Analysis of characteristics for liquid entrainment through ADS-4 during a small break LOCA in AP1000

Weiwei Wang; Lifang Liu; Zhaoming Meng; Xiaoliang Fu; Wenxi Tian; Yanhua Yang; Guanghui Su; Suizheng Qiu

doi:10.13832/j.jnpe.2015.05.0178

Analysis of characteristics for liquid entrainment through ADS-4 during a small break LOCA in AP1000

Weiwei Wang
, Lifang Liu
, Zhaoming Meng
, Xiaoliang Fu
, Wenxi Tian
, Yanhua Yang
, Guanghui Su
, Suizheng Qiu

School of Energy and Power Engineering

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

Abstract

In the ADS blowdown phase during SBLOCAs in AP1000, ADS-4 valves open and vent directly to the containment. If a critical vapor velocity is reached in the two hot legs, the liquid phase can be entrained to the containment through the ADS-4 in the form of liquid droplet. In the present study, the RELAP5 code is modified with the entrainment correlations obtained from the ATLATS test facility which was constructed at OSU in USA. Furthermore, the characteristics of liquid entrainment through ADS-4 during a 5.08 cm (2 inch) cold leg SBLOCAs in AP1000 was investigated. Results showed that the current liquid entrainment model in RELAP5 underestimated the liquid entrainment quantity through ADS-4 and resulted in a non-conservative safety analysis results.

Original language	English
Pages (from-to)	178-183
Number of pages	6
Journal	Hedongli Gongcheng/Nuclear Power Engineering
Volume	36
Issue number	5
DOIs	https://doi.org/10.13832/j.jnpe.2015.05.0178
State	Published - 15 Oct 2015

Keywords

ADS-4
AP1000
Liquid entrainment
RELAP5
SBLOCA

Access to Document

10.13832/j.jnpe.2015.05.0178

Cite this

@article{8b46b58657184b77ac8c53df3d314f1f,

title = "Analysis of characteristics for liquid entrainment through ADS-4 during a small break LOCA in AP1000",

abstract = "In the ADS blowdown phase during SBLOCAs in AP1000, ADS-4 valves open and vent directly to the containment. If a critical vapor velocity is reached in the two hot legs, the liquid phase can be entrained to the containment through the ADS-4 in the form of liquid droplet. In the present study, the RELAP5 code is modified with the entrainment correlations obtained from the ATLATS test facility which was constructed at OSU in USA. Furthermore, the characteristics of liquid entrainment through ADS-4 during a 5.08 cm (2 inch) cold leg SBLOCAs in AP1000 was investigated. Results showed that the current liquid entrainment model in RELAP5 underestimated the liquid entrainment quantity through ADS-4 and resulted in a non-conservative safety analysis results.",

keywords = "ADS-4, AP1000, Liquid entrainment, RELAP5, SBLOCA",

author = "Weiwei Wang and Lifang Liu and Zhaoming Meng and Xiaoliang Fu and Wenxi Tian and Yanhua Yang and Guanghui Su and Suizheng Qiu",

year = "2015",

month = oct,

day = "15",

doi = "10.13832/j.jnpe.2015.05.0178",

language = "英语",

volume = "36",

pages = "178--183",

journal = "Hedongli Gongcheng/Nuclear Power Engineering",

issn = "0258-0926",

publisher = "Atomic Energy Press",

number = "5",

}

TY - JOUR

T1 - Analysis of characteristics for liquid entrainment through ADS-4 during a small break LOCA in AP1000

AU - Wang, Weiwei

AU - Liu, Lifang

AU - Meng, Zhaoming

AU - Fu, Xiaoliang

AU - Tian, Wenxi

AU - Yang, Yanhua

AU - Su, Guanghui

AU - Qiu, Suizheng

PY - 2015/10/15

Y1 - 2015/10/15

N2 - In the ADS blowdown phase during SBLOCAs in AP1000, ADS-4 valves open and vent directly to the containment. If a critical vapor velocity is reached in the two hot legs, the liquid phase can be entrained to the containment through the ADS-4 in the form of liquid droplet. In the present study, the RELAP5 code is modified with the entrainment correlations obtained from the ATLATS test facility which was constructed at OSU in USA. Furthermore, the characteristics of liquid entrainment through ADS-4 during a 5.08 cm (2 inch) cold leg SBLOCAs in AP1000 was investigated. Results showed that the current liquid entrainment model in RELAP5 underestimated the liquid entrainment quantity through ADS-4 and resulted in a non-conservative safety analysis results.

AB - In the ADS blowdown phase during SBLOCAs in AP1000, ADS-4 valves open and vent directly to the containment. If a critical vapor velocity is reached in the two hot legs, the liquid phase can be entrained to the containment through the ADS-4 in the form of liquid droplet. In the present study, the RELAP5 code is modified with the entrainment correlations obtained from the ATLATS test facility which was constructed at OSU in USA. Furthermore, the characteristics of liquid entrainment through ADS-4 during a 5.08 cm (2 inch) cold leg SBLOCAs in AP1000 was investigated. Results showed that the current liquid entrainment model in RELAP5 underestimated the liquid entrainment quantity through ADS-4 and resulted in a non-conservative safety analysis results.

KW - ADS-4

KW - AP1000

KW - Liquid entrainment

KW - RELAP5

KW - SBLOCA

UR - https://www.scopus.com/pages/publications/84948449568

U2 - 10.13832/j.jnpe.2015.05.0178

DO - 10.13832/j.jnpe.2015.05.0178

M3 - 文章

AN - SCOPUS:84948449568

SN - 0258-0926

VL - 36

SP - 178

EP - 183

JO - Hedongli Gongcheng/Nuclear Power Engineering

JF - Hedongli Gongcheng/Nuclear Power Engineering

IS - 5

ER -

Analysis of characteristics for liquid entrainment through ADS-4 during a small break LOCA in AP1000

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this