Reactor 1 statutory outage 2021 Radiological Protection inspection
- Site: Torness
- IR number: 20-143
- Date: March 2021
- LC numbers: N/A
Purpose of Intervention
This report is on ONR’s assessment of EDF Energy Nuclear Generation Ltd’s (henceforth referred to as the Licensee) radiological risk management arrangements during the 2021 statutory outage of reactor 1 at its Torness site. The site intervention sought to establish if the license’s statutory outage work programme was being conducted in compliance with the Ionising Radiations Regulations 2017 (IRR17). This will inform the ONR decision relating to the issue of a Licence Instrument for Consent for return to service of Reactor 1 at Torness.
The aim of the RP intervention was:
- To meet the requirements of the Torness 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 Torness.
Interventions Carried Out by ONR
The intervention focussed on the following during the opening meeting and plant inspection:
- Summary of outage programmed work and its radiological implications, as provided in an As Low As Reasonably Practicable document prepared for the outage.
- Review of outage RP performance, dose, Personal Contamination Events, significant events, observations
- NGL Radiation Protection personnel organisation including level of support available and role of Radiation Protection Supervisors.
- Outage contractor selection, training, control, supervision, and competence.
- Radiation protection input to outage work planning including risk assessment.
- Operational dose management, i.e. day-to-day dose management and profiling during the outage.
- Radiological event investigation and follow-up including response to leakages and spillages of radioactive material.
- Radiation survey instrument maintenance and support arrangements including adequate monitoring equipment resources for the outage.
- Radioactive source management.
- Health Physics clearance arrangements.
- Radiological protection arrangements for the maintenance and operation of gloveboxes and ventilated enclosures.
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 Torness Reactor 1 outage that require action by the Licensee or further follow-up by ONR.
Discussions with the Head of Radiological Protection for Torness 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 Torness Reactor 1 to power in due course.