API 653 Data Sheets Graded A+ 2024

API 653 Data Sheets Graded A+ 2024 Fitness For Service API 579 Low Pressure Storage Tanks Risked Based Inspection API 620 API 580 Cathodic Protection Tank Bottom Linings API 651 API 652 Welding on in service equipment containing flammables NDE Procedure Guidlines ASME Section V Acceptance Standards for RT of welds Alternative evaluation for pits and LTA's Welder Qualification ASME Section IX Weld Procedure Qualification ASME Section IX Impact testing method and equipment requirements Requirement for new welding electrodes NDE personnel qualification (RT and UT flaw detection) API 650 Appendix for frangible roofs API 2201 ASME Section 8, Div. 1 ASME Section 8, Div. 2 ASTM A370 AWS ASNT SNT-TC-1A 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 Radial length of critical zone measured from shell Bottoms- suggested pad thickness 3-4" 3" Minimum distance between clusters of surface porosity Minimum dimension of shell lap-patch Minimum radius of shell flush-patch 4" 6" 4" 2" in 8" arc 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" 6" Minimum distance between a bottom lap patch and the shell for patches that do NOT extend to the shell 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 Minimum distance to overlap a shell weld when using a lap patch Area to dig when checking for soil-to-air corrosion Typical size of a vacuum box 6"X30" Minimum dimension of a shell flush patch 6-12" 6" 6" 12" or 12 times thickness of replacement plate, whichever is greater 12" Bottoms-minimum distance a 3 lap joint can be from: other 3 lap joints, the shell or annular plate joints Minimum dimension of bottom lap patch that crosses a bottom seam Foundations- suggested height above grade for new tank bottoms 12" 12"