• Date: 2021 Oct 13
  • Venue: CISCO Webex, Virtual
  • Contact: CNS Office
  • Phone: (416) 977-7620
  • Email: cns_office@cns-snc.ca



Olga Palazhchenko (UNB-CNER) 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





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Registration Fees


Before Nov. 2nd 2020

After Nov. 2nd  2020

CNS member



Non CNS Member



CNS retiree



CNS full time student member