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IMPORTANT
<br /> Compliance with procedures and instructions in this guide p.s.i.g.(35 KPa)for a period long enough to determine
<br /> is necessary for proper installation of Xerxes Century- that there are no leaks as indicated by a drop in pressure.
<br /> Cast Underground Storage Tanks. Failure to comply
<br /> will void warranty of tank and may cause tank fail- SECONDARY(EXTERNAL)TANK TEST
<br /> ure. National, state and local construction codes(NFPA NEVER PRESSURIZE THE SECONDARY TANK
<br /> 30 and 31) and environmental regulations should be WITHOUT CONNECTING IT TO THE PRIMARY TANK.
<br /> consulted to ensure full compliance. FAILURE TO DO SO WILL VOID ALL WARRANTIES.
<br /> Open the valve on the Xerxes hose/valve assembly.
<br /> 1O PREPARATION FOR INSTALLATION Pressurize to 5 p.s.i.g. (35 KPa), then soap entire tank
<br /> USE CRANE TO OFF LOAD FROM TRUCK. for a period long enough to determine that there are no
<br /> leaks as indicated by soap bubbles or a drop in pressure
<br /> Although the corrosion resistant Xerxes Century-Cast (soap test).
<br /> tanks are rugged, care must be taken that they are not
<br /> dropped or damaged during delivery and handling on After the final test, remove the hose/valve assembly.
<br /> the job site. KEEP BOTH TANKS VENTED.
<br /> Use the lift lug(s) whenWARNING
<br /> hoisting the tank; do not
<br /> use cables or chainsA601-901
<br /> The tank must be isolated from the piping system when
<br /> around the tank. Two lift- pressure testing the piping. TANK PRESSURE IN EX-
<br /> ing lugs are provided onCESS OF 5 p.s.i.g. VOIDS ALL WARRANTIES.
<br /> the 15,000 and 20,000The tank should always be attended during a pressure
<br /> gal. tanks. Both must betest, but personnel should avoid manways, fittings and
<br /> used. Use guy ropes to the ends of the tank when the tank is under pressure.
<br /> guide the tank when re-
<br /> quired. DO NOT ROLL If damage occurs, DO NOT ATTEMPT repairs. Contact
<br /> TANK. Whenever tanks your Xerxes Century-Cast Tank sales representative,
<br /> are stored at the site, it is necessary to chock them in distributor or the Customer Service Representative at
<br /> place to prevent rolling. When relocating the tank on job the Xerxes Plant nearest you.
<br /> site, be sure the new location is free of rock and debris;
<br /> rechock after moving the tank. Refer to TABLE I for weight O BACKFILL AND BEDDING MATERIAL
<br /> of tanks as a guide for capacity of lifting equipment
<br /> required. Xerxes Century-Cast Tanks must be installed using ei-
<br /> ther gravel or stone/gravel crushings which meet the
<br /> TABLE I
<br /> TANK DATA: following specifications:
<br /> ACTUAL GALLONS(CU.M)AND APPROXIMATE WEIGHT LBS.(KG) Gravel
<br /> FT.
<br /> DIAMETER VOLUME WEIGHT Use clean and well- I
<br /> M GAL. cu.M LB. KG. r a d e d p e a grave I
<br /> 4.5 1.3 555 2.1 1,100 500 g - `I V8
<br /> 4.5 1.3 1,010 3.8 1,400 640 (rounded particles) with
<br /> 6.4 1.9 2,376 9.0 3,000 1,360 a minimum diameter of o�
<br /> 6.4 1.9 2,973 11.3 4,000 1,820 1/8"(3mm)and maximum -
<br /> 6.4 1.9 3,869 14.6 5,000 2,270 diameter of 3/4" 19mm . p it
<br /> 6.4 1.9 5,661 21.4 6,500 2,950 ( ) �3�4 11
<br /> 8.1 2.5 6,085 23.0 5,000 2,270
<br /> 8.1 2.5 7,950 30.1 6,000 2,720
<br /> 8.1 2.5 9,816 37.2 7,000 3,180
<br /> 8.1 2.5 11,681 44.2 8,000 3,630 Stone Crushings
<br /> 10.5 3.2 10,590 40.1 7,000 3,180
<br /> 10.5 3.2 12,090 45.8 8,000 3,630 Stone crushings should r V:I'
<br /> 10.5 3.2 15,226 57.6 9.500 4,310 be washed and free flow-
<br /> 10.5 3.2 20,022 75.6 11.500 5.220 ing. Angular particle size - ; �
<br /> should be between 1/8" - o�
<br /> (3mm) and '/2" (13mm) v2°,
<br /> O PRE-INSTALLATION TESTING and must meet ASTM ff
<br /> All Xerxes Century-Cast Tanks are tested prior to ship C-33 paragraph 9. 1
<br /> ment, but it is REQUIRED that all tanks be tested by the requirements.
<br /> installer prior to installation.After installation and before
<br /> final backfilling to grade,the tank must be retested to as-
<br /> sure that no damage occurred during installation. NOTE: No more than 3% of backfill material shall pass through a
<br /> number 8 sieve. It is recommended that your backfill supplier certify
<br /> PRIMARY(INTERNAL)TANK TEST that the backfill material meets the above specifications.
<br /> Prior to installation, plug and tighten all fittings except NOTE: Fill material must be dry and free of ice and snow. DO NOT
<br /> use other backfill materials. If material which meets the specification
<br /> one fitting on a manway. Connect the pressure test to above is not available,contact your local Xerxes Century-Cast Tank
<br /> this fitting. Close the valve on the Xerxes hose-valve as- sales representative for information on approved alternate materials
<br /> sembly. Pressure test the primary (internal) tank to 5 and installation instructions.
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