Hi Manu,

For the safety valve forces you have to consider them at the first elbow after the safety valve. As what I see Mr. Adi was asking of some formula mention in ASME B31.1. You can use the same formula for determining the magnitude of force for the close discharge system. It is mention in the code. If I remember correctly then it is nonmendatory appendices under II-2.3.2

Regards,
RK