API 653 Data Sheets-Line Sizes

  1. Repad-Nozzle size that never requires a repad
    • 650:  5.7.2.1
    • ≤ 2 nps
  2. Repairs- On existing tanks, new nozzle must use insert plate if shell is over 1/2" thick and shell material does not meet current MDMT requirements       653:  9.8.6
    > 2 nps
  3. RT- Maximum pipe size when using RT elliptical shot (double-wall technique, double wall view)    V:  T-271.2.b
    3 nps )3-1/2" O.D.
  4. Hot tap- Maximum nozzle size that can be hot tapped when course thickness is > 1/2" and shell has unknown toughness  
    • 653:  9.14.1.1.b.1
    • 4 nps
  5. Definition- When adding a new nozzle, nozzle size to be considered a major alteration
    • 653:  3.20.a
    • > 12 nps
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egf4201
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API 653 Data Sheets-Line Sizes
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API 653 Data Sheets-Line Sizes
Updated