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2015 年 05 月 11 日
Seminar - CANDU Fuel: Design Improvement Initiatives By Dr. Paul K. Chan

Date: 11 May 2015 (Monday)

Time: 10:30 am – 11:30 am

Venue: CD308, The Hong Kong Polytechnic University

Abstract:

This talk will include two parts. In the first part the development of innovative
methods for characterizing the mechanical properties of nanowires, nanobelts and
ultrathin films will be introduced. In the second part the fundamental understanding of
deformation mechanisms of a thin film multilayered structure under mechanical loading
and its removal characteristics involved in abrasive machining will be discussed.

As CANDU reactor cores age, safety margins become particularly tight. Realistic and practical approaches are proposed here to recover lost margins and to support the development of advanced fuel.

Research activities in this area at the Royal Military College of Canada will be presented. This presentation will discuss:

1. The use of a small amount of neutron absorbers in CANDU natural uranium fuel bundles to mitigate the fuelling transients and end-flux peaking;

2. The statistical analysis of actual fuel manufacturing data to demonstrate safety margins;

3. The development of a stress-corrosion cracking (SCC) mitigating coating, and 

4. The development of a fuel performance code for modeling SCC and the use of thorium fuel for a Canadian GEN-IV design.

The results of these research activities are especially encouraging. The messages from this presentation are as follows: the CANDU fuel is indeed safe, reliable and flexible, and a synergism for collaboration does exist.

Bio-sketch:

Prof. Chan was born in Hong Kong, obtained his B.Sc (Hons) from Univ. of Victoria, MSc from Univ. of British Columbia and PhD from Univ. of New Brunswick. He is currently professor at the Royal Military College of Canada (RMCC), Kingston, Ontario, Canada and Manager of the SLOWPOKE-2 facility at RMCC. He has been working in the CANDU (Canada Deuterium Uranium reactor) industry for 28 years. Before joining RMCC in 2010, he worked for AECL (Atomic Energy of Canada Limited) and Bruce Power. Prof. Chan obtained research funding from the CANDU Owners’ Group, CAMECO Corp., Natural Sciences and Engineering Research Council of Canada and Generation IV Program (on the Canadian Super-Critical Water Reactor). Prof. Chan collaborates with various organizations and universities, such as IAEA, KAERI and HKCityU. He is also a Professor for the UNENE MEng Program and a Chair of the Fuel Technologies Division for the Canadian Nuclear Society.