Really interested to hear someone has been through the same pain as me trying to find PCC-1 annex M washers. Same deal - I have been looking to source type 4 and type 6 washers to that spec, and was very surprised at drawing a blank with all the usual suspects in terms of fastener suppliers...
Ok, I've found the answer to my own question. It's actually stated quite clearly in PED itself, rather than being found in the vessel code. I quote here from PED ANNEX I:
2.11.2. Pressure limiting devices
These devices must be so designed that the pressure will not permanently exceed the...
I'll quote EN 13445 directly:
"...the maximum allowable presssure shall not be less than:
a) the differential pressure which will exist at the same specified location in the vessel (or chamber) when the pressure relieving device starts to relieve"
I confess I haven't looked into whether PED...
Hi,
I've been reviewing a design for a deaerator vessel and associated relief stream to be installed at my company. The vessel is designed to EN 13445 which is pretty new to me - our existing vessel population is mostly PD5500 or ASME VIII. I do have a recently purchased copy of EN13445 but I...