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 Welding Inspector-SE-2

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Typical documents that may need to be referred to are:

  • The Application Standard (or Code)
  • Quality plans or inspection check lists
  • Drawing
  • QC procedures

Guidance and basic requirements for visual inspection are given by:

ISO 17637 (Non-destructive examination of fusion welds - visual Examination)


Conditions for Visual Inspection (to BS EN ISO 17637)-

  •     Illumination-
              350 lux minimum required. (recommends 500 lux - normal shop or office lighting).
  •    Vision access- 
             Eye should be within 600mm of the surface.
             Viewing angle (line from eye to surface) to be not less than 30°.

                                                     
Weld Terminology  Butt Joint

Weld Terminology Fillet Joint

Duties of a welding inspector during Fabrication Process
  • Before welding.
  • During welding.
  • After welding.

Important point for Welding Inspector-(SE-1)





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