VEERA facility for studies of nuclear safety in VVER type reactors

Markku Puustinen, Jari Tuunanen, Pekka Raussi

Research output: Book/ReportReportProfessional

Abstract

The VEERA facility was built in 1987 for experiments that simulate soluble neutron poison (boric acid) behaviour in a pressurized water reactor (PWR) during the long-term cooling period of loss-of-coolant accidents (LOCAs). The experiments provided insight especially into the processes of concentration, mixing and possible crystallization of boric acid in the core region of a PWR. In 1993 the facility was modified in order to use it for studies of the reflooding phenomenon. The results of the reflood experiments will be used as a data base for testing the capability of the reflood models of different computer codes. The VEERA facility in its original and modified forms is described in this report. Details of the geometry and dimensions of the components are given. This data is needed as a geometrical boundary condition in input deck preparation for thermal hydraulic analysis. The instrumentation and the data acquisition system are described so that the applicability of the facility and the accuracy of the measurements for different types of experiments can be evaluated. Initial and boundary conditions of the experiments and the principal test procedures are also summarized.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages35
ISBN (Print)951-38-4733-0
Publication statusPublished - 1994
MoE publication typeNot Eligible

Publication series

NameVTT Tiedotteita - Meddelanden - Research Notes
PublisherVTT
No.1618
ISSN (Print)1235-0605
ISSN (Electronic)1455-0865

Fingerprint

safety
reactors
pressurized water reactors
boric acids
loss of coolant
boundary conditions
poisons
data bases
accidents
hydraulics
data acquisition
crystallization
computer programs
cooling
neutrons
preparation
geometry

Keywords

  • nuclear reactors
  • VVER
  • water-cooled reactors
  • safety
  • test equipment
  • VEERA
  • instrumentation
  • data acquisition
  • loss-of-coolant accident
  • reflooding

Cite this

Puustinen, M., Tuunanen, J., & Raussi, P. (1994). VEERA facility for studies of nuclear safety in VVER type reactors. Espoo: VTT Technical Research Centre of Finland. VTT Tiedotteita - Meddelanden - Research Notes, No. 1618
Puustinen, Markku ; Tuunanen, Jari ; Raussi, Pekka. / VEERA facility for studies of nuclear safety in VVER type reactors. Espoo : VTT Technical Research Centre of Finland, 1994. 35 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1618).
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abstract = "The VEERA facility was built in 1987 for experiments that simulate soluble neutron poison (boric acid) behaviour in a pressurized water reactor (PWR) during the long-term cooling period of loss-of-coolant accidents (LOCAs). The experiments provided insight especially into the processes of concentration, mixing and possible crystallization of boric acid in the core region of a PWR. In 1993 the facility was modified in order to use it for studies of the reflooding phenomenon. The results of the reflood experiments will be used as a data base for testing the capability of the reflood models of different computer codes. The VEERA facility in its original and modified forms is described in this report. Details of the geometry and dimensions of the components are given. This data is needed as a geometrical boundary condition in input deck preparation for thermal hydraulic analysis. The instrumentation and the data acquisition system are described so that the applicability of the facility and the accuracy of the measurements for different types of experiments can be evaluated. Initial and boundary conditions of the experiments and the principal test procedures are also summarized.",
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Puustinen, M, Tuunanen, J & Raussi, P 1994, VEERA facility for studies of nuclear safety in VVER type reactors. VTT Tiedotteita - Meddelanden - Research Notes, no. 1618, VTT Technical Research Centre of Finland, Espoo.

VEERA facility for studies of nuclear safety in VVER type reactors. / Puustinen, Markku; Tuunanen, Jari; Raussi, Pekka.

Espoo : VTT Technical Research Centre of Finland, 1994. 35 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1618).

Research output: Book/ReportReportProfessional

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Puustinen M, Tuunanen J, Raussi P. VEERA facility for studies of nuclear safety in VVER type reactors. Espoo: VTT Technical Research Centre of Finland, 1994. 35 p. (VTT Tiedotteita - Meddelanden - Research Notes; No. 1618).