COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

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6.7.1.3.The following method is shown in FIGURE 6-7: 7.1.2.During installation,provide a clear area in the backfill • attach a wire rope to each end of each hold-down strap; bedding so that the tank rests on the backfill bedding and the • secure the termination of the wire rope; (See SECTION 6.5. sump or bottom fitting is clear. for suggested method.) • center each hold-down strap on each rib marked with the 7.1.3.After setting the tank,fill and tamp the resulting void by arrowhead symbols► ; using hand tools before continuing the backfilling. • place the deadmen on top of the wire ropes on each side of the tank; • lower the deadmen to the bottom of the excavation; • take the slack out of each wire rope and splice the termina- ACAUTION tion of the wire ropes on top of the tank. (See SECTION 6.5.) Adequately ballast the tank(add liquid)in a wet hole or in a dry hole that may become wet(for example, from site nmotfl until the installation is totally completed. Failure to do this may damage the tank or surrounding properly. AWARNING If product is used as ballas4 exermse spedal care in handling. Safeguard against sparks, fire or product spills. Improper handling of product could cause a fire or explosion, and death, serious personal injury or property damage. AWARNING FIGURE 6-7 Do not use air pressure to test tanks that contain or have contained flammable or combustible liquids or vapors. The 6.7.1.4.The following method is shown in FIGURE 6-8: fuel and air mixture could explode and cause death, • loop a wire rope around the deadman at each location that cor- serious personal injury or property damage. Tanks should responds to each rib marked with the arrowhead symbols •4; be air tested before ballasting. • secure the termination of the wire rope; (See SECTION 6.5. 8.1. GENERAL for suggested method.) • lower each deadman to the bottom of the excavation using 8.1.1.Use only approved backfill material. (See SECTION 4.) the wire rope; 8.1.2.Do not mix approved material with sand or in situ soil. • center each hold-down strap on each rib marked with the arrowhead symbols 8.1.3.Do not use in situ soil as backfill material. • bring the live end of each wire rope up to the top of the tank at each marked rib; 8.1.4.All excavated in situ soil must be replaced with approved • take the slack out of each wire rope and splice the termina- material. tion of the wire ropes on top of the tank. (See SECTION 6.5.) 8.2. DRY-HOLE INSTALLATION 8.2.1.Prepare a smooth level bed, 12 inches thick,of approved backfill material. 8.2.2.Place the tank or tanks onto the bed.Do not set Xerxes tanks directly onto a concrete slab,on timbers or cradles,or onto the in situ soil. 8.2.3.As the tank is being placed,slope the tank according to site specifications.(Xerxes does not require that a tank be sloped.The slope is determined by the tank owner's specifications.) 8.2.4.Sloping of tanks may affect accuracy of Xerxes calibra- FIGURE 6-8 tion charts. ® ® 8.2.5.If a double-wall tank is sloped,the monitor should be at the low end. 7.1. GENERAL 7.1.1.If the tank has a bottom sump or fitting,take extra care 8.2.6.Use the tops of the ribs to establish longitudinal level. that the tank does not rest or roll on the bottom sump or fitting Establish lateral level by placing the level across the top of a prior to installation. fitting or a manway. 15