API 570-2024
Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems

Standard No.

API 570-2024

Release Date

2024

Published By

American Petroleum Institute (API)

Latest

API 570-2024

Scope

API 570 covers the inspection, rating, repair, and modification procedures for placed-in-service metallic piping systems and their associated pressure relief devices (PRDs). This inspection code applies to all placed-in-service hydrocarbon and chemical process piping as specified in Section 1.2.1, unless specifically designated as optional in accordance with Section 1.2.2. This publication does not cover the inspection of special equipment, including impulse tubes, sensing tubes or instrumentation-related piping, heat exchanger tubes, and control valves. However, owner-operators in other industries and other services may use this piping code at their discretion. Process piping systems that have been decommissioned and abandoned in place are no longer subject to this in-service inspection code. However, abandoned-in-place piping may still require a certain amount of inspection and/or risk mitigation to ensure that it does not become a safety hazard due to continued deterioration. Process piping systems that are temporarily decommissioned or idle but have been mothballed (preserved for potential future use) are still subject to this code. The purpose of this code is to prescribe an in-service inspection and condition monitoring program, as well as repair guidance necessary to maintain the continued integrity of the piping system. The program should provide a reasonably accurate and timely assessment to determine whether any change in the condition of the pipeline is likely to jeopardize continued safe operation. This specification also states that the owner-operator shall respond to any inspection findings that require corrective action to ensure the continued integrity of the pipeline consistent with an appropriate risk analysis. API 570 applies to organizations that maintain or have access to authorized inspection agencies, repair organizations, and pipeline engineers, inspectors, and auditors, all of which are defined in Section 3. This specification does not cover source inspections of newly manufactured pressure piping. Refer to API 588 for guidance on the supervision of suppliers manufacturing and/or repairing pressure piping to be installed in the field. Owner-operators may employ the services of individuals qualified and certified in accordance with API 588 or this specification. However, depending on the quality of the shop inspection service and the owner-operator's specifications during fabrication, an inspection of the owner-operator's choice may still be required after the new piping system arrives on site. API 570 shall not be used as a replacement for the original construction requirements that apply before the piping system is placed in service; nor shall it be used in conflict with any current regulatory requirements. If the requirements of this specification are more stringent than the regulatory requirements, the requirements of this specification shall prevail. Unless otherwise specified in Section 1.2.2, API 570 applies to process fluid piping systems that are hazardous to personnel, such as hydrocarbons and similar flammable or toxic fluid services and processes.

API 570-2024 Referenced Document

• API RP 2201 Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries
• API RP 571 Damage Mechanisms Affecting Fixed Equipment in the Refining Industry (Second Edition)
• API RP 574 Inspection Practices for Piping System Components*， 2024-02-01 Update
• API RP 576 Inspection of Pressure-relieving Devices*， 2024-09-01 Update
• API RP 577 "Welding Processes, Inspection, and Metallurgy"
• API RP 578 Material Verification Program for New and Existing Assets
• API RP 580 Elements of a Risk-Based Inspection Program
• API RP 583 Corrosion Under Insulation and Fireproofing (SECOND EDITION)
• API RP 584 Integrity Operating Windows (First Edition)
• API RP 585 Pressure Equipment Integrity Incident Investigation (FIRST EDITION)
• API RP 751 Safe Operation of Hydrofluoric Acid Alkylation Units (FIFTH EDITION)
• API RP 939-C Guidelines for Avoiding Sulfidation (Sulfidic) Corrosion Failures in Oil Refineries (SECOND EDITION)
• ASME B16.34 Valves Flanged, Threaded and Welding End
• ASME B31.3 Process Piping*， 2024-12-27 Update
• ASME PCC-1 ASME PCC-1-2019 Guidelines for Pressure Boundary Bolted Flange Joint Assembly
• ASME PCC-2 Repair of Pressure Equipment and Piping*， 2025-06-20 Update
• ASNT SNT-TC-1A Personnel Qualification and Certification in Nondestructive Testing*， 2025-04-01 Update
• NACE MR0103 Petroleum, refining and gas industries Metallic materials with resistance to sulfide stress cracking in corrosive refining environments*， 2025-06-20 Update
• NACE SP0472 Methods for preventing service environment cracking of carbon steel weldments in corrosive oil refining environments*， 2025-06-20 Update
• NFPA 704 Standard System for the Identification of the Hazards of Materials for Emergency Response (Effective Date: 11/3/2020)

API 570-2024 history

• 2024 API 570-2024 Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems
• 2016 API 570-2016 Piping Inspection Code: In-service Inspection@ Rating@ Repair@ and Alteration of Piping Systems (FOURTH EDITION; Addendum 1: May 2017)
• 2009 API 570-2009 Piping Inspection Code: In-service Inspection@ Rating@ Repair@ and Alteration of Piping Systems (Third Edition)
• 1998 API 570-1998 Piping Inspection Code Inspection@ Repair@ Alteration@ and Rerating of In-Service Piping Systems (Second Edition; Addendum 1 - February 2000)
• 1993 API 570-1993 Piping Inspection Code; Inspection@ Repair@ Alteration@ and Rerating of In-Service Piping Systems (First Edition; Supplement 1 - January 1995 Supplement 2 - December 1997)

Standard and Specification