Is there any closed-form formula for allowable torsional moment Mt on vessel nozzle/ flange joint like the same for Fa, Ml & Mc practised by our mentors in this forum ? We consider Mt = sqrt( Ml^2 + Mc^2) & when in doubt check by WRC-107/Nozzlepro for vessel nozzle & Caesar-II flange leakage module for flange leakage.
regards,
sam
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