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Run: Process Hazard Analysis Field Verification

Field-verify your PHA against the actual process unit, equipment tags, safeguards, and operating conditions. Use it to catch undocumented deviations, missing...

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Inspection Scope and Walkdown Setup

Verify the inspection scope matches the intended PHA field verification area, including unit limits, equipment tags, and exclusion areas.
Confirm the team is using the latest approved reference documents for the walkdown.
Verify that knowledgeable personnel are present to support field verification and answer equipment-specific questions.
Confirm entry requirements, hot work restrictions if applicable, and task-appropriate PPE before beginning the walkdown.

Equipment Identification and Configuration

Verify vessel, pump, line, valve, and instrument tags in the field match the approved drawings and process labels.
Check for bypasses, temporary hoses, blanked connections, removed components, or undocumented modifications.
Verify piping routes, tie-ins, and directional indicators against the current P&ID and field conditions.
Confirm critical valves, blinds, and isolation devices are in the correct position for the process state being verified.
Record all observed deviations, including temporary changes, undocumented fittings, and discrepancies requiring MOC review.

Safeguards and Protective Systems

Verify relief valves, rupture disks, and discharge paths are present, labeled, and not blocked or isolated.
Confirm critical alarms, interlocks, and shutdown devices identified in the PHA are installed and accessible for verification.
Verify emergency stop stations, isolation valves, and shutdown controls are visible, unobstructed, and reachable.
Check dikes, curbing, drains, sumps, and containment systems for damage, blockage, or loss of capacity.
Verify physical barriers, machine guarding, and restricted access controls are in place where needed.
Document any absent, damaged, bypassed, or degraded safeguards that could affect the PHA conclusions.

Operating Conditions and Process Deviations

Inspect pumps, flanges, valves, hoses, vessels, and connections for signs of leakage, corrosion, or deterioration.
Compare field indications to expected operating conditions and note any abnormal readings or instrument discrepancies.
Verify whether any bypassed instruments, temporary hoses, or isolated equipment are present and properly controlled.
Check for blocked access, combustible accumulation, or materials stored near hot surfaces, rotating equipment, or emergency equipment.
Record any abnormal operating condition, including the exact location, tag number, and observed condition.

Documentation, Recommendations, and Follow-Up

Verify that every non-conformance or recommendation has a responsible person and target completion date.
Classify findings by risk significance so high-priority items can be escalated appropriately.
Confirm the finding has been entered into the appropriate management system for follow-up and closure.
Enter the date for re-verification or closure review if the deficiency requires a return visit.
Provide a concise summary of the walkdown, key deviations, safeguards verified, and any immediate escalation required.
Signature confirming the inspection was completed and findings are accurate to the best of the inspector's knowledge.

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