ASME OM-2022

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Operation and Maintenance of Nuclear Power Plants

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Operation and Maintenance of Nuclear Power Plants

PUBLISH DATE 2023
PAGES 493

ASME OM-2022 is a standard developed by the American Society of Mechanical Engineers (ASME) Committee on Operation and Maintenance of Nuclear Power Plants.

This code establishes the mandatory requirements for preservice and inservice testing and examination of specific components in light-water reactor (LWR) nuclear power plants, including light-water small modular reactors (SMRs).


What it is Used For

The primary use of ASME OM-2022 is to ensure the operational readiness, safety, and reliability of critical mechanical components within nuclear power plants.

It provides the technical and procedural requirements necessary for maintaining safety-related systems and demonstrating their fitness-for-service throughout the life of the plant. The standard specifically covers components that are required to perform a function for:

  • Shutting down a reactor to the safe shutdown condition.
  • Maintaining the safe shutdown condition.
  • Mitigating the consequences of an accident.

Key requirements and uses include:

  • Inservice Testing (IST): Establishes methods, frequencies, parameters, and criteria for periodic testing of pumps and valves (such as motor-operated, air-operated, and check valves) to assess their performance.
  • Pressure Relief Devices: Details requirements for the preservice and inservice testing of pressure relief devices that protect safety-related systems.
  • Dynamic Restraints: Provides requirements for the examination and testing of dynamic restraints (snubbers) used in safety-related systems.
  • Regulatory Compliance: The standard is often incorporated by reference into the regulations of government agencies, such as the U.S. Nuclear Regulatory Commission (NRC), making compliance with its provisions a legally binding requirement for nuclear plant licensees.
  • Personnel and Records: It also specifies requirements for corrective action, personnel qualification, and record keeping related to these testing and examination activities.
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