Reference: Workplace Safety and Health (Facilities) (Control of Major Accident Hazards) Regulations, 2013

Decommissioning (Regulation 3(1))

The process of taking a facility, well, pipeline or other conveyance system from cessation of production (or operation) of that facility, well, pipeline or other conveyance system to the final declared state of that facility, well, pipeline or other conveyance system, and includes the planning and implementing of any activity required to achieve that final declared state

Material Change(Regulation 3(1))

any change in design or operations that is significant to require a re-submission of the notification or Safety Case, and includes -
(a) physical changes to the plant;
(b) changes to operational parameters;
(c) organisational or staff changes; or
(d) change in risk profile;

Safety Case for Decommissioning and Restoration of Fixed Facility (Regulation 16)

1. The duty holder of a fixed facility that has ceased production (or operation) shall ensure that the activities required to achieve the final declared state are not commenced unless -
i. he has prepared a Safety Case for decommissioning and restoration containing the particulars as specified in Schedule 5;
ii. he has submitted the Safety Case for decommissioning and restoration to the competent authority, at such time that will enable the duty holder to take account of any matter relating to safety, health and the environment raised by the competent authority; and
iii. he has received a Safety Case Certificate for decommissioning and restoration from the competent authority.

2. Where there is a material change in any of the particulars notified pursuant to sub-regulation (1)(a) prior to the competent authority issuing a Safety Case Certificate, the duty holder shall, as soon as practicable, notify the competent authority of that change.

3. Sub-regulation (1)(a) shall only require the particulars in the Safety Case to demonstrate the matters referred to in that sub-regulation to the extent that it is reasonable to expect the duty holder to address them at the time of submitting the Safety Case to the competent authority.

Particulars in Safety Case for Fixed Facility - Schedule 2