Inspection of Magnox Ltd's Sizewell A and Dungeness A nuclear licensed sites
- Site: Dungeness A & Sizewell A
- IR number: 16-063
- Date: June 2016
- LC numbers: 11 (Sizewell A only), 13
Purpose of intervention
This report covers an inspection of Magnox Ltd's Sizewell A nuclear licensed site on 28-30 June 2016 and an inspection of the Dungeness A Nuclear Safety Committee on 28 June 2016 This inspection was undertaken as part of a programme of planned interventions as outlined in the Sizewell A and Dungeness A IIS plans for 2016/17.
Interventions Carried Out by ONR
During this intervention, I carried out compliance inspections against the Ionisation Regulation Regulations (IRR99) and Licence Condition 13 - Nuclear Safety Committees for both Sizewell A and Dungeness A. I also observed the Sizewell A Level 1 emergency demonstration and assessed this against Licence Condition 11 requirements. My inspection was carried out against the requirements of ONR's published inspection guidance associated with these Licence Conditions.
I also attended a meeting to discuss the changes to Lifetime Plans for the South East region sites.
Explanation of Judgement if Safety System Not Judged to be Adequate
This intervention did not include an inspection of a safety system.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
- Ionising Radiation Regulations (IRR99) - The purpose of the intervention was to undertake an inspection of the license arrangements and implementation under Ionising Radiation Regulations. Application of arrangements for controlling radiation exposure was inspected by visiting the reactor pile cap, ponds, effluent treatment plant and the new Low Level Waste (LLW) building. The opportunity was also undertaken to discuss radiation protection arrangements on a number of forthcoming projects at the site including the ponds, waste retrievals and conditioning. Overall Compliance with the IRR99 was judged to be of an adequate standard with some opportunities for further minor improvements identified, which Sizewell A agreed to consider. Overall I consider an inspection rating of green to be appropriate.
- Licence Condition 13 - The purpose of the intervention was to undertake an inspection of the licensees arrangements and their implementation under LC 13 - Nuclear Safety Committees. LC13 requires the licensee to establish Nuclear Safety committees for consideration and advice on nuclear safety matters. I reviewed the licensees arrangements, the committee terms of reference, and appointed membership. I also reviewed records of committees held. The licensee demonstrated compliance with ONR guidance. Overall, I consider an inspection rating of green to be appropriate.
- Licence Condition 11 - The licensee undertook a Level 1 emergency exercise to demonstrate its emergency arrangements. I considered that the planning for the exercise was thorough, and that the scenario was relevant and proportionate to the hazards remaining on the site and SZA's response was in most respects adequate. However I considered that the licensee failed to demonstrate the adequacy of its emergency response for contamination control and casualty handling. I have rated this condition amber, and the licensee agreed to carry out a partial re-demonstration to show that it has addressed the shortfall.
The intervention was performed in line with ONR's guidance requirements (as described in our technical inspection guides) in the areas inspected.
Conclusion of Intervention
From the evidence gathered during this intervention, I concluded that there are no matters of nuclear safety concern. Compliance with Ionising Radiation Regulations and Licence Condition 13 were both judged to be green. The Level 1 emergency exercise was not a successful demonstration of the site's arrangements for contamination control and casualty handling. I have therefore rated this condition amber, and the licensee agreed to carry out a partial re-demonstration to prove any shortfalls have been addressed.