This inspection was one of a series of planned inspections for 2019/20, which are informed by the ONR Decommissioning Fuel and Waste (DFW) sub-division strategy. The inspections focused on aspects of the Site’s transition from defueling to care and maintenance (C&M) preparations.
This inspection examined the adequacy of Magnox Limited’s (ML) arrangements and their implementation on the Wylfa site for compliance with Licence Conditions (LC): LC7 (incidents on the site) and LC26 (control and supervision of operations). I also held meetings to discuss Wylfa’s transition programme, examined defueling records and conducted a site walk-down with employee safety representatives.
For LC 7, I focused on the licensee’s arrangements to ensure that incidents are notified, recorded, investigated, reported and learning takes place. For LC26, I focussed on the control and supervision of operations at Wylfa; this was with focus on the Wylfa transition from defueling to C&M preparations. This is currently the subject of a Management of Change (MoC) proposal and is programmed to be completed in November 2019.
The key activity for moving to C&M preparations at Wylfa is the completion of defueling and verification that the site is fuel free. Therefore, I inspected the process for fuel free verification and reviewed supporting documentation.
I met with licensee staff to discuss the site’s transition programme that will result in changed emergency arrangements and a revised organisational structure when all fuel has been removed from the site. I discussed the cultural changes that will be required from the staff in the C&M preparations phase.
Based on the evidence examined it is my judgement that ML is effectively implementing arrangements for complying with LC 7 and 26 at Wylfa. I identified areas of good practice and some areas where ML could improve.
I identified no matters that in my opinion could adversely affect nuclear safety. My findings were shared with and accepted by the licensee.