  This paper attends to show efforts made at EDF R&D to improve comprehension
of valve parts loadings during operation. Thermal shock in a globe valve is
represented 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 simulation
results are presented. Attention is focused on the evolution of Body-Bonnet
Bolted Flange Joint (BBBFJ) tightening forces which are simulated during the
thermal shock. An experimental setup is also presented for the studied valve,
which implies thermocouple implementation for comparison of the simulated
thermal field and strain measurement on each threaded rod to validate the
mechanical modeling.
