Reflooding of tight lattice bundles
Creators
- 1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires de Grenoble
Description
Results regarding analytical bottom reflooding experiments in a 37- and a 127-heater rod bundle are presented for two different tight lattices. A comparison between these two geometries and with the standard pressurized water reactor (PWR) array shows a degradation of cooling efficiency when the cross section of the subchannels is decreased. The core heat sinks (guide thimbles and ''water tubes'') are seen to have a noticeable influence on the overall cooling of the bundle, and it is confirmed that a combined top/bottom injection does not significantly improve cooling efficiency. Calculations with CATHARE 1.3 code adjusted for the standard PWR array are presented (zero heat sinks), but results have to be confirmed over a wider range of parameters
Additional details
Publishing Information
- Journal Title
- Nuclear Technology
- Journal Volume
- 107
- Journal Issue
- 1
- Journal Page Range
- p. 63-71.
- ISSN
- 0029-5450
- CODEN
- NUTYBB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 26016961
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- C CODES; COOLING; DATA ANALYSIS; DESIGN; FLUID INJECTION; FUEL ELEMENT CLUSTERS; LOSS OF COOLANT; PWR TYPE REACTORS; REACTOR LATTICES; REACTOR SAFETY; SHROUDS; THEORETICAL DATA
- Descriptors DEC
- ACCIDENTS; COMPUTER CODES; COOLING SYSTEMS; DATA; ENRICHED URANIUM REACTORS; FUEL ASSEMBLIES; INFORMATION; NUMERICAL DATA; POWER REACTORS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; SAFETY; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; WELL STIMULATION