Neutron physical investigations on the shutdown effect of small boronated absorbing spheres for pebble-bed high-temperature gas-cooled reactors
Journal Article
·
· Nucl. Sci. Eng.; (United States)
OSTI ID:5011665
An emergency shutdown system for high-temperature gas-cooled pebble-bed reactors is proposed in addition to the common absorber rod shutdown system. This system is based on the strongly absorbing effect of small boronated graphite spheres (called KLAK), which trickle in case of emergency by gravity from the top reflector into the reactor core. The inner reflector of the Siemens-Argonaut reactor was substituted by an assembly of spherical Arbeitsgemeinschaft Versuchsreaktor fuel elements, and the shutdown effect was examined by installing well-defined KLAK nests inside this assembly. The purpose was to develop and prove a calculational procedure for determining criticality values for assemblies of large fuel spheres and small absorbing spheres.
- Research Organization:
- Institut fur Theoretische Physik der Technischen Universitat Graz Petersgasse 16, A-8010 Graz (AT)
- OSTI ID:
- 5011665
- Journal Information:
- Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 97:1; ISSN NSENA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210400 -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
220900 -- Nuclear Reactor Technology-- Reactor Safety
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
EMERGENCY PLANS
FERMIONS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HADRONS
HTGR TYPE REACTORS
NEUTRONS
NUCLEONS
REACTOR COMPONENTS
REACTOR CORES
REACTOR SAFETY
REACTOR SHUTDOWN
REACTORS
SAFETY
SHOCK ABSORBERS
SHUTDOWNS
TEST FACILITIES
210400 -- Power Reactors
Nonbreeding
Otherwise Moderated or Unmoderated
22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
220900 -- Nuclear Reactor Technology-- Reactor Safety
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
EMERGENCY PLANS
FERMIONS
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HADRONS
HTGR TYPE REACTORS
NEUTRONS
NUCLEONS
REACTOR COMPONENTS
REACTOR CORES
REACTOR SAFETY
REACTOR SHUTDOWN
REACTORS
SAFETY
SHOCK ABSORBERS
SHUTDOWNS
TEST FACILITIES