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Physics, 30.08.2019 21:30 kcain1020

Areactor has been operating for a long time at a power of 2660 mwt. the operator decides to shutdown the reactor. a step reactivity of ~ 10 \beta is introduced by insertion of the control rods. the time (in seconds) for the power to reach 0.1% of the steady state value is most nearly (solve; no choices giving): :

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