Sizewell B - Planned Intervention
- Site: Sizewell B
- IR number: 17-064
- Date: July 2017
- LC numbers: 11
Purpose of Intervention
The purpose of this intervention was to undertake Licence Condition (LC) compliance inspections at EDF Energy Nuclear Generation Ltd’s (NGL’s) Sizewell B power station, in line with the planned inspection programme of the Operating Facilities Operating Reactors sub-programme intervention plan for 2017/18.
Interventions Carried Out by ONR
During this intervention, I undertook an unannounced inspection against elements of the station’s onsite emergency arrangements, during which I measured compliance against the following Licence Condition:
- LC 11 - Emergency Arrangements
Also during this intervention I:
- Undertook a quarterly review of progress against regulatory issues
- Attended the Sizewell stakeholder group meeting on 6th July 2017, held in Saxmundham
- Met with the station’s Independent Nuclear Assurance (INA) evaluators to discuss regulatory matters
- Attended a presentation delivered by the station on the Sizewell B Lifetime Strategy
Explanation of Judgement if Safety System Not Judged to be Adequate
No system inspection was undertaken during this intervention.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
I made the following principal findings in relation to LC 11 (emergency arrangements):
- On balance, the emergency scheme roles meet with the nuclear baseline but a number of roles fall short of specification. INA’s recent surveillance also reports a similar finding. I was satisfied in each role there are suitable plans by which to maintain resilience through the station training programme
- I undertook a walkdown of a number of facilities that support the station’s onsite emergency response and made the following observations:
- General condition within the emergency control centre (ECC) was good and evidently in a state of readiness
- ONR no longer has a desk and telephone within the ECC, but now located in a separate room, without line of sight. This was problematic during Level 1 Demonstration Eagle 17 during which it was not possible, with the current location of the ONR desk, to maintain communications with Bootle’s RCIS and oversee developments in the ECC. A regulatory issue is proposed through which to secure resolution
- I observed a number of below standard conditions in three facilities that support emergency response. None of these shortfalls would likely hinder timeliness of emergency response (to any material extent) on their own. However they do indicate a possible tolerance to degraded standards that warrants the station’s attention. I was satisfied that immediate action was taken by the station to improve the material condition of each facility and will monitor condition in future visits
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
I consider that, based on the evidence acquired during this intervention, an inspection rating of Green is appropriate for LC 11 (emergency arrangements).