Real-time reactor coolant system boron concentration monitor utilizing an ultrasonic spectroscpopy system

Abstract

A method and a system for performing real-time, continuous, measurements of the boron concentration in the water entering a nuclear reactor coolant system. The invention utilizes knowledge of the impact that boron contained in liquid water has on the attenuation of acoustic or ultrasonic waves. This information, coupled with radiation damage resistant and high temperature operability capable transmitter and receiver equipment, provides the means to place the measurement system sensors and signal processing electronics on the reactor coolant system charging flow piping or the hot leg or cold leg of the reactor coolant loop. This will allow the reactor operator to directly monitor both the reactor coolant system boron concentration value and detect changes in the reactor coolant system boron concentration relative to a reference value as they occur.

Description

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AI Technical Summary

Benefits of technology

This patent uses advanced technologies like electronics and sensors made from small machines called vacuum microdevices. These devices can withstand extreme conditions such as high temperature and radiation without getting damaged. The use of this technology allows for replacing important parts of certain devices with smaller versions created through vacuum tubes. One example given in the patent is a new type of neutron monitor which measures the movement of neutrons in real time during operation. Overall, this innovation makes it possible to improve the reliability and accuracy of various applications involving harsh environments or safety requirements.

Problems solved by technology

The technical problem addressed in this patent text is the need for a more reliable and efficient method to continuously measure the concentration of boron in the reactor coolant system of nuclear reactors. The current method relies on samples drawn from taps in the system, which results in a significant time lag between the measurement and the current system concentration. This can lead to uncontrolled changes in reactor reactivity and can result in adverse operating events. The proposed solution aims to address these issues by providing a method to continuously measure the boron concentration in the reactor coolant system without being affected by the radiation fields generated by the decay of N-16.

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