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• r <br />(9) Inspection Prior To Placing In Service: <br />Report author has no knowledge of system commissioning <br />activities or testing. <br />(10) Testing for Tightness: <br />The waste oil storage tank was tested by the manufacturer for tightness <br />at an internal pressure of 5.0 psig for 24 hours prior to tank being placed <br />in service. <br />The PVC construction of the used coolant tank precludes <br />pressure testing. <br />(11) Estimated Remaining Service Life: <br />Ancillary Equipment: <br />Galvanized Pipe: 56 years <br />Hoses: 7 years <br />Pumps: 4 years until next elastomer replacement. <br />Waste Oil Tank: <br />The Convault tank is warranted for 30 years so the remaining service life <br />will be at least 11 years. <br />Used Coolant Tank: <br />Normal design life for a polyethylene tank is 20 years. Because this tank <br />is still in sound working condition, the remaining service life should <br />exceed six years from this date. <br />