"Concrete benchmark" experiment as support to ex-vessel lwr surveitllance dosimetry

Hamid Aït Abderrghim; Pierre J. D'Hondt; Patrice Risch; Joseph B. Oeyen; Philippe Bioux

doi:10.1520/STP15133S

"Concrete benchmark" experiment as support to ex-vessel lwr surveitllance dosimetry

Hamid Aït Abderrghim, Pierre J. D'Hondt, Patrice Risch, Joseph B. Oeyen, Philippe Bioux

Research output › peer-review

Abstract

The analysis of DOEL-I in-vessel and ex-vessel neutron dosimetry, using the DOT 3.5 Sn code coupled with the VITAMIN-C cross-section library, showed the same C/E values for different detectors at the surveillance capsule and the ex-vessel cavity positions. These results seem to be in contradiction with those obtained in several benchmark experiments (PCA, PSF, VENUS ...) that used the same computational tools. Indeed a strong decreasing radial trend of the C/E was observed, partly explained by the overestimation of the iron inelastic scattering. The flat trend seen in DOEL-I could be explained by compensating errors in the calculation such as the backscattering due to the concrete walls outside the cavity. The "Concrete Benchmark" experiment has been designed to judge the ability of this calculational method to treat the backscattering. This paper describes the "Concrete Benchmark" experiment, the measured and computed neutron dosimetry results and their comparison. This preliminary analysis seems to indicate an overestimation of the backscattering effect in the calculations.

Original language	English
Title of host publication	Reactor Dosimetry
Editors	Harry Farrar, E. Parvin Lippincott, John G. Williams, David W. Vehar
Publisher	ASTM International
Pages	392-400
Number of pages	9
ISBN (Electronic)	9780803118997
DOIs	https://doi.org/10.1520/STP15133S
State	Published - 1994
Event	1993 - 8th ASTM-EURATOM symposium on reactor dosimetry - Vail Duration: 29 Aug 1993 → 3 Sep 1993

Publication series

Name	ASTM Special Technical Publication
Volume	STP 1228
ISSN (Print)	0066-0558

Conference

Conference	1993 - 8th ASTM-EURATOM symposium on reactor dosimetry
Country/Territory	United States
City	Vail
Period	1993-08-29 → 1993-09-03

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1520/STP15133S

Cite this

Abderrghim, H. A., D'Hondt, P. J., Risch, P., Oeyen, J. B., & Bioux, P. (1994). "Concrete benchmark" experiment as support to ex-vessel lwr surveitllance dosimetry. In H. Farrar, E. P. Lippincott, J. G. Williams, & D. W. Vehar (Eds.), Reactor Dosimetry (pp. 392-400). (ASTM Special Technical Publication; Vol. STP 1228). ASTM International. https://doi.org/10.1520/STP15133S

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abstract = "The analysis of DOEL-I in-vessel and ex-vessel neutron dosimetry, using the DOT 3.5 Sn code coupled with the VITAMIN-C cross-section library, showed the same C/E values for different detectors at the surveillance capsule and the ex-vessel cavity positions. These results seem to be in contradiction with those obtained in several benchmark experiments (PCA, PSF, VENUS ...) that used the same computational tools. Indeed a strong decreasing radial trend of the C/E was observed, partly explained by the overestimation of the iron inelastic scattering. The flat trend seen in DOEL-I could be explained by compensating errors in the calculation such as the backscattering due to the concrete walls outside the cavity. The {"}Concrete Benchmark{"} experiment has been designed to judge the ability of this calculational method to treat the backscattering. This paper describes the {"}Concrete Benchmark{"} experiment, the measured and computed neutron dosimetry results and their comparison. This preliminary analysis seems to indicate an overestimation of the backscattering effect in the calculations.",

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author = "Abderrghim, {Hamid A{\"i}t} and D'Hondt, {Pierre J.} and Patrice Risch and Oeyen, {Joseph B.} and Philippe Bioux",

year = "1994",

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Abderrghim, HA, D'Hondt, PJ, Risch, P, Oeyen, JB & Bioux, P 1994, "Concrete benchmark" experiment as support to ex-vessel lwr surveitllance dosimetry. in H Farrar, EP Lippincott, JG Williams & DW Vehar (eds), Reactor Dosimetry. ASTM Special Technical Publication, vol. STP 1228, ASTM International, pp. 392-400, 1993 - 8th ASTM-EURATOM symposium on reactor dosimetry, Vail, Colorado, United States, 1993-08-29. https://doi.org/10.1520/STP15133S

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AU - Oeyen, Joseph B.

AU - Bioux, Philippe

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N2 - The analysis of DOEL-I in-vessel and ex-vessel neutron dosimetry, using the DOT 3.5 Sn code coupled with the VITAMIN-C cross-section library, showed the same C/E values for different detectors at the surveillance capsule and the ex-vessel cavity positions. These results seem to be in contradiction with those obtained in several benchmark experiments (PCA, PSF, VENUS ...) that used the same computational tools. Indeed a strong decreasing radial trend of the C/E was observed, partly explained by the overestimation of the iron inelastic scattering. The flat trend seen in DOEL-I could be explained by compensating errors in the calculation such as the backscattering due to the concrete walls outside the cavity. The "Concrete Benchmark" experiment has been designed to judge the ability of this calculational method to treat the backscattering. This paper describes the "Concrete Benchmark" experiment, the measured and computed neutron dosimetry results and their comparison. This preliminary analysis seems to indicate an overestimation of the backscattering effect in the calculations.

AB - The analysis of DOEL-I in-vessel and ex-vessel neutron dosimetry, using the DOT 3.5 Sn code coupled with the VITAMIN-C cross-section library, showed the same C/E values for different detectors at the surveillance capsule and the ex-vessel cavity positions. These results seem to be in contradiction with those obtained in several benchmark experiments (PCA, PSF, VENUS ...) that used the same computational tools. Indeed a strong decreasing radial trend of the C/E was observed, partly explained by the overestimation of the iron inelastic scattering. The flat trend seen in DOEL-I could be explained by compensating errors in the calculation such as the backscattering due to the concrete walls outside the cavity. The "Concrete Benchmark" experiment has been designed to judge the ability of this calculational method to treat the backscattering. This paper describes the "Concrete Benchmark" experiment, the measured and computed neutron dosimetry results and their comparison. This preliminary analysis seems to indicate an overestimation of the backscattering effect in the calculations.

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