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section safety <br /> bulletin 3 <br /> date 2/1/91 <br /> page _ 2 of 6 <br /> 10. No air tests are to be performed on a tank containing product. <br /> Reference NFPA 329. ' <br /> 11, Backfill and/or slab must be properly shored and/or removed to prevent <br /> collapse or cave-in. <br /> 12. No product deliveries are to be made to any tank on the site while a <br /> man is in the tank. <br /> Entry Procedures <br /> 1. Instruct Safery Obaerver <br /> A. Monitoring the combustion and 02 meter. <br /> B. Being alert for 'possible sources of ignition (cigarette smokers, <br /> open flames, etc. ) . <br /> C. Constantly watching for erratic movements of the technician while <br /> he is in the tank. <br /> D. Assisting in feeding and pulling lifelines and air lines . <br /> E. Assisting the technician by passing tools, materials , etc, <br /> F. Maintaining visual or voice contact with the man in the tank, <br /> G. Putting on the safety harness before the technician enters the tank <br /> and use of lifelines. <br /> H. Use of SCBA, air horn, and fire extinguisher. <br /> I. Emergency procedure and telephone numbers. <br /> The safety observer is to tell the technician (yell loudly, sound air horn) <br /> to exit tank if; <br /> A. The alarms on the combustible gas and 02 meter go off. <br /> B. The compressor stops or something interrupts or restricts air <br /> supply to the technician. <br /> C. A source of ignition is close by. <br /> D. The movements of the technician indicate he is getting "drunk" or <br /> otherwise unstable. <br /> E. A fire breaks out in the tank or in the immediate area of the <br /> technician in the tank. <br />