Use API-510 to Stamp non-ASME Code vessel

[meca]

I have a pressure vessel that was not originally designed or constructed to ASME Sec. VIII, Div. 1. It wasn't designed or constructed to any code that I can determine. In API-510 Para 7.7 there is a section for "Evaluation of Existing Equipment with Minimal Documentation". I've followed this criteria and checked the vessel using ASME Sec. VIII, Div. 1 assuming A-283-C material with no radiography. An inspection has also been performed by an API-510 inspector, and UT readings taken. My question is if we follow API-510 Para 7.7 and do the pressure test per ASME Sec. VIII, Div. 1, can we determine the design conditions for the vessel (Temperature, MAWP, etc..) and put a nameplate on the vessel and indicate that the vessel is suitable for these design conditions per API-510? I realize it wouldn't be a "U" or "R" stamped vessel, but I don't know if this is the intent of Para 7.7.

 

[rustbuster]

I think you could re-rate in accordance with API-510 but you will need agreement from an authorized inspector to affix a name plate if this is truly a pressure vessel.

 

[GenB]

the design conditions can be obtained using
materials specs, thickness, type and eff. of welds.

 

[Duwe6]

Cannot 'Stamp' it, but you file everything togather, with a cover Memo signed by the Owner that states: Based on the evidence and calculations, this vessel is acceptable for operation at "X" MAWP and "Y" MAWT. Did a bunch of this at a refinery that had thrown away their dwgs & U-1's. It's 'legal' as long as ASME is not invoked, only API-510. Additionally, ASME does not apply after the vessel has been used. It is a design & construction code only. Used items have to be evaluated to either NBIC or API-510. 510 seems more rational to me, personally.

 

[metengr]

Better check with the Jurisdiction first and foremost, where the vessel will be in operation. Second, if the vessel is insured you may need to check with the insurance agency. They may or may not have a say about this.

 

[JStephen]

I doubt there's anything in any of the codes or in the laws that would actually prohibit you from putting a nameplate on as you suggest. However, when an ASME nameplate is attached to a vessel, there are specific requirements that must be met before it is put there. Where there are no specific requirements, it wouldn't mean anything or accomplish anything to have it on there, either.

You might note that some jurisdictions, such as Texas, regulate boilers but not pressure vessels in general.

You might note that API regulates use of their monogram, but not the use of "API" as a description of standards used on nameplates.

 

[stanweld]

Surely the design drawing provides design pressure and temperature. If you do not have the design drawing, you must have the current operating conditions. You can establish the adequacy of the operating conditions through ASME VIII, Div. 1 calculations or though other international standards. Can you determine the actual stamped ID of the material. Can you establish the Manufacturer through stamped identification?

 

[stanweld]

Assuming that you have performed the inspections and calculations as defined in 7.7 of API 510, the nameplate is your company's and should provide a name or alpha-numeric designation of the vessel in addition to the MAWP and max temperature and minimum allowable temperature and date as defined in API 510. The nameplate should not bear the API monogram.