Benchmarking verification of control rod effects on CMRR using MCNP codes throughout 3D core modeling and rod-drop experiment

Dou Haifeng; Li Rundong; Leng Jun; Yuan Shu; Yang Xin; Feng Qijie; Liu Xiao; Gao Chan

doi:10.11884/HPLPB201830.170345

Volume 30 Issue 5

May 2018

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Dou Haifeng, Li Rundong, Leng Jun, et al. Benchmarking verification of control rod effects on CMRR using MCNP codes throughout 3D core modeling and rod-drop experiment[J]. High Power Laser and Particle Beams, 2018, 30: 056001. doi: 10.11884/HPLPB201830.170345

Citation:

Dou Haifeng, Li Rundong, Leng Jun, et al. Benchmarking verification of control rod effects on CMRR using MCNP codes throughout 3D core modeling and rod-drop experiment[J]. High Power Laser and Particle Beams, 2018, 30: 056001. doi: 10.11884/HPLPB201830.170345

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Benchmarking verification of control rod effects on CMRR using MCNP codes throughout 3D core modeling and rod-drop experiment

doi: 10.11884/HPLPB201830.170345

Institute of Nuclear Physics and Chemistry, CAEP, P.O.Box 919-211, Mianyang 621900, China

Received Date: 2017-09-01
Rev Recd Date: 2018-01-15
Publish Date: 2018-05-15

Abstract

Abstract

In this research, MCNP code and ORIGEN code are used to calculate the control rod reactivity worth effects by simulating the 3D core model of CMRR reactor. The integral and differential behaviors of reactivity worth effects are measured by rod-drop experiments and digital inverse kinetic method with each other. The calculated and measured results are well accorded. The integral reactivity worth of one safety rod is about 4%Δk/k. Even in an accident when one safety rod gets stuck, the CMRR shutdown margin is still greater than 10%Δk/k, and CMRR is totally safe. So the physical design of CMRR is highly reliable and the operation could be safe.
- control rod reactivity worth,
- MCNP code,
- CMRR,
- rod-drop experiments,
- inverse kinetic method

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References

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