manufacturers recommendations for initial set time before handling and for full curing time before pressure testing. Cold weather solvent/cement may be utilized only under unusual circumstances and when specifically approved by the Project Representative. DFD PIPING SYSTEM LEAK TESTS Isolate or remove components from system which are not rated for test pressure. Perform final testing for medical and lab gas with all system components in place. Test piping in sections or entire system as required by sequence of construction. Do not insulate or conceal pipe until it has been successfully tested. If required for the additional pressure load under test, provide temporary restraints at fittings or expansion joints. Backfill underground water mains prior to testing with the exception of thrust restrained valves which may be exposed to isolate potential leaks. For hydrostatic tests, use clean water and remove all air from the piping being tested by means of air vents or loosening of flanges/unions. Measure and record test pressure at the in the system. For air or nitrogen tests, gradually increase the pressure to not more than one half of the test pressure; then increase the pressure in steps of approximately one-tenth of the test pressure until the required test pressure is reached. Examine all joints and connections with a soap bubble solution or equivalent method. System will not be approved until it can be demonstrated that there is no measurable loss of test pressure during the test period. Inspect system for leaks. Where leaks occur, repair the area with new materials and repeat the test; caulking will not be acceptable. Entire test must be witnessed by the Division's representative. All pressure tests are to be documented on Division of Facilities Development forms to be provided to the contractor. Test Initial Test Final Test System Medium Pressure Duration Pressure Duration *Below Ground Domestic Water Water N/A 200 psig 2 hr Above Ground Domestic Water Water N/A 100 psig 8 hr Above Ground Non-potable Water Water N/A 100 psig 8 hr Below Ground Non-potable Water Water N/A 100 psig 8 hr Swimming Pool/Fish/Aquarium Water N/A 100 psig 24 hr CONSTRUCTION VERIFICATION ITEMS Contractor is responsible for utilizing the construction verification checklists supplied under specification Section 22 08 00 in accordance with the procedures defined for construction verification in Section 01 91 01 or 01 91 02. END OF SECTION
manufacturers recommendations for initial set time before handling and for full curing time before pressure testing. Cold weather solvent/cement may be utilized only under unusual circumstances and when specifically approved by the DFD Project Representative. PIPING SYSTEM LEAK TESTS Isolate or remove components from system which are not rated for test pressure. Perform final testing for medical and lab gas with all system components in place. Test piping in sections or entire system as required by sequence of construction. Do not insulate or conceal pipe until it has been successfully tested. If required for the additional pressure load under test, provide temporary restraints at fittings or expansion joints. Backfill underground water mains prior to testing with the exception of thrust restrained valves which may be exposed to isolate potential leaks. For hydrostatic tests, use clean water and remove all air from the piping being tested by means of air vents or loosening of flanges/unions. Measure and record test pressure at the in the system. For air or nitrogen tests, gradually increase the pressure to not more than one half of the test pressure; then increase the pressure in steps of approximately one-tenth of the test pressure until the required test pressure is reached. Examine all joints and connections with a soap bubble solution or equivalent method. System will not be approved until it can be demonstrated that there is no measurable loss of test pressure during the test period. Inspect system for leaks. Where leaks occur, repair the area with new materials and repeat the test; caulking will not be acceptable. Entire test must be witnessed by the Division's representative. All pressure tests are to be documented on Division of Facilities Development forms to be provided to the contractor. Test Initial Test Final Test System Medium Pressure Duration Pressure Duration *Below Ground Domestic Water Water N/A 200 psig 2 hr Above Ground Domestic Water Water N/A 100 psig 8 hr Above Ground Non-potable Water Water N/A 100 psig 8 hr Below Ground Non-potable Water Water N/A 100 psig 8 hr Swimming Pool/Fish/Aquarium Water N/A 100 psig 24 hr CONSTRUCTION VERIFICATION ITEMS Contractor is responsible for utilizing the construction verification checklists supplied under specification Section 22 08 00 in accordance with the procedures defined for construction verification in Section 01 91 01 or 01 91 02. END OF SECTION
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