R1 VS MOC
R1 VS MOC
(OP)
A client has replaced the channel and head (bolted) to an existing exchanger. This was for a material upgrade. Understand this requires a MOC, however, is this considered under Section 8 as an alteration and does a MFG R1 tag apply to be affixed to the components.
tks
tks





RE: R1 VS MOC
The NBIC addresses mechanical repair methods and I think a replacement of a bolted head would fall into that category. This means a Natioanl Board R Certificate Holder would have to perform the replacement and any testing required by the NBIC. A Repair nameplate would have to be attached to the vessel and an R-1 Report would have to be completed by the R Certificate Holder and signed by a Commissioned Inspector.