CRUD in PWR/VVER Coolant (Volume II)

Basic course for Plant Chemists and Fuel Engineers | taught by A.N.T. International

Course description


The purpose of this course is to describe the tools and their application to adequately control the coolant crud in order to improve the fuel and out-core radiation performance. There is an associated course which describes solubility, transportation, deposition and release of crud that helps to better understand the crud behavior under PWR/VVER/CANDU operating conditions. The information given in this and the associated course:

  • Can support the plant chemists to establish their coolant chemistry strategy to achieve the plant specific goals.
  • Is valuable for fuel vendors and plant fuel engineers to understand the influence of coolant chemistry on fuel performance.

This course involves watching webinars. Complementary reading is optional to even deepen your knowledge. The course material, including the online content, can be accessed at times convenient for practicing engineers and managers. The PowerPoint-presentations are available for download on almost all lectures. You will find them just before the lecture starts.

If you need a printed certificate, please don’t hesitate to contact us and we will send it to you via regular mail. You may reach us at

Please note that these PowerPoint-presentations are the actual file from the seminar that has been recorded. Therefore, there may occur spelling errors and/or less perfect pictures or slides. As the presentations are the expert’s own material we have not edited them before making these lectures available online.

If you have any questions regarding this course, please contact support at


Dr. Suat Odar

Course duration

The below listed time for the lectures is the actual running time. More time may be needed to digest the information provided in this course and you may have to watch some lectures more than once.

  • Total time: around 8 hours 
  • Complementary reading: 3 h
  • Webinars: 5 h

Course parts

Coolant CRUD behavior 
  • CRUD sources
  • CRUD release, transportation and in-core deposition
  • Core CRUD release & radiation field build-up
Preventive tools for CRUD & radiation field control
  • Plant design phase
  • Hot Functional Tests
Mitigating tools for CRUD & radiation field control
  • Power operation by coolant chemistry
  • Plant shutdown operation
Active cleanings for CRUD & radiation field control
  • High temperature mechanical filtration (VVER 1000 strategy)
  • Chemical & mechanical decontaminations
  • Fuel CRUD removal


The information presented in this course has been compiled and analysed by Advanced Nuclear Technology International Europe AB (ANT International®) and its subcontractors. ANT International has exercised due diligence in this work, but does not warrant the accuracy or completeness of the information. ANT International does not assume any responsibility for any consequences as a result of the use of the information for any party, except a warranty for reasonable technical skill, which is limited to the amount paid for this course.

A.N.T. International
A.N.T. International

ANT International Academy support team can be reached at

Reviews (1)

by Jean Change

by Jean Change