RELAP5 analysis of gravity-driven core-cooling experiments with PACTEL

Reijo Munther, Juhani Vihavainen, Heikki Kalli, Jyrki Kouhia, Vesa Riikonen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The RELAP5 calculation results for a series of gravity-driven emergency core-cooling (ECC) experiments with the parallel channel test loop (PACTEL) facility are provided. The simulated accident was a small-break loss-of-coolant accident with a break in one hot leg of the three loops of the facility. The ECC flow was provided from a core makeup tank (CMT) located at a higher elevation than the main part of the primary system. The CMT was pressurized with pipings from the pressurizer and a cold leg. The tests indicate that rapid condensation in the CMT influences the ECC flow. The experimental results are numerically analyzed using the RELAP5/MOD3.1 code. The calculations show good agreement with the tests except in the modeling of rapid condensation.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalNuclear Technology
Volume119
Issue number3
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

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Gravitation
Cooling
Condensation
Loss of coolant accidents
Experiments
Accidents

Cite this

Munther, R., Vihavainen, J., Kalli, H., Kouhia, J., & Riikonen, V. (1997). RELAP5 analysis of gravity-driven core-cooling experiments with PACTEL. Nuclear Technology, 119(3), 235-243. https://doi.org/10.13182/NT97-A35400
Munther, Reijo ; Vihavainen, Juhani ; Kalli, Heikki ; Kouhia, Jyrki ; Riikonen, Vesa. / RELAP5 analysis of gravity-driven core-cooling experiments with PACTEL. In: Nuclear Technology. 1997 ; Vol. 119, No. 3. pp. 235-243.
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abstract = "The RELAP5 calculation results for a series of gravity-driven emergency core-cooling (ECC) experiments with the parallel channel test loop (PACTEL) facility are provided. The simulated accident was a small-break loss-of-coolant accident with a break in one hot leg of the three loops of the facility. The ECC flow was provided from a core makeup tank (CMT) located at a higher elevation than the main part of the primary system. The CMT was pressurized with pipings from the pressurizer and a cold leg. The tests indicate that rapid condensation in the CMT influences the ECC flow. The experimental results are numerically analyzed using the RELAP5/MOD3.1 code. The calculations show good agreement with the tests except in the modeling of rapid condensation.",
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Munther, R, Vihavainen, J, Kalli, H, Kouhia, J & Riikonen, V 1997, 'RELAP5 analysis of gravity-driven core-cooling experiments with PACTEL', Nuclear Technology, vol. 119, no. 3, pp. 235-243. https://doi.org/10.13182/NT97-A35400

RELAP5 analysis of gravity-driven core-cooling experiments with PACTEL. / Munther, Reijo; Vihavainen, Juhani; Kalli, Heikki; Kouhia, Jyrki; Riikonen, Vesa.

In: Nuclear Technology, Vol. 119, No. 3, 1997, p. 235-243.

Research output: Contribution to journalArticleScientificpeer-review

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AB - The RELAP5 calculation results for a series of gravity-driven emergency core-cooling (ECC) experiments with the parallel channel test loop (PACTEL) facility are provided. The simulated accident was a small-break loss-of-coolant accident with a break in one hot leg of the three loops of the facility. The ECC flow was provided from a core makeup tank (CMT) located at a higher elevation than the main part of the primary system. The CMT was pressurized with pipings from the pressurizer and a cold leg. The tests indicate that rapid condensation in the CMT influences the ECC flow. The experimental results are numerically analyzed using the RELAP5/MOD3.1 code. The calculations show good agreement with the tests except in the modeling of rapid condensation.

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