Recent content by Sharik

An example of someone else's PSV nameplate:

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

Would Partial Data Reports be required for the new plate exchanger plates?

The scope of repair/alterations would be the replacement of plates or the installation of additional plates.

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...

I would recommend getting a 'boat' sample of the base metal and HAZ and sending to a qualified lab. If there is HIC or SOHIC present, then the welding required for the repair gets much more complicated, preheat temperatures, PWHT, etc.

LittleInch: You would think common sense wouldn't you? RVAmeche: Thank you

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?

Thank you vladrath. But I'm confused on how the Sched 160 piping would meet the requirements of ASME Section VIII, Div. 1, Paragraph UG-135 (b)(1) where it is required the opening through the pipes must have at least the area of the safety valve inlet?

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...

Thank you Gerhardl. I understand calculating the actual flows capable in piping to the PSV. But what about ASME Section VIII, Div. 1, Paragraph UG-135 (b)(1) which requires the cross sectional area of the piping to be at least equal to the cross sectional area of the PSV inlet?

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...

GenB Thank you for the reply. But if the equipment is exempt from the CSA B51 Standard, why would a CRN be required? I'm not getting good replies from the provincial AI.