Decommissioning Of The Dalhousie Thermal Generating .
Decommissioning of the DalhousieThermal Generating StationA Waste Management PerspectiveOctober 16, 2014Presented by Andrew Philopoulos P.Eng. M.Sc.
Outline Background PresentWaste Management Activities inTerms of the 6Rs (Reduce, Reuse, Recycle,?, ?, ?)
Background Dalhousie Thermal Generating Station 320 MW Generating Station Operated between 1968-2011 Fuel Sources: Bunker C and Coal 1978/79, 1994, and 2000 Major Refurbishments 2013 Commencement of Decommissioning andDemolition
InfrastructureWest WharfFuel PipelineRail SidingPlant SiteBlair MalcolmLandfill
Plant Site
Dalhousie – Plant SiteTankFarmBoilerhousesCWI/CWO2 StacksWWTP
Plant Site
Plant Site
Plant Site
Plant Site
Fuel Pipeline and West Wharf
Blair Malcolm LandfillCappedFixatedAsh CellCell 1(Active)HamiltonBrookCappedCoal AshAreas
Blair Malcolm Landfill
Blair Malcolm Landfill
Project Milestones Project Milestones 2009 - Decommissioning and Demolition Plan 2011 – Ceased Operation 2012 - EIA 2013/2014 - Tender Documents 2013-2016 – Demolition
Waste Management Activities Topresent waste management practices interms of 6Rs 3Rs- Reduce, Reuse, Recycle 4Rs - Reduce, Reuse, Recycle, Rethink 4Rs – Reduce, Reuse, Recycle, Responsible 4Rs – Reduce, Reuse, Recycle, Responsive 5 Rs - Rethink, Refuse, Reduce, Reuse, Recycle, 6Rs – Respect, Rethink, Reduce, Reuse, Recycle, Restore Reduce, Reuse,RiskRecycle, Rethink, Refuse,
Reduce Operated43 years (1968-2011) Someoperations remain active to supportdecommissioning activities (e.g., WWTP) Byreusing and recycling
Reuse Petroleum Products, Glycol,Chemicals Glycol ( 20,000 gal) Bunker C ( 20,000 gal) Diesel (15,000 gal) Barrels of Chemicals (e.g., Aqua Ammonia andSodium Hypochlorite) Earthen Berms(39,000 m3)
Reuse Equipment (e.g.,RO unit, cranes,transformers, ball mills, conveyors, aircompressors, diesel generators) AssetRecovery (e.g., auxiliary boiler,motors) Donations (MillvilleFire Hall, BathurstCommunity College)
Recycling Metaland Concrete Quantities:Approximate Weight(Metric Tonne)Approximate Volume(Cubic Metre)ConcretePlate and Structural Carbon SteelStandard Carbon SteelPlate and Structural Stainless SteelStandard Stainless SteelAluminumTitaniumCopper (Insulated Wire)46,20028,9005,4002305002302531521,000Other Alloys (Bare Copper, Brass,Bronze)50Material
Recycling – Void Spaces59,000 m3 ofVoids Spaces toFill
Rethink – Landfill ClosureAddressSeepsConvertLeachatePonds toOpenChanelSedimentPondConverted toWetlandRelocate Coal Ash,Regrade Slopes
Rethink - Wetland Treatment
Refuse SummaryItemDecommissioning Waste(Universal and Hazardous , ACM, BulkSolid Waste)Demolition Debris (Wood, Insulation,Roofing Materials)RecyclablesDiversion RateApproximate TotalWeight (MT)ApproximateBulked Volume(m3)3,8003,7008503,00082,00095%
Risk - Hazmat Management Managed by NB Power (e.g., ODS, mercury,PCBs, radionuclides) Benefits: utilizing internal trained staff, costeffective, control Central collection of PCBs (Marysville)
Questions?
Background Dalhousie Thermal Generating Station 320 MW Generating Station Operated between 1968-2011 Fuel Sources: Bunke
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