2. tony wratten - imeche
TRANSCRIPT
RSRL UpdateIMechE Nuclear DecommissioningDecommissioning Conference27 June 2012
Tony WrattenRSRL Managing Director
RSRL - WHO ARE WE?
2 i H ll (O f d hi )• 2 sites – Harwell (Oxfordshire) and Winfrith (Dorset)
• 100 miles apart
T £60• Turnover ~ £60m
• ~£30M external spendp
• ~ 400 Staff
Harwell Historyy
1946: Atomic Energy Research Establishment createdEstablishment created
1990: Reactors begin closing1996: Restructuring to focus1996: Restructuring to focus
on decommissioning2005: Contract with NDA2005: Contract with NDA2009: Transition to Research
Sites Restoration LtdSites Restoration, Ltd.2010: UKAEA Ltd. sold to
Babcock
Harwell Lifetime PlanNear term focus:
– Legacy waste processingg y p g– Groundwater clean-up– Campus development
f ilit tifacilitation
Long term focus: C l t d i i i– Complete decommissioning
– Store intermediate level waste until national facility readyy y
2011/12 Harwell Programme Highlightsg g g700+ ILW cans processedLETP readied for decommissioningLETP readied for decommissioningThree LETP tanks’ sludge removed50 radium cans processedB220 radium processing completed4,000m active drain removedT d t d i j t l t dTrade waste drain project completedSix buildings demolishedFour delay tanks decommissionedFour delay tanks decommissionedNuclear materials shipment business case approvedNorth Gate Area de-licensed
2012/13 Harwell Programmeg
• B462 ILW Processing on 3 shifts• LETP Decommissioning• B220/459 to Care and Maintenance
ILW S Pl i d D i• ILW Store Planning and Design• Offsite Discharge Pipeline Test
Section Removal• B551 Decommissioning• B466 Pond Decontamination• Old Main Active Drain Removal• Waste Shipments
Active Drain Decommissioningg
• 12 Km of trade level active drain network decommissionednetwork decommissioned– In-situ cleaning and probe– ~95% grouted in-situ as clean
• 700m of 4000m main active drain decommissioned by excavation to dateexcavation to date
• Part of an effluent strategy to reduce liquid discharges, utilise f l d l tfoul sewers, and replace current effluent plant with a much smaller fit for purpose plant
RSRL Plans Include a New ILW Store
• ILW produced through Harwell workp g– B462 tube store removals to Vault
StoreBEPO DIDO PLUTO reactor– BEPO, DIDO, PLUTO reactor decommissioning
• Storage needed until geological disposal facility (GDF) available – GDF currently planned to receive
ILW after 2040a te 0 0• Makes more of the Harwell site
available for campus developmentTypical ILW Container for Decommissioning Waste
RSRL Starting Planning Work on ILW Storeg g
• Work on planning application started– Targeting September submission– Targeting September submission– Consultation expected from
September• Considering options for Harwell,
Winfrith and Culham ILW to achieve benefits including...g– Release of land for new uses– Avoid unnecessary construction
R di t t ti d– Redirect construction and operations costs to support decommissioning activities
• No decision has been made
Nuclear Material to Sellafield• NDA option study recommended
transfer of Harwell nuclear material to Sellafield– Hazard reduced
Security improved– Security improved– Costs reduced
• NDA approved joint business case• Two years preparations followed by
about 5 year shipping operationSafety cases– Safety cases
– Flask licensing– B462 minor modifications
Winfrith HistoryWinfrith History• Prototype reactor site for civil nuclear power
developmentdevelopment• Work started in 1957• 500 hectares total land holdings (150
fenced)• Total of eight reactors operated between
1959 and 1995• About 2/3 is a Nuclear Licensed Site• West of site is a “Site of Special Scientific
Interest” (SSSI)( )
EARLY DECOMMISSIONING
WINFRITH TIME LINE
ORIGINAL MISSION
AND DEVELOPMENT OF WINFRITH TECHNOLGY CENTRE
ONGOING SITE CLOSURE PROGRAMMEORIGINAL MISSION
1958 - mid 1990s
CENTRE
mid 1990s to 2004PHASE 1 PHASE 3PHASE 2
Site ClosureWEST
SEPARATION OF THE WINFRITHTHE WINFRITH TECHNOLGY CENTRE
SGHWR DecommissioningRefuelling Machines &
g
Deaerator Turbine & Condenser
Refuelling Machines & Rotating Shields
Dragon Decommissioning
Fission Product Cl U Pl tClean Up Plant
Transfer Tunnel &Tunnel &
Other Plant
Site of no f ll decommissioned Acti e Handling B ildingSite of now fully decommissioned Active Handling Building A59
RSRL Programme – Resolve a 70 Year LegacyM l t●Manage legacy waste: ■~6,600 ILW cans in B462
Ship nuclear materials to Sellafield■Ship nuclear materials to Sellafield■Contact handled ILW
●Complete remaining●Complete remaining decommissioning scope: ■5 reactors■5 reactors■1 large radiochemical facility ■3 shielded cell facilities■2 liquid effluent treatment plants and
discharge pipelinesN t i t d f iliti■Numerous contaminated facilities
■Contaminated land