Planned OBT Experiments at CRL Planned OBT Experiments at CRL - - PowerPoint PPT Presentation

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Planned OBT Experiments at CRL Planned OBT Experiments at CRL - - PowerPoint PPT Presentation

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Planned OBT Experiments at CRL Planned OBT Experiments at CRL September 14, 2011 Sang Bog Kim and Vladimir Korolevych Research Scientist Environmental Technologies Branch Chalk River Laboratories Chalk River, Ontario Canada 1 UNRESTRICTED

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Planned OBT Experiments at CRL Planned OBT Experiments at CRL

September 14, 2011

Sang Bog Kim and Vladimir Korolevych Research Scientist Environmental Technologies Branch Chalk River Laboratories Chalk River, Ontario Canada

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Outline

  • AECL’s Nuclear Laboratories
  • Background
  • Current Tritium Experiments
  • Issues
  • Planned Tritium Experiments
  • Discussions

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  • Birthplace of Canada’s nuclear technology
  • First sustained nuclear criticality outside the USA (ZEEP)
  • Supplier of Cobalt-60 for first cancer treatment in Canada (1951)
  • Established as a Crown Corporation (AECL) in 1952
  • Nuclear Power Demonstration (NPD) became operational,

demonstrating CANDU as viable electricity producer (1962)

  • First commercial reactor began operation in 1971 (Pickering A1)
  • Dr. Bertram Brockhouse awarded 1994 Nobel Prize in Physics for

neutron scattering research

  • > 60 year nuclear legacy

The Nuclear Laboratories Chalk River – July 29 1945

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AECL Nuclear Laboratories -Today

  • The “knowledge base” of the Canadian nuclear industry
  • Location of several key national nuclear facilities
  • Major producer of medical radioisotopes
  • Leader in Canadian nuclear environmental stewardship
  • A nuclear laboratory applying science & technology for the

benefit of Canadians and the world.

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  • Specialized Expertise -

Employees: Chalk River 2780 Whiteshell 406 Ottawa 15 Port Hope 25

  • Specialized Research,

Development and Test Facilities

  • Unique capabilities to work

with radioactive materials

AECL Nuclear Laboratories - Today

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Unique S& T Facilities

Hot Cells Fuel Fabrication Surface Science Thermalhydraulics ZED-2 NRU Biological Research Facility

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Current AECL Organizational Structure

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AECL Commercial Operations Nuclear Laboratories

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Tw o New Organizations

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AECL Canduenergy

AECL Nuclear Laboratories

  • AECL’s CANDU Reactor Division will be divested.
  • The Nuclear Laboratories will
  • play an important role in the future success of

Canduenergy (and the CANDU fleet)

  • retain “AECL Brand”
  • remain a Crown Corporation (for near-term)
  • be subject of review/restructuring by the Federal Gov’t.

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Background

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  • AECL Restructure
  • SP: Privatized to CANDU Energy
  • CRL : Under Government
  • National Laboratories
  • International Collaboration
  • Tritium is still important for Canadians
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Current Tritium Experiments (1)

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  • OBT in Fish
  • Rainbow trout (from 150g to 600g)
  • All tagged
  • HTO (7,000 Bq/L) and OBT (30,000 Bq/L) exposure

simultaneously

  • OBT in Soil
  • Historical HT release sites
  • Major wind direction sites
  • OBT background in Canada
  • HT exposure to Microbes isolated from Darlington

Nuclear Power Station soil

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Current Tritium Experiments (2)

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Current Tritium Experiments (3)

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Current Tritium Experiments (4)

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Issues

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  • OBT measurements
  • OBT concentrations in fish from Ottawa River
  • OBT background in soil
  • OBT model develop and validation
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Planned Tritium Experiments

  • Multi-purpose Exposure Chamber Experiment
  • Collaboration with Romania under MOU
  • Day and night time exposure
  • Wet and foggy condition exposure
  • OBT translocation to crop
  • OBT Inter-laboratory Comparison
  • Collaborate with CEA (France)
  • International Worksop will be held May, 2012 in France
  • Site-specific OBT fish Model
  • Perch Lake (2013)
  • Ottawa River (Collaborate with Romania)

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Discussion

  • Tritium monitoring paradigm (from HTO to OBT)
  • Water sample (HTO, Dissolved organic tritium (DOT))
  • Biota sample (OBT or both)
  • Observation and prediction (modelling)
  • Normal operation: observation and accuracy
  • Accidental situation: modelling and conservative
  • Validation (Acute and Chronic)
  • Acute experiment (chamber exposure)
  • Chronic experiment (field measurement)

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AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL