Dear All,
I am doing a stress calculation for a metallic line according EN 13480 but the allowable stress for hydrotest is zero (refer to below output).

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Piping Code: EN-13480 = EN-13480, June 2012 NO CODE STRESS CHECK PROCESSED: LOADCASE 1 (HYD) WW+HP
Highest Stresses: (MPa )
Ratio (%): 0.0 @Node 300
Code Stress: 22.4 Allowable Stress: 0.0
Axial Stress: 5.5 @Node 670
Bending Stress: 16.6 @Node 300
Torsion Stress: 0.0 @Node 174
Hoop Stress: 11.1 @Node 15
Max Stress Intensity: 22.0 @Node 300
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I use the version: CAESAR II 2014 Ver.7.00.03.0100, (Build 150704.
Your help will be highly appreciate.
Best regards,
Moussa

Many piping codes use a percentage of yield stress as the limit for hydrotest. Do you have Sy defined?

Thank you Dave,
It's the missing information

Best regards,
Moussa