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• Flexiblederground Piping Systems <br /> August 1, 1997 <br /> IlmT 4� '1 ��'C4.3'` tl ��iC��]C <br /> \, <br /> Enviroflex° System Specifications <br /> The retractable underground fuel primary piping system shall be comprised of UL/ULC listed <br /> primary and secondary components for use with petroleum products and/or alcohol-gasoline <br /> mixtures. The piping system must be installed per the manufacturer's instructions and all <br /> federal, state and local codes and regulations. The installed system shall have the capability of <br /> pressure testing the primary and secondary piping at regular time intervals. The primary and <br /> secondary system shall be installed with the correct pipe slope for fluid leakage monitoring. <br /> The piping must also meet the following criteria. <br /> The Primary Pressure Piping Shall: <br /> 1. Be continuous from tank sump to dispenser sump or transition area. <br /> 2. Have all pipe joints secondarily contained and accessible by maintenance personnel. <br /> 3. Have a minimum pressure rating of 50 psig. <br /> 4. Have a minimum burst pressure of five (5) times the rated pressure. <br /> 5. Be flexible and have a minimum bend radius of 12 inches or less without kinking, <br /> breaking or cracking. <br /> 6. Be installed per NFPA 30 Flammable and Combustible Liquids Code and current <br /> industry standards. <br /> 7. Be installed when ambient temperatures are between 0°F and 120°F. <br /> 8. Have sufficient strength to not collapse under full vacuum. <br /> 9. Have corrosion resistant UL/ULC tested fittings. <br /> 10. Use a cone seat with a metal washer to seal the primary fitting to transition <br /> adaptor fittings. <br /> 11. Primary pipe must be retractable. <br /> The Secondary Containment Piping Shall: <br /> 1. Be continuous from tank sump to dispenser sump or transition area. <br /> 2. Have all pipe joints secondarily contained and accessible by maintenance personnel. <br /> 3. Use components that allow the secondary pipe to be air tested at regular time intervals <br /> to ensure secondary integrity. <br /> 4. Be flexible and have a minimum bend radius of 24 inches without kinking, breaking <br /> or cracking. <br /> 5. Be installed per NFPA 30 Flammable and Combustible Liquids Code and current <br /> industry standards. <br /> 6. Be installed when ambient temperatures are between 0°F and 120'F. <br /> 7. Be able to withstand "H-20" burial loads in accordance with AASHTO M294. <br /> 8. Be large enough to remove and replace the primary without excavation of site. <br /> - TOTAL <br /> CONTAINMENT, <br /> PSP400.07(1 of s) <br />