SURVEILLANCE OF NUCLEAR-THERMOHYDRAULIC STABILITY IN BWR OPERATION

Citation
R. Seepolt et O. Lorenz, SURVEILLANCE OF NUCLEAR-THERMOHYDRAULIC STABILITY IN BWR OPERATION, Nuclear Engineering and Design, 159(2-3), 1995, pp. 183-188
Citations number
2
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Nuclear Sciences & Tecnology
ISSN journal
0029-5493
Volume
159
Issue
2-3
Year of publication
1995
Pages
183 - 188
Database
ISI
SICI code
0029-5493(1995)159:2-3<183:SONSIB>2.0.ZU;2-U
Abstract
A concept of a survey of the nuclear-thermohydraulic stability during operation of large modern boiling water reactors is presented. The con cept incorporates detailed measurements of the stability boundary as w ell as accompanying evaluations of the stability margin during the ope rating reactor cycle. An automatic system to avoid unstable power flow conditions by immediate control rod insertion is an additional elemen t of the concept. The proper functioning of this system in a practical event was demonstrated. Thus, inadvertent unstable reactor operating conditions could be avoided in all completed cycles by means of reacto r and core loading design together with the enforced surveillance conc ept.