5706.5.10.2 Venting.

When bottom loading a cargo tank or tank car that is equipped for vapor control and vapor control is not required or used for the product being loaded, the tank shall be vented to the atmosphere to prevent pressurization of the tank. Such venting shall be at a height equal to or greater than the top of the cargo tank or tank car.

5706.5.10.3 Vapor-tight connection.

Connections to the plant vapor control system shall be designed to prevent the escape of vapor to the atmosphere when not connected to a cargo tank or tank car.

5706.5.10.4 Vapor recovery and processing equipment.

Vapor recovery and processing equipment at bulk plants and terminals shall comply with the requirements of FC 5706.8.

5706.5.11 Switch loading.

Cargo tanks or tank cars which have previously contained flammable liquids shall not be loaded with combustible liquids until such tanks or cars and all piping, pumps, hoses and meters connected thereto have been completely drained and flushed.

5706.5.12 Loading racks.

Where provided, loading racks, stairs or platforms shall be constructed of noncombustible materials. Buildings for pumps or for shelter of loading personnel are allowed to be part of the loading rack. Wiring and electrical equipment located within 25 feet (7620 mm) of any portion of the loading rack shall be in accordance with FC 5703.1.1.

5706.5.13 Transfer apparatus.

Bulk and process transfer apparatus shall be of an approved type.

5706.5.14 Indoor transfers.

Cargo tanks and tank cars shall not be located indoors while transferring flammable or combustible liquids.

   Exception: Cargo tanks are allowed under weather protection canopies and canopies of automotive liquid motor fuel-dispensing facilities.

5706.5.15 Cargo tank and tank car.

Cargo tanks and tank cars shall be certified and permitted in accordance with this section.