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Study Questions Specified Hydrotest Hold Time Value

13/02/2018
    The value of a particular hold time during a hydrotest cannot be determined in terms of pipeline integrity because the consequences of holding cannot be measured, making any specified hold time of the maximum test pressure arbitrary.
     The value of a particular hold time during a hydrotest cannot be determined in terms of pipeline integrity
    because the consequences of holding cannot be measured, making any specified hold time of the
    maximum test pressure arbitrary. Verifying the safe pressure-containing capability of a pipe- line at its
    maximum allowable operating pressure (MAOP) requires a pressure test of the pipeline. This pressure
    test should exceed the MAOP by a safety margin sufficient to validate the stability of remaining
    anomalies. Regulations specify the duration for which pressure must be maintained, commonly called the
    hold time. ...read more

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