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f FLUID FIELD SERVICE MANUAL ID CONTAINMENT section SAFETY bulletin 3 date 2/]j91 supersedes _1j4j84 SAFETY PROCEDURE - UNDERGROUND PETROLEUM Tam` The following procedure will be employed whenever Fluid Containment Field Technician has cause to enter an underground petroleum storage tank, either for inspection or repair. Any additional state, local, or federal regulations must be observed. Additional customer requirements should be cleared through Field Service, General Requirements 1. Only air-powered mechanical tools are to be employed. 2,. The tank is to be mechanically ventilated at all times that a man is inside the tank. 3. Use of an air-supplied mask with Egress cylinder is required at all times unless it can be absolutely. ascertained that the tank has never contained any product. 4. An approved safety harness with lifelines attached must be worn by the man entering the tank, 5. Tanks having an atmosphere over 1300F are not to be entered. Work no longer than 60 minutes in tanks at 100-130 degrees F. 6. Only an approved explosion-proof light source is to be used. 7. A completed Confined Space Entry. Permit is required to be posted prior to each tank entry, visible to those in proximity. 8. A reliable safety observer, with no duties other than assisting and monitoring the OCT technician, must be available at all times. The safety observer is allowed to pass tools and similarly assist the man in the tank as long as voice and preferably visual contact is maintained. If the safety observer must leave the tank, the technician is to halt work and exit the tank. In addition to the primary safety observer, one (1) additional man (stand-by) must be within hearing distance and aware of the air horn signal to help in a physical rescue if required. A SCBA safety harness and an air horn must be available for immediate use by the safety observer, 9. No flash pictures are to be taken in the tank, even with recognized diver's camera,