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AutoPIPE Wiki 05. How to calculate the allowable stress for hydrotest case?
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              • 05. How to calculate the allowable stress for hydrotest case?
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    05. How to calculate the allowable stress for hydrotest case?

    Applies To
    Product(s): AutoPIPE Vessel
    Version(s): ALL
    Area: General
    Date Logged
    & Current Version
    June 2023
    43.01.01.011

    Problem:

    How to calculate the allowable stress for hydrotest case?

    Solution:

    Refer below references for calculation of allowable stress in hydrotest condition,

    1. According to ASME Section VIII Div. 2, Clause 4.1.6.2, 

    Allowable stress = 95 % of yield strength

    2. According to ASME Section VIII Div. 1,

    Generally allowable stress = 90 % of yield strength.

    Note that 90 % yield limit is not given in code but it is common praxis.

    If you want to change the allowable stress at hydrotest pressure case please follow below steps,

    Step-1: Select user defined safety factors from Vessel Properties<Design Conditions<Design Values<User Defined<Edit

    Step-2: Change C4 % value to desired one. You will get required safety factor.

     

    See Also

    AutoPIPE Vessel

    Bentley LEARN Server

    • AutoPIPE Vessel
    • Hydrotest
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    • Tanaji Gaikwad Created by Bentley Colleague Tanaji Gaikwad
    • When: Thu, Jun 15 2023 7:23 AM
    • Tanaji Gaikwad Last revision by Bentley Colleague Tanaji Gaikwad
    • When: Thu, Aug 3 2023 1:34 AM
    • Revisions: 4
    • Comments: 0
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