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16 Underground Piping <br />April 1, 1996 <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 incompliance 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_ Cap ability <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 />f CONTAINMENT <br />PSP400.06 (3 of S) <br />