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Is a serial number required on a PSV ASME Code nameplate? If not, how are PSV Service Reports traceable to the particular PSV?

For replacement plates for Plate Heat Exchangers, what are the required documentation? Is a Partial Data Report required or are just Mill Test Reports traceable to the plates sufficient?

Is there a limit between the PSV set pressure and the operating pressure? For example, if a system was designed with a MAWP of 1000 psig and the safety relief valve has a set pressure of 1000 psig, would this be acceptable if the system operating pressure was reduced to 500 psig? The system is...

Where does it state there must not be vegetation growing close to API 650 Storage Tanks. I know there shouldn't be but I need to show someone it is an actual requirement.

Is it acceptable to use in-situ hydraulic testing methods in lieu of removing, dismantling, inspecting, re-assembling and bench testing PSV's installed on a high pressure ASME Section I power boiler?

A safety valve with a socket welded inlet connection, indicates an inlet size on the valve nameplate of 0.75". How does this work? If the inlet piping is 0.75" NPS, Sched 80, the pipe ID is 0.742". But if the inlet piping is 0.75", Sched 160, the pipe ID is only 0.619". Wouldn't the Sched 160...

A safety valve with a socket welded inlet connection, indicates an inlet size on the valve nameplate of 0.75". How does this work? If the inlet piping is 0.75" NPS, Sched 80, the pipe ID is 0.742". But if the inlet piping is 0.75", Sched 160, the pipe ID is only 0.619". Wouldn't the Sched...

I have a question regarding Hydropneumatic Expansion Tank vessels. Paragraph 7.4.3 states: "Hydropneumatic tanks shall have a minimum design pressure of 690 kpa and meet the requirements Section VIII, Division 1 of the ASME Code. A hydropneumatic tank with a maximum diameter of 610 mm, a...

What are the NDE and pressure testing requirements for ASME B31.1 NonBoiler External Piping? I was always under the impression for NBE, everything basically went to the requirements of ASME B31.3, Process Piping.

We have a new ASME Section I boiler under construction and have found an issue with the Secondary Superheater Outlet Header. One of the top support lugs was installed in the wrong location. The superheater header is a P5B material, 1.5" thick, 18" ID and was PWHT'd at header fabrication. We'd...

What is the thickness tolerance for boiler tubes? I know for piping the thickness tolerances are plus/minus 12.5%. Is there something similar for boiler tubes?

There are PSV Test Stands being sold now which have a high pressure compressor feeding 1/2" tubing to the inlet of the PSV. These are being sold as certified for testing all sizes of PSV, via an adjustible clamp/flange assembly. This is quite different than what I'm used to. I've always used a...

There are PSV Test Stands being sold now which have a high pressure compressor feeding 1/2" tubing to the inlet of the PSV. These are being sold as certified for testing all sizes of PSV, via an adjustible clamp/flange assembly. This is quite different than what I'm used to. I've always used...

There is a big discussion going on here, is a Nonintegral, Separately Fired Superheater considered to be ASME Section I or can API 530 be used for tube design? Thanks

Where does it specify when PSV's, which are in steam service, are serviced, the final servicing pop test must be completed using steam?

What are the minimum content requirements to be put onto a PSV Service Tag, attached to the PSV after servicing? I have seen Service Tags with: - Name of the Servicing Organization, - Date of servicing, - Set Pressure, - PSV ID number, - PSV serial number. Is the above a requirement of some...

What are the minimum content requirements to be put onto a PSV Service Tag, attached to the PSV after servicing?

A company has a lot of unidentified carbon steel piping which they would like to use for ASME B31.3, General Service conditions. Is it acceptable to do PMI with a machine such as the SpectroTest Spark Analyzer, determine the chemical composition of the piping and then certify it acceptable for...

Why are there differences between the material stress values listed in ASME Section II, Part D and ASME B31.3, Table A-1? Why are the allowable stresses higher in B31.3?

What are the minimum details required on a PSV Service Tag? I always thought they were: Name of the Service Company, PSV serial number, date tested and set pressure (as long as there were no changes or weld repairs completed). Where can I find this in a Code? I've had a quick look in Section...