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API RP 581:2025

Current

Current

The latest, up-to-date edition.

Risk-Based Inspection Methodology

Available format(s)

PDF

Language(s)

English

Published date

31-01-2025

$1,642.03
Including GST where applicable
Summarise this standard

This recommended practice, API 581, provides semiquantitative analysis procedures to establish an inspection program using risk-based methods for pressurized fixed equipment including pressure vessel, piping, tankage, pressure-relief devices (PRDs), and heat exchanger tube bundles.

DocumentType
Standard
Pages
692
PublisherName
American Petroleum Institute
Status
Current
Supersedes

Frequently Asked Questions

No — API 581 is a United States standard published by American Petroleum Institute (API), with its listed region as United States.

API 581 is American Petroleum Institute (API)'s standard for risk-based inspection, while API 571 covers process equipment damage and inspection practices (United States). API 581 provides principles or quantitative methods for planning inspection based on equipment failure risk. API 571 provides guidance on damage mechanisms, piping inspection or welding inspection relevant to refinery and process equipment.

API 581 is used by asset owners and integrity teams prioritising inspection of process equipment. It is a United States standard published by American Petroleum Institute (API).

API 581 provides principles or quantitative methods for planning inspection based on equipment failure risk. It is a United States standard published by American Petroleum Institute (API).

API 581 provides principles or quantitative methods for planning inspection based on equipment failure risk. In practice it is applied by asset owners and integrity teams prioritising inspection of process equipment.
$1,642.03
Including GST where applicable