Abstract

Plant life management needs a reliable estimation of radiation field parameters, including their uncertainty, to avoid the use of conservative approaches. The particular objectives of the REDOS project [1] are the improvements of the RPV monitoring, the improvement of the neutron-gamma calculation methodologies through the LR-0 engineering benchmarks for WWER-1000 and WWER-440, and the accurate determination of radiation field parameters in the vicinity and over the thickness of the RPV. This paper is mainly devoted to the comparison and analysis of the experimental and calculated LR-0 data. The LR-0 benchmark data consist of neutron spectra (WWER-440 Mock-ups) and neutron + photon spectra (WWER-1000 Mock-up) in several points from the barrel simulator to the outer surface of RPV and evaluated integral fluxes, space-energy indices, like the spectral indices and attenuation factors in measuring points.

Issue Section:
Research Papers
Keywords:
reactor pressure vessel, dosimetry, neutron and photon spectra measurement, transport calculations, WWER-1000

References

1.
REDOS, Reactor Dosimetry: Accurate Determination and Benchmarking of Radiation Field Parameters, Relevant for Reactor Pressure Vessel Monitoring, EURATOM Programme, Call 2000∕C 294∕04.
2.
“WWER-1000 Mock-up Experiment in the LR-0 Reactor, Mock-up Description and Experimental Data,” REDOS∕R(01)∕December 2002∕Issue 01, (restricted distribution).
3.
Ošmera
,
B.
 and
Zaritsky
,
S. M.
, “
Review of Experimental Data for WWER Reactor Pressure Vessel Dosimetry Benchmarking
,”
Proceedings of the 11th International Symposium on Reactor Dosimetry
,
Brussels
, August
2002
.
4.
Ošmera
,
B.
,
Kyncl
,
J.
,
Mařík
,
M.
,
Cvachovec
,
F.
,
Smutný
,
V.
, and
Králík
,
M.
, “
Gamma Ray Exposure of WWER-1000 Reactor Pressure Vessel. The Gamma Ray Spectra Measurement in Engineering Benchmark
,”
Proceedings of the 11th International Symposium on Reactor Dosimetry
,
Brussels
. August
2002
.
5.
Bureš
,
Z.
,
Cvachovec
,
J.
,
Cvachovec
,
F.
,
Celeda
,
P.
, and
Ošmera
,
B.
, “
Multiparameter Multichannel Analyzer System for Characterization of Mixed Neutron Gamma Field in the Experimental Reactor LR-0
,”
Proceedings of the 11th International Symposium on Reactor Dosimetry
,
Brussels
, August
2002
.
6.
“Deep Penetration Benchmarking. Conclusions and Recommendations,” REDOS∕R(07) ∕2004∕issue 1, (restricted distribution).
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