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RECEIVED JUL 2 8 2014 14.3 Mild steel parts shall be deburred and galvanized. ENVIRONMENTAL HEALTH 15.0 Tank Accessories - Tank Heating Systems DEPARTMENT 15.1 Heating systems for use with polyethylene tanks shall be designed to meet specific requirements such as tank material type, tank size, low ambient temperature, and desired maintenance temperature. 15.2 All control components of the heating system shall be mounted in water tight, high impact plastic box(es) with a gasketed cover. 15.3 All heating system components shall be Nema 4 rated and factory pre -wired for 110 VAC. All connections shall be labeled to prevent errors in field installation. 15.4 Each control box shall carry a decal attached to the inside surface of the cover, on which an electrical wiring diagram will be printed. 15.5 Each control box shall contain two temperature controls. One control shall regulate the maintenance temperature setting and the other control shall regulate the high temperature setting. The maintenance temperature setting should be set at the desired maintenance temperature. The high temperature setting shall be adjusted to 10 degrees above the desired maintenance temperature to a maximum of 130 degrees Fahrenheit. All control systems must be designed with a power off failure mode. 15.6 The heating panels shall be designed to wrap around and lie flat against the surface of the secondary containment tank. The heating panels shall have a maximum heating density of 0.022 watts per square centimeter. All heating panels and sensor bulbs shall be attached to the tank with 2" wide duct tape. The high temperature sensor shall directly sense the temperature of the heating panels on the secondary containment tank. The maintenance temperature sensor shall directly sense the temperature of the inner primary tank. Under no circumstances shall cable type heaters be used with polyethylene tanks. 15.7 Insulation used shall be polyurethane foam with a density of 2.0 - 3.0 lb. /ft ^3 with a "R" value of 8.33/in. The foam shall be applied with a nominal thickness of 2" to all external tank surfaces except the tank bottom shell. 15.8 Upon completion of application and curing of the insulation, two full coverage coats of latex mastic coating shall be applied to the surface of the insulation in such manner as to seal the insulation from the outside environment. 16. Warranty 16.1 The tank shall be warranted for three years in regards to defects in materials and workmanship. The warranty on fittings and accessories that are supplied by the tank manufacturer will be for one year. The warranty will begin at time of shipment. 17. Marking, Packing and Packaging 17.1 The tanks shall be marked to identify the product, date (month and year) of manufacture, capacity, and serial number. The tank shall be shipped with a 3 of 9, HRI bar code label containing tank description, manufacturing order number, part number, serial number, manufacturer, and date. 17.2 The proper caution or warning signs as prescribed by OSHA standard 29 CFR 1910.106 shall be customer determined and supplied. 17.3 All packing, packaging, and marking provisions of ASTM Practice D3892 shall apply to this standard. 17.4 Customer specified labeling is available.