In my presumption ASME and PED/NEN specify a PSV on a pressure vessel.
Currently am in a discussion with a supplier who doesn't want to place a relief valve on the (pressure) vessel, because there is no relief scenario.
I tried to find it in the european standards, but unfotunately no success.
Does anyone have experience with the NEN/ISO/PED on this subject. Can you help me with some references, if there is any?