NUC K117 Chapter 10: Neutron Poisons
7 Feb 2019
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Fixed burnable poison: poisons added to fuel in the form of boron or gadolinium pins. Depleted" over core life, positive reactivity added: soluble burnable poisons (chemical shim, poison chemical dissolved in reactor coolant. Boron ( b10 ) used to add negative reactivity: naturally adds reactivity as poison depleted over core life, concentration may be adjusted to tweak reactivity as needed ( boration" or. The positive reactivity added by new fuel if o set by the negative reactivity provided by the poison.
