Overview of AECL’s Tritium Compatible Electrolyser Program of...Overview of AECL’s Tritium...
Transcript of Overview of AECL’s Tritium Compatible Electrolyser Program of...Overview of AECL’s Tritium...
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Overview of AECL’s Tritium Compatible Electrolyser
Program
Tritium Focus Group Meeting, Idaho National Lab 2014 Sep 24-25
Ian Castillo
Chalk River Laboratories, Ontario, CANADA
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Outline of Presentation
• Introduction & Background • Electrolyser program overview • Materials development (MEA) • Testing
–Part A: Bench top scale –Part B: Small lab scale –Part C: Pilot scale
• Summary
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Introduction & Background
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DNGS
DTRF
T in D2O – Darlington T in H2O - Fukushima T in Fusion - ITER
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Introduction & Background
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PCP – Hamilton, ON CECEUD – Chalk River, ON
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Introduction & Background CECE Technology
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H. Boniface, A Practical Process for Light Water Detritiation at Large Scales, Pacific Basin Nuclear Conference, 2014
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Program overview Caustic vs PEM Electrolysers
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Alkaline (Hydrogenics) PEM (HOGEN)
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Program overview
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Materials development
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D. W. Clegg and A. A. Collyer, Irradiation Effects on Polymers, Elsevier, 1991
Nafion® based type membranes Radiation resistant polymers
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Materials development
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PEM Test station Vaccum oven - cast table
Spray machine
Tensile machine
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Materials development
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Through Hole Bolt Hole
Membrane Electrodes
Gasket
Large membrane
Small MEA
Large MEA
Leak test cell
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Program overview
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Testing Part A: Bench top scale Study 1A: Gamma radiation exposure
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Membrane “Stiffness” – Modulus [MPa]
“Permanent deformation” - Offset Stress [MPa]
“Ductility” - Break Strain [cm/cm]
Blank Exposed Blank Exposed Blank Exposed Mod N-1110 (1000 kGy) ~200 1 to 3% ~10 5 to 10% ~2.5 -70%
AECL -100 (1000 kGy) ~450 -20 to 22% ~30 -25 to -30% ~0.4 -20 to -25%
1,000 kGy of Gamma (wet) gamma exposure
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Testing Part A: Bench top scale Study 1A: Gamma radiation exposure
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1,000 kGy of Gamma (wet) gamma exposure
S. Lalonde, et al. Charoacterization of Commercial Proton Exchange Membrane (PEM) Materials After Exposure to Beta and Gamma Radiation ,10th Int. Conf. Tritium Sci. Tech. Nice, 2013
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Testing Part A: Bench top scale Study 2A: Tritiated water exposure
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C. Muirhead, et al. Production of Tritiated Water for Tritium Exposure Studies, 10th Int. Conf. Tritium Sci. Tech. Nice, 2013
1,000 Ci/L (37 TBq/L) tritiated D2O
Large exposure vessels
Small exposure vessels
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Testing Part A: Bench top scale Study 2A: Tritiated water exposure
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Week of Decontam (Method)
Leachate Concentration (Bq/mL)
Week of Decontam (Method)
Leachate Concentration (Bq/mL)
Nafion 1110 1 (A) 450 42 (C) 60
Nafion 1110 1 (B) 1200 17 (C) 310
AECL 100 1(B) 1300 16 (C) 530
~2,000 Bq/ml in leachate relate to 4.5 x106 Bq/g in membrane
Help?
Post-exposure membrane
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Program overview
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Testing Part B: Study 1B: Electrolyser testing stations
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Testing Part B: Study 2B: Small CECE Process
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C. Muirhead, et al., Advanced Combined Electrolysis & Catalytic Exchange (CECE) Process for Hydrogen Isotope Separation in Water Decontamination Applications,64th Canadian Chem. Eng. Conf.Niagara Falls, 2014
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Testing Part B: Study 3B: Small Commercial Electrolyser
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Program overview
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Testing Part C: Study 1C: Large Prototype Electrolyser
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Summary
• AECL has developed new tritium compatible membranes and suitable electrodes for PEM-type cells
–AECL 100 series – Good resistance –AECL 200 series – Good resistance at lower voltage
• AECL is collaborating with Tyne Engineering for commercial demonstration of tritium compatible electrolysers
• AECL’s electrolyser program is ongoing
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Collaborators
• S. Suppiah • H. Boniface • S. Thomson • C. Muirhead • H. Li • R. Carson • M. Byers
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• F. Mattie • K. McCrimmon • A. Tripple • N. Philippi • K. Pilatzke • Tyne Engineering Inc
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