Sch 10 para 54
When the competence management process is applied to the maintenance delivery function, at least the following activities affecting safety must be taken into account— (a) joining techniques, including welding and bonding; (b) non-destructive testing; (c) final vehicle testing and release to service; (d) maintenance activities on brake systems, wheel sets and draw gear and maintenance activities on specific components of freight wagons for the transport of dangerous goods, such as tanks, valves, etc.; (e) other identified specialist areas affecting safety.