TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Efficiency of emergency depressurization systems for marine nuclear reactor containments



Full text article ( in russian)

Year

 
2018

Issue

 
386

Volume

 
4

Pages

 
107-116

Caption

 
Efficiency of emergency depressurization systems for marine nuclear reactor containments

Authors

 
Balabin V.P., Kamnev M.A., Kuchin N.L., Tyurikov O.V., Khizbullin A.M.

Keywords

 
LOCA, containment, emergency depressurization systems, sprinkler, barbotage, condensation subsystems, sprayer, efficiency of emergency depressurization subsystems, KUPOL-MT

DOI

 
10.24937/2542-2324-2018-4-386-107-116

Summary

 
Object and purpose of research.This paper studies sprinkler and barbotage components in emergency depressurization systems of marine power plants. The purpose of this study was to confirm their efficiency in the conditions close to LOCA event, and numerical simulations were intended to study operation of above-mentioned subsystems, as well as verify the models of sprinkler system, barbotage device and heat exchanger implemented in the software
Subject matter and methodsThe studies were performed at SPOT ZO large-scale test rig and atmospheric test rig BM 1088. Numerical simulation of sprinkler and barbotage subsystems was performed with help of concentrated-parameter code impelemented in KUPOL-MT software. Pre-test and post-test parameters of experiments at SPOT ZO test rig were carefully analysed, and above-mentioned software models of sprinkler system, barbotage device and heat exchanger software models have been successfully verified.
Main results.The study was performed for four types of sprinklers (sprayers), with determination of their flow rate, dispersion performance, radius and height of plume boundary, diameter, volume and number of droplets in various sections at the radii of sector. These results were used to calculate sprinkler system capacity depending on sprinkler type. Joint operation of barbotage sprinkler and condenser subsystems has also been studied. To this effect, an additional investigation was performed on barbotage system (to obtain barbotage and steam penetration data) and condenser system (to have more details on heat exchanger operation). KUPOL-MT code was used to calculate containment parameters (with operating emergency depressurization systems) for new designs of modular and integrated reactors
Conclusion.The results of this study have proven the efficiency of sprinklers in LOCA event management and were used to verify KUPOL-MT code

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ISSN (print) 2542-2324 / ISSN (online) 2618-8244

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