I am sizing a PSV for fire case on Toluene that will discharge to a common scrubber header. What is the accepted method to determine superimposed backpressure on the PSV from the header? Normal running condition, all reliefs on the header discharging at the same time, some reliefs discharging, etc.?
I have two samples of 14" nominal diameter cast iron pipe in plant water, underground service (per original plant drawings) that I have been asked to review for corrosion and remaining life. The UT wall thicknesses are in the 0.676" to 0.706" range. There does not appear to be any lining. Are...
I have to make a 1/2" carbon pipe w/ screwed fittings to 3/8" stainless tubing transition. This is 150# steam service for heat tracing application. To be most conservative, Id like to use a C/S 1/2" RFWN flange to S/S 1/2" RFWN flange with isolation gasket kit. From there, Ill bush down to 3/8"...
For the API 520 All Vapor Flow case reaction force calculation (API 520, PArt II, 4.4.1.1), a component P is referenced as the static pressure in discharge pipe at point of discharge. What value is this? Is this 0 psig for all discharges to atmosphere? Is it the built up back pressure due to...
For the API 520 All Vapor Flow case reaction force calculation (API 520, PArt II, 4.4.1.1), a component P is referenced as the static pressure in discharge pipe at point of discharge. What value is this? Is this 0 psig for all discharges to atmosphere? Is it the built up back pressure due to...
I have a 1965 drawing referencing 3/16" carbon steel plate on a rectangular hopper. The hoppers are collection under a cement kiln electrostaic precipitator. What ASTM specification would these likely have been made to? I dont believe they would have been A-283 or A-285 plate, probably either...
