Advanced modelling of complex boron dilution transients in PWRs – Validation of ATHLET 3D-Module against the experiment ROCOM E2.3

2020 ◽  
Vol 367 ◽  
pp. 110776
Author(s):  
E. Diaz Pescador ◽  
A. Grahn ◽  
S. Kliem ◽  
F. Schäfer ◽  
T. Höhne
Keyword(s):  
Boron Dilution

scholarly journals CFD/RELAP5 Coupling Analysis of the ISP No. 43 Boron Dilution Experiment

2021 ◽  
Author(s):  
Linrong Ye ◽  
Hao Yu ◽  
Mingjun Wang ◽  
Qianglong Wang ◽  
Wenxi Tian ◽  
...  
Keyword(s):  
Coupling Analysis ◽  
Dilution Experiment ◽  
Boron Dilution

Analyses of Beyond Design Basis Accident Homogeneous Boron Dilution Scenarios

Kerntechnik ◽  
2015 ◽  
Vol 80 (4) ◽  
pp. 373-378
Author(s):  
A. Keresztúri ◽  
Gy. Hegyi ◽  
Cs. Maráczy ◽  
I. Trosztel ◽  
Á. Tóta ◽  
...  
Keyword(s):  
Design Basis ◽  
Design Basis Accident ◽  
Boron Dilution

On the role of buoyancy in determining the course of PWR boron dilution transients

2013 ◽  
Vol 58 (1-2) ◽  
pp. 430-438 ◽  
Author(s):  
Mark A. Cotton ◽  
Iván F. Galindo Garcia ◽  
Brian P. Axcell
Keyword(s):  
Boron Dilution

PKL Tests on Heterogeneous Inherent Boron Dilution Following SB-LOCA: Applicability to Reactor Scale

2010 ◽  
Author(s):  
Klaus Umminger ◽  
Simon Philipp Schollenberger ◽  
Se´bastien Cornille ◽  
Claire Agnoux ◽  
Delphine Quintin ◽  
...  
Keyword(s):  
Cooling System ◽  
Natural Circulation ◽  
Limited Range ◽  
Test Facility ◽  
Test Results ◽  
Pressurized Water Reactor ◽  
Pressurized Water ◽  
The Core ◽  
Physical Phenomena ◽  
Boron Dilution

In the course of a small break LOCA in a Pressurized Water Reactor (PWR) the flow regime in the Reactor Cooling System (RCS) passes through a number of different phases and the filling level may decrease down to the point where the decay heat is transferred to the secondary side under Reflux-Condenser (RC) conditions. During RC, the steam formed in the core condensates in the Steam Generator (SG) U-tubes. For a limited range of break size and configuration, a continuous accumulation of condensate may cause the formation of boron-depleted slugs. If natural circulation reestablishes, as the RCS is refilled, boron-depleted slugs might be transported to the Reactor Pressure Vessel (RPV) and to the core. To draw conclusions on the risk of boron dilution processes in SB-LOCA transients, two important issues, the limitation of slug size and the onset of Natural Circulation (NC) have to be assessed on the basis of experimental data, as system Thermal-Hydraulic codes are limited in their capability to replicate the complex physical phenomena involved. The OECD PKL III tests were performed at AREVA’s PKL test facility in Erlangen, Germany, to evaluate important phases of the boron dilution transient in PWRs. Several integral and separate effect tests were conducted, addressing the inherent boron dilution issue. The PKL III integral transient test runs provide sufficient data to state major conclusions on the formation and maximum possible size of the boron-depleted slugs, their boron concentration and their transport into the RPV with the restart of NC. Some of these conclusions can be applied to reactor scale. It has to be mentioned, that even though this paper is based on PKL test results obtained within the OECD PKL project, the conclusions of this paper reflect the views of the authors and not necessarily of all the members of the OECD PKL project.

Boron dilution transient simulation analyses in a PWR with neutronics/thermal-hydraulics coupled codes in the NURISP project

2015 ◽  
Vol 84 ◽  
pp. 86-97 ◽  
Author(s):  
G. Jimenez ◽  
J.J. Herrero ◽  
A. Gommlich ◽  
S. Kliem ◽  
D. Cuervo ◽  
...  
Keyword(s):  
Transient Simulation ◽  
Thermal Hydraulics ◽  
Coupled Codes ◽  
Boron Dilution

Modelling of complex boron dilution transients in PWRs—Validation of CFD simulation with ANSYS CFX against the ROCOM E2.3 experiment

2021 ◽  
Vol 372 ◽  
pp. 110938
Author(s):  
A. Grahn ◽  
E. Diaz Pescador ◽  
S. Kliem ◽  
F. Schäfer ◽  
T. Höhne
Keyword(s):  
Cfd Simulation ◽  
Ansys Cfx ◽  
Boron Dilution

Comparative study of a boron dilution scenario in VVER reactors

1999 ◽  
Vol 26 (15) ◽  
pp. 1331-1339 ◽  
Author(s):  
Kostadin N Ivanov ◽  
Ulrich Grundmann ◽  
Siegfried Mittag ◽  
Ulrich Rohde
Keyword(s):  
Comparative Study ◽  
Boron Dilution
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