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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Visual Examination-as per Code ASME B 31.1

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Visual Examination-
Paragraph-136.4.2
A) Acceptance Standards.
The following indications are unacceptable:
(A.1) cracks — external surface.
(A.2) undercut on the surface that is greater than 1⁄32 in. (1.0 mm) deep, or encroaches on the minimum required section
         thickness.
(A.3) undercut on the surface of longitudinal butt welds.
(A.4) weld reinforcement greater than specified in Table 127.4.2.
                                                                                                                                                       
(A.5) lack of fusion on surface.
(A.6) incomplete penetration (applies only when inside surface is readily accessible).
(A.7) any other linear indications greater than 3⁄16 in. (5.0 mm) long.
(A.8) surface porosity with rounded indications having dimensions greater than 3⁄16 in. (5.0 mm) or four or more rounded
         indications separated by 1⁄16 in. (2.0 mm) or less edge to edge in any direction. Rounded indications are indications
         that are circular or elliptical with their length less than three times their width.



Comments

  1. UnknownFebruary 5, 2020 at 12:50 PM

    Thanks for clear explanation and posting Visual Exam codes

    ReplyDelete

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