The answer should be 00208 A reactivity of00025 caused by th

The answer should be: -0.0208

A reactivity of-0.0025 caused by the Doppler effect results when the thermal power goes from 2500 MW to 2800 MW. Estimate the contribution of this on this effect on the power coefficient for the reactor.

Solution

Q6)

Given:

reactivity \'r\' = -0.0025

Power changes from 2500MW to 2800MW.

Change in power dP =2800-2500=300MW

% Change in power dP =(dP/P_intial)*100=(300/2500)*100 =12 % =0.12

Power coefficient of Reactor = r/dP =-0.0025/0.12 = -0.0208 [answer]