Mechanical strength. The tank shall be tested under the conditions prescribed in paragraph 6.1. of this Regulation for leaks and for rigidity of shape. The tank and all its accessories shall be mounted onto a test fixture in a manner corresponding to the mode of installation on the vehicle for which the tank is intended or mounted in the vehicle itself or mounted in a test fixture made by a vehicle section. On request of the manufacturer and with the agreement of the Technical Service the tank may be tested without using any test fixture. Water at 326 K (53 °C) shall be used as the testing fluid and shall fill the tank to its capacity. The tank shall be subjected to a relative internal pressure equal to double the working pressure and in any case to not less than 30 kPa at a temperature of 326 K ± 2 K (53 °C ± 2 °C) for a period of five hours. During the test, the tank and its accessories shall not crack or leak; however, it may be permanently deformed.
Mechanical strength. In GB the sub-clauses 24.7 is not adopted. Cl.28 Resistance of Insulating material to abnormal heat, to fire and to tracking In GB the sub-clauses 28.1.2
Mechanical strength. The isolating switches shall be capable for withstanding the rated mechanical terminal loads and electro magnetic forces, without effecting the operation and current carrying properties. The switches, complete with the operating mechanism should not come out of their own in closed position due to the effect of gravity, wind pressure, vibrations and reasonable shocks. Their construction should be such that they do not under any influence of short circuit currents.
Mechanical strength. The card shall resist damage to its surface and to any components contained in it and shall remain intact during normal use, storage and handling.
Mechanical strength. The tank must be tested under the conditions prescribed in paragraph 6.1. of this Regulation for leaks and for rigidity of shape. The tank and all its accessories must be mounted onto a test fixture in a manner corresponding to the mode of installation on the vehicle for which the tank is intended. Water at 326 K (53 °C) must be used as the testing fluid and must fill the tank to its capacity. The tank must be subjected to a relative internal pressure equal to double the working pressure and in any case to not less than 0.3 bar at a temperature of 326 K " 2 K (53 °C " 2 °C) for a period of five hours. During the test, the tank and its accessories must not crack or leak; however, it may be permanently deformed.
