3.—(1) The following class of lands and heritages is hereby prescribed for the purposes of section 6(1) of the 1975 Act, namely any lands and heritages in Scotland (other than the lands and heritages mentioned in paragraph (2) below) occupied by the Authority for the purposes of the undertaking carried on by the Authority.
(2) The lands and heritages mentioned in this paragraph are lands and heritages consisting of or comprising–
(a)a dock or harbour used by the Authority exclusively or mainly for the purpose of bringing or receiving goods of any one or more of the following descriptions:–
(i)goods which have been manufactured or produced by the Authority;
(ii)goods which are to be used by the Authority for the manufacture or production of goods or electricity;
(iii)goods which are to be sold by the Authority;
(iv)goods which have been manufactured or produced by an associated body, and are to be sold by that body; or
(b)premises occupied by the Authority which are not situated on operational land of the Authority.