STUDY OF TWO-DIMENSIONAL EFFECTS IN THE CORE OF A LIGHT WATER REACTOR DURING THE ECC'S PHASE FOLLOWING A LOSS OF COOLANT ACCIDENT
In a PWR core the power is not identical from one assembly to another and this may result in 2D phenomena which have to be studied in order to know whether it is necessary to take them into account in safety codes or not and, if yes, to define the simplest models suitable for that. An experimental programme has been conducted during which the main aspects were investigated. Boil-up and reflood tests (constant and oscillating flow rate) have been performed which show the effect of various parameters and somewhat clarify the problem of fall-back and cross-flows as well as their consequences on quench front propagation and heat transfer in the dry region.
Bibliographic Reference: EUR 10076 EN (1985) MF, 198 P., 450 BLOW-UP COPY BFR 990, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989123121800 / Last updated on: 1987-01-01
Available languages: en