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Post by Avenger on Jun 28, 2010 7:57:09 GMT -5
Cool pics! Methinks you need some Ridlyme in those boilers ;D
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Post by yachtsmanwilly on Jun 28, 2010 9:53:10 GMT -5
HEY PUNK... Why does the gunnite on the tubes have oil on them? Is that from cutting out bad tubes? Or is that water from leaks? The main steam stop valve is loaded with "blue blush". Gotta sandblast that stuff clean before ya re-lap it. Are ya magnafluxing the studs? Judging from the little amount of flyash on you, they must be oil fired units. (?) ws
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Post by krush on Jun 28, 2010 20:14:51 GMT -5
Click the link and you'll see even more pictures of the lovely tubes.
Boiler burns #6, but they also been feeding it waste oil which is causing all that nasty on the tubes in the furnace and first layers of superheaters. The stuff ain't like the normal ash, it's literally rock and tar...i guess nobody has told bosses how much this really fucks the heat rate (and messes with the operators that have to spray on SH and RH).
The turbine and big valves are being handled by a contractor. Other than the slagging, the boiler looked pretty good for its age. There was quite a bit of iron oxide/sand watever in the steam drum.
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Post by yachtsmanwilly on Jun 28, 2010 22:22:17 GMT -5
Better go beat up the water chemistry tech. No Diamond soot blowers? If yer getting that much mud in the drums, the blow down frequency needs to be increased. Are you sure you meant steam drums? They are on top and the mud drums are at the bottom. The SDs seperate the saturated steam from SH'd steam, but you know that, right? Is that toy rotor a tandem or compound unit? I.E. HP/IP on one and a LP turbine next to it with a recirc/reheat steam path? The HP will be a 3600 rpm unit and the LP 1800. 200 MW units? ws
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Post by krush on Jun 28, 2010 23:22:16 GMT -5
Billy boy, it's not the first steam drum I mounted. These boilers (they be twins) don't have mud drums, just headers at the bottom.
Cross compounds are old school---I ain't seen one newer than 1960's/70's. They hired me because of what I know, not what I don't! But if I ever have questions, I always go across the hall to get my answer.
Rotor from 60mW GE reheat turbine (HP, IP, LP). Yeah, we play small on this island lol 60mW boilers. The other big juice makers are 40mW slow speed diesels.
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Post by sgharford on Jun 29, 2010 16:01:19 GMT -5
Jeese Krush - just run flush that boiler with Penray 2015 Off-Line Cooling Syst Cleaner and be done with it once and for all! Chuckle Chuckle. Enjoying the thread.
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Post by badhattitude on Jun 29, 2010 16:37:59 GMT -5
That penray is so good they stopped making it. there is no way something new can do the same job.....
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Post by krush on Jun 29, 2010 16:42:49 GMT -5
Can't use muratic acid, gotta use phosforic or waterver...hmm, needa go look up that special how to clean heat exchanger thread.
LOL I'm sure I could get lots of good info from know-alls that wouldn't know WTF they are looking at in a steam plant. "You can't use that wire, where's your bonding?"
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Post by badhattitude on Jun 29, 2010 18:13:33 GMT -5
Hell Krush some classics can't accept progress.
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Post by yachtsmanwilly on Jun 29, 2010 21:25:08 GMT -5
Can't use muratic acid, gotta use phosforic or waterver...hmm, needa go look up that special how to clean heat exchanger thread. LOL I'm sure I could get lots of good info from know-alls that wouldn't know WTF they are looking at in a steam plant. "You can't use that wire, where's your bonding?" We did a caustic wash on our stuff... after the unit was full, we'd light off and maintain 300F/200 psi for about 10 hours. The stuff coming out looked like baby shit! For the lack of a better name, it reminded me of CLR. Heat and pressure was they key. ws
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