We proceeded with re-piping the DA tank vent with 45 degree elbows instead of the 90 degree elbows thinking that the less friction / easier flow path would prevent the condensate from forming (if that is what the water is). After putting back in service the problem first appeared to be gone...
I have a new steam boiler plant installation with a 26,000 #/hr spray type dearator. We run the DA tank at the recommended 5 psi. The DA tank vent where the steam and bad gases continuously vent off was installed with a couple of elbows in it. We are getting intermittent spouting of liquid...
I described the situation to the state boiler inspector (MT). This specific question had not come up before. After doing some research his answer was that the Warrick 26 with the power outage feature would not meet the ASME CSD-1 code. But that a float style control would be acceptable. So I...
Thanks for weighing in GenB. Point taken on getting the operator in front of the boiler after a power loss. They don't do it now and this is exactly what they are trying to avoid. They want the plant to come back on it's own. In out state it is recommended but not required to man the plant...
Yes UPS or capacitor were my 1st thoughts. The LWCO is UL listed and I'd rather not change part and pieces in the mfg wiring of the boiler and control. So I was excited to find Warrick offers a power outage option that can be ordered on the same model 26 LWCO that is OEM installed on boiler...
Anyone out there run into this before or offer their thoughts:
I designed a central steam boiler plant for a hospital - 150 psig relief valves. The boiler water level LWCO safeties are Warrick probe style conductivity sensors. Facility experiences frequent power bumps in incoming grid...
Can anyone help me with requirements vs recommendations on DA tank inspection? Hospital client with central steam plant, with pressurized DA tank operating at 5 psi. I assume relief valves set at 15 psi but have not checked. I would figure an annual inspection inside the tank is smart, but is...
I will look into stainless pump from grundfoss, good idea. And we will coat or use stainless pipe on the 1st stick connected to the pump. The corrosion problem only appeared below the bottom or our (steel) well casing on the pump and portion of pipe below the bottom of casing. This would be...
Bimr, thanks for the detailed reply, sorry I have not replied sooner. We have the "rotten egg" odor, a strong sulphurous smell in the discharge water. We have had it a long time. About 2.5 years ago we did a chlorine bleach shock to the well to try to get rid of the smell. It never really...
I operate a well water source heat pump heating / cooling system. After running the system for 4.5 years, our submersible well pump quit and we just pulled it out of well. The pump casing (cast iron) is weakened and cracked in half when set on a trailer. There is a dime sized hole (looks like...
No, you have valid thoughts Re: ventilation and VAV reheat systems. You should probably check out ASHRAE 62.1 (if you haven't already) which has a process to calculate the minimum outside air that a VAV air system should use. One design that I have done (custom air handler though, not packaged...
I've recently retrofit variable speed pumping onto a couple decent size hydronic systems. In each project I've put 3 or 4 dp sensors in, because I was not sure what branch or area would be the worst case run (but I had some educated guesses), and wanted to get a picture of the overall pressures...
