Office for Nuclear Regulation
An agency of HSE

EDF and AREVA UK EPR™ Reactor GDA Issues, Resolution Plans and Issue Close-Out Reports

On this page you will find detail of each GDA Issue, associated Resolution Plans and, where appropriate, detail of the closure of Issues for the UK EPR™ Reactor design. Find out more about the close-out process

Also included on this page are revised resolution plans or revised resolution plan schedules, provided by EDF and AREVA, which aim to re-establish a predictable programme to address the remaining GDA issues.

GDA Issue GDA Issue Ref. Resolution Plan Revised Resolution Plan Schedules or Revised Resolution Plans Issue close-out
Internal Hazards
Dropped Loads and Impact GI-UKEPR-IH-01 GDA Issue GI-UKEPR-IH-01
Resolution Plan 		N/A GI-UKEPR-IH-01 Close out
Verification & Validation Studies GI-UKEPR-IH-02 GDA Issue GI-UKEPR-IH-02
Resolution Plan		 N/A GI-UKEPR-IH-02  Close out
Internal Flooding and Operator Actions GI-UKEPR-IH-03 GDA Issue GI-UKEPR-IH-03
Resolution Plan		 GI-UKEPR-IH-03 Programme rev GI-UKEPR-IH-03 Close Out
Substantiation of Break Preclusion Claims for RCC-M Components GI-UKEPR-IH-04 GDA Issue GI-UKEPR-IH-04
Resolution Plan		 N/A GI-UKEPR-IH-04 Close out
Civil Engineering and External Hazards
Hypothesis and Methodology Notes for Class 1 Structures GI-UKEPR-CE-01 GDA Issue GI-UKEPR-CE-01
Resolution Plan		 N/A GI-UKEPR-CE-01 Close out
Use of ETC-C for the Design and Construction of the UK EPR GI-UKEPR-CE-02 GDA Issue GI-UKEPR-CE-02
Resolution Plan		 N/A GI-UKEPR-CE-02 Close out
Beyond Design Basis Behaviour of the Containment GI-UKEPR-CE-03 GDA Issue GI-UKEPR-CE-03
Resolution Plan		 N/A GI-UKEPR-CE-03 Close out 
Containment Analysis GI-UKEPR-CE-04 GDA Issue GI-UKEPR-CE-04
Resolution Plan		 N/A GI-UKEPR-CE-04 Close out 
Reliability of the ETC-C GI-UKEPR-CE-05 GDA Issue GI-UKEPR-CE-05
Resolution Plan		 N/A GI-UKEPR-CE-05 Close out
Seismic Analysis Methodology GI-UKEPR-CE-06 GDA Issue GI-UKEPR-CE-06
Resolution Plan		 N/A

GI-UKEPR-CE-06 Close Out
Fault Studies
Heterogeneous Boron Dilution Faults GI-UKEPR-FS-01 GDA Issue GI-UKEPR-FS-01
Resolution Plan		 GI-UKEPR-FS-01 Programme rev GI-UKEPR-FS-01 Close out
Diversity for Frequent Faults GI-UKEPR-FS-02 GDA Issue GI-UKEPR-FS-02
Resolution Plan		 GI-UKEPR-FS-02 Programme rev GI-UKEPR-FS-02 Close out
Safety Case for Cask Reloading Pit GI-UKEPR-FS-03 GDA Issue GI-UKEPR-FS-03
Resolution Plan		 GI-UKEPR-FS-03 Programme rev GI-UKEPR-FS-03 Close out
Steam Generator Tube Rupture Safety Case GI-UKEPR-FS-04 GDA Issue GI-UKEPR-FS-04
Resolution Plan		 N/A GI-UKEPR-FS-04 Close out
Design Basis Analysis of Essential Support Systems GI-UKEPR-FS-05 GDA Issue GI-UKEPR-FS-05
Resolution Plan		 GI-UKEPR-FS05-Programme rev GI-UKEPR-FS-05 Close out
Control & Instrumentation
Design Information for Non-Computerised Safety System Required GI-UKEPR-CI-01 GDA Issue GI-UKEPR-CI-01
Resolution Plan		 GI-UKEPR-CI-01 Programme rev GI-UKEPRCI-01 Close out
Protection System Independent Confidence Building Measures GI-UKEPR-CI-02 GDA Issue GI-UKEPR-CI-02
Resolution Plan		 GI-UKEPR-CI-02 Programme rev GI-UKEPR-CI-02 Close out
Claims, Arguments, Evidence Trail GI-UKEPR-CI-03 GDA Issue GI-UKEPR-CI-03
Resolution Plan		 GI-UKEPR-CI-03 Programme rev GI-UKEPR-CI-03 Close out
SMART Devices GI-UKEPR-CI-04 GDA Issue GI-UKEPR-CI-04
Resolution Plan		 GI-UKEPR-CI-04 Programme rev GI-UKEPR-CI-04 Close out
Obsolescence of SPPA T2000 Platform GI-UKEPR-CI-05 GDA Issue GI-UKEPR-CI-05
Resolution Plan		 GI-UKEPR-CI-05 Programme rev GI-UKEPR-CI-05 Close out
Absence of Adequate C&I Architecture GI-UKEPR-CI-06 GDA Issue GI-UKEPR-CI-06
Resolution Plan		 GI-UKEPR-CI-06 Programme rev GI-UKEPR-CI-06
Essential Electrical Systems
PCSR Presentation of Claims Arguments and Evidence GI-UKEPR-EE-01 GDA Issue GI-UKEPR-EE-01
Resolution Plan		 GI-UKEPR-EE-01 Programme rev GI-UKEPR-EE-01 Close out
Reactor Chemistry
Combustible Gas Mitigation GI-UKEPR-RC-01 GDA Issue GI-UKEPR-RC-01
Resolution Plan		 GI-UKEPR-RC-01 Programme rev GI-UKEPR-RC-01 Close out
Control and Minimisation of Ex-Core Radiation GI-UKEPR-RC-02 GDA Issue GI-UKEPR-RC-02
Resolution Plan		 GI-UKEPR-RC-02 Programme rev GI-UKEPR-RC-02 Close out
Structural Integrity
Avoidance of Fracture GI-UKEPR-SI-01 GDA Issue GI-UKEPR-SI-01
Resolution Plan		 GI-UKEPR-SI-01 Programme rev GI-UKEPR-SI-01 Close out
Structural Integrity - RPV Surveillance Scheme GI-UKEPR-SI-02 GDA Issue GI-UKEPR-SI-02
Resolution Plan		 GI-UKEPR-SI-02 Programme rev GI-UKEPR-SI-02 Close out
Radiation Protection
Radiological Zoning and Bulk Shielding GI-UKEPR-RP-01 GDA Issue GI-UKEPR-RP-01
Resolution Plan		 N/A GI-UKEPR-RP-01 Close out
Human Factors
Inadequate Substantiation of Human Based Safety Claims GI-UKEPR-HF-01 GDA Issue GI-UKEPR-HF-01
Resolution Plan		 GI-UKEPR-HF-01 Programme rev GI-UKEPR-HF-01 Close out
Cross-Cutting
Categorisation and Classification of Systems Structures & Components GI-UKEPR-CC-01 GDA Issue GI-UKEPR-CC-01
Resolution Plan		 GI-UKEPR-CC-01 Programme rev GI-UKEPR-cc-01 Close out
Consolidated Final GDA Submission GI-UKEPR-CC-02 GDA Issue GI-UKEPR-CC-02
Resolution Plan		 GI-UKEPR-CC-02 Programme rev

GI-UKEPR-CC-02 Close out
Consider and Action Plans to Address the Lessons Learnt From the Fukushima Event GI-UKEPR-CC-03 GDA Issue GI-UKEPR-CC-03
Resolution Plan		 GI-UKEPR-CC-03 Programme rev GI-UKEPR-CC-03 Close out
Updated 12.12.12