Method for checking software and hardware connection correctness of neutron temperature measurement channel

Abstract

The invention relates to the technical field of nuclear power station reactor core nuclear measurement systems, in particular to a method for checking software and hardware connection correctness of aneutron temperature measurement channel. The inspection method comprises the following steps: adjusting the unit power and the rod position of a control rod; selecting n control rods as an executiongroup; inserting the i-th control rod downwards, and measuring a power peak factor of a peripheral area of the control rod before rod insertion; inserting the control rod downwards to the bottom of areactor core, and measuring a power peak factor after rod insertion in the peripheral area of the control rod; lifting the control rod to an initial height; calculating a relative power change value of a neutron temperature measurement channel in the peripheral area of the control rod; enabling i to be equal to i + 1, judging whether i is greater than n or not, and if not, repeating the steps; andif yes, judging correctness of software and hardware connection of the neutron temperature measurement channel at the corresponding position according to the relative power change value. The checkingmethod can quickly and accurately judge the correctness of software and hardware connection of a neutron temperature measurement channel, and is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of core nuclear measurement systems of nuclear power plants, in particular to a method for checking the correctness of software and hardware connections of a neutron temperature measurement channel. Background technique [0002] The nuclear power unit uses the core measurement system to monitor the neutron flux distribution, temperature, water level and other signal parameters of the reactor core during the operation of the reactor in real time, and generates corresponding protection signals under unit operation, transient and accident conditions to ensure the safety of the reactor , The purpose of economic operation. The Hualong No. 1 nuclear power unit independently designed and built by my country and the Russian VVER nuclear power unit have both designed and installed core measurement systems. [0003] One of the core components of the core measurement system is the neutron temperature measurement chann...

AI Technical Summary

Problems solved by technology

[0004] Since there are dozens of beams of neutron temperature measurement channels installed in the core, the transmission cable needs to be disconnected every time the unit is overhauled and the cover is opened, and the transmission cable may be wrongly connected when reconnecting, resulting in incorrect connection of the software and hardware of the neutron temperature measurement channel. Correct, resulting in errors in the measurement of parameters such as neutron flux distribution and temperature in the core, resulting in failure of its monitoring and protection functions

However, the hard-wired communication inspection method currently used by some power stations is time-consuming and labor-intensive, and because it works above the reactor, there is a certain risk of radiation dose and foreign matter introduction

Images