specifications - FAACO - Federal Aviation Administration Contract ...

.FTWIC-2235June 20093.08 FIELD QUALITY CONTROL:TESTING: Provide the tests as outlined hereinafter and other tests necessary to establish theadequacy, quality, safety, completed status and suitable operation of each system. Tests are to beconducted in the presence of the Contracting Officer.A. The Contractor shall submit in writing to the Contracting Officer the measured groundresistance of each new ground rod, immediately following the test, indicating the locationof the rod, resistance to ground, and the soil conditions at the time the measurementswere made. After all ground rods are installed, they shall then be tied together with thecounterpoise and the resistance to ground of the entire system shall be measured. Theabove tests shall be made with an earth resistance tester. Where additional ground rodsare required to achieve the specified resistance, the Contracting Officer shall be notifiedbefore proceeding with additional work.B. The Contracting Officer shall start the following final tests after complete preliminarytests have been made which indicate adequacy, quality, completion and satisfactoryoperation.1. The Contractor shall complete the form "Electrical Test Report," in sufficientquantity to provide the indicated information for each panelboard andswitchboard in the project.2. The Contractor shall complete the form "Motor Test Report," in sufficientquantity to provide the indicated information for each three phase motor in theproject.3. The Contractor shall submit a summary of the "Electrical Test Report" and"Motor Test Report," noting all deviations from requirements listed below:Plus or minus 5% variation between nominal system voltage and no-load voltage,or plus or minus 5% between no-load and full load voltage.Plus 5% variation between rated and actual motor current.Plus or minus 10% variation between average phase current and measuredindividual phase currents. The Contractor shall balance phase currents of alldistribution equipment within the tolerances specified.4. After the previous tests have been completed, the Contractor shall redistribute theloads where he finds greater than a 20% difference between readings in any twophases. If the Contractor finds any phase loaded above 80% of the rating of itsovercurrent protective device, he shall notify the Contracting Officer.5. After installation of all branch circuits, the neutral in the service entrance switchshall be tested for isolation from ground with an ohmmeter set on its RX1 scale.The incoming neutral shall be temporarily disconnected to accomplish this test.Any contact between the neutral and ground (other than at the service entrance16010-11