(1) Section 13 of the Principal Act is repealed and the following section is substituted:
13 Functions of Authority
"(1) The Authority has the following functions:
(a) to design, for itself or another person, pipelines for the carriage of gas in trade and commerce between a point in a State and a point in another State;
(b) to construct, for itself or another person, pipelines for the carriage of gas in trade or commerce between a point in a State and a point in another State;
(c) to maintain, for itself or another person, pipelines for the carriage of gas in trade or commerce between a point in a State and a point in another State or Territory;
(d) to operate, for itself or another person, pipelines for the carriage of gas in trade or commerce between a point in a State and a point in another State or a Territory;
(e) to give advice to the Minister about its functions under paragraphs (a) to (d).
(2) The Authority may, in accordance with sections 14 and 28, carry on business for the purposes of performing those functions.".
(2) Despite the repeal of section 13 by subsection (1), the Authority may carry on business for the purpose of finalising any business activities that relate to its functions under the Pipeline Authority Act 1973 immediately before the commencement of this section.