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

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

doi:10.13182/NT97-A35400

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

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

VTT Technical Research Centre of Finland

Lappeenranta-Lahti University of Technology LUT

Research output: Contribution to journal › Article › Scientific › peer-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 language	English
Pages (from-to)	235-243
Journal	Nuclear Technology
Volume	119
Issue number	3
DOIs	https://doi.org/10.13182/NT97-A35400
Publication status	Published - 1997
MoE publication type	A1 Journal article-refereed

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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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AU - Kouhia, Jyrki

AU - Riikonen, Vesa

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N2 - 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.

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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JO - Nuclear Technology

JF - Nuclear Technology

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

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