Office for Nuclear Regulation

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Torness Power Station - Licence Condition Compliance Inspection covering LC10, 32, 34 and 36

Executive summary

Purpose of intervention

The purpose of this intervention was to conduct Licence Condition compliance inspections at EDF Energy Nuclear Generation Limited’s Torness power station in line with the planned inspection programme contained in the Torness Integrated Intervention Strategy (IIS) for 2014/15.

Interventions Carried Out by ONR

This intervention included compliance inspections against the following Licence Conditions (LCs):

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system inspection was undertaken, hence this is not applicable.

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

The processes and procedures used at Torness for the training of personnel with responsibility for operations that may affect safety were inspected. A sample inspection was made of these arrangements and concluded that they were adequate to identify personnel training requirements in relation to key nuclear safety roles and responsibilities in the context of LC10. The training record system was found to form an adequate means to control the validity of the training, including refresher and emerging training requirements for relevant personnel. A shortfall was found in the process for nomination of personnel in non-operational safety roles identified during a previous inspection and followed up during this inspection. It was agreed that the licensee would benchmark and review their current arrangements to establish a more robust process to manage personnel changes in this area.

We were satisfied that implementation of the arrangements for compliance with LC10 at Torness are to an adequate standard and judge that the outcome of the sample inspection undertaken satisfied relevant expectations in ONR guidance.

The LC32 inspection examined the arrangements at Torness to minimise, so far as is reasonably practicable, the rate of production and quantity of radioactive waste on the site. The implementation of these arrangements was reviewed through inspection of the Active Solid Waste Building, which found that only minimal quantities of solid radioactive waste had accumulated within the facility and that the majority of this waste was subject to sorting and conditioning activities prior to disposal via an approved disposal route. This was recognised as a major improvement over the position highlighted from previous inspections and, whilst observations were made for potential improvements, it was concluded that this inspection demonstrated a good level of compliance with LC32.

We were satisfied that implementation of the arrangements for compliance with LC32 at Torness are to a good standard and judge that the outcome of the sample inspection undertaken satisfied relevant expectations in ONR guidance.

The processes and procedures used at Torness to control and/or contain leakage and escape of radioactive material in accordance with LC34 were reviewed and their implementation was sampled through inspection of the Active Effluent Treatment Plant. This inspection found that the arrangements were adequate to ensure that potential for leakage was effectively minimised and the systems and equipment used to detect leakage within those parts of the plant for the containment of radioactive waste were subject to appropriate forms of maintenance, inspection and testing. Furthermore evidence was provided that improvements in this area are currently on-going.

We were satisfied that implementation of the arrangements for compliance with LC34 at Torness are to an adequate standard and judge that the outcome of the sample inspection undertaken satisfied relevant expectations in ONR guidance.

The LC36 inspection focused on the arrangements in place for the management of organisational capability at Torness in order to establish that adequate personnel are available to ensure safe operation. This inspection identified a number of elements of good practice in terms of departmental ownership of nuclear baseline requirements, vulnerability analyses, succession planning and tackling both short and long term challenges that may impact the resource baseline. The inspection found that the arrangements in place to support the nuclear baseline for organisational capability were to a good standard and provided a robust demonstration of compliance with the requirements of LC36.

We were satisfied that implementation of the arrangements for compliance with LC36 at Torness are to a good standard and judge that the outcome of the sample inspection undertaken satisfied relevant expectations in ONR guidance.

During this intervention we attended an Outage Intentions Meeting to discuss the forthcoming Reactor 2 periodic shutdown that is scheduled to begin in July 2015. Matters discussed included establishment of a protocol for regulatory interactions during the periodic shutdown and the scope of the work to be carried out. It also provided the opportunity to reiterate regulatory expectations for emerging issues that may need to be resolved before the Reactor 2 periodic shutdown commences.

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

We are satisfied that the arrangements and their implementation at Torness for LC32 and LC36, respectively, are to a good standard, and LC10 and LC34, respectively, are adequate and judge that the outcome of the sample inspections undertaken met expectations detailed within relevant ONR guidance.  We have therefore rated the respective LC32 and LC367 elements of this intervention with an IIS rating of 2, good, and the LC10 and LC34 elements with an IIS rating of 3, adequate.

There are no findings from this inspection that could significantly undermine nuclear safety and no changes to the planned interventions and inspections of Torness.