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CANDU System Chemistry Course-Virtual Online

December 7, 2020 @ 12:00 am



Olga Palazhchenko (UNB-CNER), Jordan Lyons (UNB-CNER/PLNGS) and
Pam Yakabuskie (CNL)


Course Description

This is an introductory to intermediate level course, designed to provide a solid base of understanding of the synergy between plant chemistry and material corrosion/degradation. The focus is on CANDU systems, including the objectives of chemistry control, corrosion issues, and corrosion mitigation strategies. Relevant “real-life” examples will be provided along with short-form self-assessments and ample time for Q&A to ensure maximum material retention.


Course Outcomes

By the end this course, the participant shall gain:

  • Knowledge of the mechanisms of the major forms of corrosion that affect nuclear plant materials;
  • An understanding of chemistry control objectives for various CANDU systems;
  • An appreciation for the relationship between the chemistry, design, and materials of construction in major CANDU plant systems


Course Topics


General Chemistry Overview (1.5 h, including small self-assessment)

  • pH
  • Conductivity
  • Purification and Ion Exchange
  • Water Radiolysis
  • Corrosion Principles (2 h, including small self-assessment)
  • Uniform Corrosion
  • Galvanic Corrosion
  • Pitting and Crevice Corrosion
  • Stress Corrosion Cracking (SCC)
  • Flow Accelerated Corrosion


System Overview (3 h + 30 minutes for wrap up)

  • Primary Heat Transport System
    • Chemistry Control
    • Corrosion Issues
      • Activity Transport
      • RIHT Rise
  • Moderator
    • Chemistry Control –
  • Secondary Heat Transport System
    • Chemistry Control
    • Corrosion Issues


  • Auxiliary Systems
    • Calandria Vault and End Shield Cooling System
    • Liquid Zone Control





Click here to register online

Registration Fees


Before Nov. 2nd 2020

After Nov. 2nd  2020

CNS member



Non CNS Member



CNS retiree



CNS full time student member








December 7, 2020
12:00 am
Event Category: