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Underground Piping <br /> April 1. 1996 <br /> �: . <br /> -10-1 <br /> .:. 101-1,ar ' <br /> Other System Components <br /> Primary & Secondary piping terminations: <br /> Terminations into subsurface containment chambers shall be completed using <br /> watertight bulkheads which shall not expose any metallic components to the backfill <br /> or native soil. <br /> Terminations above grade shall be completed in compliance with all safety codes, <br /> maintain a water tight seal and flexible termination of both primary and <br /> secondary piping. <br /> System Testing <br /> System shall be designed so as to allow the independent, temporary, pressure <br /> testing of all primary and secondary piping components at the time of installation or <br /> during future occasions. <br /> Testing Upon Installation <br /> 1. Primary piping shall be capable of air pressure testing to a minimum of 60 psi <br /> to a maximum of 250 psi. <br /> 2. Secondary piping shall be capable of air pressure testing to a minimum of 3 psi <br /> to a maximum of 5 psi. Hydrostatic and vacuum testing are alternative methods; <br /> contact Total Containment technical support for details. <br /> 3. All piping and conduit bulkhead seals into subsurface chambers shall be tested <br /> for water tightness. <br /> Svstem Monitoring Capability <br /> System shall be designed so that all piping may be sloped to a low point or to a <br /> subsurface chamber in which a sensor may be placed to detect leakage from the <br /> primary piping. <br /> =TOTAL= <br /> -"" CONTAINMENT <br /> rswuo.oe (3 urs) <br />