CSA 6.32-2012:2016 pdf download.Press-connect metallic fittings for use in fuel gas distribution systems
A system of tube/pipe and fttings shall be assembled by joining the components according to the manufacturer's installation instructions. This test assembly shall consist of two of each representative size and type of ftting and not less than six inches (152 mm) of tube/pipe. The outlet(s) of the test assembly shall be sealed and the inlet shall be connected to a pneumatic system capable of supplying clean, dry air or nitrogen at a test pressure of 1 .5 times the specified pressure rating, and to a flow measuring device capable of accurately indicating the allowable leakage rate. The flow measuring device shall be located between the air supply and the inlet of the tubing/piping system. Air or nitrogen shall be admitted to the test assembly and maintained at 1.5 times the rated pressure for 1 minute, after which the leakage rate shall be measured. The observed leakage rate, corrected to standard conditions of 30 inches mercury column pressure and 60°F (15.5°C), shall not exceed 20 cm3/hr.
Method of Test
A test assembly consisting of lengths of tube/pipe and one of each type of fitting shall be assembled in accordance with the manufacturer's installation instructions.
One end of the test assembly shall be securely attached to a fixed pipe to which a pneumatic system capable of supplying clean, dry air or nitrogen and a flow measuring device capable of accurately indicating the allowable leakage rate is connected. The other end shall be securely attached in a similar manner to a closed pipe connected to a mechanical means capable of applying a constant turning force as specified in Table 1, Torque. The required turning force shall be applied to the assembly and maintained for the duration of the test. At the end of 5 minutes, the assembly shall not leak in excess of 20 cm3/hr when tested in accordance with 5.2.1.
Method of Test
A test assembly consisting of each type of fitting and sections of tube/pipe shall be assembled in accordance with the manufacturer's installation instructions. A V-block steel holder shall be used to support the assembly for impacting. The sides of the "V" shall be of sufficient length to support the tube/pipe below the top edges of the "V." The V-block and the fittings to be impacted shall be supported on a hard flat surface.CSA 6.32-2012 pdf download.