On this page you will find detail of each Regulatory Observation and the associated Resolution Plan.
| Regulatory Observation title | RO ref. | RO res plan ref. | Closure letter |
|---|---|---|---|
| Diverse Actuation System Design Shortfalls | RO-UKHPR1000-0001 | RO-UKHPR1000-0001 res plan | RO-UKHPR1000-0001 closure letter |
| Demonstration that the UK HPR1000 Design is Suitably Aligned with the Generic Site Envelope | RO-UKHPR1000-0002 | RO-UKHPR1000-0002 res plan | RO-UKHPR1000-0002 closure letter |
| Suitable and Sufficient Severe Accident Analysis Safety Case | RO-UKHPR1000-0003 | RO-UKHPR1000-0003 res plan | RO-UKHPR1000-0003 closure letter |
| Development of a Suitable and Sufficient Safety Case | RO-UKHPR1000-0004 | RO-UKHPR1000-0004 res plan | RO-UKHPR1000-0004 closure letter |
| Demonstration that the UK HPR1000 Design reduces the risks associated with radioactive waste management, so far as is reasonably practicable | RO-UKHPR1000-0005 | RO-UKHPR1000-0005 res plan | RO-UKHPR1000-0005 closure letter |
| Avoidance of Fracture Demonstration | RO-UKHPR1000-0006 | RO-UKHPR1000-0006 res plan | RO-UKHPR1000-0006 closure letter |
| Aircraft Impact Safety Case for UK HPR1000 | RO-UKHPR1000-0007 | RO-UKHPR1000-0007 res plan | RO-UKHPR1000-0007 closure letter |
| Justification of the Structural Integrity Classification of the Main Coolant Loop | RO-UKHPR1000-0008 | RO-UKHPR1000-0008 res plan | RO-UKHPR1000-0008 closure letter |
| Geotechnical Design Parameters | RO-UKHPR1000-0009 | RO-UKHPR1000-0009 res plan | RO-UKHPR1000-0009 closure letter |
| Discharge estimates and limits | RO-UKHPR1000-0010 | RO-UKHPR1000-0010 res plan | RO-UKHPR1000-0010 closure letter |
| Human Factors capability and integration to deliver the GDA of UK HPR1000 | RO-UKHPR1000-0011 | RO-UKHPR1000-0011 res plan | RO-UKHPR1000-0011 closure letter |
| Identification and Application of Relevant Good Practice Applicable to Mechanical Engineering for the UK HPR1000 Design | RO-UKHPR1000-0012 | RO-UKHPR1000-0012 res plan | RO-UKHPR1000-0012 closure letter |
| Modelling of computer based system reliability in the PSA | RO-UKHPR1000-0013 | RO-UKHPR1000-0013 res plan | RO-UKHPR1000-0013 closure letter |
| Spent Fuel Building – Design of Nuclear Lifting Operations to Demonstrate Relevant Risks are Reduced to ALARP | RO-UKHPR1000-0014 | RO-UKHPR1000-0014 res plan | RO-UKHPR1000-0014 closure letter |
| Demonstration that Risks Associated with Fuel Deposits are Reduced so far as is Reasonably Practicable (SFAIRP) | RO-UKHPR1000-0015 | RO-UKHPR1000-0015 res plan | RO-UKHPR1000-0015 closure letter |
| Demonstration of compliance with relevant good practice for control and instrumentation | RO-UKHPR1000-0016 | RO-UKHPR1000-0016 res plan | RO-UKHPR1000-0016 closure letter |
| Demonstration of independence between C&I systems | RO-UKHPR1000-0017 | RO-UKHPR1000-0017 res plan | RO-UKHPR1000-0017 closure letter |
| Substantiation of HRA Inputs in PSA Model | RO-UKHPR1000-0018 | RO-UKHPR1000-0018 res plan | RO-UKHPR1000-0018 closure letter |
| Substantiation of Initiating Event Frequencies in the PSA | RO-UKHPR1000-0019 | RO-UKHPR1000-0019 res plan | RO-UKHPR1000-0019 closure letter |
| Veracity of PSA Data | RO-UKHPR1000-0020 | RO-UKHPR1000-0020 res plan | RO-UKHPR1000-0020 closure letter |
| Demonstration of the adequacy of Examination, Maintenance, Inspection and Testing (EMIT) of structures, systems and components important to safety | RO-UKHPR1000-0021 | RO-UKHPR1000-0021 res plan | RO-UKHPR1000-0021 closure letter |
| Design for Access and Inspectability | RO-UKHPR1000-0022 | RO-UKHPR1000-0022 res plan | RO-UKHPR1000-0022 closure letter |
| Demonstration of Diverse Protection for frequent faults | RO-UKHPR1000-0023 | RO-UKHPR1000-0023 res plan | RO-UKHPR1000-0023 closure letter |
| Management of Safety Quality Assurance | RO-UKHPR1000-0024 | RO-UKHPR1000-0024 res plan | RO-UKHPR1000-0024 closure letter |
| Vital Area Identification and Categorisation | RO-UKHPR1000-0025 | RO-UKHPR1000-0025 res plan | RO-UKHPR1000-0025 closure letter |
| Demonstration that radioactivity has been reduced So Far As Is Reasonably Practicable (SFAIRP) | RO-UKHPR1000-0026 | RO-UKHPR1000-0026 res plan | RO-UKHPR1000-0026 closure letter |
| Debris effects on Safety Injection System and Containment Heat Removal System performance | RO-UKHPR1000-0027 | RO-UKHPR1000-0027 res plan | RO-UKHPR1000-0027 closure letter |
| Adequate Justification of Estimated Public Doses for UK HPR1000 | RO-UKHPR1000-0028 | RO-UKHPR1000-0028 res plan | RO-UKHPR1000-0028 closure letter |
| Internal Fire PSA | RO-UKHPR1000-0029 | RO-UKHPR1000-0029 res plan | RO-UKHPR1000-0029 closure letter |
| Justification For The Use Of Automatic Diagnosis | RO-UKHPR1000-0030 | RO-UKHPR1000-0030 res plan | RO-UKHPR1000-0030 closure letter |
| Control of Boron during Normal Operations and Faults | RO-UKHPR1000-0031 | RO-UKHPR1000-0031 res plan | RO-UKHPR1000-0031 closure letter |
| Inadvertent Flooding of the Reactor Pit | RO-UKHPR1000-0032 | RO-UKHPR1000-0032 res plan | RO-UKHPR1000-0032 closure letter |
| Steam Generator Code Provisions and Mitigation of Relevant Risks | RO-UKHPR1000-0033 | RO-UKHPR1000-0033 res plan | RO-UKHPR1000-0033 closure letter |
| Minimisation of flow accelerated corrosion (FAC) risks so far as is reasonably practicable (SFAIRP) | RO-UKHPR1000-0034 | RO-UKHPR1000-0034 res plan | RO-UKHPR1000-0034 closure letter |
| Optimisation of collective occupational radiation exposure for the UK HPR1000 | RO-UKHPR1000-0035 | RO-UKHPR1000-0035 res plan | RO-UKHPR1000-0035 closure letter |
| HEPA filter type | RO-UKHPR1000-0036 | RO-UKHPR1000-0036 res plan | RO-UKHPR1000-0036 closure letter |
| In-Core Instrument Assemblies Radioactive Waste Safety Case | RO-UKHPR1000-0037 | RO-UKHPR1000-0037 res plan | RO-UKHPR1000-0037 closure letter |
| Demonstration of the appropriate power rating and performance capability of the Electrical Power System | RO-UKHPR1000-0038 | RO-UKHPR1000-0038 res plan | RO-UKHPR1000-0038 closure letter |
| Performance Analysis of UK HPR1000 Heating Ventilation and Air Conditioning Systems | RO-UKHPR1000-0039 | RO-UKHPR1000-0039 res plan | RO-UKHPR1000-0039 closure letter |
| Provision of an adequate safety case for the interim storage of Intermediate Level Waste (ILW) | RO-UKHPR1000-0040 | RO-UKHPR1000-0040 res plan | RO-UKHPR1000-0040 closure letter |
| Disposability of Higher Activity Waste from the UK HPR1000 | RO-UKHPR1000-0041 | RO-UKHPR1000-0041 res plan | RO-UKHPR1000-0041 closure letter |
| Robust Demonstration of ALARP for Decommissioning of the UK HPR1000 | RO-UKHPR1000-0042 | RO-UKHPR1000-0042 res plan | RO-UKHPR1000-0042 closure letter |
| ALARP Demonstration for PSA | RO-UKHPR1000-0043 | RO-UKHPR1000-0043 res plan | RO-UKHPR1000-0043 closure letter |
| Identification and Use of Operational Experience (OPEX) in the UK HPR1000 Generic Design and Safety Case | RO-UKHPR1000-0044 | RO-UKHPR1000-0044 res plan | RO-UKHPR1000-0044 closure letter |
| Thermal hydraulic performance at fuel assembly edge | RO-UKHPR1000-0045 | RO-UKHPR1000-0045 res plan | RO-UKHPR1000-0045 closure letter |
| Demonstration that the Risks to HIC Components from Internal Hazards are Reduced to ALARP | RO-UKHPR1000-0046 | RO-UKHPR1000-0046 res plan | RO-UKHPR1000-0046 closure letter |
| Suitable and sufficient Level 2 PSA for UK HPR1000 | RO-UKHPR1000-0047 | RO-UKHPR1000-0047 res plan | RO-UKHPR1000-0047 closure letter |
| Equipment Qualification for Mechanical Engineering Based Structures Systems and Components | RO-UKHPR1000-0048 | RO-UKHPR1000-0048 res plan | RO-UKHPR1000-0048 closure letter |
| Generation, Transport and Behaviour of Tritium During Normal Operations | RO-UKHPR1000-0049 | RO-UKHPR1000-0049 res plan | RO-UKHPR1000-0049 closure letter |
| Selected Spent Fuel Interim Storage Technology ALARP Demonstration | RO-UKHPR1000-0050 | RO-UKHPR1000-0050 res plan | RO-UKHPR1000-0050 closure letter |
| Demonstration of BAT for the Examination, Maintenance, Inspection and Testing (EMIT) of Systems, Structures and Components (SSCs) that provide an Environmental Protection Function (EPF) | RO-UKHPR1000-0051 | RO-UKHPR1000-0051 res plan | RO-UKHPR1000-0051 closure letter |
| Design and Safety Case for Class 1 and 2 Human Machine Interfaces Employed in the Main Control Room and Remote Shutdown Station | RO-UKHPR1000-0052 | RO-UKHPR1000-0052 res plan | RO-UKHPR1000-0052 closure letter |
| Provision of evidence to support bounding case justifications | RO-UKHPR1000-0053 | RO-UKHPR1000-0053 res plan | RO-UKHPR1000-0053 closure letter |
| Validation of Internal Hazard loadings used for Civil Engineering design of non-barrier elements | RO-UKHPR1000-0054 | RO-UKHPR1000-0054 res plan | RO-UKHPR1000-0054 closure letter |
| Consequential internal hazards resulting from seismic events | RO-UKHPR1000-0055 | RO-UKHPR1000-0055 res plan | RO-UKHPR1000-0055 closure letter |
| Fuel Route Safety Case | RO-UKHPR1000-0056 | RO-UKHPR1000-0056 res plan | RO-UKHPR1000-0056 closure letter |
| Independent Confidence Building Measures for complex control and instrumentation systems | RO-UKHPR1000-0057 | RO-UKHPR1000-0057 res plan | RO-UKHPR1000-0057 closure letter |
| Justification of the Structural Integrity Classification of the UK HPR1000 Main Steam Line and Associated Major Valves in the Safeguards Buildings | RO-UKHPR1000-0058 | RO-UKHPR1000-0058 res plan | RO-UKHPR1000-0058 closure letter |
| Evidence of Production Excellence for the FirmSys platform | RO-UKHPR1000-0059 | RO-UKHPR1000-0059 res plan | RO-UKHPR1000-0059 closure letter |
| Scope and Plan for Radiation Shielding Assessments for the UK HPR1000 Generic Design | RO-UKHPR1000-0060 | RO-UKHPR1000-0060 res plan | RO-UKHPR1000-060 closure letter |