Decision Journal

A formal document that captures the technical basis for a significant engineering decision, including the problem statement, the options evaluated, the analysis performed, the selection criteria, the chosen option, and any residual risks or monitoring requirements. EDRs provide a defensible record demonstrating that engineering decisions were made systematically and with due diligence.

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 chronological record of system activities, decisions, and data changes that provides documentary evidence of the sequence of events that have affected a specific operation, procedure, or artifact. In asset integrity management, the audit trail records who made what change, when, why, and with what authorization, creating an unbroken chain of evidence for regulatory compliance and forensic investigation.

Knowledge gained from experience — both positive (what worked) and negative (what went wrong) — that is documented, disseminated, and applied to improve future performance. Lessons learned capture the gap between expected and actual outcomes, the root cause of that gap, and the specific action required to prevent recurrence (for negative lessons) or replicate success (for positive lessons).