Hello. I work in a coal-burning power plant. We have noticed that during a couple heavy downpours recently, our stack opacity has gone up significantly for short periods and then returned to normal. The opacity meter is situated about half way up our stack. Can anyone offer suggestions why...
We are installing an anhydrous ammonia tank in our coal burning power plant to inject for flue gas conditioning. My question has to do with the loading by truck of the product. The tank will be at 600 kPag (14°C) to 815 kPag (22°C), so when we fill the tank, the truck driver will equalize the...
Hello,
Does anyone know what the hydrotest pressure for CSA Z662 is supposed to be. I know it's 1.5 times design for B31.3, but I can't recall what Z662 is.
We have two mechanical refrig. plants that dehydrate sales gas by spraying TEG into the gas-gas exchangers. We are having an issue where asphaltenes drop out of the gas and become entrained in the TEG. When it cycles back, the nozzles get plugged and if we can't clear the plug with a pressure...
We have a satellite with a TEG dehy system. The water that gets removed from the regenerated TEG goes to a holding tank that is currently open to atmosphere. This water contains BTEX and the vapour has a strong odour. I know two options of getting rid of this nuisance are a vapor recovery...
Does anyone know the difference between A182 F316 and A182 F316L Flanges? They have the same amount of Cr, Ni, and Mo, but have different pressure ratings and they are categorized in different material groups.
We use ethylene glycol for our heat tracing. The boiler that we use for heating the glycol was re-tubed two years ago, and it just started leaking 3 months ago. Upon inspection, we found several tubes corroded around the area on the tube attached to the tube sheet(they're attached by rolling)...
We are thinking of using fuel gas as a blanket for our ethylene glycol storage tank. The boiler for the glycol is downstream approx. 10-15 feet away. Is it a bad idea to have a fuel gas blanket on a vessel so close to an ignition source. Does anyone know what code or standard gives spacing...
We have multiple wells in a relatively mature oil field. In the last year we set up a pilot project to inject C02 into the formation to get greater oil production. Within the last six months we've seen hydrate formation across the choke spools on our wells. This causes interuption in...
My pipefitter has issues with using bushings. I've heard of others not liking the practice of using bushings, but no one can explain why. The only thing I've been able to find is that the lack of "meat" in a bushing doesn't lend much confidence to it's pressure rating. My feeling is if a...
I was looking through Section VIII on how to re-rate a vessel's MAWP. At first crack, it seems all I can do is use the design calculations and hope the manufacturer underrated the vessel. Does anyone have any experience with this?
