Latest news with #dismantling
The Independent
5 days ago
- Business
- The Independent
Fin removed from submarine as disposal reaches ‘significant marker'
A 'significant marker' in the progress of a submarine dismantling initiative has been completed, as the first vessel to be stripped down had its fin cut and removed. The Defence Nuclear Enterprise (DNE) submarine dismantling project announced on Wednesday that demonstrator sub Swiftsure has had its fin removed, a major milestone as the vessel prepares to be fully dismantled by the end of 2026. The work is the world's first full dismantling of a nuclear-powered submarine using a novel and environmentally-responsible method, and it is taking place in Rosyth Dockyard, Fife. The DNE said more than 500 tonnes of waste has been removed and recycled from the sub, and 90% of its total weight is expected to be recycled. With Swiftsure acting as a guinea pig, the DNE aims to develop a blueprint for the recycling of future decommissioned pressurised water reactor one subs. High quality steel taken from the first vessel is already being repurposed for future subs. The fin removal was delivered by the DNE alongside Babcock and Defence Equipment and Support's Defence Recycling and Disposals Team (DRDT). Lorraine Russell, senior responsible owner for the submarine disposals programme, said: 'The project showcases our commitment to sustainable disposal practices. 'By recycling materials wherever possible, we're ensuring these vessels that served the nation so well continue to provide value even after decommissioning.' Alistair Hughes, head of DRDT, said: 'This sustainable solution has shown how we can extract the maximum value from surplus assets and improve defence's supply-chain resilience, whilst ensuring national security and prosperity remains at the core of what we do.' Sir Chris Gardner, chief executive of the Submarine Delivery Agency, said: 'To see the fin of Swiftsure removed is a significant marker of progress in the DNE's submarine dismantling project. 'Our colleagues continue to work tirelessly alongside our industry partners in Rosyth to deliver a proven dismantling method using this demonstrator vessel. My thanks go to everyone involved in this ground-breaking work.' Scottish Secretary Ian Murray said: 'This is another fantastic example of how world-leading Scottish expertise plays such a vital role in the UK's defence. 'Around 25,600 jobs across Scotland are supported by an annual multi-billion-pound Ministry of Defence investment – with 200 highly-skilled roles in Rosyth involved in the submarine dismantling project. 'National security and environmental responsibility are at the heart of our commitment to act as a responsible nuclear operator – a technology which will play a key role in the UK Royal Navy's submarine fleet keeping us safe for years to come. 'Just this week as part of the strategic defence review (SDR), the Prime Minister came to Scotland to announce up to 12 new nuclear-powered attack subs, building on the £15 billion investment set out for the UK's sovereign nuclear warhead programme. 'Scotland has always been at the beating heart of the UK's defence and security and the SDR will restore Britain's readiness, deter our adversaries and help drive economic growth across the UK, as part of our Plan for Change.'
CBC
16-05-2025
- Business
- CBC
Dismantling of Sudbury's Superstack could start this summer, says Vale
If all goes to plan, mining giant Vale will start dismantling the iconic Superstack in the northern Ontario city of Sudbury this summer. Built in 1972, the 381-metre chimney located at the Copper Cliff smelter is the tallest in the Western Hemisphere. The Superstack was built to spread sulphur dioxide emissions, diluting them over a wide geographic area. But in 2018, after years in delays complying with new government environmental regulations, Vale completed its $1-billion Clean Atmospheric Emissions Reduction (AER) project which reduced those emissions by 85 per cent. The company built two smaller stacks to replace Superstack, which was no longer needed. The Superstack has been inactive since 2020, and Vale has been working on plans to safely dismantle the structure since then. "In order to eliminate the risk of deterioration or anything else, we need to take it down," said Paul Guenette, the project lead for Vale's Superstack dismantling. Because the Superstack sits atop a working processing facility, and near homes in Sudbury's Copper Cliff neighbourhood, Guenette said an implosion was out of the question. The company looked at a lot of different ideas to take down the massive concrete structure. "I had my own where we kind of dug a hole underneath to make it sink," Guenette said. They landed on a plan to dismantle it from the top down. Crews have finished building two elevators on the outside of the stack to lift people and equipment up and down. "We'll be setting up a platform at the very top, which is what they're doing today for the next couple of weeks," Guenette said. "After that, probably later on this summer, we're going to see this proprietary piece of equipment that's going to be hoisted up from the inside. It's going to sit on the concrete at the very top, and it's gonna essentially cut pieces of the concrete and make it fall on the inside." Guenette said the work will be done without interrupting work at the smelter below. As the machine dismantles one level of the Superstack, crews will lower it until it eventually reaches the bottom, which could take five years. He said the machine will be operated remotely, although six workers will be at the top to clean up and make sure all debris falls inside the Superstack, where there's no risk of harm. While some people consider the Superstack to be an eyesore, it's also a recognizable part of Sudbury's skyline. Guenette said he has mixed feelings about dismantling the landmark.
CBC
16-05-2025
- General
- CBC
How mining company Vale plans to dismantle Sudbury's Superstack
Paul Guenette, the project lead for Vale's Superstack dismantling, explains how the world's second tallest chimney will be dismantled from the top down.
