s 8 Duty to conserve Fund
It shall be the duty of the Authority to conserve the Fund by so exercising and performing its functions and duties under this Act as to secure that the total revenues of the Authority are, subject to any directions given by the Minister under section 4, and taking one year with another, sufficient to meet all sums properly chargeable thereto including provisions in respect ofβ (a) its obligations under subsection 7(2) and section 9; and (b) depreciation and interest on capital: Provided that the Minister may, with the concurrence of the Treasury direct that such expenditure or class or description of expenditure as may be specified in such direction shall be treated as irrecoverable.