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.

Earlier PARs

PARs issued in 2014

Bradwell [Nuclear site licence 93]

LI no. Issued Title
N/A Q2 ONR’s Determination of a Revision to the Extent of the Local Authority Off-Site Emergency Planning Area and the Operator’s Prior Information Area as Provided for under Regulations 9 and 16 of the Radiation (Emergency Preparedness and Public Information) Regulations 2001

ONR letter to Magnox Ltd - Bradwell off-site emergency planning and prior information area

ONR letter to Essex County Council - Bradwell off-site emergency planning and prior information area

Devonport Royal Dockyard [Nuclear site licence 50B]

LI no. Issued Title
554 & 544 Q1 Application for Approval of Amended or Altered DRDL Nuclear Safety Committee Terms of Reference and the Arrangements for Considering Urgent Nuclear and Radiological Safety Proposals under Arrangements made under Licence Condition13(3) and (12)

Devonshire Dock Complex [Nuclear site licence 42B]

LI no. Issued Title
513 Q2 Request for Agreement to commence Artful Hold Point Phase 6

Dounreay [Nuclear site licence 17]

LI no. Issued Title
519 Q1 Management of Decommissioning Milestones Withdrawal of Approval of DSRL Decommissioning Arrangements
509 Q3 Approval of the revised Dungeness A Site Emergency Plan

Dungeness A [Nuclear site licence 94]

LI no. Issued Title
509 Q3 Approval of the revised Dungeness A Site Emergency Plan

Dungeness B [Nuclear site licence 61]

LI no. Issued Title
N/A Q3 ONR Review of NGL DNB PLEX Technical Overview Report
544 Q1 Agreement to Replacement of Reactor Coolant Pressure Rate Trip Equipment
543 Q2 Consent under Licence Condition 30(3) to start-up Reactor 21 Following the 2014 Periodic Shutdown
542 Q1 NP/SC 7373 DPS Replacement Project Stage Submission 5 Part 1 - Commissioning

Harwell [Nuclear site licence 84]

LI no. Issued Title
N/A Q3 Assessment of Application from Research Sites Restoration Ltd for a variation to Harwell Nuclear Site Licence (No.99) to exclude the B353 Area and VEC Plantation Area from the Nuclear Licensed Site
507 Q1 Approval of the Revised Harwell Site Emergency Plan
506 Q1 Assessment of Proposal by Research Sites Restoration Limited for Transition to a New Parent Body Organisation

Hinkley Point C reports

LI no. Issued Title
503 Q1 Approval of NNB Generation Company Limited (NNB GenCo) arrangements for Urgent Safety Proposals, described in Appendix A of the Hinkley Point C Nuclear Safety Committee Terms of Reference NNB-OSL-TOR-000003, dated 13 December 2012

Hunterston A [Nuclear site licence 16]

LI no. Issued Title
519 Q3 Request for Agreement to Category A Changes to Licence Condition 35 Decommissioning Programme as Described in NP/SC 5138

Hunterston B [Nuclear site licence 13]

LI no. Issued Title
543 Q3 EDF Energy Nuclear Generation Limited (NGL) – Hunterston BPower Station – Nuclear Site Licence No. Sc.13 – Request for consent for start up of Reactor 4 made under Licence Condition 30(3)
542 Q3 HNB NP/SC 7706 A Proposal to Increase Loads Applied to Lifting Path and Reactor Internal Components Close to Component Limits to Aid the Recovery of HNB R4 PIFA 1280 (Maximum/Minimum Safe Loads Handling Case) EC 350100
541 Q1 Request for Approval under Licence Condition 23[5] of amendment to Nuclear Safety Requirements at Hunterston B Power Station

Low Level Waste Repository (LLWR) [Nuclear site licence 82]

LI no. Issued Title
N/A Q1 LLW Operations PSR

Magnox sites (Berkeley, Bradwell, Chapelcross, Dungeness A, Hinkley Point A, Hunterston A, Oldbury, Sizewell A, Trawsfynydd and Wylfa)

LI no. Issued Title
N/A Q3 Summary of the Magnox Ltd. Response to Lessons Learned from the March 2011 Japanese Earthquake and Tsunami
Crynodeb o Ymateb Magnox Ltd i’r Gwersi a Ddysgwyd o Ddaeargryn a Tswnami Japan ym Mawrth 2011
Various Q2 Request for Consent under Licence Condition 3(1) for property leases from NDA to Magnox Ltd
Asesiad o Brydlesi Newydd ar gyfer Safleoedd Magnox
Various Q1 Assessment of Proposal by Magnox Limited for Transition to a New Parent Body Organisation
Asesiad o Gynnig gan Magnox Limited ar gyfer Trosiad i Sefydliad Corff Rhiant Newydd

Oldbury [Nuclear site licence 57A]

LI no. Issued Title
548/549 Q1 Magnox Improved Arrangements for the control of maintenance under LC28 -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
547 Q1 Request for approval of amended site emergency plan
546 Q1 Magnox Limited LicenceCondition (LC) 36 (3) approved arrangements - Agreement to withdrawal of the Oldbury site specific approved arrangements for LC 36(3)

Rosyth [Nuclear site licence 8]

LI no. Issued Title
N/A Q4 Request for Permission to Conduct Decommissioning Project

Sellafield [Nuclear site licence 31G]

LI no. Issued Title
N/A Q3 First Generation Magnox Storage Pond Sludge Retrievals - Acknowledgement of Overarching Strategy Paper for FGMSP Sludge Stream
N/A Q3 Reduction in MOP Reservation Held on Evaporator C & Reallocation to Evaporator A & B
N/A Q3 Proposal to Erect Wind Turbines at Church House Farm, Calderbridge, Cumbria
N/A Q2 Fire safety enforcement
878 Q3 Fuel Handling Plant (FHP), Nuclear Safety Improvements to the Flask Maintenance Gamma Gate (FMGG) - Review of Sellafield Ltd’s request for extension of Improvement Notice (1/2013/ONR/MK/001) compliance date
875 Q3 Restriction on dealing with the site, Consent to a Property Transaction for [REDACTED] to Direct Rail Services Limited
874 Q3 LC3 Consent to a Request for a Sub-Lease of [REDACTED] at Sellafield Limited to the Nuclear Decommissioning Agency (NDA)
870 Q3 Restriction on dealing with the site, Consent to a Property Transaction for [REDACTED] to AMEC Nuclear UK Limited

Sizewell A [Nuclear site licence 96] & Sizewell B [Nuclear site licence 63]

LI no. Issued Title
N/A Q1 Sizewell REPPIR offsite emergency planning area
N/A Q1 Letter to Suffolk County Council
N/A Q1 Letter to the operstors - EDF Energy and Magnox Ltd
542 Q3 NP/SC 7575 SS3, dry fuel store: stage submission 3 – implementation modifications for fuel and container handling rev 001, fuel building crane control and protection system upgrade, EC No:340194 rev 001, proposal version No: 01
533 Q1 Storage Submission 2 - Commencement of Construction Dry Fuel Store Building

Springfields [Nuclear site licence 79]

LI no. Issued Title
522 Q1 Application for a Consent to a Licence to Occupy in respect of Advance Uranium Asset Management (AUAM) at the Springfields Site

Studsvik [Nuclear site licence 91]

LI no. Issued Title
508, 509 Q1 Stusdvik Metal Recycling Facility (MRF) Emegency Plan

Torness [Nuclear site licence 14]

LI no. Issued Title
535 Q1 EDF Energy Nuclear Generation Limited (NGL) - Torness Power Station - Consent under Licence Condition 30 (3) to start-up Reactor 1 following the 2014 periodic shutdown

Urenco [Nuclear Site Licence 48E]

LI no. Issued Title
N/A Q3 Issue of Ionising Radiations Regulations 1999 (IRR99) Exemption
534 & 535 Q3 Acknowledgement of Hydrogen Fluoride Processing and Storage and Cylinder Handling Facility safety cases Mechanical, Electrical and Instrumentation (ME&I) Installation, Tails Management Facility on the UUK Capenhurst Licensed Site
533 Q4 Acknowledgement of receipt of Legacy Cylinder Facility Preliminary Safety Report RP-CNS-LCF-SAFE-0071 Revision D May 2014

Winfrith [Nuclear site licence 58A]

LI no. Issued Title
519 Q3 Assessment of Proposal for Renewal of Lease for the B4 Complex,Winfrith to Inutec Ltd - Assessment of Leasing proposal
517 Q1 Assessment of Proposal by Research Sites Restoration Limited for Transition to a New Parent Body Organisation
515 Q1 Approval of the revised Site Emergency Plan

Wylfa [Nuclear site licence 85]

LI no. Issued Title
N/A Q3 ONR Assessment of the Wylfa Power Station Periodic Safety Review 2014-24
561 Q1 ONR Approval under LC23(5) – Approval of an Amendment to Operating Rule 5.6
Cymeradwyaeth ONR dan LC23(5) – Cymeradwyo Diwygiad i Weithredu Rheol 5.6
558 Q1 Licensee's Review of FE8/CGO Temperature Trip Margins - and their Proposal to Amend the Operating Rules and Reference Station Operating Instructions
Updated 2014-11-14