Powered by Lexis+®
Jurisdiction(s):
United Kingdom
CASE STUDY

“I'm able to do more in the day, which means I'm providing more value to my clients - and it's helped my margins in terms of how much I can bill. LexisNexis is helping me make money.”

ParrisWhittaker

Access all documents on Reference accident

Reference accident meaning

Published by a LexisNexis Energy expert
What does Reference accident mean?
In nuclear regulation, a “reference accident” describes the worst credible accident, selected from the range of reasonably foreseeable events at a reactor or other nuclear installation, that would result in the most significant off‑site release of radionuclides and public dose. The term is a descriptive expression used in UK and Irish regulatory practice and guidance rather than a current statutory definition. UK legislation (including REPPIR 2019) requires hazard evaluation and consequence assessment for reasonably foreseeable radiation emergencies; the reference accident is the scenario commonly used to represent the maximum credible source term for those assessments. Key features and use: - Identified through the operator’s safety case/safety assessment, drawing on deterministic and probabilistic analyses. - Sets the bounding “source term” and informs design basis and engineered/administrative controls (so far as is reasonably practicable). - Provides the basis for off‑site consequence modelling, protective actions and the determination of emergency planning zones and off‑site emergency plans. - Forms part of the evidence assessed by the ONR and the environment agencies; similar concepts are applied by the Irish EPA and emergency planners. Usage and practical approach are consistent across England & Wales, Scotland, Northern Ireland and Ireland.
Speed up all aspects of your legal work with tools that help you to work faster and smarter. Win cases, close deals and grow your business–all whilst saving time and reducing risk.

View the related News about Reference accident

NEWS
Debarring orders confined to rate do not bar impecuniosity on hire period: credit hire and storage claims in MIB v Houston [2025] EWHC 3178 (KB), England and Wales

Motor Insurers Bureau v Houston [2025] EWHC 3178 (KB) What are the practical implications of this case? Although the outcome may catch seasoned credit hire practitioners off guard, it was driven in large part by the precise language of the debarring order in this case. The order confined any future debarring strictly to the question of rate and made no reference to reliance on impecuniosity for the hire period or for any wider purposes; appellant counsel on appeal suggested this flowed from a legacy version of a standard form. Practitioners familiar with credit hire litigation will know that, more often than not, directions orders bar a claimant from reliance on impecuniosity for all purposes following a failure to provide financial disclosure. Even so, the judgment is a clear reminder that the courts will apply the ordinary and natural meaning to the words of any order, and practitioners should take care to verify the exact wording of a debarring order in every case. That is not, however, to suggest the...

Read More Right Arrow
NEWS
UK PI and Clinical Negligence update: JCG 18th edition, Mazur on delegated litigation, secondary victims post-Paul, restraint battery ruling, Scottish mesothelioma, driverless data access, product safety and RIDDOR consultations

PI & Clinical Negligence weekly highlights—9 April 2026 In this issue: Key PI & Clinical Negligence developments Road traffic accidents Psychiatric and occupational stress Public authorities and the state Product liability Scottish claims Other PI and Clinical Negligence news New content LexisNexis® Quantum Portal LexTalk®PI & Clinical Negligence: a Lexis®Nexis community Daily and weekly news alerts LexisNexis® Webinars Key PI & Clinical Negligence developments Eighteenth edition of the Judicial College Guidelines is published The 18th edition of the Judicial College Guidelines has now been released, following the 17th in 2024. It remains the primary reference for practitioners and courts when assessing general damages in personal injury and clinical negligence claims. The figures have been adjusted for inflation, by reference to the Retail Prices Index as at August 2025. See: LNB News 09/04/2026 4. The latest chapter in Mazur—prayers answered and questions unanswered In Mazur v Charles Russell Speechlys...

Read More Right Arrow
NEWS
Irish High Court: failure to call GP witnesses and lack of early records fatal to causation; RTA shoulder injury claim dismissed

A personal injuries action stemming from a 2016 road traffic collision has been thrown out by the High Court. In Dalyv Ryans Investments Ltd T/A Hertz [2024] IEHC 703, the judge placed significant weight on the plaintiff’s choice not to call her treating GPs, as well as the GP whose report was submitted to the Personal Injuries Resolution Board (PIAB), to give evidence in reaching its conclusion. Background Liability for the crash was accepted by the defendant, whose car struck the passenger side of the plaintiff’s vehicle at a roundabout. She alleged a right shoulder injury from the impact and said she reported pain to her GP within a few days of the accident. Ongoing symptoms, she contended, culminated in surgery in 2022. The defence maintained the shoulder condition was not caused by the accident, asserting instead that it was unconnected. The medical notes contained no reference to right shoulder symptoms until ten months post‑accident and, thereafter, when that shoulder was being treated, neither a 2017 GP referral...

Read More Right Arrow

View the related Practice Notes about Reference accident

PRACTICE NOTES
Bus Accident Litigation: Duty of Care, Highway Code/DVSA Standards, Foreseeability, Contributory Negligence and Evidence in Pedestrian, Cyclist, Motorcyclist and Passenger Cases

The nature of the duty owed by bus drivers A bus driver owes the same duty to fellow road users, including passengers, as any other driver: to drive with the reasonable care and skill of a competent motorist. That competence must be evaluated in context, particularly for those operating buses, by reference to: the Highway Code the Driver and Vehicle Standards Agency's Official DVSA Guide to Driving Buses and Coaches Only with such a measured assessment of the duty of care can there be a meaningful decision on whether that duty has been breached. The County Court case of Kevin Graham v Go North East Limited (20 November 2017) (not reported by LexisNexis®) illustrates the delicate balance when applying this duty. A defendant bus driver collided with the claimant's vehicle at a crossroads controlled by traffic lights. He proceeded through a changing signal because he believed that not doing so, and braking, would endanger his passengers. The judge recognised the 'split...

Read More Right Arrow
PRACTICE NOTES
UK personal injury and clinical negligence update: key cases, costs, whiplash review, product liability and CPR changes—March 2026

This Practice Note summarises the principal legal updates relevant to personal injury and clinical negligence practitioners as at 2 March 2026, aimed at assisting current practice. For earlier developments, see PI and Clinical Negligence horizon scanning and key cases—overview. Key PI & clinical negligence developments Eighteenth edition of the Judicial College Guidelines due The 18th edition of the Judicial College Guidelines (JCG) will be released on 9 April 2026. The Lexis+® UK PI & Clinical Negligence team will refresh the JCG link within our Key Resources on the Lexis+® UK PI & Clinical Negligence homepage, together with all connected materials. Law Society publishes practice note on conduct of litigation following Mazur v Charles Russell Speechlys Following the High Court’s decision in Mazur v Charles Russell Speechlys [2025] EWHC 2341 (KB), the Law Society has issued guidance for solicitors, law firms and legal businesses to ensure that only individuals authorised under the Legal Services Act 2007 undertake the conduct of litigation...

Read More Right Arrow
PRACTICE NOTES
2019 civil litigation appeals tracker: key UK appellate courts and CJEU decisions, plus forthcoming appeals

ARCHIVED: This Practice Note has been archived and is not maintained Keeping abreast of case law that shapes a practitioner’s specialism, or influences civil litigation procedure generally, is a persistent challenge for those working in dispute resolution. This Practice Note distils the leading appeal authorities—decisions of the Court of Appeal and Supreme Court, and, where relevant, selected judgments of the Court of Justice of the European Union (CJEU)—that we have reported, giving users straightforward access to those rulings. Use the table of contents in the left margin to browse, or locate items quickly with [CTRL]+[F]. It also sets out a selection of forthcoming appeals, where known, to aid horizon scanning. The material is not intended to be a comprehensive catalogue of every appeal and/or significant decision for dispute resolution practitioners. Key forthcoming appeal cases—2019 Terminating contracts—frustration Canary Wharf (BP4) T1 Ltd v European Medicines Agency [2019] EWHC 921 (Ch)—Court of Appeal: permission to appeal granted in the lower court...

Read More Right Arrow

View the related Precedents about Reference accident

PRECEDENTS
Template CPR 35 Letter of Instruction to a Personal Injury Medical Expert, including Remote Examination, AI, Budgeting and Expert Duties (England and Wales)

Dear [ insert expert’s name ] Re: [ insert name of client and the client’s date of birth (address and telephone number should be provided separately for the appointment arrangements) ] Date of accident: [ insert date of accident ] Thank you for consenting to prepare a report in this matter. We represent the above individual regarding injuries sustained in an accident that took place on the date noted above. Documentation To aid the preparation of your report, we enclose the following documents: [ list documents enclosed with instructions eg GP records, ambulance, hospital records, etc ] [ We are in the process of obtaining our client’s GP, ambulance service and hospital notes and records and will send them to you once received. OR We enclose an agreed, indexed and paginated set of notes and records prepared with the Defendants. ] Your instructions We would be grateful if you could examine our client and produce a comprehensive report covering any pertinent pre-accident...

Read More Right Arrow
PRECEDENTS
Homeworking Guidance for Staff: Practical Compliance on Health and Safety (DSE), Sickness Reporting, Information Security, Equipment, Breaks, Communication, Training and Wellbeing

These guidelines set out practical advice and pointers to support you when working from home. Please also consult our separate Homeworking policy for further detail and reference. Keeping in touch We actively encourage all colleagues to stay in frequent contact with homeworkers, and in particular for managers and the people they supervise to arrange regular catch-ups. These catch-ups should take place regularly by mutual arrangement. The preferred method of contact should be mutually agreed, eg by email, video call and/or telephone. Wherever feasible, please make use of [ insert details of any company-provided messaging software, eg Microsoft Teams, OR available technology ] to hold face-to-face, video-based conversations. Both parties share responsibility for maintaining communication with one another at all times. Reporting sickness or injury Homeworkers must follow our usual sickness absence reporting procedures at all times. Please see our [ insert eg, sickness and attendance policy ]. If you encounter any health and safety issues whilst working at home, you must inform your line manager at...

Read More Right Arrow