Office for Nuclear Regulation

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AWE Aldermaston - Compliance inspection

Executive summary

Purpose of Intervention

This intervention, conducted at the Atomic Weapons Establishment (AWE) Aldermaston licensed site, was undertaken as part of the 2018/19 intervention plan and weapons sub-division strategy.

Interventions Carried Out by ONR

I attended a routine briefing meeting with key licensee (i.e. AWE plc) personnel, to discuss the licensee’s progress with a safety related project.

Additionally, supported by the ONR Site Inspector, I conducted a planned Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) compliance inspection in the AWE Aldermaston Main Production Facility.

The intervention was performed in line with ONR's guidance requirements (as described in our technical inspection guides) in the areas inspected.

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A

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

In the case of the safety related project meeting I conducted with licensee personnel, no matters were identified as requiring additional regulatory attention.

There were no significant findings identified during the DSEAR inspection of the Main Production Facility.  I determined that the licensee, by removing a flammable substance in large quantities from within the facility, has significantly reduced the impact of hazardous chemicals.  I have identified a number of observations with the implementation of DSEAR that requires further regulatory oversight.  It is my opinion however, that these can be resolved during normal regulatory business.

For these reasons, and on balance, I consider an inspection rating of Green (no formal action) is merited against DSEAR as a result of this inspection.

Conclusion of Intervention

In the case of the safety related project meeting I conducted with licensee personnel, no matters were identified as requiring additional regulatory attention.

With regards to the DSEAR inspection my findings were shared with and accepted by the licensee as part of normal inspection feedback.