Numerical simulation of Delayed-SPND response current in NECP-Bamboo

Ruizhi Shao; Liangzhi Cao; Yunzhao Li; Lin Guo; Jiewei Yang; Fengwei Si; Chao Du; Chenghui Wan; Hongchun Wu

doi:10.1016/j.anucene.2022.109438

Numerical simulation of Delayed-SPND response current in NECP-Bamboo

Ruizhi Shao
, Liangzhi Cao
, Yunzhao Li
, Lin Guo
, Jiewei Yang
, Fengwei Si
, Chao Du
, Chenghui Wan
, Hongchun Wu

School of Energy and Power Engineering

Xi'an Jiaotong University
Ltd.

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Self-Powered Neutron Detectors (SPNDs) are widely used in Gen-III commercial PWR cores to simultaneously and continuously measure the in-core neutron flux density. A response current simulation module has been designed, developed and validated in the NECP-Bamboo code for delayed-SPNDs. First, neutron transport and nuclide depletion simulation are carried out in Bamboo-Lattice to obtain the variation of nuclide composition and the few-group constants. Next, a Monte-Carlo code is employed to calculate the electron escape probability and gamma sensitivity of SPND for each depleted lattice. Finally, the electron escape probability, gamma sensitivity and the few-group constants are regarded as input parameters for the core simulation. The response current is calculated in the Bamboo-Core code during the simulation of core operation. The methodology and the code were verified against measured values on Vanadium and Rhodium SPND. In addition, the response current of Vanadium SPND in the AP1000 core was simulated and validated.

Original language	English
Article number	109438
Journal	Annals of Nuclear Energy
Volume	179
DOIs	https://doi.org/10.1016/j.anucene.2022.109438
State	Published - 15 Dec 2022

Keywords

AP1000
NECP-Bamboo
Response current simulation
SPND

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10.1016/j.anucene.2022.109438

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title = "Numerical simulation of Delayed-SPND response current in NECP-Bamboo",

abstract = "Self-Powered Neutron Detectors (SPNDs) are widely used in Gen-III commercial PWR cores to simultaneously and continuously measure the in-core neutron flux density. A response current simulation module has been designed, developed and validated in the NECP-Bamboo code for delayed-SPNDs. First, neutron transport and nuclide depletion simulation are carried out in Bamboo-Lattice to obtain the variation of nuclide composition and the few-group constants. Next, a Monte-Carlo code is employed to calculate the electron escape probability and gamma sensitivity of SPND for each depleted lattice. Finally, the electron escape probability, gamma sensitivity and the few-group constants are regarded as input parameters for the core simulation. The response current is calculated in the Bamboo-Core code during the simulation of core operation. The methodology and the code were verified against measured values on Vanadium and Rhodium SPND. In addition, the response current of Vanadium SPND in the AP1000 core was simulated and validated.",

keywords = "AP1000, NECP-Bamboo, Response current simulation, SPND",

author = "Ruizhi Shao and Liangzhi Cao and Yunzhao Li and Lin Guo and Jiewei Yang and Fengwei Si and Chao Du and Chenghui Wan and Hongchun Wu",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = dec,

day = "15",

doi = "10.1016/j.anucene.2022.109438",

language = "英语",

volume = "179",

journal = "Annals of Nuclear Energy",

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TY - JOUR

T1 - Numerical simulation of Delayed-SPND response current in NECP-Bamboo

AU - Shao, Ruizhi

AU - Cao, Liangzhi

AU - Li, Yunzhao

AU - Guo, Lin

AU - Yang, Jiewei

AU - Si, Fengwei

AU - Du, Chao

AU - Wan, Chenghui

AU - Wu, Hongchun

PY - 2022/12/15

Y1 - 2022/12/15

N2 - Self-Powered Neutron Detectors (SPNDs) are widely used in Gen-III commercial PWR cores to simultaneously and continuously measure the in-core neutron flux density. A response current simulation module has been designed, developed and validated in the NECP-Bamboo code for delayed-SPNDs. First, neutron transport and nuclide depletion simulation are carried out in Bamboo-Lattice to obtain the variation of nuclide composition and the few-group constants. Next, a Monte-Carlo code is employed to calculate the electron escape probability and gamma sensitivity of SPND for each depleted lattice. Finally, the electron escape probability, gamma sensitivity and the few-group constants are regarded as input parameters for the core simulation. The response current is calculated in the Bamboo-Core code during the simulation of core operation. The methodology and the code were verified against measured values on Vanadium and Rhodium SPND. In addition, the response current of Vanadium SPND in the AP1000 core was simulated and validated.

AB - Self-Powered Neutron Detectors (SPNDs) are widely used in Gen-III commercial PWR cores to simultaneously and continuously measure the in-core neutron flux density. A response current simulation module has been designed, developed and validated in the NECP-Bamboo code for delayed-SPNDs. First, neutron transport and nuclide depletion simulation are carried out in Bamboo-Lattice to obtain the variation of nuclide composition and the few-group constants. Next, a Monte-Carlo code is employed to calculate the electron escape probability and gamma sensitivity of SPND for each depleted lattice. Finally, the electron escape probability, gamma sensitivity and the few-group constants are regarded as input parameters for the core simulation. The response current is calculated in the Bamboo-Core code during the simulation of core operation. The methodology and the code were verified against measured values on Vanadium and Rhodium SPND. In addition, the response current of Vanadium SPND in the AP1000 core was simulated and validated.

KW - AP1000

KW - NECP-Bamboo

KW - Response current simulation

KW - SPND

UR - https://www.scopus.com/pages/publications/85137169218

U2 - 10.1016/j.anucene.2022.109438

DO - 10.1016/j.anucene.2022.109438

M3 - 文章

AN - SCOPUS:85137169218

SN - 0306-4549

VL - 179

JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

M1 - 109438

ER -

Numerical simulation of Delayed-SPND response current in NECP-Bamboo

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Keywords

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