Does anyone know if there are any regulated policies / procedures for working inside these exhaust ducts ( working on sensors, dampers, inspections, etc)? I've asked the question at my site and no one seems to know the answer. Lots of opinions, but no reference to any...
Hello All,
Having a few issues here on a dual speed motor running a fan, and i think im getting close to the answer, but i need a bit more insight from some experts.
After a bit of research, I've come to the understanding that what I'm dealing with is a Dahlander motor, which essentially...
Im having trouble trying to get some legit answers on if i should be using the supply or the exhaust to calculate ACH for negative isolation rooms. One would think that this would be obvious, as i was told that ACH is always calculated from the larger of the 2. However, i just read an ASHRAE...
Hello All,
I'm hoping someone can shed some light on this issue, as I'm having a hard time finding meaningful information. I cant figure out which body actually certifies a person or organization to do in-situ HEPA filter testing in Canada, nor can i find out which standards organization in...
Hi All, I'm wondering if someone can help me understand some pressure/flow concepts im having a hard time wrapping my head around. What started with me trying to figure out a theoretical flow of gas through an orifice has turned into 2 nights of google searches and now i give up.
Can someone...
I have a 400VAC generator here that will be used on an offshore platform, 4 wires out (1,2,3,N). There is a toroid type earth leakage relay on it inside the generator main breaker enclosure with all 3 phases and neutral running through it. My understanding is that the toroid will sense any...
