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Where required by paragraph (E)(3)(e)(iii)(3405.3.5.3) or (E)(3)(f)(i)(3405.3.6.1) of this rule, rooms or buildings used for use, dispensing or mixing of flammable and combustible liquids shall be in accordance with paragraphs (E)(3)(g)(i)(3405.3.7.1) to (E)(3)(g)(iv)(c)(3405.3.7.6.3) of this rule.
(i) 3405.3.7.1 Construction, Location and Fire Protection
Rooms or buildings classified in accordance with the building code as listed in rule 1301:7-7-47 of the Administrative Code as Group H-2 or H-3 occupancies based on use, dispensing or mixing of flammable or combustible liquids shall be constructed in accordance with the building code as listed in rule 1301:7-7-47 of the Administrative Code.
(ii) 3405.3.7.2 Basements
In rooms or buildings classified in accordance with the building code as listed in rule 1301:7-7-47 of the Administrative Code as Group H-2 or H-3, dispensing or mixing of flammable or combustible liquids shall not be conducted in basements.
(iii) 3405.3.7.3 Fire Protection
Rooms or buildings classified in accordance with the building code as listed in rule 1301:7-7-47 of the Administrative Code as Group H-2 or H-3 occupancies shall be equipped with an automatic fire-extinguishing system in accordance with rule 1301:7-7-09 of the Administrative Code.
(iv) 3405.3.7.4 Doors
Interior doors to rooms or portions of such buildings shall be self-closing fire doors in accordance with the building code as listed in rule 1301:7-7-47 of the Administrative Code.
(v) 3405.3.7.5 Open Systems
Use, dispensing and mixing of flammable and combustible liquids in open systems shall be in accordance with paragraphs (E)(3)(g)(v)(a)(3405.3.7.5.1) to (E)(3)(g)(v)(c) (3405.3.7.5.3) of this rule.
(a) 3405.3.7.5.1 Ventilation.
Continuous mechanical ventilation shall be provided at a rate of not less than 1 cubic foot per minute per square foot [0.00508 m3/(s • m2)] of floor area over the design area. Provisions shall be made for introduction of makeup air in such a manner to include all floor areas or pits where vapors can collect. Local or spot ventilation shall be provided when needed to prevent the accumulation of hazardous vapors. Ventilation system design shall comply with the building code and mechanical code as listed in rule 1301:7-7-47 of the Administrative Code.
Exception: Where natural ventilation can be shown to be effective for the materials used, dispensed or mixed.
(b) 3405.3.7.5.2 Explosion control.
Explosion control shall be provided in accordance with paragraph (K)(911) of rule 1301:7-7-09 of the Administrative Code.
(c) 3405.3.7.5.3 Spill control and secondary containment.
Spill control shall be provided in accordance with paragraph (C)(4)(3403.4) of this rule where Class I, II or IIIA liquids are dispensed into containers or tanks exceeding a 1.3 gallon (5 L) capacity or mixed or used in open containers, tanks or systems exceeding a 5.3-gallon (20 L) capacity. Spill control and secondary containment shall be provided in accordance with paragraph (C)(4)(3403.4) of this rule when the capacity of an individual container or tank exceeds 55 gallons (208 L) or the aggregate capacity of multiple containers or tanks exceeds 100 gallons (378.5 L).

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