Method for determining a planning restricted area of a medical isotope production base reactor

The method for determining restricted areas in multi-reactor planning solves the problems of land resource waste and poor site adaptability in traditional methods, and achieves scientifically quantified planning restricted area ranges that meet radiation safety and production chain protection requirements.

CN122414880APending Publication Date: 2026-07-17CHINA INST FOR RADIATION PROTECTION
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA INST FOR RADIATION PROTECTION
Filing Date
2026-03-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, traditional methods are not suitable for the technical characteristics of small reactors when delineating the restricted areas for reactor planning in medical isotope production bases, resulting in waste of land resources and poor site adaptability.

Method used

A multi-reactor planning restricted area determination method is adopted. By constructing a coordinate system, the outer boundary radius is determined, and accident analysis and source term adjustment are performed. The superimposed source terms are calculated using linear superposition and inherent safety correction coefficients. Combined with multi-dimensional consequence evaluation indicators, the planning restricted area boundary is iteratively adjusted to meet the preset threshold.

Benefits of technology

It has achieved a scientifically quantified scope of planning restrictions, reduced the waste of land resources, improved the site adaptability and the accuracy of radiation impact assessment, and ensured radiation safety and production chain protection requirements.

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Abstract

The present application relates to a kind of medical isotope production base reactor planning limit area determination method, with the center of single reactor pressure vessel in multiple reactor as origin, the outer boundary radius of multiple reactor planning limit area is determined;Within the outer boundary radius of planning limit area, the accident analysis is carried out to multiple reactor, and the source term reference value of each reactor is adjusted based on inherent safety correction coefficient;Using linear superposition mode, the source term of multiple reactor is superposed, and the superposition source term is obtained;According to superposition source term, the corresponding atmospheric dispersion state of multiple reactor is determined, and multiple-dimensional consequence evaluation index is obtained;Based on multiple-dimensional consequence evaluation index, the outer boundary radius of multiple reactor planning limit area is iteratively adjusted until multiple-dimensional consequence evaluation index meets preset threshold, and the boundary of planning limit area is determined.The present application realizes scientific quantification of radiation influence under normal operation and accident condition, and solves the problem that traditional method has poor adaptability and insufficient evaluation accuracy.
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