Criticality Classification

A structured evaluation to determine the relative importance (criticality) of equipment items based on the consequences of their failure. Criticality analysis considers safety, environmental, production, and cost impacts to classify equipment into criticality categories that drive maintenance strategy, inspection priority, and spare parts stocking decisions.

A structured evaluation framework used to determine the criticality classification of equipment by scoring its failure consequences across multiple dimensions (typically safety, environment, production, and maintenance cost). The matrix provides a consistent, repeatable methodology for ranking equipment, ensuring that criticality assessments are transparent and defensible.

Risk-Based Maintenance and Consequence Classification standard — establishes a systematic approach to maintenance optimization based on criticality and consequence classification of equipment. It provides a methodology for classifying equipment into maintenance categories and defining maintenance strategies based on the consequence of failure.

A methodology that uses risk assessment to prioritize and plan inspection activities for pressurized and other equipment. RBI combines Probability of Failure (driven by damage mechanisms and equipment condition) with Consequence of Failure (driven by process hazards and safety impact) to rank equipment by risk and allocate inspection resources where they will have the greatest impact on risk reduction.

A physical item of plant, equipment, or infrastructure that has value to an organization and is subject to management decisions regarding its acquisition, operation, maintenance, modification, and disposal. In asset integrity management, assets include pressure vessels, piping systems, storage tanks, rotating equipment, structural components, electrical equipment, and instrumentation systems. Each asset has an identity, a defined function, and documented attributes.