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Underground Piping <br /> April 1, UPS <br /> i . ��. :.:ae n�• u .i .ir i :-:unit irr �_ n r.! :r� c Y ��. v <br /> Enviroflex® Retractable Underground <br /> Fuel Primary Piping System Specifications <br /> The underground fuel system shall be comprised of components of an <br /> integrated design which shall afford the greatest degree of performance <br /> without environmental contamination in the event of: ground movement, frost <br /> heave, seismic activity, or other normal geophysical situations. <br /> Primary Piping <br /> The primary piping shall be continuous and have no buried or inaccessible <br /> connections or joints. All primary piping connections shall either be above <br /> grade or accessible inside subsurface chambers. <br /> The primary piping shall: <br /> 1. Meet-the minimum standards of Underwriters laboratories Inc.® "QXLT <br /> Nonmetallic Piping, Flammable Liquid, Underground" testing and be so <br /> listed, and Underwriters' Laboratories of Canada, "Nonmetallic Piping, <br /> Flammable Liquid, Underground pipe intended for the underground transfer <br /> of petroleum products at temperatures between-40C and 49C when installed" <br /> testing and be so listed. <br /> 2. Be flexible and capable of a minimum bend radius of 6 inches without <br /> kinking, cracking or breaking. <br /> 3. Have a minimum burst strength rated at S times the anticipated working <br /> pressure developed by the specified pressure pump. <br /> 4. Have sufficient internal hoop strength so as to not collapse under the <br /> anticipated vacuum produce by the specified suction pump. <br /> S. Have metal swivel fittings affixed to the ends in the same machine crimped <br /> manner as when piping was tested by UL&ULC. <br /> 'TOTAL= <br /> CONTAINMENT <br /> rswcn.oe d ors <br />