Reflooding experiments in the REWET-1 single pin facility
Description
A series of about 200 reflooding tests was carried out in the REWET-1 single pin facility. The primary objective of these tests was to improve the understanding of the basic phenomena of the rewetting process. As a specific feature, the effect of non-condensible gas (nitrogen) on the rewetting process was investigated. The relation between heating power and mass flow rate had a strong effect on rewetting velocity and quenching time while the initial rod temperature and the coolant temperature had a much weaker effect. Typical values of the heat transfer coefficient calculated from measured temperature data were 4...25 W/m2K for steam flow, 20...80 W/m2K for dispersed flow, and 50...350 W/m2K for film boiling before quenching. Reflooding experiments are being continued in a facility (REWET-II) featuring a full length bundle of 19 fuel rod simulators
Additional details
Additional titles
- Augmented title (English)
- PWR
Publishing Information
- Imprint Title
- Thermal reactor safety
- Journal Page Range
- p. 411-418.
- Report number
- CONF-800403--(Vol.1)
Conference
- Title
- ANS thermal reactor safety meeting.
- Dates
- 8 - 11 Apr 1980.
- Place
- Knoxville, TN, USA.
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 11570338
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- HEAT TRANSFER; HYDRAULICS; LOSS OF COOLANT; PRESSURE GRADIENTS; PWR TYPE REACTORS; REACTOR SAFETY; SPATIAL DISTRIBUTION
- Descriptors DEC
- ACCIDENTS; DISTRIBUTION; ENERGY TRANSFER; REACTOR ACCIDENTS; REACTORS; SAFETY; WATER COOLED REACTORS; WATER MODERATED REACTORS