Procedure to re-rate a pressure vessel 1

[PVchemEng]

If an operating pressure vessel needs to work at a higher temperature and lower pressure than the originally design,
what's the right procedure to re-rate the pressure vessel?

 

[metengr]

You have two options;

See the national Board Inspection Code, NB-23

OR

API 510 Pressure Vessel Inspection Code:
In-Service Inspection, Rating,
Repair, and Alteration

 

[PVchemEng]

I will check both!
thanks for your prompt answer.

 

[stanweld]

Also check your Jurisdiction requirements.

 

[bernoullies123]

As stanweld notes... check your local requirements. The above would probably mean something in America but mean nothing anywheres else.