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API 971

API 971 — Pressure Relief and Depressuring Systems

A recommended practice that provides guidance for the design, operation and management of pressure-relieving and depressuring systems.

Definition

API RP 971 is an American Petroleum Institute Recommended Practice that provides guidance for managing pressure-relieving and depressuring systems throughout their lifecycle. It addresses system performance, inspection, maintenance, operational reliability, documentation and management practices to ensure overpressure protection systems continue to function as intended.

Why It Matters

API RP 971 supports safe plant operation by improving the integrity, reliability and management of pressure-relieving systems that protect personnel, equipment and the environment.

In Practice

API RP 971 complements API RP 576, which focuses on individual pressure-relieving devices, by providing guidance at the overall pressure-relieving system level.

Common Misuse

API RP 971 addresses complete pressure-relieving and depressuring systems, whereas API RP 576 focuses on the inspection and maintenance of individual pressure-relieving devices.

Term Details
Synonyms:
API RP 971; API 971; Pressure Relief; Depressuring; Pressure-Relieving Systems
Classification:
Standards, Codes & Regulations
Standard
Intermediate
Applications

Process Safety; Mechanical Integrity; Pressure Relief; Overpressure Protection; Asset Integrity.

Where It's Used

Managing pressure relief systems.; Reviewing relief system performance.; Planning maintenance of relief devices.; Supporting process safety management.; Verifying overpressure protection strategies.

References

API RP 971

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