Common use of Natural gas cycling test Clause in Contracts

Natural gas cycling test. One finished cylinder shall be pressure cycled using compressed natural gas from less than 2 MPa to working pressure for 300 cycles. Each cycle, consisting of the filling and venting of the cylinder, shall not exceed 1 hour. The cylinder shall be leak tested in accordance with paragraph A.10 above and meet the requirements therein. Following the completion of the natural gas cycling the cylinder shall be sectioned and the liner/end boss interface inspected for evidence of any deterioration, such as fatigue cracking or electrostatic discharge. NOTE - Special consideration must be given to safety when conducting this test. Prior to conducting this test, cylinders of this design must have successfully passed the test requirements of paragraph A.12 above (hydrostatic pressure burst test), paragraph 8.6.3. of Annex 3 (ambient temperature pressure cycling test) and paragraph A.21 above (permeation test). Prior to conducting this test, the specific cylinders to be tested must pass the test requirements of paragraph A.10 above (leak test).