Office for Nuclear Regulation & Environment Agency

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GDA issues & Resolution Plans

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 AP1000.

GDA Issue GDA Issue Ref. Resolution Plan Revised Resolution Plan Schedules or Revised Resolution Plans Closure letter Closure report
Internal Hazards
Internal Fire Safety Case Substantiation GI-AP1000-IH-01 GDA Issue GI-AP1000-IH-01
Resolution Plan
GI-AP1000-IH-01
Revised Resolution Plan
   
Internal Flooding Safety Case GI-AP1000-IH-02 GDA Issue GI-AP1000-IH-02
Resolution Plan
GI-AP1000-IH-02
Revised Resolution Plan
   
Pressure Part Failure GI-AP1000-IH-03 GDA Issue GI-AP1000-IH-03
Resolution Plan
GI-AP1000-IH-03
Revised Resolution Plan
   
Internal Explosion Safety Case Substantiation GI-AP1000-IH-04 GDA Issue GI-AP1000-IH-04
Resolution Plan
GI-AP1000-IH-04
Revised Resolution Plan
   
Internal Missile Safety Case GI-AP1000-IH-05 GDA Issue GI-AP1000-IH-05
Resolution Plan
GI-AP1000-IH-05
Revised Resolution Plan
   
Substantiation and Analysis of the Consequences of Dropped Loads and Impact from Lifting Equipment Included Within the AP1000 Design GI-AP1000-IH-06 GDA Issue GI-AP1000-IH-06
Resolution Plan
GI-AP1000-IH-06
Revised Resolution Plan
   
Civil Engineering
Justification of Novel Form of Structure for the Steel/ Concrete Composite Walls and Floors Known as CA Modules GI-AP1000-CE-01 GDA Issue GI-AP1000-CE-01
Resolution Plan
GI-AP1000-CE-01
Revised Resolution Plan
   
Further Justification of Novel Form of Structure for Steel / Concrete Composite Wall to the Enhanced Shield Building GI-AP1000-CE-02 GDA Issue GI-AP1000-CE-02
Resolution Plan
GI-AP1000-CE-02
Revised Resolution Plan
   
AP1000 Material Standards and Material Specifications GI-AP1000-CE-03 GDA Issue GI-AP1000-CE-03
Resolution Plan
GI-AP1000-CE-03
Revised Resolution Plan
   
Fuel Handling Area Secondary Containment Leak Detection and Collection System GI-AP1000-CE-04 GDA Issue GI-AP1000-CE-04
Resolution Plan
GI-AP1000-CE-04
Revised Resolution Plan
   
Probabilistic Safety Analysis (PSA)
Success Criteria for the PSA GI-AP1000-PSA-01 GDA Issue GI-AP1000-PSA-01
Resolution Plan
GI-AP1000-PSA-01
Revised Resolution Plan
   
Fire PSA GI-AP1000-PSA-02 GDA Issue GI-AP1000-PSA-02
Resolution Plan
GI-AP1000-PSA-02
Revised Resolution Plan
   
Fault Studies
Spent Fuel Pool Safety Case GI-AP1000-FS-01 GDA Issue GI-AP1000-FS-01
Resolution Plan
GI-AP1000-FS-01
Revised Resolution Plan
   
Design Reference Point and Adequacy of Design Basis Analysis GI-AP1000-FS-02 GDA Issue GI-AP1000-FS-02
Resolution Plan
GI-AP1000-FS-02
Revised Resolution Plan
   
Diversity for Frequent Faults GI-AP1000-FS-03 GDA Issue GI-AP1000-FS-03
Resolution Plan
GI-AP1000-FS-03
Revised Resolution Plan
   
Use of In-core Detectors to Protect Against Adverse Power Distributions GI-AP1000-FS-04 GDA Issue GI-AP1000-FS-04
Resolution Plan
GI-AP1000-FS-04
Revised Resolution Plan
   
Potential Enhancements to the Diverse Safety Injection System GI-AP1000-FS-05 GDA Issue GI-AP1000-FS-05
Resolution Plan
GI-AP1000-FS-05
Revised Resolution Plan
   
Validation of the IRWST Cooling Function for the PRHR GI-AP1000-FS-06 GDA Issue GI-AP1000-FS-06
Resolution Plan
GI-AP1000-FS-06
Revised Resolution Plan
   
Safety Case for Shutdown Faults GI-AP1000-FS-07 GDA Issue GI-AP1000-FS-07
Resolution Plan
GI-AP1000-FS-07
Revised Resolution Plan
   
Fault Schedule for AP1000 GI-AP1000-FS-08 GDA Issue GI-AP1000-FS-08
Resolution Plan
GI-AP1000-FS-08
Revised Resolution Plan
   
Control & Instrumentation
Adequacy of Safety Case for DAS GI-AP1000-CI-01 GDA Issue GI-AP1000-CI-01
Resolution Plan
GI-AP1000-CI-01
Revised Resolution Plan
   
DAS Adequacy of Architecture GI-AP1000-CI-02 GDA Issue GI-AP1000-CI-02
Resolution Plan
GI-AP1000-CI-02
Revised Resolution Plan
   
Diversity Between the PMS (CIM) and DAS GI-AP1000-CI-03 GDA Issue GI-AP1000-CI-03
Resolution Plan
GI-AP1000-CI-03
Revised Resolution Plan
   
PMS Spurious Operation GI-AP1000-CI-04 GDA Issue GI-AP1000-CI-04
Resolution Plan
GI-AP1000-CI-04
Revised Resolution Plan
   
SMART Device Justification for Use GI-AP1000-CI-05 GDA Issue GI-AP1000-CI-05
Resolution Plan
GI-AP1000-CI-05
Revised Resolution Plan
   
Ovation Platform - Adequacy of Safety Case GI-AP1000-CI-06 GDA Issue GI-AP1000-CI-06
Resolution Plan
GI-AP1000-CI-06
Revised Resolution Plan
   
DCIS - Adequacy of Safety Case GI-AP1000-CI-07 GDA Issue GI-AP1000-CI-07
Resolution Plan
GI-AP1000-CI-07
Revised Resolution Plan
   
PMS - Adequacy of Safety Case GI-AP1000-CI-08 GDA Issue GI-AP1000-CI-08
Resolution Plan
GI-AP1000-CI-08
Revised Resolution Plan
   
CIM - Adequacy of Safety Case GI-AP1000-CI-09 GDA Issue GI-AP1000-CI-09
Resolution Plan
GI-AP1000-CI-09
Revised Resolution Plan
   
Class 1 Displays and Controls GI-AP1000-CI-010 GDA Issue GI-AP1000-CI-010
Resolution Plan
GI-AP1000-CI-010
Revised Resolution Plan
   
Essential Electrical Systems
PCSR Presentation of Claims Arguments and Evidence GI-AP1000-EE-01 GDA Issue GI-AP1000-EE-01
Resolution Plan
GI-AP1000-EE-01
Revised Resolution Plan
   
Fuel Design
Fuel Pin Modelling Safety Justification GI-AP1000-FD-01 GDA Issue GI-AP1000-FD-01
Resolution Plan
GI-AP1000-FD-01
Revised Resolution Plan
   
Tolerability of Depressurisation Forces in LBLOCA GI-AP1000-FD-02 GDA Issue GI-AP1000-FD-02
Resolution Plan
GI-AP1000-FD-02
Revised Resolution Plan
   
Use of the BEACON Code for On-line Compliance GI-AP1000-FD-03 GDA Issue GI-AP1000-FD-03
Resolution Plan
GI-AP1000-FD-03
Revised Resolution Plan
   
Reactor Chemistry
Accident Source Terms GI-AP1000-RC-01 GDA Issue GI-AP1000-RC-01
Resolution Plan
GI-AP1000-RC-01
Revised Resolution Plan
   
Primary Sampling System GI-AP1000-RC-02 GDA Issue GI-AP1000-RC-02
Resolution Plan
GI-AP1000-RC-02
Revised Resolution Plan
   
Hydrogen Dosing System GI-AP1000-RC-03 GDA Issue GI-AP1000-RC-03
Resolution Plan
GI-AP1000-RC-03
Revised Resolution Plan
   
Radiation Protection
Spent Fuel Pool Criticality Safety Case GI-AP1000-RP-01 GDA Issue GI-AP1000-RP-01
Resolution Plan
GI-AP1000-RP-01
Revised Resolution Plan
   
Mechanical Engineering
Squib Valve Concept and Design Substantiation GI-AP1000-ME-01 GDA Issue GI-AP1000-ME-01
Resolution Plan
GI-AP1000-ME-01
Revised Resolution Plan
   
Metrication of Mechanical Equipment and Civil Structural Steelwork Connections GI-AP1000-ME-02 GDA Issue GI-AP1000-ME-02
Resolution Plan
GI-AP1000-ME-02
Revised Resolution Plan
   
Mechanical System Pipework Design GI-AP1000-ME-03 GDA Issue GI-AP1000-ME-03
Resolution Plan
GI-AP1000-ME-03
Revised Resolution Plan
   
Structural Integrity
Avoidance of Fracture GI-AP1000-SI-01 GDA Issue GI-AP1000-SI-01
Resolution Plan
GI-AP1000-SI-01
Revised Resolution Plan
   
Fatigue Analysis GI-AP1000-SI-02 GDA Issue GI-AP1000-SI-02
Resolution Plan
GI-AP1000-SI-02
Revised Resolution Plan
   
Reactor Coolant Pump GI-AP1000-SI-03 GDA Issue GI-AP1000-SI-03
Resolution Plan
GI-AP1000-SI-03
Revised Resolution Plan
   
Containment Vessel GI-AP1000-SI-04 GDA Issue GI-AP1000-SI-04
Resolution Plan
GI-AP1000-SI-04
Revised Resolution Plan
   
Compliance of AP1000 Main Structural Components with ASME III Design Rules GI-AP1000-SI-05 GDA Issue GI-AP1000-SI-05
Resolution Plan
GI-AP1000-SI-05
Revised Resolution Plan
   
Categorisation and Classification GI-AP1000-SI-06 GDA Issue GI-AP1000-SI-06
Resolution Plan
GI-AP1000-SI-06
Revised Resolution Plan
   
Human Factors
Completeness of the HF Safety Case GI-AP1000-HF-01 GDA Issue GI-AP1000-HF-01
Resolution Plan
GI-AP1000-HF-01
Revised Resolution Plan
   
Cross-Cutting
Limits and Conditions GI-AP1000-CC-01 GDA Issue GI-AP1000-CC-01
Resolution Plan
GI-AP1000-CC-01
Revised Resolution Plan
   
PCSR to Support GDA GI-AP1000-CC-02 GDA Issue GI-AP1000-CC-02
Resolution Plan
GI-AP1000-CC-02
Revised Resolution Plan
   
Consider and Action Plans to Address the Lessons Learnt from the Fukushima Event GI-AP1000-CC-03 GDA Issue GI-AP1000-CC-03 Resolution Plan GI-AP1000-CC-03
Revised Resolution Plan