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 Committee Scope

Welcome to the home page of the API Subcommittee on Inspection and Mechanical Integrity (SCIMI). The SCIMI develops industry standards that address inspection and mechanical integrity issues related to refining process equipment. Issues of particular interest to the SCIMI include: safe practices in the inspection of and repair of pressure vessels, aboveground storage tanks, and piping; equipment reliability; corrosion mechanisms; and reducing capital and maintenance costs. Each meeting of the subcommittee provides a forum for an information exchange on problems and opportunities where industry experts share experiences from operations around the world.

The SCIMI work program of documents includes:

API 510 - Pressure Vessel Inspection Code
API 570 - Piping Inspection Code
RP 572 - Inspection of Pressure Vessels
RP 573 - Inspection of Fired Heaters and Boilers
RP 574 - Inspection of Piping System Components
RP 575 - Inspection of Aboveground Storage Tanks
RP 576 - Inspection of Pressure-Relieving Devices
RP 577 - Inspection of Welding and Metallurgy
RP 578 - Material Verification Program for New and Existing Alloy Piping Systems
RP 580 - Risk-Based Inspection
RP 581 - Risk-Based Inspection - Base Resource Document
RP 583 - Corrosion Under Insulation
RP 584 - Integrity Operating Windows
RP 585 - Pressure Equipment Failure
RP 586 – NDT Methods for Equipmen​​​​t Damage Mechanisms
Bulletin 587 - Guidance for the Development of Ultrasonic Examiner Qualification Programs
RP 588 - Source Inspection for Fixed Equipment​​Bulletin 589 – Fixed Equipment Mechanical Integrity Lessons Learned
Bulletin 590 – Common Terms & Definitions for SCIMI Documents
Bulletin 592 – Elements of a Fixed Equipment Mechanical Integrity Program
Technical Advisory Group for RP 751, Section 6/Annex G/Annex H

Chair:   Brent Ray, Marathon Petroleum Corporation
Vice-Chair:   Mark Geisenhoff, Flint Hills Resources

Click on “Calendar of Events" under Links for meeting logistics and other information.



 Ballot IDStatusResultsOpensClosesDescription
Committee ID : 18031684SCIMI RP 580 Task Group
5543ClosedResolution Required09/07/202110/13/2021API RP 580 4th Ed 2nd ballot REDLINE ONLY
Committee ID : 18052135SCIMI RP 581 Task Group
5545ClosedResolution Required08/10/202109/13/2021API RP 581 4th Ed Detection Isolation Mods & RFI 8388
5544ClosedResolution Required07/26/202109/13/2021RP 581 Risk-Based Inspection PRD Revision
5582ClosedResolution Required09/10/202110/08/2021API 581 Discharge Coefficient for Gas/Vapor Release (AI 2014-023) REDLINE
Committee ID : 676811SCIMI Subcommittee
5546ClosedResolution Required07/27/202108/10/2021API 510 11th Ed Pressure Vessel Inspection Code 2-week REDLINE ONLY
5540ClosedResolution Required07/22/202109/20/2021RP 578 4th Ed. Guidelines for a Material Verification Program (MVP) for New and Existing Assets
5536ClosedIn Progress07/19/202110/05/2021API RP 582 Welding Guidelines for the Chemical, Oil, and Gas Industries
5543ClosedResolution Required09/07/202110/13/2021API RP 580 4th Ed 2nd ballot REDLINE ONLY
5579ClosedIn Progress09/10/202110/31/2021API 653-2021 F1 RT of welds around inserts or thickened inserts with penetrations
5580ClosedIn Progress09/10/202110/31/2021API 653-2021 F2 Extent of radiography at weld repairs in door sheet reinstallation
5581ClosedIn Progress09/10/202110/31/2021API 653-2041 Rev 1 PT in lieu of Vacuum Box or Solution Film
5583ClosedIn Progress09/10/202110/31/2021API 653-2044 Friction Stud Welding for Bolted-On Retrofits and Repairs
5584ClosedIn Progress09/10/202110/31/2021API 653-2051 Limited Ext of Bottom Svc Interval After Non-Complying Rob Insp Results
5585ClosedIn Progress09/10/202110/31/2021API 653-2052 Bottom Corrosion Repair Methods
5578ClosedIn Progress09/09/202110/31/2021API 938 C - FOR COMMENT ONLY
5604ClosedResolution Required09/21/202111/07/2021RP 586 1st Ed, Section 2: Inspection for HTHA
5628ClosedResolution Required10/04/202111/08/2021API 570 5th Ed - Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems
5601ClosedResolution Required09/20/202111/08/2021RP 572 5th Ed, Inspection Practices for Pressure Vessels Appendix A
5602ClosedResolution Required09/20/202111/08/2021RP 572 5th Ed, Inspection Practices for Pressure Vessels Appendix B
5600ClosedResolution Required09/20/202111/08/2021RP 572 5th Ed, Inspection Practices for Pressure Vessels Main Body / Appendix C REDLINE ONLY
5617ClosedResolution Required09/30/202111/11/2021API RP 576 5th Ed - Inspection of Pressure-relieving Devices – First official Ballot
5659ClosedIn Progress12/02/202101/13/2022API 510 7.4 Justification
5660ClosedIn Progress12/02/202101/13/2022API 510 Sections 5.1.1/5.4.1 Should/Shall Reconciliation
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 API SCIMI Master Scorecard
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 API-SCAST (SubCommitttee on Above Ground Storage Tanks)
 Interpretations - API Refining Equipment Standards
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