5.—(1) In this Order, the “operator” of an installation is the person who has control over its operation.
(2) But where—
(a)a regulated activity has not begun to be carried out at an installation, the operator of the installation is the person who will have control over its operation when a regulated activity is carried out at the installation;
(b)a regulated activity is no longer carried out at an installation, the operator of the installation is the person who holds the permit for the installation or, if no permit authorises a regulated activity to be carried out at the installation, the person who had control over its operation immediately before regulated activities ceased to be carried out at the installation;
(c)the holder of a permit for an installation ceases to have control over its operation, the operator of the installation is the permit holder.