NFPA 660 and combustible dust in Hawaii

Hawaii operates an OSHA-approved State Plan for most private-sector workplaces and state and local government workers. Most private-sector workplace-safety enforcement in Hawaii is handled through the OSHA-approved State Plan, subject to federal carve-outs. The Hawaii State Plan also covers state and local government workers.

OSHA notes that federal jurisdiction can remain for particular workers or activities even in State Plan states. Confirm the site, employer type, and activity with the responsible office before treating this page as a jurisdiction determination.

OSHA's CPL 03-00-008 is a National Emphasis Program directive. It gives inspection personnel policies and procedures for workplaces that generate or handle combustible dust and addresses fire, flash-fire, deflagration, and explosion hazards. It does not turn this page into a compliance ruling and does not establish a single NFPA 660 deadline for every facility.

Fire-code adoption and local amendments are not inferred from the OSHA jurisdiction category. Ask the local fire marshal or other authority having jurisdiction which code edition and referenced standards apply to the facility. Also check permits, insurer engineering requirements, process changes, material test records, and the date and scope of any prior dust hazard analysis.

Assemble process flow diagrams, equipment and dust-collection information, available material test data, incident and near-miss records, prior DHA reports, management-of-change records, and the list of rooms or enclosures where dust can be generated or accumulate. A qualified provider can then define the site-specific scope instead of pricing from a generic floor-area estimate.