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Cs meaning

Published by a LexisNexis Energy expert
What does Cs mean?
Cs is the scientific symbol for caesium. In legal practice it appears in permits, safety cases and technical schedules to identify caesium and its radionuclides (most notably caesium‑137), a common fission product of uranium‑235. The symbol itself is not defined in legislation; however, specific caesium isotopes are listed in regulatory schedules (for example, for activity limits, clearance and exemption levels) under UK and Irish radiation protection and radioactive substances regimes. Key uses include: classification and control of radioactive material and waste; setting discharge and monitoring limits at nuclear and non‑nuclear sites; contaminated land and foodchain assessments; incident response involving sealed sources; and transport and record‑keeping requirements. Cs‑137 is significant due to its gamma emissions and environmental persistence, so it commonly features in dose assessments and decommissioning plans. Usage of “Cs” is consistent across England and Wales, Scotland, Northern Ireland and Ireland, though the regulatory frameworks and competent authorities differ (for example, ONR and the environmental agencies in the UK; the EPA in Ireland). Practitioners should read “Cs” contextually by reference to the specific isotope and activity stated in the relevant instrument or schedule.
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View the related Checklists about Cs

CHECKLISTS
UK online advertising T&Cs: lawyers' checklist for reviewing publisher-advertiser (Programmatic Direct) deals, including impressions, makegoods, pricing models, brand safety, data protection (UK GDPR/DPA/PECR), liability and termination.

Checklist Use this Checklist when assessing online advertising terms and conditions, where a publisher (the owner of a website, app or other digital platform) sells advertising space on its platforms to advertisers (brands or advertising/media buying agencies acting for those brands) on a direct basis (Programmatic Direct). Where appropriate, this Checklist may operate as the starting point for straightforward, non-binding heads of terms. For direction on preparing these, see Precedent: Heads of terms—commercial contracts. For a specimen set of a publisher’s standard terms, see Precedent: Online advertising terms and conditions. As you work through the Checklist, the third column can be used to note observations or comments. Employ it to record notes while progressing through each item. Further information Notes (if any) Parties ☐ Verify each party’s legal status and whether the advertiser will contract in its own capacity or via an advertising agency. In some situations an advertiser will enter into the agreement itself; in others, it may appoint an...

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FLOWCHARTS
B2B Supply of Goods: Flowchart to Select Appropriate Agreement or T&Cs, with At‑a‑Glance Drafting Bias, Format, Supply Basis, Data Processing, Exclusivity and Forecast Provisions

Flowchart This Flowchart serves as a guide to identifying which Precedent agreement for the supply of goods is the most suitable to adopt in a particular situation. A quick-reference, at-a-glance table also summarises the key underlying drafting assumptions within each of the Precedent agreements, providing an alternative way to determine the most appropriate Precedent for use in a given situation. Both the Flowchart and its companion table consider business to business (B2B) Precedent options only...

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NEWS
EU law weekly: elections outlook; Clearview GDPR fine; renewable energy and ETS updates; ESRS taxonomy; fund classifications; CJEU Illumina ruling; clinical trials, IVD amendments and paediatric E11A

In this issue: EU fundamentals Data protection Energy Environment Financial services Life sciences LexTalk®EU Law: a Lexis®Nexis community Daily and weekly news alerts New and updated content Trackers EU fundamentals European elections—what’s next? From 6–9 June 2024, EU citizens headed to the polls to choose the tenth European Parliament. After negotiations on group line-ups—featuring parties changing blocs and several previously non-aligned MEPs joining political groups—the make-up of the 2024–2029 Parliament is now apparent. As forecast, the chamber has moved to the right. But what does that entail? Lavan Thasarathakumar, senior adviser at Hogan Lovells, has contributed to this assessment. See News Analysis: European elections—what’s next? Data protection Dutch DPA fines Clearview €30.5m for violations of EU GDPR The European Data Protection Board announced that the Dutch Data Protection Authority (DPA) has issued a €30.5m fine to Clearview AI Inc for infringing multiple provisions of the EU’s General Data Protection Regulation,...

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NEWS
UK and EU energy law and regulation weekly update—Ofgem RIIO‑3, cost recovery review, NESO connections reforms, CfD AR7 terms, Capacity Market CP388, planning judgment—31 July 2025

In this issue: Key developments and materials Electricity and gas market regulation and licensing Networks and network connections Renewable energy Capacity Market, balancing services and energy system Planning issues in energy projects International energy Daily and weekly news alerts New and updated content Dates for your diary Key developments and materials Access secured to six market-leading energy law titles We are pleased to confirm that we have recently broadened our Lexis+ Legal Research service significantly by obtaining an exclusive licence from Globe Law and Business to host six market-leading energy law titles. We are presently integrating links to these works currently within the relevant Practical Guidance located in the Energy module on Lexis+...

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NEWS
Ofcom’s UK studies on consumer T&Cs and video‑sharing platform policies: why users don’t read them and practical design steps to improve readability and engagement

Commercial analysis: Ofcom recently commissioned research to determine whether consumers read terms and conditions and, if they do not, what organisations could introduce to boost engagement levels...

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PRACTICE NOTES
UK CCUS Regulatory Framework: Storage Licences and Permits, Ofgem Transport and Storage Economic Licences, Environmental Permitting and Post-closure Duties

For comprehensive analysis of the regulation, consenting and incentivisation of the net zero energy transition under the laws of England and Wales, see also: Collinson and Hockman on Energy Law: Regulating, Consenting and Incentivising the Energy Transition. That textbook offers an in-depth exploration of matters addressed in this Practice Note. What is carbon capture, usage and storage (CCUS)? The term CCUS is sometimes described as ‘carbon capture and storage’ (CCS); broadly, CCS represents a narrower subset within the same sector. CCS describes a range of processes that capture and store CO 2 emissions from industrial activities...

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PRACTICE NOTES
A Lawyers’ Guide to Designing, Running and Governing Hackathons: IP, Data Protection, AI, Open Source, T&Cs, Inclusion, Sponsorship, Partnerships and Post-Event Commercialisation

What is a hackathon? A hackathon is usually a 12–48-hour sprint where multidisciplinary teams—coders, developers, strategists, data scientists, subject-matter specialists and innovators—work intensively to tackle a defined problem in a short window. The aim is to generate fresh concepts, tools or platforms, often ending with a functional prototype or a concept pitch. They trace their lineage to tech culture: the first officially recognised hackathon took place in 1999 in Calgary, though collaborative meet-ups go back to the 1970s with groups such as the Homebrew Computer Group, where the first Apple computer was unveiled. Today, hackathons cut across many sectors and goals, and are not exclusively technology-focused. The author once ran an inspiring game jam—a game development focussed hackathon—designed to speed up cancer cures by turning cancer data analysis into gameplay, delivering scientifically robust outputs thanks to watertight algorithms. Whatever the topic, the core principles and structure are largely consistent. In law, they are increasingly used to drive innovation, widen access to justice, and connect with legal...

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PRACTICE NOTES
German commercial contracts: B2B practitioner Q&A on drafting, T&Cs control, liability caps, termination, insolvency, force majeure, limitation, payment terms and interest, dispute resolution, and COVID-19 measures (2022)

Commercial contracts—Germany—Q&A guide [Archived, 2022 edition] This Practice Note offers a jurisdiction-specific Q&A overview of commercial contracts in Germany, issued as part of the Lexology Getting the Deal Through series by Law Business Research (published: January 2022). Authors: Lutz Abel Rechtsanwalts PartG mbB—Marius Mann; Benjamin Baisch; Björn Weidehaas 1. Is there an obligation to use good faith when negotiating a contract? Yes. Good faith is set out in section 242 of the German Civil Code (BGB) and is a basic tenet of German law. It imposes a duty on both contracting parties to fulfil their obligations faithfully and sincerely, taking customary practice into account. Nevertheless, where there is no breach of specific provisions of the BGB or the German Commercial Code (HGB), enforcing a claim that relies solely on the general clause in section 242 BGB is generally difficult. The principle is fleshed out, for example, in section 138 BGB (no legal transaction contrary to public policy; no usury) and in section 307 et seq BGB (no...

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PRECEDENTS
UK GDPR/DPA 2018 (as amended by DUAA 2025): Consent wording templates for T&Cs confirmation, service updates, marketing (including third-party sharing) and specific processing

STOP PRESS: We are revising this document to align with the coming into force of the Data (Use and Access) Act 2025 (DUAA 2025), which modifies the UK GDPR and the Data Protection Act 2018. For further help on the compliance implications of DUAA 2025, refer to Practice Note: Data (Use and Access) Act 2025—compliance implications. 1 Consent to terms and conditions—not data processing consent [ Insert the terms and conditions for which you are requesting consent, eg your T&Cs in relation to the product/service you are providing ] Please confirm that you have read and accepted these terms and conditions [ before proceeding ]. [ You are required to accept the terms and conditions [ state reason, eg to continue with your purchase ]. ] ☐ I agree to these [ [ insert description, eg Retail ] ] terms and conditions 2 Mailing list consent—not marketing We would like to provide you with [ occasional ] news and...

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Q&As
Adjudicator resigns for valid jurisdictional challenge: fees—who pays?

Disputes regarding liability for an adjudicator’s fees and expenses Such disputes often present intricate issues, and comparatively few judgments explore them in depth. From the outset, parties to adjudication should keep in mind two dimensions of their exposure for the adjudicator’s fees: their liability to the adjudicator; and their liability to one another. In the majority of matters, where the adjudication follows its usual path and an enforceable decision is issued: the parties’ liability to each other is decided by the adjudicator within the award. The adjudicator generally has discretion to apportion their own fees as they see fit. Commonly, the losing party is directed to pay all, or a greater proportion, of those fees the parties’ liability to the adjudicator is governed by the contract made with the adjudicator. That agreement may rest on bespoke terms and conditions (T&Cs) provided by the adjudicator or, where no T&Cs are supplied, on implied terms arising from a contract formed...

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Q&As
Is A–C reserved right of access enough for B’s boundary repairs?

This could be the appropriate method to secure lawfully an access right from B’s property across C’s property...

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Q&As
Statutory recognition in T&Cs bargaining: continue with employee reps?

Trade union recognition An employer can recognise a trade union for a number of different purposes, and at a variety of different levels. Where negotiating rights exist at the highest tier of recognition, any decisions on subjects within those rights must be settled jointly by the employer and the union, and cannot be taken by the employer alone, acting unilaterally. This is commonly described as recognition for collective bargaining. For further information, see Practice Note: Trade union recognition, within the main section covering ‘Recognition for collective bargaining’. An employer may: recognise a trade union wholly on a voluntary basis (voluntary recognition) be required to recognise the union by the Central Arbitration Committee (CAC) under the statutory recognition procedure (see Practice Note: Reference to Central Arbitration Committee), or recognise it on a semi-voluntary basis as part of the statutory recognition procedure (see Practice Note: Reference to Central Arbitration Committee, within the main section addressing ‘Voluntary recognition following request for statutory recognition’) ...

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