Publication result detail

Simplified modeling of natural circulation during Station Blackout with MELCOR

MIČIAN, P.; ČERNÝ, T.; KATOVSKÝ, K.

Original Title

Simplified modeling of natural circulation during Station Blackout with MELCOR

English Title

Simplified modeling of natural circulation during Station Blackout with MELCOR

Type

Paper in proceedings (conference paper)

Original Abstract

Station blackout is typical high pressure beyond design basis accident, in which natural countercurrent circulation occurs. If all of the alternate current power sources failed, removal of decay heat from the core is possible by natural circulation through hot leg and steam generator. In this paper a simplified approach to the modeling of the natural circulation during SBO at APR1400 reactor is presented. The proposed model takes into account the physical characteristics of the reactor coolant system, including the core behaviour and passive safety systems, like Safety Injection Tanks, Pilot Operated Safety Relieve Valves and safety valves in the secondary side. Main goal of this work is to prove natural circulation benefit, that is delay of the core damage. The paper concludes with a discussion of the limitations of the model and potential improvements for future work in this field.

English abstract

Station blackout is typical high pressure beyond design basis accident, in which natural countercurrent circulation occurs. If all of the alternate current power sources failed, removal of decay heat from the core is possible by natural circulation through hot leg and steam generator. In this paper a simplified approach to the modeling of the natural circulation during SBO at APR1400 reactor is presented. The proposed model takes into account the physical characteristics of the reactor coolant system, including the core behaviour and passive safety systems, like Safety Injection Tanks, Pilot Operated Safety Relieve Valves and safety valves in the secondary side. Main goal of this work is to prove natural circulation benefit, that is delay of the core damage. The paper concludes with a discussion of the limitations of the model and potential improvements for future work in this field.

Keywords

station blackout; natural circulation; MELCOR; beyond design basis accident; design extension conditions; APR1400

Key words in English

station blackout; natural circulation; MELCOR; beyond design basis accident; design extension conditions; APR1400

Authors

MIČIAN, P.; ČERNÝ, T.; KATOVSKÝ, K.

RIV year

2024

Released

28.06.2023

Publisher

Institute of Electrical and Electronics Engineers - IEEE

Location

Piscataway, New Jersey, USA/Brno, Czech Republic

ISBN

979-8-3503-3593-4

Book

2023 23rd International Scientific Conference on Electric Power Engineering (EPE)

Edition

1

ISBN

2376-5631

Periodical

Proceedings of the ... International Scientific Conference on Electric Power Engineering

Volume

23

Number

1

State

United States of America

Pages count

4

URL

https://ieeexplore.ieee.org/document/10149298

BibTex

@inproceedings{BUT183603,
  author="Peter {Mičian} and Tomáš {Černý} and Karel {Katovský}",
  title="Simplified modeling of natural circulation during Station Blackout with MELCOR",
  booktitle="2023 23rd International Scientific Conference on Electric Power Engineering (EPE)",
  year="2023",
  series="1",
  journal="Proceedings of the ... International Scientific Conference on Electric Power Engineering",
  volume="23",
  number="1",
  pages="4",
  publisher="Institute of Electrical and Electronics Engineers - IEEE",
  address="Piscataway, New Jersey, USA/Brno, Czech Republic",
  doi="10.1109/EPE58302.2023.10149298",
  isbn="979-8-3503-3593-4",
  issn="2376-5623",
  url="https://ieeexplore.ieee.org/document/10149298"
}