API 653 Data Sheets Exam
Questions and Answers 100% Pass
Fitness For Service - ✔✔API 579
Low Pressure Storage Tanks - ✔✔API 620
Risked Based Inspection - ✔✔API 580
Cathodic Protection - ✔✔API 651
Tank Bottom Linings - ✔✔API 652
Welding on in service equipment containing flammables - ✔✔API 2201
NDE Procedure Guidlines - ✔✔ASME Section V
Acceptance Standards for RT of welds - ✔✔ASME Section 8, Div. 1
Alternative evaluation for pits and LTA's - ✔✔ASME Section 8, Div. 2
Welder Qualification - ✔✔ASME Section IX
Weld Procedure Qualification - ✔✔ASME Section IX
Impact testing method and equipment requirements - ✔✔ASTM A370
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1
,Requirement for new welding electrodes - ✔✔AWS
NDE personnel qualification (RT and UT flaw detection) - ✔✔ASNT SNT-TC-1A
API 650 Appendix for frangible roofs - ✔✔Appendix F
API 650 Appendix for hot tanks - ✔✔Appendix M
Maximum allowed vertical length of pits on a tank shell - ✔✔2" in 8" Line
Max allowed length of pits in the critical zone that can be repaired by weld build up -
✔✔2" in 8" arc
Radial length of critical zone measured from shell - ✔✔3"
Bottoms- suggested pad thickness - ✔✔3-4"
Minimum distance between clusters of surface porosity - ✔✔4"
Minimum dimension of shell lap-patch - ✔✔4"
Minimum radius of shell flush-patch - ✔✔6"
When calculating tmin for shell LTA, minimum distance away from a rivet where "E" is
always 1.0 - ✔✔6"
Minimum size of a bottom lap-patch that does NOT cross a bottom seam - ✔✔6"
Minimum distance between a bottom lap patch and the shell for patches that do NOT
extend to the shell - ✔✔6"
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 2
, If reusing shell plates, minimum distance to cut from existing shell welds (if plates are
not deseamed) - ✔✔6"
Minimum diagnostic length of RT for vertical or horizontal welds - ✔✔6"
Minimum length of RT when qualifying a welder with RT using a coupon or 1st
production weld - ✔✔6"
Minimum length of RT when qualifying a weld operator with a test coupon - ✔✔6"
Minimum distance to overlap a shell weld when using a lap patch - ✔✔6"
Area to dig when checking for soil-to-air corrosion - ✔✔6-12"
Typical size of a vacuum box - ✔✔6"X30"
Minimum dimension of a shell flush patch - ✔✔12" or 12 times thickness of replacement
plate, whichever is greater
Bottoms-minimum distance a 3 lap joint can be from: other 3 lap joints, the shell or
annular plate joints - ✔✔12"
Minimum dimension of bottom lap patch that crosses a bottom seam - ✔✔12"
Foundations- suggested height above grade for new tank bottoms - ✔✔12"
When adding a shell flush patch that extends to a horizontal shell weld, minimum
distance to cut the horizontal weld past the new vertical welds - ✔✔12"
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 3
Questions and Answers 100% Pass
Fitness For Service - ✔✔API 579
Low Pressure Storage Tanks - ✔✔API 620
Risked Based Inspection - ✔✔API 580
Cathodic Protection - ✔✔API 651
Tank Bottom Linings - ✔✔API 652
Welding on in service equipment containing flammables - ✔✔API 2201
NDE Procedure Guidlines - ✔✔ASME Section V
Acceptance Standards for RT of welds - ✔✔ASME Section 8, Div. 1
Alternative evaluation for pits and LTA's - ✔✔ASME Section 8, Div. 2
Welder Qualification - ✔✔ASME Section IX
Weld Procedure Qualification - ✔✔ASME Section IX
Impact testing method and equipment requirements - ✔✔ASTM A370
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 1
,Requirement for new welding electrodes - ✔✔AWS
NDE personnel qualification (RT and UT flaw detection) - ✔✔ASNT SNT-TC-1A
API 650 Appendix for frangible roofs - ✔✔Appendix F
API 650 Appendix for hot tanks - ✔✔Appendix M
Maximum allowed vertical length of pits on a tank shell - ✔✔2" in 8" Line
Max allowed length of pits in the critical zone that can be repaired by weld build up -
✔✔2" in 8" arc
Radial length of critical zone measured from shell - ✔✔3"
Bottoms- suggested pad thickness - ✔✔3-4"
Minimum distance between clusters of surface porosity - ✔✔4"
Minimum dimension of shell lap-patch - ✔✔4"
Minimum radius of shell flush-patch - ✔✔6"
When calculating tmin for shell LTA, minimum distance away from a rivet where "E" is
always 1.0 - ✔✔6"
Minimum size of a bottom lap-patch that does NOT cross a bottom seam - ✔✔6"
Minimum distance between a bottom lap patch and the shell for patches that do NOT
extend to the shell - ✔✔6"
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 2
, If reusing shell plates, minimum distance to cut from existing shell welds (if plates are
not deseamed) - ✔✔6"
Minimum diagnostic length of RT for vertical or horizontal welds - ✔✔6"
Minimum length of RT when qualifying a welder with RT using a coupon or 1st
production weld - ✔✔6"
Minimum length of RT when qualifying a weld operator with a test coupon - ✔✔6"
Minimum distance to overlap a shell weld when using a lap patch - ✔✔6"
Area to dig when checking for soil-to-air corrosion - ✔✔6-12"
Typical size of a vacuum box - ✔✔6"X30"
Minimum dimension of a shell flush patch - ✔✔12" or 12 times thickness of replacement
plate, whichever is greater
Bottoms-minimum distance a 3 lap joint can be from: other 3 lap joints, the shell or
annular plate joints - ✔✔12"
Minimum dimension of bottom lap patch that crosses a bottom seam - ✔✔12"
Foundations- suggested height above grade for new tank bottoms - ✔✔12"
When adding a shell flush patch that extends to a horizontal shell weld, minimum
distance to cut the horizontal weld past the new vertical welds - ✔✔12"
EMILY CHARLENE © 2025, ALL RIGHTS RESERVED 3
