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

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.

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

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.

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!

Jim Waller, a True Power Plant Man!


Comment from the original post:

Ron Kilman February 23, 2013:

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.



Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: