Standard Practice for Pressure Decay Leak Test Method

Importancia y uso:

5.1 The equipment, test duration, and technique should be determined before commencement of the test based on the required test sensitivity or accuracy (see Annex A1 and Annex A2). If the test is used to certify that the vessel has a minimum specified leakage rate, then the test equipment and test duration should be chosen to have a resolution ten times less than the specification and an accuracy which is four times less than the specification. The test should be designed so that the total pressure change is less than 10 % of the starting pressure. Leak test specifications should specify the vessel test pressure or differential pressure. If the test specification does not specify a test pressure, then a safe test pressure should be used that complies with the applicable safety standards8.

Subcomité:

E07.08

Volúmen:

03.04

Número ICS:

23.020.30 (Pressure vessels, gas cylinders)

Palabras clave:

leak; leakage; mass flow; pressure; pressure change; pressure decay; rate of change; vessel;