Office for Nuclear Regulation

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Compliance inspections at AWE Burghfield

Executive summary

Purpose of intervention

The purpose of this intervention was to consider licence compliance in terms of LC 19 Construction or installation of new plant, LC20 Modification to design of plant under construction, LC 14 Safety Documentation, LC 10 Training, and LC 12 Duly authorised and other suitably qualified and experienced persons on the Mensa Project at AWE B site. These interventions are part of an agreed series of interventions covered under the ONR intervention strategy 2015/16.  Licence Conditions 19 and 20 were carried out within the same intervention meeting and will be discussed within this report. The intervention rating for these two Licence Conditions is recorded within this report.

The LC 14 intervention was a planned ‘unannounced’ intervention, full details of which can be found in report ONR-DEF-IR-15-081, which includes the IIS rating for this intervention.

Licence Conditions 10 and 12 were carried out within the same intervention meeting and will be briefly discussed within this report. Full details can be found in report ONR-DEF-IR-15-081, which includes the IIS rating for this intervention.

Interventions Carried Out by ONR

The following Interventions were carried out at the Mensa Project:

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A

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

Licence Condition 19 Construction or installation of new plant was considered at the AWE Mensa project. The project team were considered to be open in their discussions with the inspectors. Some observations were made relating to the site walk around. Overall, the inspectors agreed that a ‘good standard’ intervention rating was appropriate.

Licence Condition 20 Modification to design of plant under construction was considered at the AWE Mensa project. The project team were considered to be positive in their interaction with the inspectors. Overall the inspectors agreed that the systems and procedures were working well and that a ‘good standard’ intervention rating was appropriate.

Report ONR-DEF-IR-15-081 provides details of ONR interventions on Mensa against LCs 14, 10 and 12.  

Conclusion of Intervention

In relation to the Mensa LC19/LC20 compliance inspection, we established that the project is moving into another work phase with increased contractors and personnel on site. The project is well aware of the challenges ahead relating to supply chain issues and various trades working on site. As such effort is being expended up front to ensure a robust training and education regime for new operatives starting on site.