Radiological characterization of spent control rod assemblies

E. Lepel; S. Pratt; D. Robertson; C. Thomas; D. Haggard

doi:10.1007/bf02037615

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 194: Issue 1

Radiological characterization of spent control rod assemblies

Authors:

E. Lepel

E. Lepel Pacific Northwest Laboratory 99352 Richland Washington USA

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S. Pratt

S. Pratt Pacific Northwest Laboratory 99352 Richland Washington USA

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D. Robertson

D. Robertson Pacific Northwest Laboratory 99352 Richland Washington USA

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C. Thomas

C. Thomas Pacific Northwest Laboratory 99352 Richland Washington USA

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D. Haggard

D. Haggard Pacific Northwest Laboratory 99352 Richland Washington USA

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Pages:: 81–94

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 Jul 1995

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02037615

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Abstract

Three different spent control rods were obtained for direct-assay measurements and empirical sampling and analysis. They were: 1) a BWR cruciform control rod, 2) a PWR rod-cluster control assembly, and 3) a burnable poison-rod assembly. The dominant activity of the BWR cruciform control rod and the PWR burnable poison-rod assembly is⁶⁰Co, whereas the PWR rod-cluster control assembly is dominated not only by⁶⁰Co, but also by^108mAg and^110mAg, which are found in the Ag–In–Cd alloy of the absorber rods. The radionuclide inventories calculated for the three spent control rods from the empirical sampling data agree very well with data determined from the two direct assay methodologies. The concentration of^108mAg in the rod-cluster control assembly will have to be considered when these types of spent control rods are prepared for waste disposal.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)