DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

of the test time, the test section is returned to test pressure by adding ameasured amount of liquid. If the amount of make-up water added doesnot exceed the values listed below, leakage is not indicated.Nominal Pipe SizeMake-Up Water Allowance(IN)(U.S. Gallons/100 FT Pipe)2 0.116 0.603) Non-monitored make-up water test procedure consists of initialexpansion, and test phases. For the initial expansion phase, make-upwater is added as required to maintain the test pressure for three hours.For the test phase, the test pressure is reduced by 10 psi. If the pressureremains steady (within 5% of the target value) for an hour, no leakage isindicated.4) If the test is not completed due to leakage, equipment failure, etc.,depressurize the test section, and then allow it to “relax” for at least eighthours before bringing the test section up to test pressure again.d. Hydrostatic testing of PVC pipe shall show that at the specified test pressure, theallowable leakage shall not exceed 0.01 gallons per hour per inch diameter per100 feet of piping.3.7 CLEANING AND DISINFECTIONA. Cleaning1. Clean interior of piping systems thoroughly before installing.2. Maintain pipe in clean condition during installation.3. Before jointing piping, thoroughly clean and wipe joint contact surfaces and then properlydress and make joint.4. Immediately prior to pressure testing, clean and remove grease, metal cuttings, dirt, or otherforeign materials which may have entered the system.5. At completion of work and prior to final acceptance, thoroughly clean work installed underthese specifications. Clean equipment, fixtures, pipe, valves, and fittings of grease, metalcuttings, and sludge which may have accumulated by operation of system, from testing, orfrom other causes. Repair any stoppage or discoloration or other damage to parts of building,its finish, or furnishings, due to failure to properly clean piping system, without cost toGovernment.B. Disinfection of Potable Water Systems1. After favorable performance of pressure test and prior to final acceptance, thoroughly flushentire potable water piping system any appurtenant devices and perform disinfection asprescribed.2. Perform work, including preventative measures during construction, in full compliance toprovide flushing velocity of not less than 2.5 FT per second.3. As allowed by local authority, drain flushing water to sanitary sewer. Do not drain flushingwater to receiving stream.4. Use continuous feed method of application. Completely isolate system during disinfectionprocedure.15060 - 804/08 PIPING AND PIPE FITTINGS: GENERAL STATEMENT