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Primary Piping System Installation The normal recommended procedure is to conduct Avoid personal contact with the piping system while a hydrostatic cyclic pressure test. The piping system is it is pressurized during testing except for actual checking subjected to 10 pressurization cycles at 11/2 times the of the joints for leaks. Absolutely no one should be in anticipated or design operating pressure. NOTE: For low the trench while the pipe is being initially pressurized for pressure applications, it is best to use the pressure rating leak testing. Notify all site personnel before beginning of the pipe as the design operating pressure, i.e. test at the testing procedure. 11/2 times the cyclic rating. The test pressure should not exceed 1 1/2 times the maximum rated operating pressure Do not straddle the pipe during testing or while checking for the lowest rated element in the system. Pressure the piping system for possible leaks. is then kept on the system for 1-8 hours while the line is inspected for leaks. While the pipe is being checked for leaks,do not stand at the end of the piping system or where it changes Air Test Procedures and Safety Precautions(') directions. TESTING WITH AIR OR GAS IS EXTREMELY DANGEROUS AND SHOULD NOT BE DONE. CONSULT CAUTION: Failure to strictly follow these instructions YOUR FGS REPRESENTATIVE OR CALL 501-618-2243 can result in serious personal injury, death, and/or FOR TECHNICAL ASSISTANCE. IF YOU CONTEMPLATE property damage. EXCEEDING THE RECOMMENDED PRESSURES FOR THE LOWEST RATED ELEMENT OF THE SYSTEM OR IF • FGS recommends that after the piping has passed the YOU CONTEMPLATE USING AIR OR GAS IN SPITE OF 50 psig(0.345 MPa)pressure test,the contractor should THE WARNING, REVIEW ALL SAFETY PRECAUTIONS reduce the product line pressure to a pressure of not BEFORE STARTING THE TEST. more than 25 psig(0.172 MPa)and maintain this pressure until all paving has been completed. Leave pressure If testing with air or gas is required or requested to be gauge on each line for inspection. The contractor should performed,the following testing procedures and precautions check the gauge daily to verify the pipe is holding must be followed. As in any system where pressure is pressure. employed, adequate safety precautions must be exercised. EXERCISE DUE CARE IN INSTALLING AND TESTING If a leak is encountered during the test procedure, THE PIPING SYSTEM. immediately release all pressure in the piping system and refer to pages 14-15 for proper repair procedures. Upon • Visually inspect all bonded joints for proper insertion completing any necessary repairs to the piping system, and adhesive cure prior to pressurizing the piping follow the proper testing sequence and verity the system's system.A gap between the adhesive bead and the fitting integrity. shoulder indicates that the possibility of joint failure exists. Make any necessary repairs before pressurizing Vacuum or Inert Gas Test Procedures the piping system. See page 12 for potential causes of Testing with vacuum and/or pressurized inert gases have joint failure. been successfully used with FGS Smith Fibercast piping systems. Although helium testing in a closed atmosphere • Check the integrity of the joints by pressurizing the and at measured levels is useful, testing in the field with system to 25 psig(0.172 MPa)and holding the pressure helium has shown inconsistencies when attempting to for a minimum of one minute. Soap all joints to test for identify leak location. leaks. 0)Do not use these testing procedures and safety precautions for FGS • If there are no leaks, raise the line pressure in the Smith Fibercast RED THREAD IIA secondary containment piping systems. See page 23 of this manual for testing procedures for secondary contain- system to a maximum of 50 psig (0.345 MPa). Again, ment piping systems. hold the pressure for at least one minute and soap all joints to check for leaks. • As serious personal injury or death can result, the pipe inspector should take precautions for his/her personal safety and protection against flying debris and also against the whipping action of the pipe that can result from the sudden release of stored energy. Goggles should be worn to protect against flying debris. 13