Recent content by wronski11

  1. wronski11

    Role of the control rods during the core cycle

    Thanks once again for the information. I was actually confused, because in an exam question I was asked whether CRs can be used for reactivity control. I wrote that CRs are fore fine tuning the power and absorbers (Boron and lumped absorbers) are for homogeneous reactivity suppression throughout...
  2. wronski11

    Role of the control rods during the core cycle

    Thank you again for the information. Reading your replies to my question, I came to the conclusions 1) PWRs operate without CRs at full power and CRs are not often used - in contrast to BWR 2) CRs in PWR are not used for excess reactivity control under normal operation 3) Control of the BWRs is...
  3. wronski11

    Role of the control rods during the core cycle

    Thank you for the answer. It helped me greatly in improving my knowledge. As far as I understand, control rods are not the primary meaning for excess reactivity control. There are more for regulating the power shape and level? Unfortunately,I don't understand what is the meaning of the term rod...
  4. wronski11

    Role of the control rods during the core cycle

    Dear all, I would like to learn more about what happens to CRs during the reactor cycle. At the beginning of the cycle large excess reactivity is present in the core and has to be compensated with burnable absorbers (lumped in rods and WABA coating), chemical shim and CRs. There are several...