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About This Item


Full Description

The purpose of this recommended practice (RP) is to provide the guidelines for the owner/user to develop and implement a material verification program (MVP) as part of an asset integrity program. The MVP uses positive material identification and other methods to verify that the nominal composition of an asset, an asset component, or weldment within the pressure envelope is consistent with the selected or specified construction materials.

A well-designed and implemented MVP is an important management system used to minimize the potential for the release of hazardous substances due to nonconforming materials of construction.

This RP provides the guidelines for material verification programs involving ferrous and nonferrous alloys during the construction, installation, maintenance, and inspection of new and existing process equipment. This RP applies to metallic materials purchased for use either directly by the owner/user or indirectly through distributors, fabricators, or contractors, and includes the supply, fabrication, and installation of these materials.

This RP applies to all refining and petrochemical industries, and may be applied in other industries and/or businesses at the discretion of the owner/user. It is intended to be applied by any owner/user wishing to verify and/or validate that the materials of construction received, fabricated, and/or installed are in accordance with material and/or company specification(s).

Document History

  1. API RP 578


    Material Verification Program for New and Existing Alloy Piping Systems, Third Edition

    • Most Recent
  2. API RP 578

    Material Verification Program for New and Existing Alloy Piping Systems, Second Edition

    • Historical Version
  3. API RP 578

    Material Verification Program for New and Existing Alloy Piping Systems

    • Historical Version