Common use of Accelerated life test Clause in Contracts

Accelerated life test. Eight TPRD units undergo testing; three at the manufacturer's specified activation temperature, Tact, and five at an accelerated life temperature, Tlife = 9.1 x Tact0.503. The TPRD is placed in an oven or liquid bath with the temperature held constant (±1 °C). The hydrogen gas pressure on the TPRD inlet is 125 per cent NWP (±1 MPa). The pressure supply may be located outside the controlled temperature oven or bath. Each device is pressured individually or through a manifold system. If a manifold system is used, each pressure connection includes a check valve to prevent pressure depletion of the system when one specimen fails. The three TPRDs tested at Tact shall activate in less than ten hours. The five TPRDs tested at Tlife shall not activate in less than 500 hours.

Accelerated life test. Eight TPRD units undergo testing; three at the manufacturer's ’s specified activation temperature, temperature (Tact, ) and five at an accelerated life temperature, temperature (Tlife). Tlife = 9.1 x Tact0.503Tact 0.503. The TPRD is placed in an oven or liquid bath with the temperature held constant (±1 °C). The hydrogen gas pressure on the TPRD inlet is 125 per cent 125% of NWP (±1 MPa). The pressure supply may be located outside the controlled temperature oven or bath. Each device is pressured pressurized individually or through a manifold system. If a manifold system is used, each pressure connection includes a check valve to prevent pressure depletion of the system when one specimen fails. The three TPRDs tested at Tact shall activate in less than ten hours. The five TPRDs tested at Tlife shall not activate in less than 500 hours.