№ lp_1_2_41009
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Regulatory assessment report by the national nuclear regulator evaluating examination, inspection, maintenance and testing undertaken during the 2023 periodic shutdown of Heysham 1 Reactor 1 to support consent for reactor start-up.
Publication date:
February 2024
Year:
2024
Facility:
Heysham 1 Nuclear Power Station
Reactor type:
Advanced Gas-Cooled Reactor
Reactor unit:
Reactor 1
Periodic shutdown identifier:
027
Shutdown period:
October–December 2023
Planned shutdown duration:
69 days
Document type:
Regulatory assessment report
Issuing authority:
Office for Nuclear Regulation
Dutyholder:
EDF Energy Nuclear Generation Limited
Regulatory framework:
Nuclear Site Licence Conditions 28 and 30
Subject areas:
Nuclear safety, examination, inspection, maintenance and testing
Licence instrument referenced:
Licence Instrument 641
Geographic location:
United Kingdom
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Year:
2025
Region / City:
Heysham
Topic:
Nuclear energy, reactor maintenance, shutdown deferral
Document type:
Project assessment report
Organization / Institution:
Office for Nuclear Regulation
Author:
Not specified
Target audience:
Not specified
Period of validity:
Up to 06 October 2025
Approval date:
May 2025
Date of changes:
None
Year:
2024
Region / City:
Heysham
Topic:
Nuclear Regulatory Inspection
Document Type:
Site Report
Organization / Institution:
Office for Nuclear Regulation (ONR)
Author:
Nominated Site Inspector - Heysham 1
Target Audience:
General public, Heysham Local Community Liaison Committee (LCLC)
Period of Action:
01 October – 31 December 2024
Approval Date:
February 2025
Date of Last Update:
Not specified
Year:
2025
Region / City:
Heysham, Lancashire, UK
Document type:
Site inspection report
Organization:
Office for Nuclear Regulation (ONR)
Author:
Nominated Site Inspector
Approved by:
Joint Head of Safety Regulation – Operating Reactors
Reporting period:
1 January – 31 March 2025
Publication date:
April 2025
Record reference:
2025/14825
Inspections:
Heysham 1, Heysham 2
Legal frameworks referenced:
Nuclear Installations Act 1965, Energy Act 2013, Health and Safety at Work Act 1974, Ionising Radiations Regulations 2017, Management of Health and Safety at Work Regulations 1999
Key activities:
Routine inspections, non-routine inspections, regulatory assessments, emergency exercise observation
Year:
2025
Region / City:
Heysham
Topic:
Nuclear power station inspection
Document Type:
Regulatory Report
Organization:
Office for Nuclear Regulation (ONR)
Author:
Heysham 2 Nominated Site Inspector
Target Audience:
Local community, industry stakeholders, regulatory bodies
Effective Period:
1 July – 30 September 2025
Approval Date:
Nov 2025
Date of Changes:
N/A
Year:
2024
Region / City:
Heysham
Topic:
Nuclear Site Inspections
Document Type:
Site Report
Organization / Institution:
Office for Nuclear Regulation (ONR)
Author:
M Worsley, D Hackney, M Webb
Target Audience:
Public, Local Community Liaison Committee
Period of Activity:
1 January to 31 March 2024
Approval Date:
May 2024
Date of Changes:
N/A
Year:
2024
Region / City:
Heysham
Topic:
Nuclear site inspections, regulatory activities
Document Type:
Site Report
Organization:
Office for Nuclear Regulation (ONR)
Author:
Heysham 1 and 2 Nominated Site Inspectors
Target Audience:
General public, local community liaison committee members, regulatory stakeholders
Period of Action:
1 April to 30 June 2024
Approval Date:
August 24, 2024
Date of Last Update:
August 24, 2024
Year:
2022
Region / City:
Heysham
Subject:
Nuclear Site Inspection
Document Type:
Report
Author:
Office for Nuclear Regulation (ONR)
Target Audience:
General Public, Local Community Liaison Committee (LCLC)
Period of Activity:
1 October – 31 December 2022
Approval Date:
April 2023
Date of Changes:
N/A
Year:
2025
Region:
Heysham, United Kingdom
Subject:
Nuclear site inspections and regulatory compliance
Document type:
Site report
Organization:
Office for Nuclear Regulation (ONR)
Author:
Heysham 1 Nominated Site Inspector
Approved by:
Head of Regulation (Operating Reactors)
Publication date:
July 2025
Report period:
01 April – 30 June 2025
Record reference:
2025/25014
Inspections:
Routine and themed inspections of Heysham 1 and 2, including emergency exercises and engineering change management
Compliance frameworks:
Nuclear Installations Act 1965, Energy Act 2013, Health and Safety at Work etc Act 1974, IRR17, MHSWR99
Inspection ratings:
GREEN (no formal action)
Emergency exercises:
Atlas (Heysham 1), Athena (Heysham 2)
Training and qualifications:
Verified for key emergency roles
Waste management:
Radiological waste accumulation and disposal compliance
Year:
2024
Region / City:
United Kingdom
Topic:
Holiday pay, employee benefits
Document type:
Guidelines
Organization:
ECA
Author:
ECA
Target Audience:
Employers, JIB operatives
Effective period:
December 2024 - January 2025
Approval date:
Not specified
Amendment date:
Not specified
Contextual description:
Guidelines for employers on holiday shutdown, pay rates, and allowances for JIB operatives during the Christmas period.
Effective Date:
01/01/2021
Year:
2021
Note:
Region / city
Subject:
Occupational Radiation Exposure
Document Type:
Inspection Procedure
Organization:
NRC
Target Audience:
Inspectors, Licensees
Approval Date:
01/01/2021
Year:
2025
Region / city:
Massachusetts
Topic:
Financial hardship, eviction, federal government shutdown
Document type:
Notice and certification
Organization / institution:
Massachusetts government
Author:
Massachusetts State Government
Target audience:
Federal workers, tenants in Massachusetts
Period of validity:
Indefinite
Approval date:
November 25, 2025
Date of changes:
Not specified
Effective Date:
10/16/2023
Note:
Region / city
Year:
N/A
Region / city:
N/A
Topic:
Power system, wind energy, inverter systems
Document type:
Technical specification
Organization:
N/A
Author:
N/A
Target audience:
Engineers, power system designers
Effective period:
N/A
Approval date:
N/A
Date of amendments:
N/A
Year:
2022
Region / City:
Argonne, Illinois
Theme:
Power Shutdown, Safety, Operations
Document Type:
Internal Operations Document
Organization / Institution:
Argonne National Laboratory
Author:
Not specified
Target Audience:
APS staff, engineers, and project managers
Period of Action:
January 2023
Approval Date:
Not specified
Date of Changes:
Not specified
Note:
Contextual Description
Year:
2024
Region / City:
Torness Nuclear Power Station
Subject:
Nuclear Reactor Start-Up Consent
Document Type:
Project Assessment Report
Organization / Institution:
Office for Nuclear Regulation (ONR)
Author:
EDF Energy Nuclear Generation Limited
Target Audience:
Regulatory Authorities, Nuclear Industry Professionals
Period of Effect:
2024
Approval Date:
Not specified
Date of Changes:
Not specified
Contextual description:
Project assessment report on the consent process for the start-up of Torness Reactor 1 after its 2024 periodic shutdown, focusing on inspection and compliance with safety standards.
Year:
2023
Region / City:
Argonne National Laboratory
Theme:
Safety, Operational Planning, Equipment Maintenance
Document Type:
Internal Memo
Organization / Institution:
Argonne National Laboratory
Author:
Multiple Staff Members
Target Audience:
APS Staff
Period of Validity:
December 2022 - February 2023
Approval Date:
Not Specified
Date of Changes:
Ongoing
Event Date:
January 31, 2023
Safety Update:
Ongoing
Context:
A detailed internal memo regarding vacation schedules, operational shutdowns, safety updates, and equipment maintenance plans at the Argonne National Laboratory, specifically for the APS staff.
Year:
2021
Date Range:
August 2–8, 2021
Organization:
Advanced Photon Source (APS)
Location:
Argonne National Laboratory
Document Type:
Weekly operations report and shutdown planning update
Operational Status:
Limited Operations+
Onsite Presence Schedule:
August 2–8, 2021 (Mon–Fri)
Shutdown Period:
2021-2 Supplemental Time Shutdown
Power Shutdown Dates:
August 5, 2021; August 10, 2021
Affected Beamline Sectors:
12–23; 24–35; 18–27
Key Topics:
Safety monitoring, beamline maintenance, construction updates, power shutdown coordination, PSS validations, LNDS Module C installation
Supervising Engineer (Focusing Mirror Installation 9BM):
Mike Fisher
Contractors Mentioned:
Meade; Power Construction
Completion Milestones:
437 build-out expected Feb/Mar 2022; 25-ID laser control room by end of 2021
Year:
Not specified
State:
North Carolina
Country:
United States
Regulatory Framework:
Revised Total Coliform Rule [15A NCAC 18C Section .1539 (§141.854(i)(1); §141.860(b)(2)]
Document Type:
Regulatory compliance checklist and certification form
Issuing Authority:
Public Water Supply Section
Applicable To:
Seasonal public water systems not fully pressurized during the off-season
Water System Name:
SOUTHWEST PARK
Water System Number:
NC3041094
Subject:
Start-up, shutdown, disinfection, flushing, monitoring, and certification requirements
Compliance Requirement:
Annual completion and submission prior to serving water to the public
Submission Methods:
Mail, Email, Fax
Referenced Standards:
AWWA Standards C654, C652, C651
Author:
Lori Montgomery
Publication Date:
October 6
Type of Document:
Newspaper article
Genre:
Political news report
Subject:
U.S. government shutdown and federal debt limit standoff
Key Figures:
John A. Boehner; Barack Obama; Jack Lew; Nancy Vanden Houten; Ted Cruz; Paul Ryan; Dave Camp
Institutions Mentioned:
U.S. House of Representatives; White House; U.S. Treasury Department
Geographic Focus:
United States; Washington, D.C.
Economic Context:
$16.7 trillion federal debt limit; potential default deadlines of October 17 and early November
Themes:
Budget negotiations; partisan conflict; risk of sovereign default; federal payments and interest obligations
Year:
2025
Region / City:
Massachusetts
Topic:
SNAP benefits, federal shutdown, food assistance
Document Type:
Informational
Institution:
DTA (Department of Transitional Assistance)
Author:
Massachusetts Department of Transitional Assistance
Target Audience:
SNAP recipients, low-income residents, healthcare providers
Period of Validity:
November 2025
Approval Date:
October 2025
Modification Date:
N/A