Method for calculating heat release rate of isotope irradiation target in pebble bed high temperature gas cooled reactor

By using dedicated design software for pebble bed high-temperature gas-cooled reactors and the Monte Carlo (MC) program, a model was built to calculate the heat release rate of isotope irradiation targets, solving the problem of lack of heat release rate calculation in pebble bed high-temperature gas-cooled reactors and achieving accurate temperature analysis and improved safety.

CN120030784BActive Publication Date: 2026-01-02HUANENG POWER INT INC +1
2 Cites 0 Cited by

Patent Information

Application Number
CN202510185016.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2026-01-02
Estimated Expiration
2045-02-19

AI Technical Summary

Technical Problem

The lack of a calculation scheme for the heat release rate of isotope irradiation targets in pebble bed type high-temperature gas-cooled reactors in the existing technology makes it difficult to control the temperature during irradiation, which may lead to thermal damage to materials, equipment failure and reactor operation safety issues.

Method used

A reactor model was constructed using dedicated design software for pebble bed high-temperature gas-cooled reactors and the Monte Carlo (MC) program. The composition distribution of nuclear fuel was calculated. A Monte Carlo model was established through two non-uniform arrangements. The energy deposition and decay heat release rate of the isotope irradiation target were calculated, and the heat release rate was calculated comprehensively.

Benefits of technology

Accurately calculating the heat release rate of isotope irradiation targets reduces calculation errors, improves the safety and accuracy of irradiation production, and provides a data foundation for temperature analysis.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application provides a calculation method of a pebble bed high-temperature gas cooled reactor isotope irradiation target heat release rate, which comprises the following steps: constructing a reactor model of the pebble bed high-temperature gas cooled reactor through a special design application to calculate the nuclear fuel composition distribution of the reactor core; performing twice non-uniform arrangement on the fuel distribution of the reactor core through an MC application program to construct a reactor core MC model and transferring the nuclear fuel composition distribution of the reactor core to the reactor core MC model; calculating the energy deposition heat release rate of the isotope irradiation target through a Monte Carlo model for isotope irradiation production and the decay heat release rate of the isotope generated by irradiation; and adding the energy deposition heat release rate and the decay heat release rate to obtain the isotope irradiation target heat release rate of the pebble bed high-temperature gas cooled reactor. The method can accurately calculate the heat release rate of the isotope irradiation target in view of the double non-uniformity and the non-stop reactor refueling characteristics of the pebble bed high-temperature gas cooled reactor.
Need to check novelty before this filing date? Find Prior Art