Process Hazard Analysis Conductor
Conduct structured process hazard analyses using HAZOP, PHA, and LOPA methodologies
What You Can Do
Guide your team through comprehensive Process Hazard Analysis (PHA) using HAZOP, What-If Analysis, and LOPA frameworks to identify potential failures, assess their consequences, and develop defensible safeguard hierarchies. This skill helps you document hazard evaluations with full audit trails, prioritize process safety improvements, and ensure compliance with regulatory requirements before incidents occur.
Features
systematically examine deviations from intended design using guide words to uncover hidden failure modes
quantify risk reduction and validate that each critical scenario has adequate independent safeguards
encourage creative thinking from cross-functional teams to surface non-obvious hazards and scenarios
map controls from elimination through engineering, administrative, and PPE layers with effectiveness ratings
ensure PHA scope covers OSHA PSM, EPA RMP, and API RP 750 requirements with documented evidence
categorize hazards by severity and likelihood with clear recommendations for risk acceptance or mitigation
evaluate automation changes, sensor failures, and human factors in safeguard effectiveness
guide diverse stakeholders (operations, engineering, maintenance, HSE) through structured discussion and consensus
Example Output
HAZOP Analysis Output Example:
| Node | Parameter | Deviation | Cause | Consequence | Safeguards | Risk | Recommendation |
|---|---|---|---|---|---|---|---|
| Reactor Feed | Temperature | Too High | Heater setpoint failure | Runaway reaction, temperature >150°C | Thermocouple + alarm, manual isolation valve | Medium | Install redundant temperature transmitter with SIL 2 shutdown logic |
| Separator | Pressure | High High | Outlet valve blockage | Vessel overpressure, rupture risk | Relief valve (set 45 psig), pilot-operated backup | Low | Quarterly relief valve testing, add differential pressure alarm |
LOPA Summary Example: Hazardous Event: Loss of cooling water → reactor runaway
- Severity: Catastrophic (fatality potential)
- LOPA Risk Reduction Factors: Cooling system redundancy (PFD 0.05) × Temperature sensor (PFD 0.1) × Operator response (PFD 0.1) = Combined PFD 0.0005
- Result: Risk reduced from intolerable to acceptable with 3 layers of protection
What-If Findings:
- Seasonal corrosion buildup in cooling lines during winter shutdown
- Third-shift staffing gaps reduce operator awareness of early warning signs
- Interdependency between two safeguards (both fail if control room power lost)
What's Included
- SKILL.md instruction file with HAZOP, LOPA, and What-If Analysis frameworks:
- PHA Facilitation Checklist: team selection, pre-meeting preparation, meeting structure, documentation standards
- HAZOP Analysis Template: node-parameter-deviation-cause-consequence-safeguards matrix with guide word prompts
- LOPA Worksheet: hazardous event definition, independent protection layer (IPL) assessment, SIL determination, risk reduction verification
- Safeguard Hierarchy Matrix: control effectiveness ratings (elimination, engineering, administrative, PPE) with examples
- Regulatory Compliance Cross-Reference: OSHA PSM, EPA RMP, and API RP 750 requirement mapping to PHA scope
- Risk Matrix & Decision Tree: severity/likelihood categories with action thresholds for immediate remediation vs. capital projects
Who It's For
- Process Safety Managers — leading cross-functional hazard analysis teams and ensuring regulatory compliance
- HSE Directors — overseeing PHA programs across multiple facilities and validating safeguard effectiveness
- Operations Managers — assessing process changes, debottlenecking projects, and seasonal operational variances
- Engineering Leads — evaluating design modifications, control system upgrades, and automation implementation risks
- Incident Investigation Teams — analyzing near-misses and serious incidents to identify systemic hazards requiring preventive action
Best For
- Initial PHAs for new processes, equipment, or significant modifications
- Revalidation of existing PHAs (5-year reviews or per regulatory timeline)
- Control system and automation changes requiring safeguard re-assessment
- Preparation for regulatory audits (OSHA PSM, EPA RMP, state agency inspections)
- Capital project prioritization — identifying and ranking process safety improvements by risk reduction impact
- Cross-functional team facilitation on complex or high-consequence processes (reactors, separation, pressurized storage)
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