Authors:
W. Knaepen Shell Research B. V. P.O. Box 38000 NL-1030 BN Amsterdam (The Netherlands)

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W. Bergwerf Shell Research B. V. P.O. Box 38000 NL-1030 BN Amsterdam (The Netherlands)

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P. Lancée Nederlandse Aardolie Maatschappij B. V. (NAM) P.O. Box 28000 NL-9400 HH Assen (The Netherlands)

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W. Van Dijk TNO Radiological Service P.O. Box 9034 NL-6800 ES Arnhem (The Netherlands)

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J. Jansen Rijksuniversiteit Groningen Kernfysisch Versneller Instituut (KVI) Zernikelaan 25 NL-9747 AA Groningen (The Netherlands)

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R. Janssen RTD B. V. P.O. Box 10065 NL-3004 AB Rotterdam (The Netherlands)

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W. Kiezenberg KEMA Nederland B. V. P.O. Box 9035 NL-6800 ET Arnhem (The Netherlands)

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R. Van Sluijs DSM Research B. V. Radioisotope Applications & Support P.O. Box 18 NL-6160 MD Geleen (The Netherlands)

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M. Tijsmans Rijksinstituut voor Volksgezondheid en Milieuhygiëne (RIVM) Laboratorium voor Stralingsonderzoek P.O. Box, 1 NL-3720 BA Bilthoven (The Netherlands)

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K. Volkers Delft University of Technology Interfacultair Reactor Instituut (IRI) Mekelweg 15 Nl-2629 JB Delft (The Netherlands)

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P. Voors Netherlands Energy Research Foundation (ECN) P.O. Box 1 NL-1755 ZG Petten (The Netherlands)

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Abstract  

Gas and oil companies frequently encounter build up of Naturally Occurring Radioactive Material (NORM) in their production and processing facilities. In the Netherlands NORM is subject to strict national regulations and, consequently, installations have to be screened on a regular basis. The availability of accurate and reliable NORM sampling and analysis techniques is therefore essential. A number of years ago, the Nederlandse Aardolie Maatschappij B.V. (NAM) actively initiated an investigation on analysis techniques for NORM samples from gas and oil companies. Within this framework, Shell Research Amsterdam organized a four-stage interlaboratory test programme in which representative samples of increasing complexity were analyzed by a number of Dutch institutes. Whereas a large spread in results was observed in the first stage, results in the last stage deviated less than ±10% from the values certified by an independent referee institute, even for comple, sludge samples. It was found that in particular the use of different values for the -yields and branching ratios amongst the institutes was responsible for the initial spread.

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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)

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