(g) 3405.3.7 Rooms or Buildings for Quantities Exceeding the Maximum Quantity Per Control Area
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.
(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).