reg 15 Essential requirements for project subsystems
(1) For the purposes of these Regulations, the essential requirements for a project subsystem are deemed to be met if the project subsystem conforms with — (a) all applicable NTSNs ; (b) where paragraph (2) applies, the requirements of all applicable NTRs , subject to any dispensation granted under regulation 46(1); and (c) where such a dispensation applies, any conditions of that dispensation. (1A) For the purposes of paragraph (1)(a), a project subsystem is deemed to conform with an applicable NTSN, save for any UK specific case set out in that NTSN, if— (a) the person applying for an authorisation provides evidence that the project subsystem has been assessed under EU law as conforming with a TSI in force at the time when the application for authorisation is made; and (b) the applicable NTSN specifies that it substantially reproduces the provisions of that TSI, in accordance with regulation 3B(7). (2) This paragraph applies to a project subsystem where— (a) there are no applicable NTSNs ; (b) a relevant NTSN does not govern all elements of the project subsystem; (c) an exemption from conformity with the whole or part of a relevant NTSN has been granted in accordance with regulations 14 and 14A in relation to that subsystem; or (d) the Competent Authority has determined under regulation 13 that the whole or part of an NTSN does not apply to that subsystem.