Hinkley Point B - SBI16 - Fuel Dismantling Facility
- Site: Hinkley Point B
- IR number: 16-089
- Date: August 2016
- LC numbers: 10, 16, 23, 24, 26, 27, 28, 34
Purpose of intervention
This was a planned inspection of EDF Energy Nuclear Generation Ltd's (NGL's) Hinkley Point B power station, undertaken as part of the planned intervention strategy for the Operating Facilities Programme (OFP) of the Office for Nuclear Regulation (ONR).
The work was carried out in-line with the planned inspection programme contained in the Hinkley Point B Integrated Intervention Strategy (IIS).
Interventions Carried Out by ONR
I (the nominated site inspector for Hinkley Point B) with support from an ONR mechanical engineering inspector:
- Carried out a system based inspection of the Irradiated Fuel Dismantling Facility (IFDF).
- Carried out a licence condition 16 compliance inspection on site plans, designs and specifications.
- Carried out a licence condition 26 compliance inspection on control and supervision of operations.
- Discussed key matters with the site internal regulator.
Explanation of Judgement if Safety System Not Judged to be Adequate
From our inspection, we judged that the IFDF system met the requirements of the safety case and was adequate.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
From the System Based Inspection on the IFDF we concluded that:
- LC 10 (Training) - We examined the role profiles and training records of three personnel involved in maintenance and inspection activities associated with the IFDF. We judged that the personnel undertaking these maintenance and inspection activities were suitably qualified and experienced. We therefore assigned a rating of Green (no formal action) for LC 10 compliance.
- LC 23 (Operating Rules) - The technical specification and surveillance schedules adequately specified the limits and conditions of operation (LCO) reflecting those specified in the living safety case. In addition the fuel route compliance record demonstrated that the operating instructions were utilised as appropriate during IFDF operations. We therefore assigned a rating of Green (no formal action) for LC 23.
- LC 24 (Operating Instructions) - We examined a number of station operating instructions (SOIs), maintenance instructions (MI) and an operations working instruction (OWI). We judged these documents to be of an adequate standard and therefore assigned a rating of Green (no formal action) for LC 24.
- LC 27 (Safety Mechanisms, Devices and Circuits) - The IFDF gamma monitor restricted some IFDF activities and prevented personnel access to the cell whilst irradiated fuel was present. It was considered as a safety related system. We examined and confirmed that the gamma monitor was maintained and tested on a regular basis. We judged that a rating of Green (no formal action) was appropriate for LC 27.
- LC 28 (Examination, Inspection, Maintenance and Testing) - We examined the NGL maintenance arrangements including the arrangements for deferring maintenance activities. We noted that NGL was developing a fleet wide approach to the application of LOLER (Lifting Operations and lifting Equipment Regulations) for fuel route plant but we were satisfied that the equipment was being adequately maintained. We therefore assigned an IIS rating of Green (no formal action) to this inspection.
- LC 34 (Leakage and Escape of Radioactive Material and Radioactive Waste) - NGL described what containments were in place to mitigate the escape of liquid, solid and gaseous waste resulting from IFDF operations. These met our expectations and we assigned a rating of Green (no formal action) to this inspection.
We carried out an inspection of IFDF plant and equipment and considered them to be in good condition and adequately maintained. After considering all of the evidence presented by NGL we concluded that the arrangements and their implementation, associated with the IFDF met the requirements of the safety case and were adequate.
- For LC16 (site plans, designs and specifications) - I was satisfied with the content and accuracy of the site plan and the schedule of station permanent buildings. I was also satisfied that arrangements were in place and were being used to record changes to these documents, and that amended documents were being sent to ONR as required. As a result I assigned an IIS rating of Green (no formal action required) to this inspection.
- For LC26 (control and supervision of operations) - I was satisfied that NGL had developed and implemented adequate arrangements for the control and supervision of portable computing devices on site. I therefore assigned an IIS rating of Green (no formal action) to this inspection.
I met with an INA evaluator on site to discuss a number of issues and promote effective working interactions. On this occasion we discussed the IFDF system based inspection, planned changes to the INA arrangements on site and progress with a number of initiatives on site (eg fuel route improvements and safety rules application).
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
There were no findings from this inspection that could significantly undermine nuclear safety. At present, no additional regulatory action is needed over and above the planned interventions of Hinkley Point B power station as set out in the Integrated Intervention Strategy, which will continue as planned.