BNFL has a strong track record in decommissioning, a process managed by its BNFL Environmental services unit, with around 50 projects completed to date. Work continues at the Berkeley, Trawsfynydd and Hunterston Magnox reactors, and at other facilities such as the first gascooled teactor at Windscale. The first gaseous diffusion plant at Capenhurst has been completely dismantled.

    When considering the decommissioning of Magnox plants, BNFL analysed the range of decommissio-ning approaches with consideration of satety, environmental impact, political and regulatory factors, engineering complexity and cost. The preftrred method inentified for the magnox plants was the 'safestore' strategy, based on the principle that the longer the radioactivity in the structures is left to decay, the simpler and more economic it is to dispose of. Under this strategy, decommissioning takes about 100 years although recently a shortter timetable has under discussion.

HUNTERSTON A
    The Hunterston A site, on the west coast of Scotland, was Scotland's first civil nuclear generating station and, in 1964, when it opened, was the largest in operation in the world. The station comprised of two Magnox fuelled, graphite moderated, steel pressure vessel reactors, a unique feature being that on-load refuelling operations were conducted from below the reactors......

案例全文下载