Key Terms - Quick Reference
Risk and Governance
Risk-Based Decision-Making
Prioritizing action based on likelihood, consequence, safety-criticality and exposure.
Management of Change
Formal review and approval for changes affecting design, pressure limits, operation, control logic, procedures or emergency response.
Pre-Startup Safety Review
A structured review to confirm that a new or modified facility is ready for safe startup.
Safety-Critical Barrier
A device, system or procedure that prevents or mitigates a serious incident, such as gas detectors, ESD, slam-shut valves, alarms, relief valves or interlocks.
Construction and Commissioning Assurance
Technical Evidence
Records that prove work has been completed correctly, such as calibration certificates, test charts, NDT reports, material certificates, punch-list closure and commissioning packs.
NCR Disposition
Technical review and closure of a non-conformance before acceptance or handover.
As-Built and GIS Integrity
Accurate asset records showing what was actually installed and where it is located.
Gas-In Readiness
Verification that testing, drying, purging, valve line-up, safety devices and documentation are complete before charging gas.
O&M and Integrity
Condition Monitoring
Use of trends, inspection data, vibration, pressure, corrosion data or alarms to identify early deterioration.
Integrity Threat
A condition that may affect pipeline safety, such as corrosion, coating damage, third-party activity, dents, metal loss or abnormal CP readings.
High-Consequence Area
A location where failure can have higher impact on people, property, traffic, business continuity or public safety.
Repeat-Failure Review
Investigation of recurring defects to identify the real cause instead of repeatedly repairing symptoms.
HSE and Emergency Leadership
SIMOPS Risk
Risk created when two or more work activities interact, such as hot work near solvent painting or excavation near live utilities.
Emergency Command
Organized decision-making during an emergency, including evacuation, responder accountability, communication and escalation.
Controlled Burning
In certain gas leak fire scenarios, allowing flame to continue while isolating safely may be safer than extinguishing and creating an unignited gas cloud.
Incident Learning
Using near misses, incidents and drills to identify failed controls and prevent recurrence.
Instrumentation and Digital Operations
Stale Data
SCADA value that is not updating and must not be treated as live information.
Alarm Rationalization
Reviewing alarms so each alarm has a clear purpose, priority, setpoint and operator response.
Cause-and-Effect Logic
Mapping of inputs such as gas detection or high pressure to outputs such as alarms, shutdowns or valve actions.
Audit Trail
Digital record of who changed what, when and from where.
Your Role and Duties - Clarity
Challenge weak evidence
Do not approve commissioning, handover, startup or restart based on incomplete evidence.
Ask whether test records, calibration certificates, inspection results, punch-list closure, NCR disposition and safety-device verification are valid.
Think risk-first
Prioritize work based on safety-criticality, consequence, likelihood and exposure, not convenience, cost or oldest work order alone.
Verify conflicting signals
If field readings, SCADA values, alarms or historian data do not match, verify field condition, instrument health and communication status before deciding.
Control changes
Setpoint changes, logic changes, alarm changes, bypasses and operating-condition changes must be reviewed, approved, tested and documented.
Lead escalation
Repeated alarms, failed safety barriers, abnormal CP trends, regulator instability, emergency-access blockage and recurring leaks must not be normalized.
Protect learning
Near misses, failed drills, repeated defects and incident findings should become corrective actions, not just reports.
Do / Don’t - Quick Reference
Engineering Evidence
Do: Review calibration evidence, test records, NDT results, closure proof, PSSR status and as-built accuracy before acceptance.
Don’t: Accept verbal confirmation, incomplete test packs, missing calibration evidence or unresolved NCRs as “good enough.”
Operations and Integrity
Do: Use trend review, condition monitoring, risk ranking, CP data, inspection records and defect history to guide action.
Don’t: Reset repeated trips, ignore recurring leaks, downgrade alarms without review or defer safety-critical PM informally.
HSE and Emergency Response
Do: Reassess when conditions change, control SIMOPS, maintain muster accountability, verify emergency equipment and lead incident learning.
Don’t: Continue work because the permit was valid earlier, enter confined spaces unprotected, use damaged PPE or bypass emergency controls.
SCADA and Digital Operations
Do: Verify stale data, review alarm flooding, control access, maintain audit trails, validate backups and follow change control.
Don’t: Share logins, edit PLC logic without backup, delete alarm history casually or treat alarm acknowledgement as problem closure.