Start from the hazardous materials inventory and the design’s stated approach, then trace each storage and use area through the floor plans, rated construction, ventilation, spill control, fire protection, and signage. AI can flag document conflicts; the design professional and fire official decide compliance.
What does NFPA 400 cover?
NFPA 400 is the Hazardous Materials Code. NFPA describes it as consolidating fundamental safeguards for the storage, use, and handling of hazardous materials in all occupancies and facilities; it does not apply to individual use on the premises of one- and two-family dwellings.
NFPA’s official NFPA 400 page identifies the 2025 edition as current when checked on October 2, 2026. Confirm the edition, local amendments, and project scope that actually govern the work. The publisher’s newest edition does not establish local adoption.
The adopted building or fire code may set its own hazardous materials approach, so record whether the jurisdiction uses NFPA 400, the IFC, or NFPA 1, and how they relate. Flammable liquids follow the NFPA 30 guide and laboratories the NFPA 45 guide.
Start with the inventory
Collect the hazardous materials inventory statement, the code analysis, floor plans with storage and use areas, rated wall plans, mechanical ventilation and exhaust drawings, spill control and secondary containment details, sprinkler and fire alarm drawings, and signage information.
If there is no inventory, record that the review cannot test quantities and keep checking the documents for consistency. Do not infer quantities from room names.
Trace each storage and use area
| Review question | Sources to compare | Decision to record |
|---|---|---|
| Inventory | Inventory statement, code analysis | Confirm the materials and areas listed match between the two. |
| Storage and use areas | Floor plans, equipment plans, room names | Identify areas whose use changed since the inventory was prepared. |
| Separation | Rated wall plan, wall types, door schedule | Match the rated construction the analysis relies on with the drawings. |
| Ventilation | Mechanical exhaust drawings, sequences | Trace exhaust the analysis expects to the mechanical design. |
| Spill control | Plumbing, civil, and architectural details | Check that containment drawn matches the areas that require it. |
| Protection and signage | Sprinkler, fire alarm, and signage drawings | Confirm protection and identification for each area appear in each package. |
See the manufacturing project page and warehouse project page for facilities where storage arrangements change often.
Example: a storage room that moved without its exhaust
Hypothetical example. A corrosive materials storage room is relocated to the opposite side of a warehouse in the current floor plan, while the inventory statement and mechanical exhaust drawings still describe the earlier room. The rated wall plan shows the new room without a rating.
The current floor plan relocates the corrosive materials storage room, while the inventory statement, exhaust drawings, and rated wall plan still reflect the previous location. Please confirm the room and coordinate its separation and ventilation.
The architect, mechanical engineer, and code consultant update their documents together. Whether the arrangement complies is the design team’s and fire official’s decision.
Review hazardous materials coordination with Groundbook
Upload the current project PDFs and relevant specifications to Groundbook. Identify the governing issues and add the applicable NFPA 400 reference from a copy you are licensed to use, where the license permits uploading it. State the edition, amendments, review area, and known exclusions in your instructions.
Compare the hazardous materials inventory and code analysis with the floor plans, rated walls, exhaust, spill control, sprinkler, fire alarm, and signage documents. Flag areas that moved, missing separation or exhaust, and inconsistent descriptions. Use the supplied NFPA 400 reference where applicable and cite both sources.
Groundbook links each potential finding to the sheets and documents behind it. Keep a missing inventory separate from conflicting drawings.
Document review does not classify materials, calculate maximum allowable quantities, or approve the design. Those remain with the design professionals and the authority having jurisdiction.