5.—(1) Every operator must take all measures necessary to prevent major accidents and to limit their consequences for human health and the environment.
(2) Every operator must demonstrate to the competent authority that it has taken all measures necessary as specified in these Regulations.
(3) Every operator must provide the competent authority with such assistance as is necessary to enable the competent authority to perform its functions under these Regulations.
(4) Without prejudice to the generality of paragraph (3), every operator must in particular provide such assistance as is necessary to the competent authority to enable it to—
(a)carry out inspections and investigations; and
(b)gather any necessary information,
in connection with the performance of its functions under these Regulations.