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  • Users: CountOlaf
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  1. CountOlaf

    Need for diffuser or grille in elec room

    RTU on a "roof" of a small building (electrical room)/space within another building. For the supply downcomer (with return being ducted from the other end of the room), do I really need to have a diffuser or grille on the supply opening (or any ducting for that matter except for the bit that...
  2. CountOlaf

    Relief Valve Discharge to Blowdown Tank Vent

    Dear Colleagues: I've got a system at a coal-fired power plant where we've put in a pressure relief valve off of a water loop which is used for automatic cleaning of the furnace (like water cannons). The water source is condensate water at relatively low temp (100 deg F) and high pressure (say...
  3. CountOlaf

    Underground CISP tie-in

    I posted this on the "plumbing engineering" forum, but I noticed they don't get as much activity there. So perhaps some of you "pipe-fitters" have experience with plumbing as well. Anyway, here it is again: Anyone know the best way to tie into existing underground 4" extra heavy (XH) CISP...
  4. CountOlaf

    Underground CISP tie-in

    Anyone know the best way to tie into existing underground 4" extra heavy (XH) CISP, hub and spigot type gravity sanitary piping? I want to put in a new floor drain and tie in with a 4" wye (or 4 x 3) but I can't think of how you'd get the fitting in. If you cut the right length of section out...
  5. CountOlaf

    316 SS pipe welding to carbon steel

    I'm posting a duplicate query here as well just in case you guys don't visit the "piping and fluid mechanics engineering" forum. Someone there suggested a welding forum, but I don't think there is one of those. Anyway... Is it OK/common practice to weld 316L SS pipe to standard sch 40 carbon...
  6. CountOlaf

    316 SS pipe welding to carbon steel

    I read over the thread realted to isolation flanges, but I figured it would be better to start a new thread... Is it OK/common practice to weld 316L SS pipe to standard sch 40 carbon steel pipe or A36 steel plate? Are there any type of special welding materials/electrodes or special prep...
  7. CountOlaf

    Permissible Noise Exposures

    Safety guys: I know OSHA has that section/chart where "hours per day" exposure correlates to "sound level in dB" beginning at 90 and going up to 115 with a corresponding 8 hrs declining to 0.25 hrs of permissible exposure. My question is: I seem to recall a magic number like 85 db that...
  8. CountOlaf

    hi-temp water reduction

    Hey all, Problem: I'm using hot water in a standard air handler heating application where I've called for 200 deg F water in and perhaps a 20 deg drop through the coil for my heating needs. It turns out the existing hot water system I'm tying into varies in temperature from 200 to 300 deg's...

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