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Tank cars shall be unloaded as soon as possible after their arrival at point of delivery, and shall not be used as storage tanks except by permit as set forth in Section 57.105.7 of Chapter 1. Unless otherwise specified by such permit, no tank car containing Class I, II or IIIA liquids shall be allowed to remain on siding at point of delivery for more than 24 hours while connected for transfer operations. During such transfer operations, a qualified person shall be in constant attendance.
The use of air pressure is prohibited. Dispensing from tank cars into drums or other portable containers is prohibited unless facilities have been approved for such operations. Dispensing from tank cars to tank vehicles shall be done only at approved loading racks.
EXCEPTIONS:
1. When a tank car is disabled through accident or mechanical failure and it is necessary to remove the cargo at other than an approved loading rack, such cargo may be transferred to a tank vehicle.
2. When a tank car to tank vehicle unloading operation is performed under permit from the Chief pursuant to Section 57.105.7 of Chapter 1.
Overflow protection for asphalt tank vehicles shall be provided in the form of reservoirs or flashing around fill and vent pipes. These shall be designed and maintained so that hot asphalt will not spill onto tires, brakes, burner equipment, or exhaust system.
Piping or tubing used to transfer heated asphalt to the roof or above grade level shall be a minimum of Schedule No. 40 metal pipe or equal. Flexible piping shall only be used adjacent to the pump or kettle and shall not exceed 6 feet in length. All piping shall be firmly supported at intervals of not more than 12 feet.
When asphalt tank vehicles or piping interfere with the use of or access to the public way, barriers shall be provided at a minimum of 25 feet on either side of the operation and shall clearly indicate that the enclosed area is restricted to use by authorized persons only.
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