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IMPORTANT the installer prior ., nstallation. After installation and Compliance with procedures and instructions in this before final backfilling to grade, the tank must be re- guide is necessary for proper installation of Xerxes tested to assure no damage occurred during installation. Century-Cast Underground Storage Tanks. Failure to Tighten all fittings, comply will void warranty of tank and may cause tank pressurize to 5 psig failure. National, state and local construction codes (35KPa), then soap (NFPA 30 and 31) and environmental regulations should entire tank for a pe- be consulted to ensure full compliance. riod long enough to MAX determine that there 1� 5 PSIG OPREPARATION FOR INSTALLATION are no leaks as indi- Although the corrosion resistant Xerxes Century-Cast bated by soap bub- tanks are rugged, care must be taken that they are not sure. (sues. ( a drop Soap testst) pres- — dropped or damaged during delivery and handling on the job site. WARNING The tank must be isolated from the piping system when pressure testing the piping. Tank pressure in excess of 600-900 5 psig voids all warranties. The tank should always be attended during a pressure test, but personnel should avoid manways, fittings and the ends of the tank when the tank is under pressure. • If damage occurs, DO NOT ATTEMPT repairs. Contact chocks�� your Xerxes Century-Cast Tank sales representative, distributor or the Customer Service Representative at Use the lift lug when hoisting the tank;do not use cables the Xerxes Plant nearest you. or chains around the tank. The 10 foot (3 meters) di- ameter tanks have two lifting lugs; both must be used. O BACKFILL AND BEDDING MATERIAL Use guy ropes to guide the tank when required. DO NOT Xerxes Century-Cast Tanks must be installed using ROLL TANK. Whenever tanks are stored at the site, it either gravel or stone/gravel brushings which meet the is necessary to chock them in place to prevent rolling following specifications: (see drawing). When relocating the tank on job site, be sure the new location is free of rock and debris;rechock Gravel after moving the tank. Refer to TABLE I for weight of Use pea gravel(rounded tanks asaguide for capacity oflifting equipment required. particles) with a mini- LI' LO�F mum diameter of Y8 "TABLE I (3mm) and maximum di-ameter of 3/4"(18mm). TANK DATA:ACTUAL GALLONS CU.M AND NOMNAL WEIGHT LBS KGDIAMETER VOLUME WEIGHT F7. M GAL. CU.M LB. KG. 4 1.2 550 2.1 265 1204 1.2 1 010 3.8 400 180 6 1.8 2,200 8.0 950 430 6 .1.8 4,150 15.9 1,650 750 Stone Crushings 6 1.8 6,712 21.7 2,300 1,050 Stone brushings should 8 2.4 2184 8.4 850 385 be washed and free flow- 8 2.4 4,219 16.2 1,200 545 ing.Angular particle size "6.085 233should be between 1/9" O 8 2.4 7,950 30.4 -2000 910fi 8 2.4 9,816 37.6 2,600 1,135 (3mm) and 1/2" (12mm) and must meet ASTM a 2.4 11,681 44.7^ 3,000 1,350 C-33 paragraph 9.1 10 3.0 12,090 45.9 3,300 1,600 requirements. 10 3.0 15t226 57.9 3,700 1,660 10 3.0 20,022 75.8 4,6D0 2,090 NOTE: No more than 3/ of backfill material shall pass through a number B sieve. It is recommended that your backfill supplier certify that the backfill material meets the above specifications. \ NOTE: Fill material must be dry and free of ice and snow. DO NOT 'mss use other backfill materials. If material which meets the specification - � ,2 above is not available,contact your local Xerxes Century-Cast Tank PRE-INSTALLATION T ING sales representative for information on approved alternate materials and installation instructions.Using other than approved bed or backfill n s are tested prior to ship- materials without prior written approval of Xerxes Corporation, will ment, but it is REQUIRED that all tanks be tested by void the tank warranty.