AP1000 - GDA issues | Office for Nuclear Regulation

On this page you will find detail of each GDA Issue, associated resolution plans and details of the closure.

GDA issue	GDA issue ref	Resolution plan	Revised resolution plan schedules or revised resolution plans	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	GI-AP1000-IH-01 Closure Report
Internal Flooding Safety Case	GI-AP1000-IH-02 GDA Issue	GI-AP1000-IH-02 Resolution Plan	GI-AP1000-IH-02 Revised Resolution Plan	GI-AP1000-IH-02 Closure Report
Pressure Part Failure	GI-AP1000-IH-03 GDA Issue	GI-AP1000-IH-03 Resolution Plan	GI-AP1000-IH-03 Revised Resolution Plan	GI-AP1000-IH-03 Closure Report
Internal Explosion Safety Case Substantiation	GI-AP1000-IH-04 GDA Issue	GI-AP1000-IH-04 Resolution Plan	GI-AP1000-IH-04 Revised Resolution Plan	GI-AP1000-IH-04 Closure Report
Internal Missile Safety Case	GI-AP1000-IH-05 GDA Issue	GI-AP1000-IH-05 Resolution Plan	GI-AP1000-IH-05 Revised Resolution Plan	GI-AP1000-IH-05 Closure Report
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	GI-AP1000-IH-06 Closure Report
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	GI-AP1000-CE-01 Closure Report
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	GI-AP1000-CE-02 Closure Report
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	GI-AP1000-CE-03 Closure Report
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	GI-AP1000-CE-04 Closure Report
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	GI-AP1000-PSA-01 Closure Report
Fire PSA	GI-AP1000-PSA-02 GDA Issue	GI-AP1000-PSA-02 Resolution Plan	GI-AP1000-PSA-02 Revised Resolution Plan	GI-AP1000-PSA-02 Closure Report
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	GI-AP1000-FS-01 Closure Report
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	GI-AP1000-FS-02 Closure Report
Diversity for Frequent Faults	GI-AP1000-FS-03 GDA Issue	GI-AP1000-FS-03 Resolution Plan	GI-AP1000-FS-03 Revised Resolution Plan	GI-AP1000-FS-03 Closure Report
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	GI-AP1000-FS-04 Closure Report
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	GI-AP1000-FS-05 Closure Report
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	GI-AP1000-FS-06 Closure Report
Safety Case for Shutdown Faults	GI-AP1000-FS-07 GDA Issue	GI-AP1000-FS-07 Resolution Plan	GI-AP1000-FS-07 Revised Resolution Plan	GI-AP1000-FS-07 Closure Report
Fault Schedule for AP1000	GI-AP1000-FS-08 GDA Issue	GI-AP1000-FS-08 Resolution Plan	GI-AP1000-FS-08 Revised Resolution Plan	GI-AP1000-FS-08 Closure Report
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	GI-AP1000-CI-01 Closure Report
DAS Adequacy of Architecture	GI-AP1000-CI-02 GDA Issue	GI-AP1000-CI-02 Resolution Plan	GI-AP1000-CI-02 Revised Resolution Plan	GI-AP1000-CI-02 Closure Report
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	GI-AP1000-CI-03 Closure Report
PMS Spurious Operation	GI-AP1000-CI-04 GDA Issue	GI-AP1000-CI-04 Resolution Plan	GI-AP1000-CI-04 Revised Resolution Plan	GI-AP1000-CI-04 Closure Report
SMART Device Justification for Use	GI-AP1000-CI-05 GDA Issue	GI-AP1000-CI-05 Resolution Plan	GI-AP1000-CI-05 Revised Resolution Plan	GI-AP1000-CI-05 Closure Report
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	GI-AP1000-CI-06 Closure Report
DCIS - Adequacy of Safety Case	GI-AP1000-CI-07 GDA Issue	GI-AP1000-CI-07 Resolution Plan	GI-AP1000-CI-07 Revised Resolution Plan	GI-AP1000-CI-07 Closure Report
PMS - Adequacy of Safety Case	GI-AP1000-CI-08 GDA Issue	GI-AP1000-CI-08 Resolution Plan	GI-AP1000-CI-08 Revised Resolution Plan	GI-AP1000-CI-08 Closure Report
CIM - Adequacy of Safety Case	GI-AP1000-CI-09 GDA Issue	GI-AP1000-CI-09 Resolution Plan	GI-AP1000-CI-09 Revised Resolution Plan	GI-AP1000-CI-09 Closure Report
Class 1 Displays and Controls	GI-AP1000-CI-010 GDA Issue	GI-AP1000-CI-010 Resolution Plan	GI-AP1000-CI-010 Revised Resolution Plan	GI-AP1000-CI-010 Closure Report
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	GI-AP1000-EE-01 Closure Report
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	GI-AP1000-FD-01 Closure Report
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	GI-AP1000-FD-02 Closure Report
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	GI-AP1000-FD-03 Closure Report
Reactor Chemistry
Accident Source Terms	GI-AP1000-RC-01 GDA Issue	GI-AP1000-RC-01 Resolution Plan	GI-AP1000-RC-01 Revised Resolution Plan	GI-AP1000-RC-01 Closure Report
Primary Sampling System	GI-AP1000-RC-02 GDA Issue	GI-AP1000-RC-02 Resolution Plan	GI-AP1000-RC-02 Revised Resolution Plan	GI-AP1000-RC-02 Closure Report
Hydrogen Dosing System	GI-AP1000-RC-03 GDA Issue	GI-AP1000-RC-03 Resolution Plan	GI-AP1000-RC-03 Revised Resolution Plan	GI-AP1000-RC-03 Closure Report
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	GI-AP1000-RP-01 Closure Report
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	GI-AP1000-ME-01 Closure Report
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	GI-AP1000-ME-02 Closure Report
Mechanical System Pipework Design	GI-AP1000-ME-03 GDA Issue	GI-AP1000-ME-03 Resolution Plan	GI-AP1000-ME-03 Revised Resolution Plan	GI-AP1000-ME-03 Closure Report
Structural Integrity
Avoidance of Fracture	GI-AP1000-SI-01 GDA Issue	GI-AP1000-SI-01 Resolution Plan	GI-AP1000-SI-01 Revised Resolution Plan	GI-AP1000-SI-01 Closure Report
Fatigue Analysis	GI-AP1000-SI-02 GDA Issue	GI-AP1000-SI-02 Resolution Plan	GI-AP1000-SI-02 Revised Resolution Plan	GI-AP1000-SI-02 Closure Report
Reactor Coolant Pump	GI-AP1000-SI-03 GDA Issue	GI-AP1000-SI-03 Resolution Plan	GI-AP1000-SI-03 Revised Resolution Plan	GI-AP1000-SI-03 Closure Report
Containment Vessel	GI-AP1000-SI-04 GDA Issue	GI-AP1000-SI-04 Resolution Plan	GI-AP1000-SI-04 Revised Resolution Plan	GI-AP1000-SI-04 Closure Report
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	GI-AP1000-SI-05 Closure Report
Categorisation and Classification	GI-AP1000-SI-06 GDA Issue	GI-AP1000-SI-06 Resolution Plan	GI-AP1000-SI-06 Revised Resolution Plan	GI-AP1000-SI-06 Closure Report
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	GI-AP1000-HF-01 Closure Report
Cross-Cutting
Limits and Conditions	GI-AP1000-CC-01 GDA Issue	GI-AP1000-CC-01 Resolution Plan	GI-AP1000-CC-01 Revised Resolution Plan	GI-AP1000-CC-01 Closure Report
PCSR to Support GDA	GI-AP1000-CC-02 GDA Issue	GI-AP1000-CC-02 Resolution Plan	GI-AP1000-CC-02 Revised Resolution Plan	GI-AP1000-CC-02 Closure Report
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	GI-AP1000-CC-03 Closure Report