Section 10 Hydraulic tests
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 15 Piping Systems and Pressure Plant - Chapter 4 Pressure Plant - Section 10 Hydraulic tests

Section 10 Hydraulic tests

Parent topic: Chapter 4 Pressure Plant

10.1 Fusion welded pressure vessels

10.1.1 Fusion welded pressure vessels are to be tested on completion to a pressure, p T, determined by the following formula, without showing signs of weakness or defect:

but in no case is to exceed

where
p = design pressure, in MPa
pT = test pressure, in MPa
t = nominal thickness of shell as indicated on the plan, in mm
σ T = allowable stress at design temperature, in N/mm2
σ 50 = allowable stress at 50oC, in N/mm2.

10.2 Mountings

10.2.1 Mountings are to be subjected to a hydraulic test of twice the approved design pressure.

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