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FEE 0�5' 999 14:43 FR CONTAINMENT SOLIITICNS-314 5_42 5020 TO 9-151089cS426 F.10i2,0 <br />+ section fete <br />bulletizt 3 <br />date 2/l/91 <br />page 3 of 6_ _ <br />The safety observer is not to enter the tank for rescue if the man carr get <br />out himself. <br />If physical rescue is required, the safety observer is to; <br />A. Summon the backup man (sound air horn if necessary). DO NOT F_y ER <br />the tank without back-up present, <br />3. Attempt to pull the technician toward the entry hole by means of <br />the lifeline. <br />C. Attach lifeline to safety harness. <br />D. Put on the SCBA and test operation. <br />E. Enter the tank and assist in the rescue and removal of the man, <br />after the stand-by person is present at the tank entry hole. <br />2. Remove All Possible Product <br />Use a hand pump or approved flammable fluid pump to remove as much <br />product as possible. No more than 1" of product should be in the tank <br />prior to ventilation. Remove submersible pump if it is accessible. <br />3. Start Ventilation <br />Connect an approved air mover to exhaust air from the fill pipe or <br />other pipe or hose within 12" of tank bottom. The air mover must be <br />grounded when in use, Extend exit point of exhaust at least 6' above <br />grade. <br />Continue to ventilate until test with the combustible gas meter <br />indicates the LE'L is less than 10X within 12" of tank bottom. Remove <br />fill pipe to check. This can take between 2 and 24 hours depending on <br />the amount of product left in the tank. <br />If tank lines are manifolded, the line to the tank to be entered might <br />have to be broken and blanked off to isolate the tank and a! -low <br />defuming of the tank. <br />4, Cut Ent y Hole <br />Cut entry hole only after tests confirm the vapor level within 12" <br />of the tank bottom is less than 20% of the LEL. Use only an air <br />powered saw. The minimum hole size to facilitate rescue if required is <br />24" x 24". <br />