Article 7 4

(a)

any significant increase or decrease in the quantity or significant change in the nature or physical form of the dangerous substance present, as indicated in the notification provided by the operator pursuant to paragraph 1, or a significant change in the processes employing it;

(b)

modification of an establishment or an installation which could have significant consequences in terms of major-accident hazards;

(c)

the permanent closure of the establishment or its de-commissioning; or

(d)

changes in the information referred to in points (a), (b) or (c) of paragraph 1.