but was loaned to the Labor Crew during outages. When the boiler would come offline for an outage, the labor crew would go in the boiler and knock down clinkers and shake tubes to clean out clinkers that had built up around the boiler tubes in the intermediate pressure area of the boiler. Clinkers are a hard buildup of ash that can become like large rocks, and when they fall and hit you on the head, depending on the size, can knock you to the floor, which makes wearing your hardhat a must. Your hardhat doesn’t help much when the clinkers falling from some 30 feet above hits you on your shoulder, so I always tried to suck my shoulders up under my hardhat (like a turtle pulling in his arms and legs) so that only my arms were left unprotected. It wasn’t easy looking like a pole with no shoulders, but I tried my best. I think Fred Crocker the tallest and thinnest person on Labor Crew was the best at this.
Before we could get into the boiler to start shaking tubes, the dynamiters would go in there first and blow up the bigger clinkers. So, for a couple of days some times, at the beginning of an overhaul, you would hear someone come over the PA system about every 20 minutes saying, “Stand Clear of Number One Boiler, We’re Gonna Blast!!!” This became so common to hear over the years that unless you were up on the boiler helping out, you didn’t pay any attention to it.
This is something that is only done at a Coal-fired Power Plant because Gas Plants don’t create Ash that turns into Clinkers. Maybe some Soot, I don’t know, but not Ash. Which brings to mind a minor joke we played on Reginald Deloney one day when he came from a gas plant to work on overhaul. We were going to work on a Bowl Mill motor first thing, which is down next to the boiler structure in an enclosed area. We brought our large toolbox and other equipment over to the motor. Andy Tubbs and Diana Brien were there with Reggie and I. I think Gary Wehunt was there with us also. When someone came over the PA system saying, “Stand Clear of Number Two Boiler, We’re Gonna Blast”, all of us dropped everything and ran for the door as if it was an emergency. Reggie, not knowing what was going on ran like the dickens to get out in time only to find us outside laughing at the surprised look on his face.
Anyway. That wasn’t the day that someone wished they could take back, but I thought I would throw that one in anyway so that now Reggie will wish that he could take back that day.
When I was on Labor Crew, and we were waiting on the boiler for the dynamiters to blast all the large clinkers, the engineer in charge, Ed Hutchins decided that things would go a lot quicker if all the laborers would go into the boiler and shake tubes while the dynamiters were setting their charges. Then we would climb out when they were ready to blast, and then go back in. So, we did that. All 10 or so of us climbed into the boiler, and went to work rattling boiler tubes until we heard someone yell, “Fire In The Hole!!!” Then we would all head for the one entrance and climb out and wait for the blast.
The extra time it took to get all of us in the boiler and back out again actually slowed everything down. We weren’t able to get much work done each time, and everyone spent most of their time climbing in and out instead of working, including the dynamiters. So Ed had another brilliant idea. What if we stayed in the boiler while the dynamite exploded? Then we wouldn’t be wasting valuable time climbing in and out and really wouldn’t have to stop working at all.
Of course, common sense was telling us that we didn’t want to be in an enclosed boiler while several sticks worth of dynamite all exploded nearby, so the engineer decided to prove to us how safe it was by standing just inside the entrance of the boiler with his ear plugs in his ears while the dynamite exploded. The dynamiters at first refused to set off the charges, but after Ed and the labor crew convinced them that there really wouldn’t be much lost if the worst happened, they went ahead and set off the dynamite.
Needless to say…. Ed came wobbling his way out of the boiler like a cracked boiled egg and said in a shaky voice, “I don’t think that would be such a good idea.” All of us on the Labor Crew said to each other, “..As if we needed him to tell us that.” I think that may be a day that Ed Hutchins would like to take back. The day he learned the real meaning of “Concussion”. I think he was promoted shortly after that and went to work in Oklahoma City at Corporate Headquarters.
Comments from the original Post:
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When you have pallets double-stacked, you should only move them about with a pallet jack. The bottom pallet – and whatever is stacked on it – is thoroughly supported. And even if the pallet jack is powered, you aren’t likely to get in trouble with rapid acceleration.
As you would with a fork lift truck.
And the double stacked pallets are truck mirrors boxed for shipment to retailers. A couple hundred mirrors. And I dumped both pallets when I went to back up and turn into the warehouse aisle.
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Thanks for that. I have a few of those days myself that I will probably share in later posts.
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Modern parables like these are much too good to waste! They should be included in every freshman Congressman’s Washington Welcome Kit when he first takes office and new ‘reminder’ versions again every time he wins an election. These are wonderful essays on unintended consequences, at which our Congress is among the best!
Blowing it with Power Plant Retracts and Wall Blowers — Repost
Originally Posted February 23, 2013:
I never gave it much thought that when I was on the labor crew at the Coal-fired Power Plant in Oklahoma and we had to go in the boiler to shake the boiler tubes, that next to the portals where you would climb into the boiler there were long metal benches where you could sit just outside while you rested between moments when the dynamiters were getting ready to set off their explosives. (All right… right off the bat…. a run-on sentence the size of a paragraph… I can tell it’s going to be a long night).
To learn more about the dynamiters and shaking boiler tubes you can read the post: Cracking a boiled Egg in the Boiler. At other times while I was on the labor crew, I had heard these same benches making a tremendous sound that you could hear from a few landings away. It sounded like a large steam leak would sound, and at the same time, you could hear some kind of mechanical gears or something running and maybe a chain clanging. I didn’t really understand what the purpose of these long benches served then, only that it was a good place to put the water jug and the box of fly ash suits to keep them from being stepped on.
It was after I had become an electrician that these long metal benches took on another meaning. I found out that they were called “Retracts”. I was told that they called them retracts because what they do is they run a long metal pipe into the boiler and then Retract it back. Ok. I thought it was rather odd to name something for a seemingly insignificant part of the function. After I understood what they were used for, I thought I could come up with a lot better name than “Retract”.
After all, we had equipment like “Honey Wagon” , “Coffin Houses”, “Clinker Grinder”. All really descriptive names. So, when Charles Foster told me to go with Diane Lucas (later Diane Brien) to work on 7R retract, I was expecting to go find some little lever going back and forth making a sound like “brrrr…oops…..brrr…..oops” as it swung back and forth. I would name something like that a “Retract”.
Actually, I would like to have been able to have kept a couple of Retracts in my pocket so that when I would smart off to Leroy Godfrey our Electrical Supervisor, I could pull one out and press the button and… “swoop”! Retracted!
So, what is a Retract? Well. In the story that I linked to above about the cracked egg in the boiler, I explained how when I was on the labor crew we had to go in the boiler and tie ropes to these hanging boiler tubes and then shake them back and forth to clean out the hard ash that had built up on them. Well, The Retract would sort of do that when the boiler was online. They would clean out the tubes in the reheat area of the boiler for the most part.
Diagram of a boiler
What it would do is this. It seemed like 7R retract was about 40 feet long (someone at the plant can correct me if I’m wrong about the length). When it would turn on, it would start rotating a pipe about that long and start pushing it into the boiler. Once the nozzle at the end of the pipe was in the boiler a couple of feet steam would start blasting down the pipe to the nozzle on the end that would shoot the steam out at right angles to the pipe. As the pipe rotated, it would be shooting out steam in a circular motion as the pipe slowly traversed into the boiler.
You see… My dentist told me a long time ago that I should Floss my teeth more if I didn’t want to wear dentures when I was older. By keeping the bits of food out from between my teeth, not only did my breath smell better, but my gums could remain healthy as well. So, I listened to him and started flossing. Retracts are kind of like that.
The Retracts were designed to clean out the areas of the boiler where the ash would build up the most causing the efficiency of the boiler to be degraded. So at certain times of the day, the Control Room operator will push a button on the side panel (at least that was what they used to do… now they probably click an icon on their computer) and it would start the cycle of the retracts going in and out one at a time cleaning out the boiler.
This is a drawing of a Steam retract for a boiler. I added the Chinese characters in the drawing for my Asian readers… no, not really. Sorry the picture is a little small
Anyway. I finally learned what those long metal benches were for and it fascinated me. I wonder how long it took before someone said what now would seem obvious…. “Hey. Instead of having to bring the boiler offline every week or so, how about if we just create this boiler flossing equipment that cleans the boiler out while it is online?”
It made me wonder about the other equipment around the plant. I’ll bet there was a good use for just about everything. And you know what? I think I was right. Instead of just putting all that equipment all over the place for us to play on like a big jungle gym, everything seemed to have a real good purpose.
After 4 years working as a summer help, and one more year as a janitor and on the labor crew, I thought I had seen just about everything in the plant. When I became an electrician, all of the sudden a whole new world opened up to me. Even that bench I had been sitting on turned into a monster machine that blasted away ash clinkers while the rest of us lay at home in our beds dreaming of chocolate, and dragons, and um… other things people dream about.
So, what about the Wall Blower? Well. These are like the retracts, only they are much smaller. they were placed around the walls of the main boiler at strategic locations to blast clinkers that may be building up along the main wall of the boiler. The area in the boiler diagram up above called the Water Wall.
For some reason (and I’m sure it’s a good one), From what was called floor 6 1/2, though it was actually about the 13th floor, on down was an area called the “Boiler Enclosure”. This meant that when you walked up to the boiler, you first had to go through a door and enter an enclosed area around the boiler. 7th floor and above, the boiler was outside.
I’ve been to plants where the entire boiler was enclosed, and I’ve seen some that didn’t look like any of it was enclosed, so I figure this was a happy median between the two. It meant that if it was raining outside and you needed to work on the boiler, it made a big difference how high up you had to go as to whether you needed your rain suit or not.
I mention this because one day I had to go by myself to work on a wall blower that was on the 6 and 1/2 floor just at the top of the boiler enclosure. The wall blower was naturally situated right next to the boiler. and all the heat generated from the boiler and the piping that came from the bowl mills that blew the coal into the furnace had made the area very hot. The Wall blower had been tripping the breaker and I was supposed to go fix it.
I brought an infrared temperature gun with me and found that the area where the wall blower was mounted was 160 degrees. Maybe it was that high because it was the middle of a hot summer day, and with everything else going on, all the heat trapped right at the top of the boiler enclosure, it had just turned into a huge easy-bake oven.
When I touched the metal door to the control panel on the side of the wall blower, it burned my fingers. I had to use my tee-shirt as a rag to keep from burning my self. I could only stand next to the wall blower for about 30 seconds and then I had to walk back over the doorway and breathe some fresh air and cool off for a minute before going back.
After opening the control panel, I could see what the problem was right away. The insulation on the wires going to the terminal block had the insulation dripping off the wires. The insulation was melting.
I went back to the shop and found some wire that was designed for high temperatures, because obviously someone had used the wrong type of wire when assembling this particular wall blower, given it’s location on the boiler.
High Temperature Wire
Because of the intense heat where I was standing when trying to rewire the wall blower, I was not able to take very big breaths. I had to breathe very shallow, or not at all. So, I would go up to the blower and work as fast as I could removing a screw or putting a new wire down and then I would go back to the doorway about 60 feet from the wall blower and cool off.
As I mentioned in the post about the Luxuries and Amenities of a Power Plant Labor Crew, when you are in this intense heat, your hardhat becomes soft like a baseball cap. In this case, I wasn’t in the heat long enough for this to happen, though I was sweating like a pig.
I had been doing this for a while when an operator showed up wondering what I was doing. His name was Jim Waller and he had been watching me from a distance. He said he was trying to figure out what I was up to because he would see me show up at the doorway and stand there for a while not doing anything, then turning around like I had forgotten something only to show up again about 1/2 minute later.
When he couldn’t figure out what I was doing on his own, he decided to take a closer look. I found him standing at the doorway waiting for me to arrive with a puzzled look on his face. I was tempted to just say nothing and just stand there and take a few breathes and then go back to the wall blower and continue my work.
I couldn’t do that however, when Jim asked me what I was doing. Jim was one of the nicest and most normal operators you could run across. I just couldn’t joke with him. So, I told him I was working on that wall blower over there, but that it was so hot that I had to keep coming to the doorway to cool off.
Jim Waller had come to work for the electric company a month before I began my last summer as summer help in 1982. At the time that I was working on the wall blower in 1984 I was just about to become 24 years old, and a couple of months later, he was going to be 29. Like Gene Day, you instantly knew when you saw Jim that he you liked him. He sort of had that Jim Nabors kind of smile.
Jim Waller reminded me of Jim Nabors when he was younger. He had the same likable demeanor.
Unlike Gene Day, I never felt like playing a joke on Jim. For some reason, Jim just seemed like too nice of a guy. Where Gene had a slight sort of hidden orneriness about him, Jim was just purely a “good guy”.
This past Christmas eve, five days before Jim turned 57 years old, he passed away after a sudden illness. When the guys at the power plant told me about it, I was sad for their loss and for his family. For Jim, on the other hand…. I think he has always had one foot in heaven from the day I met him. I think he finally stepped the rest of the way through the gate.
For someone like me. If I am ever able to make it to heaven, I’m sure there will be a big to-do about it, because someone would have won the pot and I’m sure the odds would have been high against it. However, the day Jim arrived, it was probably more like “business as usual”. — “Oh, Jim’s arrived….. Like no one didn’t see that coming….” If I could say something to Jim now (and being Catholic, I’m allowed to do that), I would ask Jim, “Put in a good word for all the Power Plant Men!” Because I know that Jim’s word is as good as gold. Here is a real picture of Jim, a true Power Plant Man:
Jim Waller, a True Power Plant Man!
Comment from the original post:
Good post on Jim, Kevin. Now, what is a “normal operator”? 🙂
I remember doing several jobs in super hot areas where I had to wear a heavy coat and gloves to keep from getting burned. Had to take off rings and wrist watch too. Needed to take off my glasses, but then I couldn’t see.
Cracking a Boiled Egg in the Boiler and Other Days You Wish You Could Take Back — Repost
Originally Posted on April 13, 2012:
There are some days you wish you could take back after making a grand decision that turns out to look really dumb when your decision fails. It is important to think outside the box to break new ground as long as you bring common sense along for the ride. It seemed that during the days when I was a summer help, and even when I was a laborer on Labor Crew that in order to be promoted you had to come up with one grand idea that set you apart from the others and that also failed miserably.
It was said that the electrical supervisor there before Leroy Godfrey (I can see his face, but his name escapes me), was promoted to that position after he caused the destruction of one of the Intake pump motors (a very large pump that can pump 189,000 gallons of water per minute).
To name a couple of minor “Faux Pas” (how do you pluralize that word? I don’t know), let me start out with the least embarrassing and less dangerous and work my way to the most embarrassing and most dangerous of three different stories of someone thinking out of the box while leaving common sense somewhere behind and maybe wishing they could take back that day.
The first two stories both involve the Electrical Supervisors of two different Power Plants.
Tom Gibson, the Electrical Supervisor from our plant was trying to find a way to keep moisture out of the Bottom Ash Overflow Sump Pumps. This was a reoccurring problem that required a lot of man hours to repair. The bell shaped pump would have to be pulled, the motor would have to be disassembled and dried, and new seals would have to be put in the pump to keep it from leaking.
A Bottom Ash Overflow Sump Pump or BAOSP for Short
So, Tom Gibson decided that he was going to fill the motor and pump cavity with turbine oil. All electricians knew that oil used in turbines is an insulator so electrically it wouldn’t short anything out. But something in the back of your mind automatically says that this isn’t going to work. I remember helping to fill the motor up with oil in the Maintenance shop and hooking up some motor leads from the nearby Maintenance shop 480 volt switchgear. Needless to say, as soon as the pump was turned on, it tripped the breaker and oil began leaking from the cable grommet. That’s when common sense tells you that the all the oil causes too much drag on the rotor which will cause a 480 motor to trip very quickly. After removing some of the oil and trying it again with a larger breaker and still having the same result Tom was satisfied that this just wasn’t going to work. The pump and motor was sent away to a nearby electric shop to be rewound and other ways were developed by the help of our top notch machinist genius Randy Dailey who came up with a positive air pressure way to keep water out of the Bottom Ash Overflow Sump Pump and motor (also known as the BAOSP). Not much harm done and Tom Gibson didn’t feel too bad for trying something that the rest of us sort of thought was mildly insane.
The next story was told to me by my dear friend Bob Kennedy when I was working at a Gas Powered Plant in Midwest City and he was my acting foreman. So I didn’t witness this myself. This one was a little more dangerous, but still thankfully, no one was hurt. Ellis Rooks, the Electrical Supervisor needed to bump test a 4200 Volt motor and wanted to do it in place. For some reason he was not able to use the existing cables, maybe because that was the reason the motor was offline. Because one of the cables had gone to ground. So, he decided that since the motor only pulled 5 to 10 amps he could use #10 wire and string three of them (for the three phases of the motor) from the main High Voltage switchgear across the turbine room floor over to the motor. Now, most electricians know how many amps different size wires can generally handle. It goes like this: #14 – 15 amps, #12 – 20 amps, #10 – 30 amps, #8 – 50 amps and on down (smaller numbers mean bigger wires). So, Ellis thought that since the motor only pulls around 5 amps, and he only wanted to bump the motor (that is, turn it on and off quickly) to watch it rotate, he thought that even though there was normally a 3 – 0 cable (pronounced three aught for 3 zeroes, very large wire), this would be ok because he was only going to bump it.
This works when you are using is 120 or 220 volts
Needless to say, but I will anyway, when the motor was bumped, all that was left were three black streaks of carbon across the turbine room floor where the wire used to exist before it immediately vaporized. You see, common sense tells you that 4200 volts times 5 amps = 21,000 watts of power. However, the starting amps on a motor like this may be around 50 to 100 amps, which would equal 210 to 420 Kilowatts of power (or about 1/5 to 2/5 of a Megawatt). Thus vaporizing the small size 10 wire that is used to wire your house.
All right. I have given you two relatively harmless stories and now the one about cracking the boiled egg in the boiler. This happened when I was still a janitor but was loaned to the Labor Crew during outages. When the boiler would come offline for an outage, the labor crew would go in the boiler and knock down clinkers and shake tubes to clean out clinkers that had built up around the boiler tubes in the intermediate pressure area of the boiler. Clinkers are a hard buildup of ash that can become like large rocks, and when they fall and hit you on the head, depending on the size, can knock you to the floor, which makes wearing your hardhat a must. Your hardhat doesn’t help much when the clinkers falling from some 30 feet above hits you on your shoulder, so I always tried to suck my shoulders up under my hardhat (like a turtle pulling in his arms and legs) so that only my arms were left unprotected. It wasn’t easy looking like a pole with no shoulders, but I tried my best. I think Fred Crocker the tallest and thinnest person on Labor Crew was the best at this.
Before we could get into the boiler to start shaking tubes, the dynamiters would go in there first and blow up the bigger clinkers. So, for a couple of days some times, at the beginning of an overhaul, you would hear someone come over the PA system about every 20 minutes saying, “Stand Clear of Number One Boiler, We’re Gonna Blast!!!” This became so common to hear over the years that unless you were up on the boiler helping out, you didn’t pay any attention to it.
This is something that is only done at a Coal-fired Power Plant because Gas Plants don’t create Ash that turns into Clinkers. Maybe some Soot, I don’t know, but not Ash. Which brings to mind a minor joke we played on Reginald Deloney one day when he came from a gas plant to work on overhaul. We were going to work on a Bowl Mill motor first thing, which is down next to the boiler structure in an enclosed area. We brought our large toolbox and other equipment over to the motor. Andy Tubbs and Diana Brien were there with Reggie and I. I think Gary Wehunt was there with us also. When someone came over the PA system saying, “Stand Clear of Number Two Boiler, We’re Gonna Blast”, all of us dropped everything and ran for the door as if it was an emergency. Reggie, not knowing what was going on ran like the dickens to get out in time only to find us outside laughing at the surprised look on his face.
Anyway. That wasn’t the day that someone wished they could take back, but I thought I would throw that one in anyway so that now Reggie will wish that he could take back that day.
When I was on Labor Crew, and we were waiting on the boiler for the dynamiters to blast all the large clinkers, the engineer in charge, Ed Hutchins decided that things would go a lot quicker if all the laborers would go into the boiler and shake tubes while the dynamiters were setting their charges. Then we would climb out when they were ready to blast, and then go back in. So, we did that. All 10 or so of us climbed into the boiler, and went to work rattling boiler tubes until we heard someone yell, “Fire In The Hole!!!” Then we would all head for the one entrance and climb out and wait for the blast.
The extra time it took to get all of us in the boiler and back out again actually slowed everything down. We weren’t able to get much work done each time, and everyone spent most of their time climbing in and out instead of working, including the dynamiters. So Ed had another brilliant idea. What if we stayed in the boiler while the dynamite exploded? Then we wouldn’t be wasting valuable time climbing in and out and really wouldn’t have to stop working at all.
Of course, common sense was telling us that we didn’t want to be in an enclosed boiler while several sticks worth of dynamite all exploded nearby, so the engineer decided to prove to us how safe it was by standing just inside the entrance of the boiler with his ear plugs in his ears while the dynamite exploded. The dynamiters at first refused to set off the charges, but after Ed and the labor crew convinced them that there really wouldn’t be much lost if the worst happened, they went ahead and set off the dynamite.
Needless to say…. Ed came wobbling his way out of the boiler like a cracked boiled egg and said in a shaky voice, “I don’t think that would be such a good idea.” All of us on the Labor Crew said to each other, “..As if we needed him to tell us that.” I think that may be a day that Ed Hutchins would like to take back. The day he learned the real meaning of “Concussion”. I think he was promoted shortly after that and went to work in Oklahoma City at Corporate Headquarters.
Comments from the original Post:
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When you have pallets double-stacked, you should only move them about with a pallet jack. The bottom pallet – and whatever is stacked on it – is thoroughly supported. And even if the pallet jack is powered, you aren’t likely to get in trouble with rapid acceleration.
As you would with a fork lift truck.
And the double stacked pallets are truck mirrors boxed for shipment to retailers. A couple hundred mirrors. And I dumped both pallets when I went to back up and turn into the warehouse aisle.
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Thanks for that. I have a few of those days myself that I will probably share in later posts.
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Modern parables like these are much too good to waste! They should be included in every freshman Congressman’s Washington Welcome Kit when he first takes office and new ‘reminder’ versions again every time he wins an election. These are wonderful essays on unintended consequences, at which our Congress is among the best!
Power Plant Retracts and Wall Blowers Enough to Blow your Mind
I never gave it much thought that when I was on the labor crew at the Coal-fired Power Plant in Oklahoma and we had to go in the boiler to shake the boiler tubes, that next to the portals where you would climb into the boiler there were long metal benches where you could sit just outside while you rested between moments when the dynamiters were getting ready to set off their explosives. (All right… right off the bat…. a run-on sentence the size of a paragraph… I can tell it’s going to be a long night).
To learn more about the dynamiters and shaking boiler tubes you can read the post: Cracking a boiled Egg in the Boiler. At other times while I was on the labor crew, I had heard these same benches making a tremendous sound that you could hear from a few landings away. It sounded like a large steam leak would sound, and at the same time, you could hear some kind of mechanical gears or something running and maybe a chain clanging. I didn’t really understand what the purpose of these long benches served then, only that it was a good place to put the water jug and the box of fly ash suits to keep them from being stepped on.
It was after I had become an electrician that these long metal benches took on another meaning. I found out that they were called “Retracts”. I was told that they called them retracts because what they do is they run a long metal pipe into the boiler and then Retract it back. Ok. I thought it was rather odd to name something for a seemingly insignificant part of the function. After I understood what they were used for, I thought I could come up with a lot better name than “Retract”.
After all, we had equipment like “Honey Wagon” , “Coffin Houses”, “Clinker Grinder”. All really descriptive names. So, when Charles Foster told me to go with Diane Lucas (later Diane Brien) to work on 7R retract, I was expecting to go find some little lever going back and forth making a sound like “brrrr…oops…..brrr…..oops” as it swung back and forth. I would name something like that a “Retract”.
Actually, I would like to have been able to have kept a couple of Retracts in my pocket so that when I would smart off to Leroy Godfrey our Electrical Supervisor, I could pull one out and press the button and… “swoop”! Retracted!
So, what is a Retract? Well. In the story that I linked to above about the cracked egg in the boiler, I explained how when I was on the labor crew we had to go in the boiler and tie ropes to these hanging boiler tubes and then shake them back and forth to clean out the hard ash that had built up on them. Well, The Retract would sort of do that when the boiler was online. They would clean out the tubes in the reheat area of the boiler for the most part.
Diagram of a boiler
What it would do is this. It seemed like 7R retract was about 40 feet long (someone at the plant can correct me if I’m wrong about the length). When it would turn on, it would start rotating a pipe about that long and start pushing it into the boiler. Once the nozzle at the end of the pipe was in the boiler a couple of feet steam would start blasting down the pipe to the nozzle on the end that would shoot the steam out at right angles to the pipe. As the pipe rotated, it would be shooting out steam in a circular motion as the pipe slowly traversed into the boiler.
You see… My dentist told me a long time ago that I should Floss my teeth more if I didn’t want to wear dentures when I was older. By keeping the bits of food out from between my teeth, not only did my breath smell better, but my gums could remain healthy as well. So, I listened to him and started flossing. Retracts are kind of like that.
The Retracts were designed to clean out the areas of the boiler where the ash would build up the most causing the efficiency of the boiler to be degraded. So at certain times of the day, the Control Room operator will push a button on the side panel (at least that was what they used to do… now they probably click an icon on their computer) and it would start the cycle of the retracts going in and out one at a time cleaning out the boiler.
This is a drawing of a Steam retract for a boiler. I added the Chinese characters in the drawing for my Asian readers… no, not really. Sorry the picture is a little small
Anyway. I finally learned what those long metal benches were for and it fascinated me. I wonder how long it took before someone said what now would seem obvious…. “Hey. Instead of having to bring the boiler offline every week or so, how about if we just create this boiler flossing equipment that cleans the boiler out while it is online?”
It made me wonder about the other equipment around the plant. I’ll bet there was a good use for just about everything. And you know what? I think I was right. Instead of just putting all that equipment all over the place for us to play on like a big jungle gym, everything seemed to have a real good purpose.
After 4 years working as a summer help, and one more year as a janitor and on the labor crew, I thought I had seen just about everything in the plant. When I became an electrician, all of the sudden a whole new world opened up to me. Even that bench I had been sitting on turned into a monster machine that blasted away ash clinkers while the rest of us lay at home in our beds dreaming of chocolate, and dragons, and um… other things people dream about.
So, what about the Wall Blower? Well. These are like the retracts, only they are much smaller. they were placed around the walls of the main boiler at strategic locations to blast clinkers that may be building up along the main wall of the boiler. The area in the boiler diagram up above called the Water Wall.
For some reason (and I’m sure it’s a good one), From what was called floor 6 1/2, though it was actually about the 13th floor, on down was an area called the “Boiler Enclosure”. This meant that when you walked up to the boiler, you first had to go through a door and enter an enclosed area around the boiler. 7th floor and above, the boiler was outside.
I’ve been to plants where the entire boiler was enclosed, and I’ve seen some that didn’t look like any of it was enclosed, so I figure this was a happy median between the two. It meant that if it was raining outside and you needed to work on the boiler, it made a big difference how high up you had to go as to whether you needed your rain suit or not.
I mention this because one day I had to go by myself to work on a wall blower that was on the 6 and 1/2 floor just at the top of the boiler enclosure. The wall blower was naturally situated right next to the boiler. and all the heat generated from the boiler and the piping that came from the bowl mills that blew the coal into the furnace had made the area very hot. The Wall blower had been tripping the breaker and I was supposed to go fix it.
I brought an infrared temperature gun with me and found that the area where the wall blower was mounted was 160 degrees. Maybe it was that high because it was the middle of a hot summer day, and with everything else going on, all the heat trapped right at the top of the boiler enclosure, it had just turned into a huge easy-bake oven.
When I touched the metal door to the control panel on the side of the wall blower, it burned my fingers. I had to use my tee-shirt as a rag to keep from burning my self. I could only stand next to the wall blower for about 30 seconds and then I had to walk back over the doorway and breathe some fresh air and cool off for a minute before going back.
After opening the control panel, I could see what the problem was right away. The insulation on the wires going to the terminal block had the insulation dripping off the wires. The insulation was melting.
I went back to the shop and found some wire that was designed for high temperatures, because obviously someone had used the wrong type of wire when assembling this particular wall blower, given it’s location on the boiler.
High Temperature Wire
Because of the intense heat where I was standing when trying to rewire the wall blower, I was not able to take very big breaths. I had to breathe very shallow, or not at all. So, I would go up to the blower and work as fast as I could removing a screw or putting a new wire down and then I would go back to the doorway about 60 feet from the wall blower and cool off.
As I mentioned in the post about the Luxuries and Amenities of a Power Plant Labor Crew, when you are in this intense heat, your hardhat becomes soft like a baseball cap. In this case, I wasn’t in the heat long enough for this to happen, though I was sweating like a pig.
I had been doing this for a while when an operator showed up wondering what I was doing. His name was Jim Waller and he had been watching me from a distance. He said he was trying to figure out what I was up to because he would see me show up at the doorway and stand there for a while not doing anything, then turning around like I had forgotten something only to show up again about 1/2 minute later.
When he couldn’t figure out what I was doing on his own, he decided to take a closer look. I found him standing at the doorway waiting for me to arrive with a puzzled look on his face. I was tempted to just say nothing and just stand there and take a few breathes and then go back to the wall blower and continue my work.
I couldn’t do that however, when Jim asked me what I was doing. Jim was one of the nicest and most normal operators you could run across. I just couldn’t joke with him. So, I told him I was working on that wall blower over there, but that it was so hot that I had to keep coming to the doorway to cool off.
Jim Waller had come to work for the electric company a month before I began my last summer as summer help in 1982. At the time that I was working on the wall blower in 1984 I was just about to become 24 years old, and a couple of months later, he was going to be 29. Like Gene Day, you instantly knew when you saw Jim that he you liked him. He sort of had that Jim Nabors kind of smile.
Jim Waller reminded me of Jim Nabors when he was younger. He had the same likable demeanor.
Unlike Gene Day, I never felt like playing a joke on Jim. For some reason, Jim just seemed like too nice of a guy. Where Gene had a slight sort of hidden orneriness about him, Jim was just purely a “good guy”.
This past Christmas eve, five days before Jim turned 57 years old, he passed away after a sudden illness. When the guys at the power plant told me about it, I was sad for their loss and for his family. For Jim, on the other hand…. I think he has always had one foot in heaven from the day I met him. I think he finally stepped the rest of the way through the gate.
For someone like me. If I am ever able to make it to heaven, I’m sure there will be a big to-do about it, because someone would have won the pot and I’m sure the odds would have been high against it. However, the day Jim arrived, it was probably more like “business as usual”. — “Oh, Jim’s arrived….. Like no one didn’t see that coming….” If I could say something to Jim now (and being Catholic, I’m allowed to do that), I would ask Jim, “Put in a good word for all the Power Plant Men!” Because I know that Jim’s word is as good as gold. Here is a real picture of Jim, a true Power Plant Man:
Jim Waller, a True Power Plant Man!
Power Plant Men 
I worked with Ed on the Precipitator control replacement project (84 controls X 2) in 2006 I think. He was getting ready to retire at the time. He was a good engineer and a tough customer. I was working for the control supplier and those 168 controls were the first installation of a brand new control design. I had lead the design team for the controls and this was the culmination of our work. I spend more days and nights than I can remember going up and down the aisles of controls loading software fixes into the processors! Anyway, great people at the plant and great memories… including a rapper control cabinet that took the express route to the ground elevation from the precip roof! (ouch, it really is the sudden stop that gets you!)
Thanks for the comment John! It’s good to hear about improvements to the Precipitator and the control rooms I used to call home. I spend many weekends walking back and forth through those control rooms.
OMG – The very thought of a group staying in the boiler when the dynamite went off! Thank goodness THAT didn’t happen. I felt the tension just reading that bit. I’m glad Ed came out of it all right.