API 653 Data Sheets-Thicknesses

  1. Linings- Thickness of a thin film lining 
    • 652:  3.26
    • < 0.020"
  2. Bottom- Minimum allowed bottom plate thickness when there is a reinforced liner that is > 0.050" thick
    • 653: Table 4.4
    • 0.050"
  3. Bottom- Minimum allowed bottom plate thickness when there is a means to detect and contain leak
    • 653: Table 4.4
    • 0.050"
  4. Roofs- Minimum allowed average thickness of corroded roof plate
    • 653:  4.2.1.2
    • 0.090" in 
    • 100 in2
  5. Shell- Minimum arbitrary shell thickness (used when calculated minimum thickness is below this number)     653:  4.3.3.1
    0.100"
  6. Bottom- Minimum allowed thickness of bottom plate at toe of the external shell-to-bottom fillet weld       653:  4.4.5.7
    0.100"
  7. Bottom- Minimum allowed bottom plate thickness away from critical zone or an annular plate        653:  Table 4.4
    0.100"
  8. Bottom- Minimum allowed plate thickness in critical zone that can be repaired by weld-buildup   653:  9.10.1.6.b
    0.100"
  9. Roof rim- Minimum allowed roof rim thickness
    • 653:  9.13.6.2
    • 0.100"
  10. Roof- Minimum thickness of new roof plate (cone & floating)   
    • 650:  5.10.2.2 & C.3.3.2
    • 635:  9.11.2.1 & 9.11.3.1
    • 3/16"
  11. Roof rim- Minimum thickness of new roof rim
    • 653:  9.13.6.2
    • 3/16"
  12. Bottom- Normal minimum thickness of new bottom plate   650:  5.4.1
    1/4" (0.236")
  13. Bottom patch- Maximum thickness of lap-patch in critical zone  653:  9.10.1.2.a
    1/4"
  14. Brittle- Thickness when brittle fracture is NOT a concern    653:  Fig 5.1
    ≤ 1/2"
  15. Shell patch- Max shell thickness when lap-patches are allowed   653:  9.3.1.2
    1/2"
  16. Shell patch- Maximum patch thickness for a shell lap-patch   653:  9.3.1.3
    1/2"
  17. Weld qualification- When can UT be used in lieu of RT to qualify a welder/welding operator
    • IX: QW-191.2.1.a
    • ≥ 1/2"
  18. NDE- When welding existing shell plate. Thickness that requires 100% examination by RT and MT or PT    653:  12.1.5.1
    > 1"
  19. NDE- Plate thickness which requires 100% of vertical welds to be radiographed
    • 650:  8.1.2.2.c
    • > 1"
  20. Reconstruction- Shell plate thickness that requires all welds to be pre-heated to at least 200° F   653:  10.4.4.3
    > 1-1/2"
  21. Shell Pits- Minimum remaining thickness allowed below a pit  653: 4.3.2.2.a
    1/2 tmin
Author
Anonymous
ID
327183
Card Set
API 653 Data Sheets-Thicknesses
Description
API 653 Data Sheets-Thicknesses
Updated