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This paper attends to show efforts made at EDF R&D to improve comprehensionof valve parts loadings during operation. Thermal shock in a globe valve isrepresented and modeled using EDF R&D Finite Element Analysis code(Code_Aster). Choices of modeling are discussed and balanced on the basis of"what an engineer can obtain without becoming a researcher". First simulationresults are presented. Attention is focused on the evolution of Body-BonnetBolted Flange Joint (BBBFJ) tightening forces which are simulated during thethermal shock. An experimental setup is also presented for the studied valve,which implies thermocouple implementation for comparison of the simulatedthermal field and strain measurement on each threaded rod to validate themechanical modeling.

Thermal Shock Effects Modeling On A Globe Valve Body-Bonnet Bolted Flange Joint