Hi,
It was told by our process department that in a segment of Flare Header, magnitude of ρV2 is equal to 212,000 kg/m/sec2 which is slightly higher than allowable (200,000 kg/m/sec2) as per process design practice. Now they are asking piping stress group to confirm whether this is acceptable.
(where ρ-density, V - velocity of flow)

I guess this is the surge pressure at one of the operating situation of flare system. My question is as follows:
1. What is the limiting criteria of &#961;V2 and what about those lines where &#961;V2<200,000 kg/m/sec2 ?
2. Do we really consider surge load in flare header analysis?

Appeciate your suggestion / advice.

Regards