Office for Nuclear Regulation

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Project Assessment Reports (PARs)

Project assessment reports (PARs) are documents which explain our regulatory decisions. The Office for Nuclear Regulation aims to be open and transparent in its work as far as possible and as part of this, we wish to help all of our stakeholders, including the public, to understand our work and engage with us about it. In April 2010, we published executive summaries for PARs for the first time and from April 2011, we have started to publish full PARs with an ambition to publish all of our project assessment reports online within six months.

Some terminology used in the nuclear industry is unfamiliar to those outside of it, so we aim to write executive summaries for the reports in plain English.

We always appreciate your feedback on these reports, how we can improve them, or questions you might have.

ONRenquiries@onr.gsi.gov.uk

Earlier PARs

PARs issued in 2015

Atomic Weapons Establishment (AWE) Aldermaston [Nuclear site licence 77]

LI no. Issued Title
531 Q2 Licence Condition 22(1) of Schedule 2 of the Nuclear Site Licence No. 77 – AWE Aldermaston: Undertaking The Assay of Coolant Tank 59

Atomic Weapons Establishment (AWE) Burghfield [Nuclear site licence 78A]

LI no. Issued Title
529 & 530 Q1 Decommissioning Arrangements

BAE Systems Marine Limited (Barrow) [Nuclear site licence 42B]

LI no. Issued Title
515 Q3 BAE Request for Agreement to commence Artful Phase 7
514 Q1 Approval of the amended Site Emergency Plan Issue 2 Rev 3

Berkeley [Nuclear site licence 92]

LI no. Issued Title
502 Q1 Magnox limited Licence Condition 28 Consolidation - Agreement under Licence Condition 28(7) to extension of any intervals specific in the plant maintenance schedule that are controlled in accordance with procedures specified in the maintenance schedule preface

Bradwell [Nuclear site licence 93]

LI no. Issued Title
510 Q1 Approval of the revised Bradwell Site Emergency Plan - Issue 10
501 Q1 Magnox limited Licence Condition 28 Consolidation - Agreement under Licence Condition 28(7) to extension of any intervals specific in the plant maintenance schedule that are controlled in accordance with procedures specified in the maintenance schedule preface

Chapelcross [Nuclear site licence 15]

LI no. Issued Title
532 & 533 Q1 Approval under Licence Condition 28(5) for amendment of the Plant Maintenance Schedule Preface and agreement under Licence Condition 28(7) for extension of any interval specified in the Plant Maintenance Schedule

Dounreay [Nuclear site licence 17]

LI no. Issued Title
N/A Q1 Enforcement Action in Response to a Fire in the Dounreay PFR Sodium Tank Farm

Dungeness A [Nuclear site licence 94]

LI no. Issued Title
501 Q1 Magnox limited Licence Condition 28 Consolidation - Agreement under Licence Condition 28(7) to extension of any intervals specific in the plant maintenance schedule that are controlled in accordance with procedures specified in the maintenance schedule preface

Dungeness B [Nuclear site licence 61]

LI no. Issued Title
546 Q1 NP/SC 7694: Proposal to Install Bursting Discs in the Reactor Gas SRV Filter Vessels: Paper of Principle

EDF Energy Nuclear Generation Limited (Hartlepool, Heysham 1, Heysham 2, Dungeness B, Hinkley Point B, Sizewell B, Hunterston B, Torness)

LI no. Issued Title
N/A Q2 Fukushima Recommendations and Stress Test Findings: Overall Review of EDF Energy Nuclear Generation Limited Responses

GE Healthcare Limited, Cardiff [Nuclear site licence 38C]

LI no. Issued Title
N/A Q2 Assessment of de-/re-licensing application

Hartlepool [Nuclear site licence 59]

LI no. Issued Title
552 Q3 NP/SC 7734 Paper of Principle - Installation of Insulation in Boiler Spine Annulus and Subsequent Reactor Operation

Harwell [Nuclear site licence 101]

LI no. Issued Title
N/A Q2 Relicensing Research Sites Restoration Limited Sites to Magnox Limited
500 Q2 Initial Approval of Terms of Reference of a Nuclear Safety Committee for Harwell and Winfrith

Heysham 1 and 2 [Nuclear site licence 60]

LI no. Issued Title
N/A Q1 Basis of enforcement decision following preliminary investigation into CO2 release at Heysham 1
591 Q3 NP/SC 7734 Paper of Principle - Installation of Insulation in Boiler Spine Annulus and Subsequent Reactor Operation
588 Q2 EDF Energy Nuclear Generation Limited (NGL) – Heysham – consent under Licence Condition 30(3) to start-up Heysham 2 Reactor 7 following the 2015 Periodic Shutdown
587 Q1

EC354024 Version 03 Heysham Reactor 1: Interim Safety Case for Return to Service on 3 Quadrants Following Discovery of a Defect in 1D1 Boiler Spine

Assessment reports:

582 Q1 Assessment of the Off-load Depressurised Refuelling Safety Case (NP/SC 7684, EC 349137, October 2014) presented by EdF Energy NGL for Heysham 2

Hinkley Point A [Nuclear site licence 95]

LI no. Issued Title
N/A Q2

Determination of the requirement for Off-site Emergency Planning and Prior Information Areas for the Hinkley Point A Nuclear Licensed Site: Radiation (Emergency Preparedness and Public Information) Regulations 2001

N/A Q2 ONR Assessment of the Hinkley Point ‘A’ Site Periodic Safety Review 2015-25 Submission
501 Q1 Magnox limited Licence Condition 28 Consolidation - Agreement under Licence Condition 28(7) to extension of any intervals specific in the plant maintenance schedule that are controlled in accordance with procedures specified in the maintenance schedule preface

Hinkley Point B [Nuclear site licence 95]

LI no. Issued Title
548 Q1 EDF Energy Generation Limited Hinkley Point B Power Station - Request for Consent for Start Up of Reactor 4 Under Licence Condition 30 (3)
547 Q1 NP/SC 7711: Update to Hinkley Point B Non Fuel Dropped Load Safety Case to enable vessel entry during the deployment of selected in-core inspection equipment

Hunterston A [Nuclear site licence 16]

LI no. Issued Title
517 Q1 Hunterston A ILW Store - Request for agreement to active commissioning

Hunterston B [Nuclear site licence 13]

LI no. Issued Title
546 Q3 Proposal to replace Nuclear Safety Requirement 9 Revision 10 with Revision 11 and thereby increase the limiting power of a channel, immediately prior to discharge, to 1.88MW from the current limit of 1.65MW for mid-life fuel
545 Q1 Application for Agreement under LC 22(1) arrangements to put into service the new nitrogen injection and blowdown system at Hunterston B power station
544 Q1 Amendment to Nuclear Safety Requirements at Hunterston B Power Station - Revision of Nuclear Safety Requirement 04

Sellafield [Nuclear site licence 31G]

LI no. Issued Title
N/A Q2 Basis of enforcement decision following Magnox Reprocessing Separation Plant Events and Operating Instruction Breaches
N/A Q1 Consideration of the Continued Regulatory Approach for the ILW Specifications
N/A Q1 Review of Regulatory Approach for the 2015 Magnox Reprocessing Periodic Shutdown
N/A Q1 Project Assessment Report – HAL Stocks Specification
N/A Q1 ONR review of the MSSS LTPR submission

Sizewell A [Nuclear site licence 96]

LI no. Issued Title
509 Q1 Proposal to remove approved reactor cooling operating rules
501 Q1 Magnox limited Licence Condition 28 Consolidation - Agreement under Licence Condition 28(7) to extension of any intervals specific in the plant maintenance schedule that are controlled in accordance with procedures specified in the maintenance schedule preface

Sizewell B [Nuclear site licence 63]

LI no. Issued Title
N/A Q1 Assessment of Sizewell B Periodic Safety Review
547 Q2 Approval Under Licence Condition 23(5) for an Amendment to Technical Specifications, Safety Limits and Nuclear Safety Requirements, Section 2.3.3, ‘Instrumentation’ and Table NSR 3.2-1 in Particular

Trawsfynydd [Nuclear Site Licence 81]

LI no. Issued Title
N/A Q1

Determination of the requirement for Off-site Emergency Planning and Public Information Areas for the Trawsfynydd Nuclear Licensed Site: Radiation (Emergency Preparedness and Public Information) Regulations 2001

Winfrith [Nuclear site licence 100]

LI no. Issued Title
N/A Q2 Relicensing Research Sites Restoration Limited Sites to Magnox Limited
500 Q2 Initial Approval of Terms of Reference of a Nuclear Safety Committee for Harwell and Winfrith

Urenco UK Limited [Nuclear site licence 48E]

LI no. Issued Title
538 Q2 Approval of the revised Capenhurst Emergency Plan, C(EP-5) Rev 3
Updated 2015-08-27