Office for Nuclear Regulation

Heysham 2 - Reactor Unit 7 Statutory Outage 2018 Radiological Protection Inspection

Executive summary

Purpose of Intervention

This intervention was in relation to the 2018 statutory outage of Reactor 7 (R7) at Heysham 2 and in particular the radiological protection (RP) arrangements that the licensee had in place for the outage.  It was conducted as part of a series of planned ONR interventions related to the Heysham 2 statutory R7 outage.

The aim of this specialist intervention was to:

Interventions Carried Out by ONR

During the intervention a review of radiological protection arrangements was addressed.  This included:

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

The intervention was performed in line with ONR’s guidance requirements (as described in ONR technical inspection guides, which can be found at in the areas inspected.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable – no system based inspection was undertaken.

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

This sampled inspection did not reveal any significant nuclear safety issues relevant to the R7 outage that require action by the Licensee or further follow-up by ONR. 

Discussions with the Head of Radiological Protection (HoRP) at the Station indicated their strong commitment to effective radiological protection practice and a good level of compliance with the IRR17 was evident during plant inspections. 

An inspection rating of Green was therefore assigned against IRR17.

Conclusion of Intervention

From a RP standpoint, we were content with the Licensee’s conduct of its statutory outage work programme and with its level of compliance against its associated RP documentation (polices & procedures).  

At the time of writing this report, there were no specific RP recommendations that need to be made relating to ONR granting a Consent under licence condition 30 of the Licensee’s nuclear site licence allowing the Licensee to return R7 to power in due course.