Hi folks, wondering if anyone has used the newer csi spec division system for biopharma high purity piping. If so did you use the 22 or the 40 (process piping) division?
Thanks
Recently came across a situation on a hvac chilled water cooling coil where the coil connections were comprised of steel pipe nipples brazed (2 - one supply and one return) to the coil's copper vertical header pipe. Does anyone know if this is common? Seems like this would invite a galvanic...
Recently came across a situation on a hvac chilled water cooling coil where the coil connections were comprised of steel pipe nipples brazed to the coil's copper header pipe. Does anyone know if this is common? Seems like this would invite a galvanic corrosion problem.
Hi Folks,
I've got a decent amount of exposed galv duct runs going into a conditioned space (large open warehouse) in upper eastern USA. Plan now is to insulate the supply runs. I'm wondering if we really need to insulate given the fact that the space will be fully conditioned and the...
Chas - Thanks for the reply. Very interesting that BOCA 87 says no more than 85% can be recirc'd. The BOD that I have says none shall be recirc'd. Just another mistake, I find them all the time!
Thanks again.
Hi Folks,
Wondering if anyone has an old copy of the BOCA 1987 mechanical code. If so, I was wondering what it states as the min ventilation rate for locker rooms/areas. I'm looking at an old basis of design where it is stated that the rate is 35 cfm per person per the 1987 Code. I have the...
Hello, wondering if anyone has run into the following/has any advice:
I've got a sheetmetal contractor ductwork standards submittal containing a reinforcement schedule for TDF joints. They want to use flat bar stock to increase the rating of the joints for larger duct/higher pressure class...
Thank you folks for replying to this question. We went ahead and had the eyewash station in question connected to the waste system. The issue we have here is that we must test all eyewashes once a month. With somewhere around 500 units this is quite a job. With the eyewashes directly...
Hello Folks,
For some reason my post back in Aug was deleted. I would like to pose the question again: Is the connection between the bowl drain of an eyewash and the sanitary system supposed to be an indirect connection or can the bowl drain be directly connected to the sanitary system (of...
My supervisor wants me to get some training on ASME section VIII, specifically unfired vessels. I really don't want to have to travel to Texas (I'm in New England). I work at a production plant that uses unfired vessels, we don't design them. Is there anyone in New England who offers training...
Hello folks,
I've got a 20" dia x 48" long horizontal steam condensate flash tank. Tank is vented to atmosphere. 60lb steam condensate at about 4000 lbs/hr, approx 400 lbs/hr flash steam. Question is the existing tank has a spray or sparge pipe installed at the inlet to the tank. Sparge...
CB- thanks for the input. Yes this is a 100% OA unit. And yes I can just change the cross over(F&B dampers to valve) point to 35 F. It just bothers me (and others) that this temperature "override" (this is what the manufacturer's call it) is 2 or 3 times what they publish in their literature...
Hi folks,
I'm looking for other's experience's with integral-vertical face and bypass steam preheat coils with respect to temperature overshoot when in 100% bypass mode.
I've got a new VIFB steam preheat coil in a brand new 100% outside air custom unit. When the outside air (OA) is above 40F...
I've got a tank accepting both compressed air and wastewater at the same time. I need to keep the static pressure in the tank at or below 1" WG (i.e. atmospheric) by selecting the appropriate size vent. I've done a calculation assuming that the developed static pressure in the tank equals the...
