API 653 Data Sheets Questions and Answers 100% Correct

API 653 Data Sheets Questions and Answers 100% Correct Fitness For Service - Answer- API 579 Low Pressure Storage Tanks - Answer- API 620 Risked Based Inspection - Answer- API 580 Cathodic Protection - Answer- API 651 Tank Bottom Linings - Answer- API 652 Welding on in service equipment containing flammables - Answer- API 2201 NDE Procedure Guidlines - Answer- ASME Section V Acceptance Standards for RT of welds - Answer- ASME Section 8, Div. 1 Alternative evaluation for pits and LTA's - Answer- ASME Section 8, Div. 2 Welder Qualification - Answer- ASME Section IX Weld Procedure Qualification - Answer- ASME Section IX Impact testing method and equipment requirements - Answer- ASTM A370 Requirement for new welding electrodes - Answer- AWS NDE personnel qualification (RT and UT flaw detection) - Answer- ASNT SNT-TC-1A API 650 Appendix for frangible roofs - Answer- Appendix F API 650 Appendix for hot tanks - Answer- Appendix M Maximum allowed vertical length of pits on a tank shell - Answer- 2" in 8" Line Max allowed length of pits in the critical zone that can be repaired by weld build up - Answer- 2" in 8" arc Radial length of critical zone measured from shell - Answer- 3" Bottoms- suggested pad thickness - Answer- 3-4" Minimum distance between clusters of surface porosity - Answer- 4" Minimum dimension of shell lap-patch - Answer- 4" Minimum radius of shell flush-patch - Answer- 6" When calculating tmin for shell LTA, minimum distance away from a rivet where "E" is always 1.0 - Answer- 6" Minimum size of a bottom lap-patch that does NOT cross a bottom seam - Answer- 6" Minimum distance between a bottom lap patch and the shell for patches that do NOT extend to the shell - Answer- 6" If reusing shell plates, minimum distance to cut from existing shell welds (if plates are not deseamed) - Answer- 6" Minimum diagnostic length of RT for vertical or horizontal welds - Answer- 6" Minimum length of RT when qualifying a welder with RT using a coupon or 1st production weld - Answer- 6" Minimum length of RT when qualifying a weld operator with a test coupon - Answer- 6" Minimum distance to overlap a shell weld when using a lap patch - Answer- 6" Area to dig when checking for soil-to-air corrosion - Answer- 6-12" Typical size of a vacuum box - Answer- 6"X30" Minimum dimension of a shell flush patch - Answer- 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 - Answer- 12" Minimum dimension of bottom lap patch that crosses a bottom seam - Answer- 12" Foundations- suggested height above grade for new tank bottoms - Answer- 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 - Answer- 12" Length of shell to bottom weld that if repaired is considered either a major repair or alteration - Answer- >0" Typical anchor profile of steel surface required for installation of a tank bottom lining - Answer- 1.5-4.0 mils Maximum undercut of a vertical weld and nozzle weld - Answer- 1/64" Maximum undercut of a horizontal weld - Answer- 1/32" Maximum diameter of surface porosity cluster - Answer- 3/32" Maximum allowed discontinuity in a bend test - Answer- 1/8