Method for verifying calibration value of power coefficient Gk of power range of nuclear reactor

Abstract

The invention discloses a method for verifying a calibration value of a power coefficient Gk of a power range of a nuclear reactor. According to the method, the coefficient Gk is used for correcting the deviation of a RPN system caused by deepening of burnup of a reactor core of the nuclear reactor and power distribution, the RPN system is provided with four groups of channels, and the power rangeof each group of channels is divided into a plurality of ionization chambers. The method for verifying the calibration value of the power coefficient Gk of the power range of the nuclear reactor comprises the following steps that 1, a first Gk value is calibrated; 2, the actual reactor core power value Pkme is obtained through calculation under the condition that the reactor core operates stably;3, the RPN system measures the nuclear reactor so as to acquire a first real-time reactor nuclear power value Pr; and 4, a second Gk value is obtained through calculation through the actual reactor nuclear power value Pkme and the first real-time reactor nuclear power value Pr. The method for verifying the calibration value of the power coefficient Gk of the power range of the nuclear reactor hasthe advantage that whether the calibration value of the power coefficient Gk of the power range of the reactor is correct or not can be verified.

Description

Technical field [0001] The invention relates to a method for verifying the calibration value of the power coefficient Gk of the power range of a nuclear reactor. Background technique [0002] Nuclear reactor nuclear power describes the amount of energy released by nuclear fission in the reactor core per unit time. Nuclear reactor nuclear power is one of the important indicators for nuclear power plant operators to control the reactor. [0003] The nuclear power value of the nuclear reactor is directly measured by the power range of the nuclear instrument system (RPN system). As the burnup deepens and the burnup distribution changes, the reactor nuclear power measured by the RPN system will deviate from the actual value. This deviation will directly affect the control of the nuclear power plant operation personnel on the reactor and reduce the efficiency of the unit output. [0004] The actual value of the nuclear power of the nuclear reactor is mainly given by the high-precision p...

AI Technical Summary

Problems solved by technology

[0010] However, the calibration of the current Gk power coefficient is not accurate, which will cause the display of the nuclear power of the reactor to be inconsistent with the actual power. Generally, there will be two situations:

[0011] 1. If the display of nuclear power of the reactor is larger than the actual nuclear power, it will trigger the reactor protection setting and make the unit jump;

[0012] 2. If the display of the nuclear power of the reactor is smaller than the actual nuclear power, it will cause misjudgment for the operator to control the reactor, and make the operator perform unnecessary intervention on the core

[0013] Regardless of whether the display and actual power of the reactor nuclear power are too large or too small, it will affect the economic benefits of the power plant and increase the risk of safe operation of the power plant

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