Upendra Tiwari

 JOINT EFFICIENCIES- The inspector must be able to determine the joint efficiency "E" of a vessel weld. Inspector should be able to determine: a) Weld Joint Categories (ASME Section VIII, UW-3); b) Type of radiography (full, spot, or none) performed basis the nameplate markings (RT-1, RT-2, etc.); (UW -11) c) Joint efficiency by reading Table UW-12; d) Joint efficiency for seamless heads and vessels Sections per UW-12 (d); and e) Joint efficiency for welded pipe and tubing per UW-12 (e). Determining joint efficiency may be part of the internal pressure problem since joint efficiency "E" is used in the formulas for determining required thickness or Vessel Part MAWP.

 CORROSION RATES AND INSPECTION INTERVALS The Inspector must be able to calculate: a) Metal Loss (including corrosion averaging) (API 510, Para 7.4) b) Corrosion Rates (API 510, Para 7.1) c) Remaining Corrosion Allowance (API 510, Para 7.1) Remaining Corrosion Allowance = t actual – t required d) Remaining Service Life (API 510, Para 7.2) e) Inspection Interval (API 510, Section 6)

 REFERENCE PUBLICATIONS: A. API Publications: API 510, Pressure Vessel Inspection Code API RP 571, Damage Mechanisms Affecting Equipment in Refining Industry API RP 572, Inspection of Pressure Vessels including Annex B, (all other Annexes are excluded) API RP 576, Inspection of Pressure-Relieving Devices API RP 577, Welding Inspection and Metallurgy B. ASME Publications: Section V, Nondestructive Examination Section VIII, Division 1, Rules for Constructing Pressure Vessels Section IX, Qualification Standard for Welding, Brazing and Fusion Procedures; Welders; Brazers; and Welding, Brazing and Fusing Operators

 ASME Material& Electrode Selection-  (CS) ASME Material& Electrode Selection- https://upendratiwari786.blogspot.com/2021/01/cs-asme-material-electrode-selection.html (CS) (LTCS-Impact Tested (ASME Material&Electrode Selection)- https://upendratiwari786.blogspot.com/2021/01/csltcs-impact-tested-asme-material.html