Planned Compliance Inspection at Hartlepool Power Station
- Site: Hartlepool
- IR number: 15-174
- Date: March 2016
- LC numbers: 11, 24, 27, 28, 36
Purpose of intervention
The purpose of this intervention was to undertake compliance inspection activities at EDF Energy Nuclear Generation Limited’s (NGL’s) Hartlepool power station in line with the ONR’s planned inspection programme contained in the Hartlepool Integrated Intervention Strategy (IIS) for 2015/16.
Interventions Carried Out by ONR
We undertook an intervention to evaluate implementation of the licensee’s arrangements for maintenance and ageing management of systems structures and components providing a nuclear safety function. The invention assessed compliance against three associated licenced conditions:
- LC24 (Operating instructions)
- LC27 (Safety mechanisms, devices and circuits)
- LC28 (Examination, inspection, maintenance and testing)
The site inspector also undertook a planned intervention to evaluate compliance with licence condition 36 (Organisational Capability) and licence condition 11 (Emergency Arrangements). The site inspector also met members of NGL staff to review the progress of other regulatory matters on the site.
The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
- LC 24 (Operating Instructions) – We examined a sample of written instructions associated with maintenance activities that may affect safety and were satisfied that these instructions were sufficient to ensure consistent delivery by competent staff. We judge that an IIS rating of 3 (adequate) is appropriate against licence condition 24 (operating instructions).
- LC27 (Safety mechanisms, devices and circuits) - We reviewed the licensee’s systems to manage availability of safety mechanisms, devices and circuits. We were satisfied that availability of these systems is adequately controlled by duly authorised persons. On the basis of a sample inspection, we are content that these devices are subject to a proportionate maintenance regime to ensure they remain in good working order. It is our judgement that an IIS rating of 3 (adequate) is appropriate.
- LC28 (Examination, inspection, maintenance and testing) - We reviewed the licensee’s process for periodic review of preventative maintenance regimes for systems providing a nuclear safety function. The application of this process was evaluated on the basis of a sample inspection of the ‘CO2 Storage and Distribution Plant’ and ‘Low Pressure Back-up Cooling System’. We are satisfied that overall, the examination, inspection, maintenance and testing regime for sampled mechanical and control & instrumentation components is proportionate to claims made within the nuclear safety case. A potential weakness was identified concerning the specification, on the plant maintenance schedule, of regular inspection of pipework for the CO2 Storage and Distribution Plant and Low Pressure Back-up Cooling System. ONR has written to the station seeking necessary improvements. We judge that an IIS rating of 4 (below standard) against licence condition 28 (examination, inspection, maintenance and testing) is appropriate.
- LC36 (Organisational Capability) – I reviewed the Station’s baseline statement and arrangements for management of organisational change. Overall, I was satisfied that the Station’s nuclear baseline was consistent with the principles identified in ONR’s guidance, warranting an IIS rating of 3 (adequate).
- LC11 (Emergency Arrangements – I observed the use of a new technology within the Station’s emergency control centre. Staff were familiar with the devices and demonstrated their application to support command and control. An IIS rating of 3 (adequate) is appropriate.
Explanation of Judgement if Safety System Not Judged to be Adequate
Not applicable – no system based inspections were performed during this intervention.
Conclusion of Intervention
There are no findings from this inspection that could significantly undermine nuclear safety.
ONR has written to the Station Director to seek a programme to address findings in relation to inspection of pipework for the CO2 Storage and Distribution Plant and Low Pressure Back-up Cooling Systems. An entry on the ONR Issues Database has been raised to monitor this finding to completion.