(1)  The Board may, by instrument in writing under its common seal, delegate to a person specified in the instrument the performance or exercise of such of its functions and powers under this Act or any other Act (other than this power of delegation) as are specified in the instrument, and may, by instrument in writing under its common seal, revoke wholly or in part any such delegation.

(2)  A function or power the performance or exercise of which has been delegated under this section may, while the delegation remains unrevoked, be performed or exercised from time to time in accordance with the terms of the delegation.

(3)  A delegation under this section may be made subject to such conditions or limitations as to the performance or exercise of any of the functions or powers delegated, or as to time or circumstance, as are specified in the instrument.

(4)  Notwithstanding any delegation under this section, the Board may continue to perform or exercise all or any of the functions or powers delegated.

(5)  Any act or thing done by, or to, a delegate of the Board while acting in the exercise of a delegation under this section shall have the same force and effect as if the act or thing had been done by, or to, the Board and shall be deemed to have been done by, or to, the Board.

(6)  An instrument purporting to be signed by a delegate of the Board in his capacity as such a delegate shall in all courts and before all persons acting judicially be received in evidence as if it were an instrument executed by the Board under seal and, until the contrary is proved, shall be deemed to be an instrument signed by a delegate of the Board under this section.

(7)  Where the exercise of a power by the Board is dependent on the opinion or belief of the Board, a delegate of the Board under this section may, in exercising that power, act on his own opinion or belief.