US 4,093,514 AGranted

Method of bringing nuclear power plant to fractional electrical load conditions

OwnerVladimir Grigorievich Iljunin, Igor Alexeevich Kuznetsov +2inventors

InventorsVladimir Grigorievich Iljunin, Igor Alexeevich Kuznetsov, Viktor Mikhailovich Murogov, Anatoly Nikolaevich Shmelev

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Abstract

A method of bringing a nuclear power plant to fractional electric load conditions, which power plant comprises at least two nuclear reactors, at least one nuclear reactor being a breeder and both reactors transferring heat to the turbine working substance, consisting in that the consumption of the turbine working substance is reduced in accordance with a predetermined fractional load. At the same time, the amount of heat being transferred from the nuclear reactors to the turbine working substance is reduced, for which purpose the reactors are included in autonomous cooling circuits to successively transfer heat to the turbine working substance. The breeding reactor is included in the cooling circuit with a lower coolant temperature, the temperature of the coolant at the inlet and outlet of the breeder being reduced to a level ensuring the operation of the nuclear power plant in predetermined fractional load conditions, due to which the power of the breeder is increased, and afterheat is removed.

Claims4

Dependent claims

A method of bringing a nuclear power plant to fractional electric load conditions, which nuclear power plant comprises a turbine driven by a working substance, at least two nuclear reactors, at least one nuclear reactor being a breeder and both reactors transferring heat to said working substance, said method comprising the steps of:

reducing the supply of working substance to said turbine in accordance with a predetermined fractional load;
transferring heat successively from said nuclear reactors to said working substance;
connecting said breeding reactor to a first cooling circuit having a first coolant temperature;
connecting the other nuclear reactor to a second cooling circuit with a coolant temperature higher than said first coolant temperature;
lowering the coolant temperature at the inlet and outlet of said breeding reactor to a level corresponding to the reduced supply of said and increasing the power of said breeding reactor as a result of the lowering of the temperature of the coolant flowing therethrough;
and removing excess heat resulting therefrom.

3 more elements

Dependencies are inferred from the claim text.