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  1. alexander123

    TREVITESTS of safety valves

    ahhh.....it's good when things are done carefully. good luck
  2. alexander123

    TREVITESTS of safety valves

    athomas236, Doesn't that seem a little scary? What if the valves don't lift?
  3. alexander123

    TREVITESTS of safety valves

    What is meant by "floated"? Is it just the lifting of the lever? We use a trevitest method all the time with much success.
  4. alexander123

    Pressure vessel attachments

    I believe this would require an "R" stamp, as you are welding directly to the vessel.
  5. alexander123

    Form U1 vs U2

    All- I'll try to wrap this up nice and clean. We have an existing vessel built in 1960 that has a "U" stamp but no NB stamp. Therefore, it is a non-standard vessel that requires a state special to weld on it. We do not have an original U-1 form or other manufacturers data and cannot gain the...
  6. alexander123

    Form U1 vs U2

    All- Thanks. The resolution, including the AI and the jurisdiction: The part was built with a U2 and a NB number. The R3 was not required as the part was NB stamped. The State had to allow in writing the U-2 from, since per code it is required to be attached to a U-1. As stated above, we do...
  7. alexander123

    Form U1 vs U2

    metengr- Unless I am wrong, and I quite often am, NBIC 1050 requires the item to "be inspected and stamped as required by the applicable section of the ASME code.", and it was built to ASME, it has a "U" stamp on the nameplate. So the R3 item would also have to be stamped to at least a U2...
  8. alexander123

    Form U1 vs U2

    Thanks, guys. This vessel is not a State Special as of yet because it is operating under the original installation, grandfathered before the state rules came into effect. We operate it under an API owner-user program. If we do not weld on the vessel, increase pressure, decrease MDMT, etc,or...
  9. alexander123

    U1 Form vs U2

    All- I have an in-service non-standard pressure vessel (no National Board Number)with no U1 and no manufacturing drawings. Per State (jurisdiction ) rules, I cannot weld to the vessel shell. What I have elected to do is install the new 3" nozzle and riser through a new 16" manway cover. The...
  10. alexander123

    Form U1 vs U2

    All- I have an in-service non-standard pressure vessel (no National Board Number)with no U1 and no manufacturing drawings. Per State (jurisdiction ) rules, I cannot weld to the vessel shell. What I have elected to do is install the new 3" nozzle and riser through a new 16" manway cover. The...

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