Does anyone have any experience specifying oxygen sensors to be installed on the inlet and outlet piping of a reciprocating compressor, which will be used to shutdown the compressor when the mixture of hydrocarbon gas and air approaches the Lower Explosive Limit (LEL)?
What are typical settings...
I am designing an Offshore Oil Pipeline Pig Launcher Skid in accordance with ASME B31.4. In regards to the Quick Opening Closure for accessing the Pig, I have seen previous "industry" designs where the closure is specified in accordance with ASME VIII Div. 1 and the Launcher Barrel is in...
I am tying in a spring-operated pressure relief valve into a vent piping system, which imposes a backpressure greater than 10% (of the set pressure) on the relief valve. From my experience, when the backpressure is greater than 10%, you are required to run the calculations of the specific...
unclesyd,
This is all being done by an offshore crew. I was informed that they replaced the gaskets and fasteners. They reviewed the flanges and pipe, and there was no deformation, but I need to provide 'calculated proof' that nothing happened.
Is it true that when the MAWP in a pressure...
This is a continutation of the previous 'Hydrotest Pressure Exceeded' discussion:
Quick Summary: The hydrotest pressure (6,500#) was exceeded for a '6 in Pipe (.562” WT) and ANSI 900 RTJ Flange' Piping System (2220# MAWP) for 15 minutes, where gaskets began to leak and the hydrotest was...
unclesyd,
Thanks, and sorry if I appear to be going in circles here.
We were able to get MTR's on the pipe, which show a yield strength of 50,400 psi (76,200 psi tensile). Using Barlow's Formula, I get an 'Internal Pressure of Minimum Yield' value of 8,550 psi for the 6.625" OD, 0.562" thick...
I am writing on behalf of grosenbalm (original post-er)
JohnBreen, how do you know it will take 7100 psig to start permanent deformation of ?
Is there a specified %SMYS not to be exceeded in ASME B31.3?
Thanks all.
