Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001

Martin Bojinov, Petri Kinnunen, Arto Kukkonen, Timo Laitinen, Marketta Mattila, Kari Mäkelä, Timo Saario, Pekka Sirkiä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

Abstract

Increased activity incorporation in primary circuit oxides increases the risks of radiation exposure to the maintenance personnel. In order to find out the factors contributing to activity incorporation and to be able to control them, stainless steel samples with different pre-treatments are exposed to the primary coolant at the cold-leg temperature at Loviisa unit 1 since February 2000. Since then, samples have been regularly removed and replaced with new samples. The activity of the removed samples has been determined, and the oxide films on the samples have been analysed in order to find correlations between the properties of the oxide films and activity incorporation. SEM, SIMS and GDOES techniques have been used for the analysis. An additional task of the project is to find the most suitable surface analysis method for oxide films formed in VVER coolant conditions. In this report the analysis results are given together with the HTWC monitoring data obtained at the plant during the fuel cycle 2000-2001.
Original languageEnglish
Title of host publicationPlant Life Management
Subtitle of host publicationProgress for structural integrity
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages137-151
ISBN (Electronic)951-38-6281-X
ISBN (Print)951-38-6280-1
Publication statusPublished - 2003
MoE publication typeB3 Non-refereed article in conference proceedings
EventPlant Life Management: Progress for structural integrity - Espoo, Finland
Duration: 1 Jan 20021 Jan 2002

Publication series

NameVTT Symposium
PublisherVTT
Number227
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

Seminar

SeminarPlant Life Management
CountryFinland
CityEspoo
Period1/01/021/01/02

Fingerprint

Coolants
Oxide films
Stainless steel
Surface analysis
Secondary ion mass spectrometry
Personnel
Radiation
Scanning electron microscopy
Oxides
Networks (circuits)
Monitoring
Temperature

Cite this

Bojinov, M., Kinnunen, P., Kukkonen, A., Laitinen, T., Mattila, M., Mäkelä, K., ... Sirkiä, P. (2003). Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001. In Plant Life Management: Progress for structural integrity (pp. 137-151). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 227
Bojinov, Martin ; Kinnunen, Petri ; Kukkonen, Arto ; Laitinen, Timo ; Mattila, Marketta ; Mäkelä, Kari ; Saario, Timo ; Sirkiä, Pekka. / Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001. Plant Life Management: Progress for structural integrity. Espoo : VTT Technical Research Centre of Finland, 2003. pp. 137-151 (VTT Symposium; No. 227).
@inproceedings{d3ca926d20bf4f0e99b46abbdf5ec791,
title = "Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001",
abstract = "Increased activity incorporation in primary circuit oxides increases the risks of radiation exposure to the maintenance personnel. In order to find out the factors contributing to activity incorporation and to be able to control them, stainless steel samples with different pre-treatments are exposed to the primary coolant at the cold-leg temperature at Loviisa unit 1 since February 2000. Since then, samples have been regularly removed and replaced with new samples. The activity of the removed samples has been determined, and the oxide films on the samples have been analysed in order to find correlations between the properties of the oxide films and activity incorporation. SEM, SIMS and GDOES techniques have been used for the analysis. An additional task of the project is to find the most suitable surface analysis method for oxide films formed in VVER coolant conditions. In this report the analysis results are given together with the HTWC monitoring data obtained at the plant during the fuel cycle 2000-2001.",
author = "Martin Bojinov and Petri Kinnunen and Arto Kukkonen and Timo Laitinen and Marketta Mattila and Kari M{\"a}kel{\"a} and Timo Saario and Pekka Sirki{\"a}",
note = "Project code: H2SU00363",
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language = "English",
isbn = "951-38-6280-1",
series = "VTT Symposium",
publisher = "VTT Technical Research Centre of Finland",
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pages = "137--151",
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Bojinov, M, Kinnunen, P, Kukkonen, A, Laitinen, T, Mattila, M, Mäkelä, K, Saario, T & Sirkiä, P 2003, Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001. in Plant Life Management: Progress for structural integrity. VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 227, pp. 137-151, Plant Life Management, Espoo, Finland, 1/01/02.

Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001. / Bojinov, Martin; Kinnunen, Petri; Kukkonen, Arto; Laitinen, Timo; Mattila, Marketta; Mäkelä, Kari; Saario, Timo; Sirkiä, Pekka.

Plant Life Management: Progress for structural integrity. Espoo : VTT Technical Research Centre of Finland, 2003. p. 137-151 (VTT Symposium; No. 227).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001

AU - Bojinov, Martin

AU - Kinnunen, Petri

AU - Kukkonen, Arto

AU - Laitinen, Timo

AU - Mattila, Marketta

AU - Mäkelä, Kari

AU - Saario, Timo

AU - Sirkiä, Pekka

N1 - Project code: H2SU00363

PY - 2003

Y1 - 2003

N2 - Increased activity incorporation in primary circuit oxides increases the risks of radiation exposure to the maintenance personnel. In order to find out the factors contributing to activity incorporation and to be able to control them, stainless steel samples with different pre-treatments are exposed to the primary coolant at the cold-leg temperature at Loviisa unit 1 since February 2000. Since then, samples have been regularly removed and replaced with new samples. The activity of the removed samples has been determined, and the oxide films on the samples have been analysed in order to find correlations between the properties of the oxide films and activity incorporation. SEM, SIMS and GDOES techniques have been used for the analysis. An additional task of the project is to find the most suitable surface analysis method for oxide films formed in VVER coolant conditions. In this report the analysis results are given together with the HTWC monitoring data obtained at the plant during the fuel cycle 2000-2001.

AB - Increased activity incorporation in primary circuit oxides increases the risks of radiation exposure to the maintenance personnel. In order to find out the factors contributing to activity incorporation and to be able to control them, stainless steel samples with different pre-treatments are exposed to the primary coolant at the cold-leg temperature at Loviisa unit 1 since February 2000. Since then, samples have been regularly removed and replaced with new samples. The activity of the removed samples has been determined, and the oxide films on the samples have been analysed in order to find correlations between the properties of the oxide films and activity incorporation. SEM, SIMS and GDOES techniques have been used for the analysis. An additional task of the project is to find the most suitable surface analysis method for oxide films formed in VVER coolant conditions. In this report the analysis results are given together with the HTWC monitoring data obtained at the plant during the fuel cycle 2000-2001.

M3 - Conference article in proceedings

SN - 951-38-6280-1

T3 - VTT Symposium

SP - 137

EP - 151

BT - Plant Life Management

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Bojinov M, Kinnunen P, Kukkonen A, Laitinen T, Mattila M, Mäkelä K et al. Activity incorporation into stainless steel samples in primary coolant at Loviisa 1 during the fuel cycle 2000-2001. In Plant Life Management: Progress for structural integrity. Espoo: VTT Technical Research Centre of Finland. 2003. p. 137-151. (VTT Symposium; No. 227).