Office for Nuclear Regulation

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Sellafield - EPS3 Consent To Operate Readiness Inspection

Executive summary

Purpose of intervention

This inspection was undertaken in support of an application by Sellafield Ltd. (SL) for consent to operate (CTO) the Engineered Product Store 3 (EPS3) following completion of active commissioning.

EPS 3 is required as EPS 1 and 2 are nearly full and it is anticipated that EPS 3 will provide waste storage for the completion of fuel reprocessing and the storage of residues from the remediation of high hazard facilities. It is therefore plays an important part in the Sellafield site remediation strategy.

Interventions carried out by ONR

Interventions carried out by ONR were as follows:

The inspection was conducted against the ONR’s Safety Assessment Principles (SAPs) and Licence Condition guidance for the Licence Conditions LC21 (Commissioning), LC34 (Leakage and Escape of Radioactive Waste), LC10 (Training) and LC24 (Operating Instructions).

Explanation of Judgement if Safety System Not Judged to be Adequate

N/A, this was not a Safety Systems inspection. 

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

The EPS 3 facility provided adequate evidence it had completed its programme of active commissioning and no reason to withhold the issue of a CTO was observed.

Inspection of the records of the active commissioning provided adequate justification that the necessary tests and operations to prove the proper safe operation of the facility had been completed successfully.

Inspection of the arrangements made to handle and store the radioactive waste showed them to be adequate and that the facility is suitable for storing the waste safely.

Sampling of the training records and operating procedures for the facility showed that suitable operating procedures are in place for normal and fault conditions and that the training programme for the operators had been completed.

Inspection of the plant and observation of equipment being operated showed that the facility is functional and has been completed to a high standard.

Conclusion of Intervention

I therefore consider the EPS 3 facility to be ready to commence normal operations. Therefore a Consent to Operate the facility should be prepared and, subject to ONR’s normal due process arrangements, issued.

A small number of minor points were noted and referred to SL for its attention. There was no issue that was sufficient to prevent the granting of a CTO.