Effects of process-generated hydrogen on RPV walls

Symbols

Chemical activity of specie i Concentration of specie i

a i c i

Heat capacity

C p D i E a

Diffusion coefficient of specie i

Activation energy for the Arrhenius law

Faraday constant

F ˜ F f i

Conversion factor from rad/s to eV/gs

Fugacity of specie i

G-value for the production of specie i due to γ -radiation G-value for the production of specie i due to α -radiation G-value for the production of specie i due to neutron-radiation

G γ i G α i G n i H i

Henry constant for specie i

Current density

I

Flux of specie i due to corrosion

J c i

Thermal conductivity

k

Equilibrium constant for reaction i

K i k j k S

Reaction rate constant for chemical reaction j

Sieverts’ solubility constant Ionic product of water

K W

Molar mass

M ˙ n i

Production rate of specie i

Avogadro constant Pressure of specie i

N v

P i

Chemical production rate of specie i

R c i R y i

Production rate of specie i formed by radiolysis

Reaction rate for reaction i

RR i

Temperature Specific volume

T

v

Volume

V

Molar volume

V m

Molfraction of specie i

x i

viii