Hinkley Point A - Fire Protection System Based Inspection, Project Progress and Safety Representative meetings
- Site: Hinkley Point A
- IR number: 14-192
- Date: January 2015
- LC numbers: 7, 10, 23, 24, 27, 28, 34, 35
Purpose of intervention
This report describes an ONR intervention conducted at Magnox Ltd’s Hinkley Point A nuclear licensed site, undertaken as part of a series of routine interventions set out in the Integrated Intervention Strategy document.
Interventions Carried Out by ONR
The main intervention was a planned fire protection system based inspection.
In addition the following interventions were conducted:
- Meeting with site Safety Representatives
- Progress with actions, investigations and decommissioning projects
Explanation of Judgement if Safety System Not Judged to be Adequate
The fire protection system being claimed in the Hinkley Point A safety case was judged to adequately fulfil the requirements of the safety case. Whilst carrying out the inspection, compliance with the following licence conditions (LC) were also examined:
- For LC10 (training): we reviewed the training and what is required by the licensee, for an individual to be regarded a suitably qualified and experienced person (SQEP), to carry out inspection, maintenance, and testing on the fire detection claimed in the resin and sludge retrieval safety case. Overall, from the evidence presented, we concluded that adequate arrangements were in place and implemented in accordance with the requirements of the safety case, ensuring that individuals responsible for carrying out inspection, maintenance and testing of the system are SQEP. We therefore judged that for LC10 the IIS rating is 3.
- For LC23 (operating rules): we examined the safety case for the resin and sludge retrieval project and the safety measures associated with this project. The wording used for one of the safety measures regarding combustible inventory is not clear. The licensee was told to look into this issue and clarify the wording. Based on the nature of the fault and the scenario used for the associated dose, we concluded therefore that satisfactory arrangements were in place and implemented. We judged that for LC23 the IIS rating is 3.
- For LC24 (operating instructions): we reviewed an administrative safety measure related to housekeeping associated with the ponds building. . Due to the work being carried out in this area, there was a considerable amount of combustible material present. Station committed to rectifying this situation and overall we were satisfied that adequate arrangements were in place and implemented. We judged that for LC24 the IIS Rating is 3.
- For LC27 (safety mechanisms, devices and circuits): we were satisfied that the fire system being claimed in the safety case is being appropriately controlled as a safety mechanism. We therefore judged that for LC27 the IIS rating is 3.
- For LC28 (examination, inspection, maintenance and testing): We were satisfied that adequate arrangements were in place and that appropriate maintenance is carried out at the correct periodicity in accordance with the requirements of the safety case. We therefore judged that for LC28 the IIS rating is 3.
- LC34 (leakage and escape of radioactive material and radioactive waste) was not an applicable licence condition for this system based inspection and was therefore not rated.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
There were no key findings from the intervention.
Conclusion of Intervention
No significant actions were generated.