Dangerous Goods by Road
every portable tank with a capacity less than 1 900 litres shall be fitted with a pressure-relief device
which may be a frangible disc when this disc complies with the requirements of 6.7.2.11.1. when no
spring-loaded pressure-relief device is used, the frangible disc shall be set to rupture at a nominal
pressure equal to the test pressure. in addition, fusible elements conforming to 6.7.2.10.1 may also be
used.