What are the difference considerations applied to Safety Relief Valves when protecting either a PD5500 code vessel or an ASME VIII one? I know of only one, namely that that PD5500 limits the overpressure in all sizing scenario's to 10% whereas ASME VIII allows up to 21% in fire sizing conditions.
Hi
The upstream straight length requirements are covered in ISO 5167 but what about downstream straight length requirements if any. I have a situation were the 16" pipe work has to be increased to 18" in order to allow a beta ratio less than 0.7 ( even with a max DP of 500mbar ), but...