power excursion

power excursion

[′pau̇·ər ik‚skər·zhən]
(nucleonics)
A sudden increase in the power level of a nuclear reactor, caused by a sudden increase in reactivity.
References in periodicals archive ?
This does not present a problem in a small reactor like EBR II but large fast reactor cores tend to have positive void coefficients, resulting in a runaway power excursion if the sodium boils.
It is considered to be the worst nuclear power plant disaster in history, resulting in a severe release of radioactivity following a massive power excursion that destroyed the reactor.
OFDM signals without CFR have RF power characteristics similar to that of additive white Gaussian noise (AWGN), with peak power excursions more than 10 dB above the average power.