DHA Documentation Tool | DHA.Support

1. Team & Facility Information

Document your DHA team members and facility details per NFPA 660 Section 7.2

Facility Information

Facility Name *

Address

DHA Date *

Next Review Date (5-year max)

Facility Description & Primary Operations

DHA Team Members

Per NFPA 660 7.2.2, DHAs must be performed or led by a qualified person familiar with combustible dust hazards.

2. Applicable Standards & Codes

Identify the NFPA standards and regulations applicable to your facility

NFPA 660 Industry Chapters

Select the chapter(s) applicable to your facility's materials and operations.

Chapters 1-10: Fundamentals (All Facilities) Chapter 21: Agricultural & Food Processing Chapter 22: Combustible Metals Chapter 23: Sulfur Chapter 24: Wood Processing & Woodworking Chapter 25: Other Combustible Dusts & Particulates

Related NFPA Standards

NFPA 68: Explosion Protection by Deflagration Venting NFPA 69: Explosion Prevention Systems NFPA 70: National Electrical Code (Hazardous Locations) NFPA 91: Exhaust Systems NFPA 499: Classification of Combustible Dusts

OSHA Requirements

General Duty Clause (Section 5(a)(1)) 29 CFR 1910.1200 - Hazard Communication 29 CFR 1910.119 - Process Safety Management 29 CFR 1910.307 - Hazardous Locations

Additional Notes

Other applicable standards, local codes, or insurance requirements

3. Materials Assessment

Document combustible materials and their properties per NFPA 660 Chapter 5

Combustible Materials Inventory

Add each combustible particulate material handled at your facility. Include dust test data if available.

💡 Testing Tip: NFPA 660 requires testing or representative data for materials. Key tests include: Go/No-Go screening (ASTM E1226), Kst/Pmax (ASTM E1226), MIE (ASTM E2019), MIT Cloud/Layer (ASTM E1491/E2021), and MEC (ASTM E1515).

4. Hazard Scenario Analysis

Identify process nodes and evaluate hazard scenarios per NFPA 660 Section 7.3

Process Nodes

Define each node (equipment, area, or process step) where combustible dust hazards may exist.

5. Protection Methods

Document existing safeguards and recommended improvements per NFPA 660 Chapter 9

Recommended Improvements

6. Risk Quantification

Document risk assessment methodology and findings

Risk Assessment Method

Assessment Methodology Used

Risk Matrix

Define your risk ranking criteria for severity and likelihood.

	Rare (1)	Unlikely (2)	Possible (3)	Likely (4)	Almost Certain (5)
Catastrophic (5)	5	10	15	20	25
Major (4)	4	8	12	16	20
Moderate (3)	3	6	9	12	15
Minor (2)	2	4	6	8	10
Negligible (1)	1	2	3	4	5

Low (1-4): Monitor Medium (5-9): Action Required High (10-16): Priority Action Critical (17-25): Immediate Action

Overall Risk Summary

Risk Assessment Summary & Key Findings

7. Implementation Verification

Track implementation of recommendations and DHA approvals

Action Item Tracking

Track the status of each recommended action from this DHA.

DHA Approval

Approver Name

Title/Position

Approval Date

Approval Notes / Conditions

🎉 DHA Documentation Complete

You have documented the key elements of your Dust Hazard Analysis. Remember to:

Export your DHA to Excel for permanent records
Have a qualified person review and approve the DHA
Implement recommended safeguards and track progress
Schedule your next DHA review (within 5 years per NFPA 660)

Dust Hazard Analysis Tool