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  • Users: nejenrod
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  1. nejenrod

    Retrofitting a vertical tank to receive a dimple steam jacket

    Specs: Vertical Atmospheric Storage Tank Built 7/14/1969 Shell- 20-91/2" seam to seam x 120"I.D. x 3/16" thick Bottom Head- 120-3/8" O.D. x 1/4 Top Roof- 85.7 sq. ft. x 3/16 All three components are 304 s/s The bottom head is welded to (8)4" Sch 40 pipe c/s. New...
  2. nejenrod

    Caustic Tank (21%) Temperature Hick-Up

    I have a 22' diameter x 15'ht carbon steel (A36) tank. It operates at ambient (85oF) temperature under normal conditions. Built 2002 to API 650 standards with acceptable QA/QC records. Shell plate chemical composition: C=0.18, Mn=0.75, P=0.01,S=0.006, CU=0.02, Al=0.038. Current thickness...
  3. nejenrod

    PWHT Inconel 625 (.625") to C/S (.625) with S/S clad

    Story line: Vessel built 1994 Vessel diameter 7'0 ID Top head, shell and bottom c/s 516 gr 70 (1.750"thk) with s/s clad 304 (.125")=total=(1.875") Steam jacket total vessel encompassed. 1st failure 2000 bottom head corroded,,,decision made to replace bottom head with...
  4. nejenrod

    WPQ thickness qualified for P1-P8.

    First timer-Welding a 8-s/80 c/s to 8-s/80 s/s. Is the welder qualifed to weld P1-P1 & P8-P8 up to 1.00"?

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