Office for Nuclear Regulation

Reactor Unit 2 Statutory Outage 2015. Radiological Protection Inspection and Start-up Consent Recommendation under Licence Condition 30

Executive summary

Purpose of intervention

This Intervention Report is on an inspection I undertook at Heysham 1 (HYA) power station, concerning the 2015 statutory outage of reactor Unit 2, and was conducted in accordance with Civil Nuclear Reactor Programme intervention task sheet 2014/434028.

The aim of this intervention was to establish whether EDF Energy Nuclear Generation Ltd’s (the Licensee) statutory outage work programme for HYA, scheduled for completion between 13th of April and the 30th June 2015, was being conducted in compliance with the Ionising Radiations Regulations 1999.  Relevant ONR guidance was used during the inspection, in particular, Nuclear Safety Technical Inspection Guide, NS-INSP-GD-054 Revision 4.

My conclusions on these matters informed the development of my overall opinion on the Licensee’s readiness to bring reactor Unit 2 back to power in due course.

Interventions Carried Out by ONR

The following matters were addressed during the intervention:

Plant inspections of the Radiation Controlled Area (RCA) for the pile cap/ charge-hall; gas circulator, in addition other areas of inspection interest were agreed on the day.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

My inspection did not reveal any radiological protection issues, relevant to reactor Unit 2 start-up in due course, that required action by the Licensee or follow-up by ONR.  My discussions with the HoRP and his team indicated their strong commitment to effective radiological protection practice and a good level of compliance with the IRR99 was evident during plant inspections and so, accordingly, I have assigned an IIS rating of 2. 

Conclusion of Intervention

From a radiological protection standpoint, I was content with the Licensee’s conduct of its statutory outage work programme and with its level of compliance with the IRR99.

On the basis of my inspection of the IR99 aspects of the Unit 2 outage, I recommend that support be given for a Consent under licence condition 30 to allow Unit 2 at HYA to return to normal operating service.