18Meaning of gas distribution system regulatory duty

18 Meaning of gas distribution system regulatory duty A gas distribution system regulatory duty is a duty under a relevant gas distribution system law or instrument that the ESC had in relation to a gas distribution company immediately before the day on which a revised gas distribution access arrangement that relates to pipeline services provided by that gas distribution company is deemed to be an AER approved full access arrangement other than a duty— (a) to (or refuse to) grant, vary, revoke, or approve the transfer of, a distribution licence held by that gas distribution company; or (b) to make or amend a code or guideline that relates to the provision of distribution pipeline services provided by that gas distribution company. In relation to when a revised gas distribution access arrangement is deemed to be an AER approved full access arrangement, see section 25.