Third Party Inspection for Ground Storage Tank-

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            Reference Documents- 1.     Design code 2.     Purchase order specification 3.     Purchaser's standards 4.     Approved drawings 5.     API 650 6.     API 620 7.     API 653 8.     BS 2654 Inspection Activities from start to finish-              Material Inspection            Fabrication Inspection            Plate Preparation            Shell Courses and Base Plates containing Welded Seams            Post Weld Heat Treatment of Hot Formed Components            Assembly Inspection             Painting and Coating              ...
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Important Point For Pressure Vessel Inspector-E-3

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 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.

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