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1. Scope <br />Snyder Industries, Inc. <br />Specification #199901 For <br />Polyethylene Upright Double Wall Storage <br />Revision: 3-4-14 <br />RECEIVED <br />JUL 2 8 2014 <br />TankFSNVIRONMENTAL HEALTH <br />DEPARTMENT <br />Contractor shall supply and install all materials, equipment, appurtenances, specialty items, <br />and services required to provide an upright, double wall, flat bottom, closed top, <br />polyethylene storage tank for storage of the chemical application(s) described in Table I. <br />2. General <br />2.1 This specification covers upright, double wall, flat bottom storage tank assemblies. The <br />assembly consists of one cylindrical inner primary tank and one blended form octagonal <br />outer secondary tank. Each tank is molded in one-piece seamless construction by rotational <br />molding (laminated or fabricated tanks will not be accepted). The tanks are designed for <br />above -ground, vertical installation and are capable of containing chemicals at atmospheric <br />pressure. The assembly shall be designed to prevent rainwater from entering the <br />containment tank. The design shall allow direct primary tank base retention for up to seismic <br />conditions per IBC code requirements. The containmenttank shall be designed to hold a <br />minimum of 115% of the normal fill capacity of the primary tank. Included in this <br />specification are requirements for material properties, design, construction, dimensions, <br />tolerances, workmanship, and appearance. Tank capacities are from 550 gallons (2082 L) <br />up to 12,500 gallons (47,313 Q. <br />2.2 This specification does not cover the design of vessels intended for use at pressures above <br />or below atmospheric conditions. It is also not for vessels intended for use with liquids <br />heated above their flash points or temperatures above 130 degrees Fahrenheit for Type II <br />materials. (Note: See 9.1.2 for chemicals being stored above 100 degrees F). Sodium <br />hypochlorite will degrade at elevated temperatures. <br />3. Manufacturer <br />3.1 Tanks shall be manufactured by Snyder Industries Inc. orapproved equal <br />4. Applicable Documents <br />4.1 ASTM (American Society for Testing and Materials) Standards: <br />D618 Conditioning Plastics and Electrical Insulating Materials for Testing <br />D638 Tensile Properties of Plastics <br />D790 Flexural Properties of Unreinforced and Reinforced Plastics and <br />Electrical Insulating Materials <br />D883 Definitions of Terms Relating to Plastics <br />D1505 Density of Plastics by the Density -Gradient Technique <br />D1525 Test Method for Vicat Softening Temperature of Plastics <br />D1693 Test Method for Environmental Stress -Cracking of Ethylene Plastics <br />D1998 Standard Specification for Polyethylene Upright Storage Tanks <br />D2765 Degree of Crosslinking in Crosslinked Ethylene Plastics as <br />Determined by Solvent Extraction <br />D2837 Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials <br />D3892 Practice for Packaging/Packing of Plastics <br />F412 Definitions of Terms Relating to Plastic Piping Systems <br />