09.B.21 Dispensing Flammable Liquids - General.
- All pumping equipment used for the transfer of Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100ºF (37.8oC) must be listed by a nationally recognized testing laboratory or approved by, and labeled or tagged in accordance with, the Federal agency having jurisdiction, such as the DOT.
- Dispensing systems for Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100ºF (37.8oC) must be electrically bonded and grounded. All fuel tanks, hoses, and containers of 5 gal (18.9 L) or less must be kept in metallic contact while flammable liquids are being transferred; transfer of flammable liquids to containers in excess of 5 gal must be done only when the containers are electrically bonded.
- Flammable liquids must be drawn from, or transferred into, vessels, containers, or tanks within a building or outside only through a closed piping system, from safety cans, by means of a device drawing through the top, or from a container, or portable tanks, by gravity or pump, through an approved self-closing valve. Transferring by means of air pressure on the container or portable tanks is prohibited.
- Areas in which flammable liquids are transferred in quantities greater than 5 gal (18.9 L) from one tank or container to another, must be separated from other operations by at least 25 ft (7.6 m) or a barrier having a fire resistance of at least 1 hour. Drainage or other means must be provided to control spills. Natural or mechanical ventilation must be provided to maintain the concentration of flammable vapor at or below 10% of the lower flammable limit.
- Dispensing units must be protected against collision damage by suitable means and permanent dispensing units must be securely bolted in place.
- Dispensing nozzles and devices for Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100ºF must be listed.
- Lamps, lanterns, heating devices, small engines, and similar equipment must not be filled while hot: these devices must be filled only in well ventilated rooms free of open flames or in open air and must not be filled in storage buildings.
- Dispensing devices must be in all cases at least 20 ft (6 m) from any activity involving fixed sources of ignition.
09.B.22 Service and refueling areas.
- Dispensing hoses must be listed. Dispensing nozzles must be an approved automatic-closing type without a latch-open device.
- Equipment using flammable liquids as fuel must be shut down during refueling, servicing, or maintenance, except for emergency generators. Waiver requests may be reviewed and granted by the local SOHO for operations in remote sites or regions where cold weather conditions pose a significant risk when equipment fails to restart (copy provided to CESO).
- Dispensing of Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100ºF (37.8oC) from tanks of 55 gal (0.20 m3) capacity or more must be by listed pumping arrangement. Transferring by air pressure on the container or portable tank is prohibited.
- Clearly identified and easily accessible switch(es) must be provided at a location remote from dispensing devices to shut off the power to all dispensing devices in an emergency.
- A listed emergency breakaway device designed to retain liquid on both sides of the breakaway point must be installed on each hose dispensing Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100ºF (37.8oC) liquids.
09.B.23 Tank cars/trucks.
- Tank cars/trucks must be spotted and not loaded or unloaded until brakes have been set and wheels chocked.
- Tank cars/trucks must be attended for the entire time they are being loaded or unloaded. Precautions must be taken against fire or other hazards.
- Tank cars/trucks must be properly bonded and grounded while being loaded or unloaded. Bonding and grounding connections must be made before dome covers are removed on tank cars/trucks and must not be disconnected until such covers have been replaced. Internal vapor pressure must be relieved before dome covers are opened.
Knowledge Check Choose the best answer for the question.
9-4. What is the requirement when tank cars/trucks are being loaded or unloaded?
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