Study on Calculation Method of Corrosion Product Source Term in Lead-Bismuth Fast Reactor Coolant System-Reference-Cited by-同舟云学术

Study on Calculation Method of Corrosion Product Source Term in Lead-Bismuth Fast Reactor Coolant System

Published:2023 Issue: Volume: Page:635-642
ISSN:0930-8989
Container-title:Springer Proceedings in Physics
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Author:

Wan Haixia

Abstract

AbstractIn the coolant system of lead-bismuth fast reactor, the corrosion products produce great occupational radiation dose to the workers, especially in the process of maintenance and repair of nuclear facilities. Therefore, it is very important to accurately calculate the corrosion product source term caused by the reaction between coolant and structural materials. The generation, migration, decay and deposition of corrosion products are described by the corrosion characteristics of lead-bismuth alloy on stainless steel in coolant loop, and the mathematical equilibrium equation is established. The equation is used to calculate the corrosion product source term of the coolant loop in the 20MWth lead-bismuth fast reactor and the variation laws of the corrosion product with time are obtained. The results show that the radioactivity of the corrosion products mainly comes from nuclides such as 51Cr, 54Mn, 58Co and 60Co, and the short-lived nuclides such as 51Cr and 58Co decay gradually after shutdown, long-lived nuclides such as 54Mn and 60Co are the main sources of radioactivity.

Publisher

Springer Nature Singapore

Link

https://link.springer.com/content/pdf/10.1007/978-981-99-1023-6_55

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