VERIFICATION OF THE VVER-440 PRESSURE-VESSEL NEUTRON FLUENCE CALCULATION BY ACTIVITY MEASUREMENT

Authors
ILIEVA K APOSTOLOV T PENEV I BELOUSOV S TASKAEV E ANTONOV S PETROVA T TZOKOV P BOJADJIEV Z
Citation
K. Ilieva et al., VERIFICATION OF THE VVER-440 PRESSURE-VESSEL NEUTRON FLUENCE CALCULATION BY ACTIVITY MEASUREMENT, Nuclear Engineering and Design, 160(1-2), 1996, pp. 257-260
Citations number
14
Categorie Soggetti
Nuclear Sciences & Tecnology
Journal title
Nuclear Engineering and Design → ACNP
ISSN journal
00295493
Volume
160
Issue
1-2
Year of publication
1996
Pages
257 - 260
Database
ISI
SICI code
0029-5493(1996)160:1-2<257:VOTVPN>2.0.ZU;2-H
Abstract
To qualify the calculation methodology, measurements of neutron flux r esponses of a WER-440/230 reactor pressure vessel have been carried ou t. The activity of shavings sampled out from the inner pressure vessel wall of Unit 1 of Kozloduy NPP after the 14th cycle has been measured . Calculation of the expected activity at the shaving positions has be en carried out, taking into account the local power distribution. Comp arison of calculated and measured activity values has indicated that t he computed value for the fast neutron fluence is underestimated by up to 20%.