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Overall responsibility for compliance with API 653 1.2
Owner
-
Evaluate deterioration on existing shell material 4.3.1.2
Engineer
-
In a corroded area, find t2 (thinnest area exclusive of pit) 4.3.2.1.a
Inspector
-
In a corroded area, determine the vertical lines (L) 4.3.2.1.c
Inspector
-
Determine MFL Threshold 4.4.5.1 Note 1
Owner
-
Perform the Routine In-Service inspection
-
Perform the external inspection
-
Determine the extent of UT measurements on the shell 6.3.3.1
Owner
-
Review the results of CP surveys 6.3.4.1
Owner
-
Assure competency of personnel performing CP surveys 6.3.4.2
Owner
-
Perform the Internal inspection 6.4.1.2
Inspector
-
Choose the RBI to set Internal interval 6.4.2.2.2
Owner
-
Conduct an RBI assessment 6.4.2.2.2
RBI Team
-
Review and approve RBI reassessments every 10 years 6.4.2.2.2
RBI team
-
Maintain tank records 6.8.1
Owner
-
Prepare report after each external & internal inspection 6.9.1
Inspector
-
Maintain inspection reports & recommendations for life of tank 6.9.1
Owner
-
Review inspection findings and recommendations 6.9.3.2
Owner
-
Ensure disposition of all recommended repairs and monitoring 6.9.3.2
Owner
-
Evaluate and accept NDE examination results
-
Authorize all repairs 9.1.3
Inspector OR Engineer
-
Authorize all alterations 9.1.3
Engineer
-
Designate inspection hold points for repairs, alterations, & reconstructions 9.1.3
Inspector
-
Provide general authorization for limited routine repairs 9.1.3
Inspector
-
Approve all proposed methods of design, materials. WPSs. NDE & testing 9.1.4
Inspector OR Engineer
-
Approve all repair, alteration and reconstruction work at hold points 9.1.4
Inspector OR Engineer
-
Approve all repair, alteration, & reconstruction work at completion of work 9.1.4
Inspector OR Engineer
-
Review & approve the use of non-code specified lap patches on bottom 9.10.1.3
Engineer
-
Approve lap patch in critical zone if bottom thickness is less than 0.100" 9.10.1.6.b
Engineer
-
Run the hot tap machine 9.14.5.4
Qualified operator
-
Authorize all reconstruction work 10.1.3
Inspector OR Engineer
-
Review the use of Pre-heat of controlled deposition welding in lieu of PWHT 11.3
Engineer
-
Concur in writing use PWHT alternative for materials of unknown toughness 11.3
Engineer AND Owner
-
Review and approve exempting a hydro after a major repair or alteration 12.3.2.2
Engineer AND Owner
-
Authorize FFS evaluation to exempt a hydro after major repair or alteration 12.3.2.7
Owner
-
Perform FFS evaluation to exempt a hydro after major repair or alteration 12.3.2.7
Engineer
-
Tank w/o nameplate, oversee attachment of new nameplate 13.1.2.2/3
Inspector
-
Perform tank settlement survey B.2.1
Experienced person
-
Do rigorous stress analysis for floor settlement exceeding 653 limits B.3.2/3.2.4
Engineer
-
Verify if floor scans are following the examination procedure G.3.1
Inspector OR Owner
-
Perform qualification tests for floor scanning examiners G.4.6
Owner OR 3rd Party
-
Perform similar service assessments H.1
Inspector OR Engineering (Knowledgeable One)
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