Heysham 1 Reactor 1 Statutory Outage 2020 Radiological Protection inspection
- Site: Heysham 1
- IR number: 20-073
- Date: October 2020
- LC numbers: N/A
Purpose of Intervention
This intervention report relates to an inspection at Heysham 1 power station during the 2020 statutory outage of Reactor 1. Due to COVID restrictions, the intervention on site was carried out by EDF’s corporate Radiological Protection (RP) function, with oversight from ONR.
The aim of the RP intervention was:
- To meet the requirements of the Heysham 1 Statutory Outage Project as defined in the ONR Outage Inspection Plan.
- To provide regulatory confidence in relation to RP and compliance with Ionising Radiations Regulations 2017 (IRR’17).
- To inform the ONR decision relating to the issue of a Licence Instrument for Consent for return to service of Reactor 1 at Heysham 1.
Interventions Carried Out by ONR
The plant visit was carried out by RP staff from NGL corporate centre (as stated above). This inspection sampled the following through discussions, document review, and plant visits:
- Summary of outage programmed work and its radiological implications, which was provided in an As Low As Reasonably Practicable (ALARP) document produced for this statutory outage.
- Adequacy of RP personnel arrangements.
- Contractor control and supervision.
- RP input to outage work planning.
- Radiation survey instrument maintenance and provision.
- Radiological event investigation and follow-up.
- Planning for radiologically significant outage tasks.
- Operational dose management, i.e. day-to-day dose management and profiling during the outage.
- Radioactive source management.
- Health Physics clearance arrangements.
- Reviewing the observations given by RP staff from NGL corporate centre during the intervention.
Explanation of Judgement if Safety System Not Judged to be Adequate
Key Findings, Inspector's Opinions and Reasons for Judgements Made
The RP inspection did not reveal any significant nuclear safety concerns relevant to the Heysham 1 Reactor 1 outage that require action by the Licensee or further follow-up by ONR.
Discussions with the Head of Radiological Protection (HoRP) for Heysham 1 gave me suitable assurance that there is effective RP practice in place; an adequate level of compliance with the requirements of IRR’17 was noted by the RP staff from the NGL corporate centre.
An inspection rating of Green was therefore assigned against IRR’17.
Conclusion of Intervention
I identified no matters that should prevent ONR granting Consent under license condition 30 allowing the Licensee to return Heysham 1 Reactor 1 to power in due course.