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Pressure Test to WP against MAWPx1.5

Pressure Test to WP against MAWPx1.5

Pressure Test to WP against MAWPx1.5

Can somebody enlighten me on which test pressure to govern during recertification of B31.3 and API 6A pipe..it is the working pressure of the pipe itself or 1.5 x maximum allowable working pressure? does any written code or standard to support on each?

RE: Pressure Test to WP against MAWPx1.5

1.0  ASME B31.3, 323.2.2 (a) & 345.4.2 (a) make sure
     all the provisions are carefully read. (1 1/2 x
     the design pressure).

2.0  As for API-6A Im under the impression that this
     standard refers to wellhead fittings.  At any rate,
     fittings are hydrostatically tested at 1.5 x the
     pressure rating irrespective if the governing code
     is API-6A or API-6D.  (Refer to cl. 10.3 of API-6D)

*Pay special attension to MDMT and at what temperature the design pressure is rated at.  

**Make sure you test against the weaker member in the pipping system. i.e. Lowest Pressure Rating (any fitting, specially blinds x 1.5 else pipe design pressure x 1.5)




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