Note: For requirements for the installation, repair, upgrade, and closure of such tanks, see Section 414.6.2 of the USBC, Part I, Construction.
Exception: Vapor-recovery piping is allowed to be tested using an inert gas.
Exception: Underground storage tank systems subject to Underground Storage Tanks: Technical Standards and Corrective Action Requirements (9VAC25-580) that are out-of-service shall comply with the temporary closure requirements of 9VAC25-580-310.
Exception: Underground storage tank systems subject to Underground Storage Tanks: Technical Standards and Corrective Action Requirements (9VAC25-580) that are in compliance with the performance standards of 9VAC25-580-50 and 9VAC25-580-60 are allowed to remain temporarily closed for a period of more than one year in accordance with 9VAC25-580-310 as part of the Virginia Department of Environmental Quality's program.
For Group M occupancy wholesale and retail sales uses, indoor storage of flammable and combustible liquids shall not exceed the maximum allowable quantities per control area indicated in the applicable building code unless approved by the building official in accordance with the applicable building code.
Storage of hazardous production material flammable and combustible liquids in Group H-5 occupancies shall be in accordance with Chapter 27 and the applicable building code.
Exception: Metal containers not exceeding 55 gallons (208 L) are allowed to store up to 240 gallons (908 L) of the maximum allowable quantity per control area of Class IB and Class IC liquids in a control area. The building shall be equipped throughout with an approved automatic sprinkler system in accordance with the applicable building code. The containers shall be provided with plastic caps without cap seals and shall be stored upright. Containers shall not be stacked or stored in racks and shall not be located in areas accessible to the public.
Piles shall be separated from each other by at least four-foot (1219 mm) aisles. Aisles shall be provided so that all containers are 20 feet (6096 mm) or less from an aisle. Where the storage of liquids is on racks, a minimum four-foot-wide (1219 mm) aisle shall be provided between adjacent rows of racks and adjacent storage of liquids. Main aisles shall be a minimum of eight feet (2438 mm) wide.
Additional aisles shall be maintained for access to doors, required windows and ventilation openings, standpipe connections, mechanical equipment, and switches. Such aisles shall be at least three feet (914 mm) in width, unless greater widths are required for separation of piles or racks, in which case the greater width shall be provided.
Exception:
Containers stored on approved containment pallets in accordance with Section 5004.2.3 and containers stored in cabinets and lockers with integral spill containment.
Emergency vents shall be in accordance with Section 5704.2.7.4. Emergency vents shall be arranged to discharge in a manner that prevents localized overheating or flame impingement on any part of the tank in the event that vapors from such vents are ignited.
Exception: For tanks, venting shall comply with the applicable building code.
Section 5707.1 to read:
Exceptions:
13 Va. Admin. Code § 5-52-540
Statutory Authority: § 27-97 of the Code of Virginia.