DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

F. Prior to exposing the connection points to existing mains, verify the thrust restraint on the existingmain. Provide all temporary thrust restraint required to make the connection. Restrain the existingmains in accordance with the Drawings for permanent services.3.6 FIELD QUALITY CONTROLA. General1. Upon completion of piping, but prior to application of insulation on exposed piping orcovering concealed/buried piping, test all piping systems.2. Utilize pressure, media and pressure test duration as specified on Piping SpecificationSchedules.3. Isolate equipment that may be damaged by the specified pressure test conditions.4. Perform pressure test using calibrated pressure gages and calibrated volumetric measuringequipment to determine leakage rates. Select each gage so that the specified test pressure fallswithin the upper half of the gage's range. Notify Contracting Officer 24 hours prior to eachtest.5. Completely assemble and test new piping systems prior to connection to existing pipesystems.6. Acknowledge satisfactory performance of tests and inspections in writing to ContractingOfficer prior to final acceptance.7. Provide all necessary equipment and perform all work required in connection with the testsand inspections.8. Bear the cost of all testing and inspecting, locating and remedying of leaks and any necessaryretesting and re-examination.B. Testing methods and criteria1. Liquid systemsa. Exposed piping shall have zero allowable leakage at the specified test pressure for aminimum testing duration of 2 hours.b. Allowable leakage from buried liquid piping systems shall be less than 0.02 gallonsper hour per IN diameter per 100 FT of buried piping.2. Hydrostatic pressure testinga. For buried piping: Perform testing after backfill and proper compaction oftrenches. Where lines are installed under the National Monument entrance road,perform tests after completion of final subgrade preparation and prior toapplication of surface courses. Notify Contracting Officer at least 48 hours priorto testing. Provide temporary restraints for expansion joints for additionalpressure load under test. Isolate equipment in piping system with rated pressurelower than pipe test pressure by valves or blind flanges.b. For exposed piping: Prepare each section for testing, using adequate bracing andprotect system equipment susceptible to damage by test pressures. Do not paintor insulate exposed piping until successful performance of pressure test.c. Hydrostatic testing of HDPE pipe shall be by monitored make-up water test or,non-monitored make-up water test.1) Monitored make-up water test procedure consists of initial expansion,and test phases. During the initial expansion phase, the test section ispressurized to the test pressure, and enough make-up liquid is added eachhour for three hours to return to test pressure.2) The test phase follows immediately, and shall be two hours. At the end15060 - 704/08 PIPING AND PIPE FITTINGS: GENERAL STATEMENT