Office for Nuclear Regulation

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LC11 Level 1 Demonstration Exercise "Glasgow" and Licence Condition Compliance Inspection covering LC28 and LC36

Executive summary

Purpose of intervention

The purpose of this intervention was to undertake Licence Condition (LC) compliance inspections at EDF Energy Nuclear Generation Limited's (NGL's) Torness Power Station in line with the planned inspection programme contained in the Torness Integrated Intervention Strategy (IIS).

Those aspects of this intervention that involved the observation of the annual Level 1 demonstration exercise of the on-site emergency response arrangements at the Torness nuclear licensed site intervention were undertaken by five ONR inspectors. The purpose was to seek assurance that the Licensee's emergency arrangements and its emergency response personnel have the capability to deal effectively with emergencies with on-site or off-site consequences.

The ONR nominated site inspector performed the LC28 and LC36 compliance inspections.

Interventions carried out by ONR

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

The inspection used ONR guidance documents, NS-INSP-GD-011 Rev. 2, NS-INSP-GD-028 Rev. 3 and NS-TAST-GD-048 Rev. 4, which require inspectors undertaking compliance inspections against LC11, LC28 and 36, respectively, to consider both the arrangements that are in place together with their associated implementation.

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

During the course of the Level 1 demonstration exercise a number of opportunities for improvement were identified. ONR has written to NGL requesting confirmation of the action proposed, or already taken, to address the points raised by ONR, together with those of their own staff and independent assessment team. The Torness Nominated Site Inspector is to be advised of future shift exercises intended to test the implementation of the opportunities for improvement identified by those involved in the exercise.

ONR welcomed the fact that the joint debrief meeting provided a comprehensive exchange of information on the outcome from the exercise, which made a valuable contribution to the identification of potential improvement opportunities in respect of the emergency arrangements at Torness Power Station.

The LC28 inspection considered the adequacy of the arrangements at Torness for provision for regular and systematic examination, inspection, maintenance and testing of plant items and equipment that may affect safety through use of a maintenance, inspection and testing schedule (MITS).

I found that the arrangements for compliance with LC28 reviewed during my inspection provided an effective demonstration of the maintenance regime at Torness Power Station for plant items and equipment with safety significance that are subject of MITS. The use of examples from a recently introduced safety system provided a helpful means of establishing compliance in terms of the implementation of relevant Torness Power Station and corporate level specifications and procedures.

I am satisfied that implementation of arrangements for compliance with LC28 at Torness Power Station are to an adequate standard and judge that the outcome of the sample inspection undertaken met with relevant expectations in ONR guidance.

The LC36 inspection focussed on the implementation of arrangements at Torness Power Station to ensure the adequacy of human resources and the measures applied through a nuclear baseline to establish and maintain effective organisational capability.

Based on the sampling undertaken, I found that the implementation of the LC36 arrangements at Torness Power Station was effective. The station appears to have fully implemented the arrangements described in both station and corporate level specifications and procedures. The station is taking forward its nuclear baseline statement to improve resilience in nuclear safety related roles and has linked the output from this to initiatives such as workforce planning and plant lifetime extension programmes.

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

The licence conditions were inspected against ONR's published guidance requirements (as described in our technical inspection guides).

Conclusion of intervention

The ONR team deemed that exercise "Glasgow" provided an adequate demonstration of the station emergency arrangements for the current year and the staff responded adequately to a challenging scenario. This inspection has been given an Integrated Intervention Strategy (IIS) rating of 3 (adequate).

I am satisfied that the arrangements and their implementation at Torness Power Station for LC28 are to an adequate standard and judge that the outcome of the sample inspection undertaken met with relevant expectations detailed within ONR guidance. I have rated this element of my licence condition compliance inspection with an IIS rating of 3 (adequate).

I am satisfied that the arrangements and their implementation at Torness Power Station for LC36 are to a good standard and judge that the outcome of the sample inspection undertaken met with the relevant expectations detailed within ONR guidance. I have rated this element of my licence condition compliance inspection with an IIS rating of 2 (good).

There are no findings from this inspection that could significantly undermine nuclear safety and no change to the planned interventions and inspections at Torness Power Station.