decay heat


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decay heat

[di′kā ‚hēt]
(nucleonics)
Heat produced by the decay of radioactive nuclides.
References in periodicals archive ?
The towers used for decay heat removal from the reactors will be located in the same building.
Temperatures of the cask body filler and the cask outer surfaces are most significantly impacted by erroneous loading of cask IB with SNF of maximum decay heat power.
The ongoing installment of the new cooling towers is aimed at securing the plant's decay heat removal in highly extreme conditions where the plant's normal seawater cooling for some reason became unavailable.
Recently completed projects discussed at the meeting included modification of the Containment Emergency Sump; modification of the Decay Heat Valve Tank; maintenance work on 90 motor-driven Reactor Coolant System Valves; installation of a FLUS Leak Detection System on the bottom of the reactor vessel; and the successful Integrated Leak Rate Test on the containment vessel.
Prior to conducting the pressure test, Davis-Besse personnel completed such major work as replacement of the reactor head; expansion of the Containment Emergency Sump screen from 50 to 1,200 square feet; installation of the state-of-the-art FLUS leak monitoring system; replacement of the Containment Air Coolers; painting the inside of the Containment Building; validation of the integrity of fuel; and total refurbishment of the Decay Heat Tank.
The sodium coolant is shown flowing in pipes through core, SGDHR (Safety Grade Decay Heat Removal), Intermediate Heat Exchanger and Steam Generator.
And there are standards helping the industry deal with tricky technical problems--take ISO 10645:1992 on calculating the decay heat power in nuclear fuels within light water reactors.
He closely analyzes the space-dependent and space-independent dynamics of FLUBER systems and details the passive removal of post-shutdown decay heat and also describes future research that needs to be done before the systems are fully ready for construction.
The combined neutron, gamma, and beta decay heat load on the methane moderator is expected to be on the order of 1 W when the facility is operated at its full power of 30 kW.
Officials toss around words and phrases like acute radiation syndrome, core damage, decay heat, fission, fuel rods, full meltdown, fusion, inert gas, kilovolt, lixiviant, microcurie, nuclear coolants, partial meltdown, teletherapy and watthour as if the public has a clue.