Study on Mismatch Phenomenon of Power Change and Reactivity

XIN Feng; YOU Guo-shun; ZHANG Chun-ming

Mar. 2025

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XIN Feng, YOU Guo-shun, ZHANG Chun-ming. Study on Mismatch Phenomenon of Power Change and Reactivity[J]. Nuclear Power Engineering, 2013, 34(3): 8-10.

Citation:

XIN Feng, YOU Guo-shun, ZHANG Chun-ming. Study on Mismatch Phenomenon of Power Change and Reactivity[J]. Nuclear Power Engineering, 2013, 34(3): 8-10.

XIN Feng, YOU Guo-shun, ZHANG Chun-ming. Study on Mismatch Phenomenon of Power Change and Reactivity[J]. Nuclear Power Engineering, 2013, 34(3): 8-10.

Citation:

XIN Feng, YOU Guo-shun, ZHANG Chun-ming. Study on Mismatch Phenomenon of Power Change and Reactivity[J]. Nuclear Power Engineering, 2013, 34(3): 8-10.

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Study on Mismatch Phenomenon of Power Change and Reactivity

1. Department of Nuclear Power, China National Nuclear Corporation, Beijing, 100822, China;
2. Nuclear and Radiation Safety Center Ministry of Environ Mental Protection, Beijing, 100082, China

Received Date: 2012-10-08
Rev Recd Date: 2012-11-28

Available Online: 2025-03-08

Abstract

Abstract

The mismatch phenomenon of reactor power change and reactivity is found in the analysis of main steam line break（MSLB） accident.the point-reactor kinetics proved that the traditional inhour equation can not describe this phenomenon effectively.The origin for the mismatch of reactor power change and reactivity is analyzed.The reactor period equation with dynamic reactivity would include the differential of the reactivity,which can describe such cases well.This equation also showed the physical meaning of such cases.
- Reactor period,
- Reactivity,
- Inhour equation,
- Main steam line break