Deferral Register

The postponement of a planned inspection, maintenance activity, or corrective action beyond its originally scheduled date. Deferrals require formal justification (typically an engineering assessment demonstrating that the deferred activity does not compromise safety or integrity), approval by authorized personnel, interim monitoring or compensating measures, and a firm rescheduled date. Deferrals are governed decisions tracked in the deferral register.

The comprehensive planning process for a major planned shutdown of a process unit or facility for inspection, maintenance, repair, and capital modification activities. Turnaround planning encompasses scope development, work list prioritization, resource planning, schedule optimization, logistics, safety planning, and post-turnaround recommissioning. Turnarounds are typically the single largest maintenance expenditure and the primary opportunity for internal inspection of fixed equipment.

A discrete, auditable event in the lifecycle of a governed artifact (asset, risk, MOC, inspection) that records a decision, approval, status change, or significant action. Governance events capture who did what, when, why, and with what authorization. They form the backbone of the audit trail and provide the evidence chain for regulatory compliance.

A formal, documented decision to accept a specific risk without further treatment, based on a determination that the risk level is within the organization's risk tolerance criteria or that further risk reduction is not reasonably practicable (ALARP). Risk acceptance requires explicit authorization from a designated decision-maker, documented rationale, a defined review period, and specified conditions or limitations.