API 570 is a widely recognized and respected standard among professionals in the petroleum and chemical sectors for its comprehensive guidelines on inspecting, repairing, and maintaining piping systems. Due to its complexities, the scope of API 570 is important to be understood thoroughly to ensure that piping systems meet safety standards and regulatory requirements. In this article, we will provide an overview of the detailed scope covered by API 570 to equip engineers and industry professionals to become more familiar with.

What Is API 570?

API 570 is a standard set by the American Petroleum Institute (API) that focuses on inspection, repair, alteration, and rerating of in-service piping systems used in the petroleum and chemical industries. It outlines guidelines for ensuring the safety and integrity of these piping systems throughout their operational lifespan. This standard helps ensure that piping systems meet regulatory requirements and operate safely, reducing the risk of accidents and ensuring the reliability of industrial facilities.

What Are The Scope of API 570 –  Piping Inspection Code?

The scope of API 570, also known as the Piping Inspection Code, includes guidelines for inspecting, repairing, altering, and rerating in-service piping systems in the petroleum and chemical industries.

General Application of API 570

1. Coverage

Scope of API 570 (General Application – Coverage)

  • Inspection, Rating, Repair, and Alteration: API 570 covers these procedures for metallic and fiberglass-reinforced plastic (FRP) piping systems.
  • In-Service Piping: The inspection Code applies to hydrocarbon and chemical process piping that has been placed in service unless specified as optional.
  • Exclusions: It does not cover specialty equipment like instrumentation, exchanger tubes, and control valves.
  • Other Industries: While primarily for hydrocarbon and chemical processes, owners/users in other industries may use this code as needed.
  • Retired Piping: Piping systems retired and abandoned in place are no longer covered, but they may still need inspection for safety.
  • Temporarily Out of Service: Mothballed piping systems, preserved for potential future use, are still covered by the code.

This format should make it easier to grasp the main points of API 570’s scope and coverage.

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2. Intent

In API 570 intent, there are several details that need to be considered:

1. Purpose

API 570 outlines the requirements for in-service inspection, condition monitoring, and repair guidance for piping systems. Its primary intent is to ensure the ongoing integrity of these systems to maintain safe operation.

2. Inspection and Condition-Monitoring Program

The Code specifies the need for a comprehensive inspection and condition-monitoring program. This program should provide accurate and timely assessments to identify any changes in piping conditions that could compromise safety.

3. Responsibility of Owner/Users

Owners/users are expected to respond to inspection results that indicate the need for corrective actions. These actions are necessary to uphold the integrity of piping systems, aligning with appropriate risk analysis.

4. Target Users

API 570 is designed for organizations that have access to or maintain an authorized inspection agency, a repair organization, and technically qualified personnel such as piping engineers, inspectors, and examiners, as defined in Section 3 of the Code.

3. Limitation

The scope of API 570 in its general application and limitation can be summarized as follows:

  • Original Construction Requirements: API 570 should not replace the original construction requirements that govern a piping system before it is put into service. It is essential to adhere to the specific construction guidelines designed for the piping system during its initial installation.
  • Compliance with Regulatory Requirements: API 570 must not be used in conflict with any existing regulatory requirements that are applicable to the piping system. It is crucial to follow all prevailing regulations and standards mandated by regulatory authorities.
  • Stringency of API 570: If the requirements outlined in API 570 are more stringent or strict compared to the regulatory requirements, then the guidelines specified in API 570 shall take precedence and govern the maintenance, inspection, and repair activities related to the piping system.

Specific Applications of API 570

The API 570 standard focuses on inspecting and maintaining piping systems. It includes guidelines for dealing with non-metallic materials, specifically fiber reinforced plastics like fiberglass-reinforced plastic (FRP) and glass-reinforced plastic (GRP).

However, it does not cover other types of non-metallics like extruded materials such as high and low-density polyethylene. If you need guidance on issues related to the degradation and inspection of FRP piping, you should refer to API 574 and MTI 129 for more information.

Included Fluid Service

Except as provided in 1.2.2, API 570 applies to piping systems for process fluids, hydrocarbons, and similar flammable or toxic fluid services, such as the following:

  1. raw, intermediate, and finished petroleum and chemical products;
  2. catalyst lines;
  3. hydrogen, natural gas, fuel gas, and flare systems;
  4. sour water and hazardous waste streams;
  5. hazardous fluid services;
  6. cryogenic fluids such as: liquid N2, H2, O2, and air;
  7. high-pressure gases greater than 150 psig such as: gaseous He, H2, O2, and N2.

Optional Piping Systems and Fluid Services

The fluid services and classes of piping systems listed below are optional with regard to the requirements of API 570:

  1. Hazardous fluid services below designated threshold limits, as defined by jurisdictional regulations.
  2. Water (including fire protection systems), steam, steam-condensate, boiler feed water, and Category D fluid services as defined in ASME B31.3.
  3. Other classes of piping that are exempted from the applicable process piping code.

In summary, API 570 is a widely respected standard among piping engineers due to its comprehensive coverage of inspecting, repairing, and maintaining piping systems in the petroleum and chemical industries.

API 570 standard contains clear guidelines and alignment with industry practices make it a go-to resource for ensuring safety and compliance. Its popularity underscores its effectiveness in promoting industry standards and reliability, making it essential for piping professionals globally.

In addition, if you are looking to deepen your understanding of the API 570 standard and prepare for certification, PetroSync offers valuable support. Our API 570 training course is designed to equip engineers like you with the knowledge and skills needed to navigate the intricacies of the standard effectively.

With PetroSync instructor’s expert guidance and practical approach, you will gain confidence in applying API 570 guidelines to real-world scenarios, ensuring you are well-prepared to uphold industry standards and excel in your role as a piping engineer.

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