Does it need a hazardous materials permit?

An operational permit starts above an amount, and the amount depends on the category, the state and sometimes the place.

Section 105.5 of the International Fire Code lists the activities that need an operational permit from the fire code official. For hazardous materials the permit turns on an amount: Table 105.5.22 names one per hazard category and physical state, and sends some categories to their own rules, compressed gases to Table 105.5.9, cryogenic fluids to Table 105.5.11, flammable and combustible liquids to Section 105.5.18, explosives to Section 105.5.16 and LP-gas to Section 105.5.29. A permit is required in excess of the amount, so the amount itself needs none, and some rows require one for any amount at all.

Some answers turn on facts beyond the category. Class I, II and IIIA liquids and cryogenic fluids have one amount inside a building and another outside; carbon dioxide in an enrichment system or a beverage dispenser has its own row; LP-gas is its own section. Where one of these decides the answer and was not given, the check tries both ways and says which question to ask. Two notes of Table 105.5.22 raise the amount for a Class 3 oxidizer kept for maintenance, and their published copies disagree on a quantity in them, so the answer points to the adopted code instead of quoting either.

The permit also decides the signs. Section 5003.5 requires NFPA 704 hazard identification signs at the entrances to where hazardous materials are stored, dispensed, used or handled in quantities requiring a permit, so the answer says whether the signs follow.