Office for Nuclear Regulation

UUK Capenhurst Works - System based compliance inspection and fire enforcement follow up

Executive summary

Purpose of Intervention

This inspection on the Capenhurst Works licensed nuclear site was undertaken as part of a programme of planned interventions, as outlined in the inspection plan for 2019/20.

The scope of the inspection was to confirm that the selected safety system fulfilled its safety function and adequately implemented the requirements of the safety case.  The inspection also included a follow-up with respect to the Fire Alarm and Detection System (FADS) enforcement notice and the quarterly L4 Events Issues and Projects Meetings.

Interventions Carried Out by ONR

During this inspection, I carried out a System Based Inspection (SBI) within a number of selected facilities targeting either the CIDAS or FADS systems  to confirm adequate implementation of arrangements made under the following licence conditions: -

The inspection comprised of plant inspection, office-based examination of procedures, documentation and records and interviews with staff.

Key Findings, Inspector's Opinions and Reasons for Judgements Made

During this inspection, I reviewed the relevant aspects of the licensee’s safety cases and considered that they accurately represented the facility/systems and identified the associated hazards and risks. In addition, I reviewed the leadership and safety culture within the facilities, instructions to persons on site and warning notices, which I judged to be of a good standard.

I reviewed the training records for a sample of operational staff. I found that all persons reviewed had current training records against all of the operating and maintenance instructions examined during this inspection. I reviewed the relevant operating and maintenance instructions and found them to be clear and concise and identified references to the safety related equipment.

I judged that the licensee is undertaking suitable examination, inspection, maintenance and testing activities.  All the maintenance records examined were within date, legible and signed by suitably qualified and trained personnel. The licensee also demonstrated that the plant was not operated, unless suitable and sufficient safety mechanisms, devices and circuits are properly connected and in good working order.

I was provided with a detailed status report as to the current position relating to the assessment of the condition of the fire alarm and detection system (FADS), in addition to the programme of works being conducted, across all systems on site, with regard to obsolescence.

Conclusion of Intervention

Based on the evidence gathered during this inspection, I conclude that the requirements of the safety case for the CIDAS system have been adequately implemented, and there were no matters identified that may adversely affect nuclear safety. 

The ONR Fire inspector concluded that UUK were making adequate progress in developing a detailed FADS recovery plan, in advance of the close out date of the enforcement notice relating to the Fire Alarm and Detection System.