Office for Nuclear Regulation

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Conventional fire safety at Trawsfynydd Nuclear Power Station

Executive summary

Purpose of intervention

I conducted an audit of conventional fire safety at Trawsfynydd Nuclear Power Station to gain evidence of compliance with the Regulatory Reform (Fire Safety) Order 2005. The intervention also aimed to recognise best practice, encourage a pro-active style of safety management and promote continual improvements in fire safety.

Generally the fire safety arrangements were adequate - GREEN

Interventions Carried Out by ONR

This Intervention is part of a programme of inspections forming a key element of the COP strategy to ensure adequate fire safety arrangements are in place, across the nuclear industry. My audit assessed the dutyholder’s compliance with the requirements of Regulatory Reform (Fire Safety) Order 2005, which places duties on the responsible person to ensure life safety from fire.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not Applicable

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

The intervention examined the processes that Trawsfynydd employ to produce and review fire risk assessment documents as the site moves towards a quiescent state where facilities are cold and dark. I reviewed fire risk assessments, discussed proposed fire strategies for the safestore and challenged senior managers’ fire safety arrangements.

I examined arrangements to mitigate fire safety challenges present in current work activity and followed-up on the progress of items discussed during the last fire safety intervention.

I also toured the ILWS and engineering office to assess the effectiveness of the arrangements that support the fire strategy.

I made several observations to improve the existing standards of fire safety, but overall, I identified a wide range of good examples of pro-active fire safety management.

I am of the opinion that the Site displayed an appreciation of the importance of effective preventative and protective measures within the facilities I inspected and senior managers have demonstrated compliance with the relevant legislation

Conclusion of Intervention

From the evidence gathered during this intervention, I do not believe there are any deficiencies that seriously impact on fire safety.  No additional regulatory action is needed over and above the planned interventions as set out in the Integrated Intervention Strategy, which will continue as planned.