Sellafield Ltd

For this week’s #FutureFriday, we’re continuing our Windscale theme with a closer look at SPIDA - the Suspended Platform with Incremental Descent, developed through the ADAPT collaborative partnership. This machine is helping us tackle one of our most complex decommissioning challenges: the demolition of the Windscale Pile 1 chimney. But SPIDA isn’t just a machine. It’s a symbol of innovation, collaboration, and rigorous testing. With over 60,000 individual components, SPIDA is a feat of engineering. Designed to ‘walk’ down the chimney as it’s dismantled, this doughnut-shaped hydraulic platform will play a key role in safely reducing the height of the chimney barrel. Just up the road, out of public view, a full-scale replica chimney has been built. Here, teams from Sellafield Ltd and our ADAPT partners - including engineers, designers, and technical specialists - are trialling and testing every aspect of the SPIDA system. These trials are laying the groundwork for the future. Once testing is complete, SPIDA will be deployed on the Sellafield site - bringing cutting-edge innovation and collaborative expertise to bear on one of the UK’s most iconic nuclear structures. It’s a glimpse into how we’re shaping the future of decommissioning through smart engineering and partnership. Next week, we’ll be sharing a deeper dive into SPIDA’s development journey. Stay tuned to find out how collaboration and innovation are driving progress at Sellafield. 👷♀️🔧 #InnovationInDecommissioning #EngineeringExcellence #CollaborationInAction #ADAPT #SellafieldLtd #Windscale #Sellafield #Nuclear #Decommissioning #NuclearDecommissioning #FutureFocused #SPIDA #TestingAndTrialling #UKEngineering ADAPT- Orano Altrad Babcock Atkins Realis AtkinsRéalis Altrad Babcock Orano Limited

🌟 Celebrating talent at Sellafield! 🌟 We’re proud to share that two of our colleagues, Omal Jayawardena and Rutendo Madhlambudzi, were honoured at the Young Generation Network (YGN) Annual Seminar in Edinburgh this week. A flagship event that brought together over 650 young professionals from across the nuclear industry. Omal, a strategy and technical advisor, received the YGN Excellence Prize for his outstanding contributions to innovation and mentoring. From launching the Young Generation International Network to leading the Innovate for Nuclear UK Competition, Omal continues to represent Sellafield Ltd and YGN on European platforms. Rutendo, a technical advisor, won the Chain Reaction Early Careers Competition with a creative and inspiring presentation aimed at future chemists. “I love creating content outside of work,” she shared. “I wanted to show that nuclear offers many paths for chemists beyond the lab — like nuclear medicine.” Alyson Armett, our strategy and planning director, spoke on the future of decommissioning at the event and our robotics team showcased cutting-edge innovations that are making work safer, faster, and more cost-effective on the Sellafield site. Looking ahead to 2026, our YGN leaders at Sellafield continue to shine: 👏Omal joins the European Nuclear Society YGN Board 👏Evie Smith becomes Vice-Chair of the YGN National Strategic Committee 👏Lucy Jarvis continues her role as Industry Liaison We’re proud to support and celebrate our colleagues who are making a difference. 👏 From left to right: Rutendo, Alyson, Evie, Lucy and Omal. #YGN #NuclearFuture #EarlyCareers #Innovation #Leadership #STEM #sellafieldLtd #nuclearskills #Sellafield #proudsellafield #nuclear Nuclear Institute Young Generation Network

Today the NDA group presented at a dedicated session of the All-Party Parliamentary Group on Nuclear Energy, focused on the UK’s decommissioning sector. Charlotte Nichols MP, Paul Vallance (NDA Group Chief Corporate Affairs Officer), Euan Hutton (Sellafield Ltd CEO), and Seth Kybird (Nuclear Waste Services CEO) highlighted the vital role decommissioning plays in the nuclear lifecycle, not as an end, but as an enabler of new nuclear. ✅ Decommissioning is not in decline. Our mission is growing, we're: • supporting 19,000 employees across the UK — 30% of the UK’s civil nuclear workforce. • underpinning the secure energy transition by managing spent fuel from EDF stations. • preparing for 8 future missions, including 7 EDF AGR sites and the MoD’s Vulcan site. • delivering major investment and long-term skilled jobs through the plutonium immobilisation programme at Sellafield. • advancing the Geological Disposal Facility (GDF), a 175-year programme creating 4,000 jobs in the first 25 years and 2,000 annually once operational. 💼 The NDA group economic impact includes: • £2.27bn spent with ~5,000 UK suppliers — 38% are SMEs. • Supporting 40,000 indirect jobs and reaching 83% of UK constituencies. • Investing £45m annually in early careers, with over 1,100 apprentices and graduates trained since 2005 — and 500+ joining in 2025.

This week, we've journeyed through the remarkable history of the Windscale facilities — the birthplace of pioneering nuclear innovation in Britain (scroll down our page if you've missed it!) 👇 For today's Throwback Thursday, we've turned the spotlight to the people whose expertise, dedication, and vision shaped decades of progress on the Sellafield site. From the early scientists and engineers who laid the foundations, to more recent generations of skilled professionals, who’ve paved the way for nuclear decommissioning and kept innovation thriving — Windscale has always been more than just buildings and reactors. It’s a story of nuclear excellence, and of a proud nuclear history! 📷 Windscale Control Room - daily log 📷 The Pile Fuel Cladding Silo - wall survey 📷 The Pile Fuel Storage Pond - Decanner Cell 📷 The First Generation Reprocessing Plant - HASO Cell Share your memories, stories, or archive photos from your time in the Windscale facilities. 👇 #UkNuclear #NuclearInnovation #Skills #Sellafield #TT #nuclearskills #SellafieldLtd #throwbackthursday

Swipe to see our Windscale facilities today ➡️ At Sellafield Ltd, we’re making significant progress in decommissioning the original Windscale facilities - once at the heart of the UK’s national defence programme. Highlights include: ✅ Removal of the 125m Windscale Pile Chimney 2 ✅ Deployment of robotics and human divers in the Pile Fuel Storage Pond ✅ Installation of 12-tonne steel doors and retrieval machinery in the Pile Fuel Cladding Silo ✅ Safe removal of 52 metres of ventilation stack from the First Generation Reprocessing Plant These achievements reflect the dedication, innovation, and collaboration across our teams and supply chain driving our mission to make Sellafield safer, sooner. Find out more about our progress in decommissioning the oldest facilities on the Sellafield site by clicking the link in the comments below 👇 #SellafieldLtd #NuclearDecommissioning #EngineeringInnovation #CleanUpProgress #Nuclear #WasteManagement #Decommissioning #RadiologicalSafety #NuclearCleanup #SafeDecommissioning #HazardReduction #Sellafield #NuclearIndustry #UKNuclear

“Our job at Sellafield is to create a clean and safe environment for future generations… new Infrastructure Delivery Partnership (IDP) is a long-term strategic partnership designed to provide that support while unlocking investment and opportunities for our local community and delivering sustainable value for money to the taxpayer.” - James Riddick, our chief supply chain officer. Following the announcement of our new Infrastructure Delivery Partnership (IDP), we’re turning our focus to delivery and the long-term value this partnership will create. Through IDP, we’re establishing a delivery model built on collaboration, resilience, and innovation. This will ensure the infrastructure that supports our mission is robust, future-ready, and cost-effective. We’re proud to welcome our new partners and look forward to working together. To read more about the new partnership, click the link in the comments below ⬇️ Costain Group PLC HOCHTIEF (UK) Construction Ltd Morgan Sindall Infrastructure #Leadership #SellafieldStrategy #SocialImpact #InfrastructureDeliveryPartnership #Decommissioning #ValueforMoney #Skills #SocialImpact #Sellafield #Nuclear

Today the NDA group presented at a dedicated session of the All-Party Parliamentary Group on Nuclear Energy, focused on the UK’s decommissioning sector. Charlotte Nichols MP, Paul Vallance (NDA Group Chief Corporate Affairs Officer), Euan Hutton (Sellafield Ltd CEO), and Seth Kybird (Nuclear Waste Services CEO) highlighted the vital role decommissioning plays in the nuclear lifecycle, not as an end, but as an enabler of new nuclear. ✅ Decommissioning is not in decline. Our mission is growing, we're: • supporting 19,000 employees across the UK — 30% of the UK’s civil nuclear workforce. • underpinning the secure energy transition by managing spent fuel from EDF stations. • preparing for 8 future missions, including 7 EDF AGR sites and the MoD’s Vulcan site. • delivering major investment and long-term skilled jobs through the plutonium immobilisation programme at Sellafield. • advancing the Geological Disposal Facility (GDF), a 175-year programme creating 4,000 jobs in the first 25 years and 2,000 annually once operational. 💼 The NDA group economic impact includes: • £2.27bn spent with ~5,000 UK suppliers — 38% are SMEs. • Supporting 40,000 indirect jobs and reaching 83% of UK constituencies. • Investing £45m annually in early careers, with over 1,100 apprentices and graduates trained since 2005 — and 500+ joining in 2025.

Swipe to explore how our original purpose shaped the Sellafield site's evolution and the UK’s nuclear journey ➡️ Sellafield’s legacy began with a national mission: supporting the UK’s defence strategy through the production of nuclear materials for the atomic weapons programme. This work started in the late 1940s/early 1950s at Windscale - a pioneering collection of nuclear facilities that laid the foundation for decades of scientific advancement. That pioneering spirit continues, but today our brilliant people and supply chain partners have a different challenge – how do we safely decommission these legacy facilities? Keep your eyes peeled for our post tomorrow about how we are progressing with that mission. To read more about our oldest facilities on the Sellafield site, click the link in the comments below ⬇️ #Nuclear #Sellafield #Windscale #lookback #nucleardecommissioning #SellafieldStory #NuclearHistory #NuclearDecommissioning #WasteManagement #NuclearCleanup #UKNuclear #NuclearInnovation

🔍 What is the Infrastructure Delivery Partnership (IDP)? Swipe to find out ➡️ Earlier today we announced IDP (take a look at our earlier post if you missed it), so we thought we’d share a bit more about the partnership and what it will deliver. IDP is a strategic, long-term partnership designed to deliver the infrastructure that powers Sellafield’s mission. From roads and rail to water and electricity, IDP will support our site’s essential services for the next 9+ years. Meet our partners: ⚡ Morgan Sindall Infrastructure (Electrical Distribution) 🌊 Costain Group PLC (Utilities) 🛣️ HOCHTIEF (UK) Construction Ltd (Civils) But it’s more than infrastructure. This partnership is also about creating lasting value: ✅ Supporting local businesses ✅ Creating jobs and skills ✅ Driving sustainability ✅ Delivering value for money To read more about IDP, click the link in the comments below ⬇️ #ValueforMoney #Skills #Sellafield #Nuclear #SellafieldMission #SocialValue #Infrastructure #Partnerships #SupplyChain #Delivery

📣 Introducing the Infrastructure Delivery Partnership 📣 We’re proud to welcome Morgan Sindall Infrastructure, Costain Group PLC, and HOCHTIEF (UK) Construction Ltd as our new partners in delivering essential non-nuclear infrastructure at Sellafield. Together, we’ll deliver up to £2.9bn of critical work across electricity distribution, utilities, and civils. This work will support our mission to create a clean and safe environment for future generations. The long-term partnership will also unlock investment in skills, innovation, and sustainability for our site and local communities. To read more about the partnership, click the link in the comments below ⬇️ #Sellafield #InfrastructureDeliveryPartnership #SupplyChain #SocialImpact #Decommissioning #Nuclear #Infrastructure