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VALUED ENGINEERING 203464366S 0S/28/08 02:25pm P. 006 <br />I <br />tlI NSTALI,..,,AT I ON PROCEOURES FORUNC?ERGRC)I.IND STORAGE TANK <br />Gl�nSTEEL L"° BED AND BACKFILLL,l ,; <br />ALL EXCAVATED NATIVE SOIL MUST BE REPLACED WITHA*PPROVEa BACK>=ILL. 00 <br />Nor 9ACKFILL IN LAYERS USING DIFFERENT MATERIALS. <br />APPROVED SACKFILL MATERIALS ARE: <br />I. CLEAN WASHED SAND <br />2. GRAVEL <br />A CLEAN. NATURALLY RovNGIeD AQGRE®A,TE WITH A M I X OF PARTICLE S 1 Z'ES NO1 <br />LESS THAN 1/8' NOR MORE THAN 3/4- IS REOUIREO. THIS MATERIAL 13 <br />COMMONLY CALLED PEA GRAVEL. <br />3. STONE OR GRAVEL CRUSHING$ <br />WAS04ED STONE OR GRAVEL. CRUSHINGS WITH ANOULAR PARTICLE SIZE NOT LESS <br />THAN 1/8' NOR MORE THAN 112" IS REQUIRED. <br />TE T PROCEDURE F R ACKE TANKS AT JOSSITE WHILE TANK IS <br />EMPTY <br />1. BF OUTER TANK MAINTAINS AT LEAST 5.3 IN. HQ. OIC VACUUM FOR ONE HOUR <br />BOTH THE INNER TANK AND OUTER TANK MAY BE CONSIDERED PROPERLY <br />TESTED. <br />2- INTERSITIAL SPACE TO DE VACUUM TESTED ONLY. <br />NOTE: MODERN WELDING COMPANY DOES NOT RECOMMEND HOLIDAY TESTING FOR <br />OI-ASTIEEL It TANKS. <br />UNDERGROUND TANKtS) ARE SUPPLIED WITH EITHER ONE OR TWO INSTALLED LIFTINO <br />LUGS_ DEPENDENT ON TANK SIZE. REFER TO SPECIFIC TANK DRAWING TO DETERMINE <br />THE EMPTY LIFTING WEIGHT OF THE TANK. SEE 'FINISHING INSTRUCTIONS.- ITEM <br />NUMBER 7: FOR APPLICATION OF LIFTING LUG COVERS TO -GLASTORL' TANKS PRIOR Tt <br />9ACKF I LI, I NQ OR COVERING TIME TANK. <br />DO NOT DROP OR ROLL TANX(S) FROM TRUCK INTO EXCAVATED OPENING, <br />LIFTING PROCEDURES <br />SECONDARY TANK <br />AINIAUA <br />' --------------------.. ---.._----- -------- <br />1 <br />IIS'" PRI MARY TANK 1 <br />I I <br />I 1 <br />I 1 <br />THESE INSTALLATION 1Ni7RUCTIoms TAKE PRECEbeNCE OVER ACT 100 INSTRUCTIONS <br />IN ANY AREA OF DIFFGREN46. <br />PAGE 2 OF 2 <br />