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A Method of Measuring Decay Heat in Spent Nuclear Fuel using Gamma-ray Spectroscopy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.ORCID iD: 0000-0002-3136-5665
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
2001 (English)In: Waste Management Symposium 2001 (WM'01), 2001Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

In this paper, a method is presented for determining the decay heat in spent nuclear fuel by using gamma-ray spectroscopy. Using this method, the decay heat may be determined within ten minutes per assembly i.e. it is well suited for industrial applications in, for example, an encapsulation facility. The method has been tested and evaluated in the wet Swedish Central Storage for Spent Fuel, CLAB. Although only tested in a wet storage, the method should also be applicable for dry storage.

The objective of developing the method was primarily to investigate possibilities to achieve a fast, robust and reasonable accurate determination of decay heat by gamma-ray measurements on fuel assemblies. Such a method could also be for verification of burnup and cooling time, for safeguard purposes prior to encapsulation, (1).

So far, measurements and calculations on 35 BWR- and 34 PWR-assemblies, with various nuclear data, have been performed. The test measurements, using preliminary measuring equipment, have shown that the decay heat may be determined within an uncertainty of 3%.

Place, publisher, year, edition, pages
2001.
National Category
Subatomic Physics
Research subject
Applied Nuclear Physics
Identifiers
URN: urn:nbn:se:uu:diva-161472OAI: oai:DiVA.org:uu-161472DiVA: diva2:456183
Conference
Waste Management Symposium -01 (WM'01); Tucson, Arizona, USA; February 25 - March 1, 2001
Available from: 2011-11-14 Created: 2011-11-14 Last updated: 2013-10-31Bibliographically approved

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Jansson, PeterHåkansson, AneJacobsson, StaffanBäcklin, Anders

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