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FEE: 05 "99 14:45 FR COHTP I NP-1EHT =.i 1LLIT I0NSr14 c42 5020 TO '9-151089158426 F. 1 /2'c <br /> q�. <br /> section —Safe <br /> bulletin <br /> date 2/1/91 <br /> page _ b of 5 <br /> ll. Final Exit <br /> Remove all. equipment. Double check to erasure that all caps used to <br /> plug pipes are removed. Sign Entry Permit and include with the field <br /> trip report documents. <br /> Procedure for Itternal Work <br /> If the repair work involves cutting into a tank or grinding adjacent to a <br /> -L-crack-or- salit._that—extends -through--_-thy- shell wall, prior to any work the <br /> tank must be ventilated such that the vapor level is less than 10% LEL <br /> initially and remains lower than 20% of the LEL during work. Tanks that <br /> have been in service are to be continuously monitored to ensure these <br /> conditions are met. <br /> The above requirements must be met for field installation of fittings. <br /> l <br /> a:saf3 <br />