American Petroleum Institute

Risk-Based Inspection - Second Edition
 N RP 580

Annotation

Industry Scope

Although the risk management principles and concepts that RBI is built on are universally applicable, this RP is specifically targeted at the application of RBI in the hydrocarbon and chemical process industry.

Flexibility in Application

Because of the broad diversity in organizations' size, culture, federal and/or local regulatory requirements, this RP offers users the flexibility to apply the RBI methodology within the context of existing corporate risk management practices and to accommodate unique local circumstances. The document is designed to provide a framework that clarifies the expected attributes of a quality risk assessment without imposing undue constraints on users. This RP is intended to promote consistency and quality in the identification, assessment, and management of risks pertaining to material deterioration, which could lead to loss of containment.

Many types of RBI methods exist and are currently being applied throughout industry. This document is not intended to single out one specific approach as the recommended method for conducting an RBI effort. The document instead is intended to identify and clarify the essential elements of an RBI analysis and program.

Mechanical Integrity Focused

The RBI process is focused on maintaining the mechanical integrity of pressure equipment items and minimizing the risk of loss of containment due to deterioration. RBI is not a substitute for a PHA or hazard and operability assessment (HAZOP). Typically, PHA risk assessments focus on the process unit design and operating practices and their adequacy given the unit's current or anticipated operating conditions. RBI complements the PHA by focusing on the mechanical integrity related damage mechanisms and risk management through inspection. RBI also is complementary to RCM programs in that both programs are focused on understanding failure modes, addressing the modes and therefore improving the reliability of equipment and process facilities.