Parameter

Temperature Range (˚C)

Irradiated Core (mk/˚C)

Clean Core (mk/˚C)

Fuel Temperature

Reactivity Coefficient

20 - 40

−0.00347

50 - 100

−0.00294

200 - 600

−0.00266

-

Average (mk/˚C)

−0.00303

-

Moderator Void

20 - 40

−0.08644

Reactivity Coefficient

50 - 100

−0.19194

Average (mk/˚C)

−0.13871

-

Moderator Temperature (only) Reactivity Coefficient

20 - 40

0.007848

50 - 100

0.003924

Average (mk/˚C)

0.005886

Combined Moderator

20 - 40

−0.08921

Reactivity Coefficient

50 - 100

−0.15456

Average (mk/˚C)

−0.12188

−0.13 (SAR)