thread1452-421887: Flush-type - please clarify this for me hello colleagues. I work for Axion energy (former Exxon) here in Argentina. We currently building a 40.000 m3 crude tank. I have the contractor site manager and owners debating me about the NDE required on the Shell connections at the first course. These are 3 8" connections, one of them for the swamp, and they have LTR. I have asked the contractor to MT the root before proceeding with filling of the Groove and they just ignored me. I have asked them to MT the cap or final pass, and they are ignoring me as well. I am about to write down an NCR, but before I proceed with it, I need advices. My understanding is that these type of connections are treated as Flush type or actually are, and the NDE requirements are the ones mentioned on para 184.108.40.206 of API 650 standard. Contractor keeps saying I am wrong, and they are making a big deal out of it. At the company I used to work before, YPF oil, contractors already knew they had to MT these welds. They want to go by the code, and they told me and my boss, that those are not Flush type shell connections, and they will not perform the NDE required.
First course is 33 mm thick.
Any advise would be appreciated.