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E <br />Ventilation of the tank is accomplished by the use of air movers of the eductor type. Air <br />movers of this type are actuated with compressed air, fans and blowers by electric motors or <br />air, or gasoline motor driven. We recommend the use of the Bridgeport Chemical Purging <br />Aerator Method..(Motor must be explosive proof.) <br /># <br /># # <br />Each applicator will insure all precautions will be taken as per these instructions, and the <br />GA27 P specifications for the repair of steel storage tanks. <br />000�, •� <br />1. Remove as much gasoline as possible. (Use explosion -proof pumps and lines). <br />Lines at the pump should be closed and blanked so that no vapors or gasoline can <br />issue from the lines during the maintenance operation. <br />2. Syphon lines must be cut as well as any connections to a common fill line. <br />3. A small quantity of water can be pumped into the tank to float the gasoline from <br />a low spot to where it can be removed from the tank. <br />D-NOMMMi <br />The tank will be thoroughly purged for the removal of flammable vapor <br />sidue car)able of j2roducing flammable vapors in the tank and connected <br />flammable atmosphere, prior to any storage vessel. <br />I IMMINIT1121111119 � 1� 11 1 1 11� I <br />Set up the Glass Armor Aerator as shown in drawing #1. Safety precautions must <br />be taken as follows: <br />a. Suitable grounding must be provided to prevent a spark from igniting a <br />gasoline vapors in the immediate area. I <br />b. Air pressure in the tank must not exceed Five (5) psi. Air supply must be from <br />a diesel compressor that has been safety checked to assure a clean air supply <br />without volatile flammable fumes feeding the air hose. (Diesel or equivalent). <br />2. To provide a suitable ground against static electricity, be sure the copper purging <br />pipe is resting on the bottom of the tank, and that the "Ground" wire from the <br />copper pipe is attached to the fill line and to the nearest water meter. <br />3. To prevent excess air pressure from building up in the tank, set the pressure <br />reducing valve to 5 psi until you are positive that the, vent is free and open. <br />4. Increase air volume to remove as much air as possible without building up pressure <br />in the tank. <br />Page 4 8/80 <br />