Impact testing of Wear Plates
Impact testing of Wear Plates
(OP)
Hello,
If a vessel to be fabricated needs to be impact tested (materials), does the material for the saddle wear plates also need to be tested?
Also if I am using SA-516-70N material for the shells/heads, does the repad material for nozzles also need to be Normalized?
If a vessel to be fabricated needs to be impact tested (materials), does the material for the saddle wear plates also need to be tested?
Also if I am using SA-516-70N material for the shells/heads, does the repad material for nozzles also need to be Normalized?





RE: Impact testing of Wear Plates
RE: Impact testing of Wear Plates
The saddle wear plate is subject to the same temperature conditions, since it is welded directly to the shell. As such, it has to be impact tested, as required the shell. Also, the same PWHT is required for the assembly of shell/wear plate or at least the wear plate shall be normalised, just like the shell material. Good news however, you don't need to normalise the saddle base plate.
Cheers,
gr2vessels
RE: Impact testing of Wear Plates
If the wear plate is thinner than shell, it may not be required to be impact tested.
All parts should be evaluated individually.
RE: Impact testing of Wear Plates
RE: Impact testing of Wear Plates
RE: Impact testing of Wear Plates
UCS66(a) goes further in saying ' attachments which are essential to the structural integrity of the vessel when welded to pressure containing components'. Does a saddle wear pad fall into this category. Of course each case must be evaluated by a competent engineer, but, I don't think one can say that impact tested material must be used in every situation.
The same goes for normalized material.
Clarifying, I'm talking about minimum Code requirements.