Dosimetry assessments for the reactor pressure vessel and core barrel in UK pressurized water reactor (PWR) plant

D.A. Thornton, D.A. Allen, A.P. Huggon, D.J. Picton, A.T. Robinson, R.J. Steadman, Tom Seren, M. Lipponen, Tommi Kekki

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

2 Citations (Scopus)

Abstract

Specimens for the Sizewell B reactor pressure vessel (RPV) inservice steels surveillance program are irradiated inside eight capsules located within the reactor pressure vessel and loaded prior to commissioning. The periodic removal of these capsules and testing of their contents provides material properties data at intervals during the lifetime of the plant. Neutron activation measurements and radiation transport calculations play an essential role in assessing the neutron exposure of the specimens and RPV. Following the most recent withdrawal, seven capsules have now been removed covering nine cycles of reactor operation. This paper summarizes the dosimetry results of the Sizewell B surveillance program obtained to date. In addition to an overview of the calculational methodology it includes a review of the measurements. Finally, it describes an extension of the methodology to provide dosimetry recommendations for the core barrel and briefly discusses the results that were obtained
Original languageEnglish
Pages (from-to)1-14
JournalJournal of ASTM International
Volume9
Issue number4
DOIs
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
Event14th International Symposium on Reactor Dosimetry - Bretton Woods, NH, United States
Duration: 22 May 201127 May 2011

Fingerprint

Pressurized water reactors
Pressure vessels
Dosimetry
Capsules
Neutrons
Pressure
Reactor operation
Water
Steel structures
Materials properties
Steel
Chemical activation
Radiation
Testing

Keywords

  • Core barrel
  • MCBEND
  • Monte Carlo
  • pressurized water reactor
  • reactor pressure vessel
  • surveillance dosimetry

Cite this

Thornton, D.A. ; Allen, D.A. ; Huggon, A.P. ; Picton, D.J. ; Robinson, A.T. ; Steadman, R.J. ; Seren, Tom ; Lipponen, M. ; Kekki, Tommi. / Dosimetry assessments for the reactor pressure vessel and core barrel in UK pressurized water reactor (PWR) plant. In: Journal of ASTM International. 2012 ; Vol. 9, No. 4. pp. 1-14.
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abstract = "Specimens for the Sizewell B reactor pressure vessel (RPV) inservice steels surveillance program are irradiated inside eight capsules located within the reactor pressure vessel and loaded prior to commissioning. The periodic removal of these capsules and testing of their contents provides material properties data at intervals during the lifetime of the plant. Neutron activation measurements and radiation transport calculations play an essential role in assessing the neutron exposure of the specimens and RPV. Following the most recent withdrawal, seven capsules have now been removed covering nine cycles of reactor operation. This paper summarizes the dosimetry results of the Sizewell B surveillance program obtained to date. In addition to an overview of the calculational methodology it includes a review of the measurements. Finally, it describes an extension of the methodology to provide dosimetry recommendations for the core barrel and briefly discusses the results that were obtained",
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Thornton, DA, Allen, DA, Huggon, AP, Picton, DJ, Robinson, AT, Steadman, RJ, Seren, T, Lipponen, M & Kekki, T 2012, 'Dosimetry assessments for the reactor pressure vessel and core barrel in UK pressurized water reactor (PWR) plant', Journal of ASTM International, vol. 9, no. 4, pp. 1-14. https://doi.org/10.1520/JAI104016

Dosimetry assessments for the reactor pressure vessel and core barrel in UK pressurized water reactor (PWR) plant. / Thornton, D.A.; Allen, D.A.; Huggon, A.P.; Picton, D.J.; Robinson, A.T.; Steadman, R.J.; Seren, Tom; Lipponen, M.; Kekki, Tommi.

In: Journal of ASTM International, Vol. 9, No. 4, 2012, p. 1-14.

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

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AU - Thornton, D.A.

AU - Allen, D.A.

AU - Huggon, A.P.

AU - Picton, D.J.

AU - Robinson, A.T.

AU - Steadman, R.J.

AU - Seren, Tom

AU - Lipponen, M.

AU - Kekki, Tommi

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AB - Specimens for the Sizewell B reactor pressure vessel (RPV) inservice steels surveillance program are irradiated inside eight capsules located within the reactor pressure vessel and loaded prior to commissioning. The periodic removal of these capsules and testing of their contents provides material properties data at intervals during the lifetime of the plant. Neutron activation measurements and radiation transport calculations play an essential role in assessing the neutron exposure of the specimens and RPV. Following the most recent withdrawal, seven capsules have now been removed covering nine cycles of reactor operation. This paper summarizes the dosimetry results of the Sizewell B surveillance program obtained to date. In addition to an overview of the calculational methodology it includes a review of the measurements. Finally, it describes an extension of the methodology to provide dosimetry recommendations for the core barrel and briefly discusses the results that were obtained

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