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  1. 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...
  2. 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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