CMaldini,
I'm not really sure of the validity of your approach, as once patched it becomes difficult to monitor the thickness of the LTA region you will have over plated. In my experience for higher pressures, the PCC-2 patch plate requirements can be impractical due to the eccentricity check...
Hi CMaldini,
In my experience, I have always designed patch plates considering the design pressure. Even if an LTA remains, and the patch plate is not covering a hole, I always take this approach in case the thinning mechanism was to continue. This could certainly be the case for loss...
r6155,
With all due respect, I haven't asked anyone to check my work, and I wouldn't expect any forum members to provide free consultancy. This is a debate on what the code is doing, and at no point have I asked anyone to check my actual calculations relating to the project I am working on...
Hi r6155,
Thanks for the reply. I understand the thickness requirements for the patch plate will be greater than those for the shell due to the eccentricity loading check.
Looking further into Equation (5) I have summarised my thoughts below:
I think the equation does make an assumption...
Hi everyone,
I am looking at specifying a fillet welded patch plate repair to ASME PCC-2. I have demonstrated the proposed patch plate thickness to meet the requirements of the original vessel design code, and I have sized the attachment welds to Equation (4) within Article 212 of PCC-2. These...
