# Process Hazard Analysis

> Use this template to pHA worksheet for [chemical_process] using HAZOP-style review.

## Template Metadata

| Field | Details |
|-------|---------|
| Category | Chemicals |
| Owner | [Team or owner] |
| Version | [Version number] |
| Effective Date | [Date] |
| Review Cycle | [Monthly / Quarterly / Annual / Event-based] |
| Status | [Draft / In Review / Approved] |

## Process Scope

Define process unit, chemicals, operating modes, boundaries, and documents reviewed.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Team and Method

List facilitator, SMEs, operations, engineering, EHS, and the PHA method used.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Node Description

Describe each process node, design intent, parameters, and normal operating ranges.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Hazard Scenarios

Document deviations, causes, consequences, severity, likelihood, and risk ranking.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Safeguards

Identify existing engineered, procedural, alarm, interlock, and mitigation safeguards.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Recommendations

List risk reduction recommendations with priority, owner, and target completion date.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Action Tracking

Define closure evidence, management approval, and revalidation timing. Use tables suitable for HAZOP or What-If analysis.

| Item | Details | Owner | Status |
|------|---------|-------|--------|
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |
| [Item or requirement] | [Describe the relevant detail, evidence, or decision] | [Owner] | [Open / Complete] |

### Notes

[Add context, assumptions, exceptions, evidence links, screenshots, calculations, or reviewer comments.]

## Review and Signoff

Document review conclusions, approvals, unresolved items, and next review date.

| Role | Name | Date | Notes |
|------|------|------|-------|
| Preparer | [Name] | [Date] | [Notes] |
| Reviewer | [Name] | [Date] | [Notes] |
| Approver | [Name] | [Date] | [Notes] |