Examination of loop-operator-initiated events for the advanced test reactor
The Advanced Test Reactor (ATR) located at the Idaho National Engineering Laboratory is a unique high-flux test reactor having nine major test positions for irradiation of reactor materials. These test positions contain inpile tubes (IPT) that are connected to external piping and equipment (loops) to provide the high-temperature, high-pressure environment for the testing. The design of the core has intimately integrated the IPTs into the fuel region by means of a serpentine fuel arrangement resulting in a close reactivity coupling between the loop thermal hydraulics and the core. Consequently, operator actions potentially have an impact on the reactor power transients resulting from off-normal conditions in these facilities. This paper examines these operator-initiated events and their consequences. The analysis of loop-operator-initiated events indicates there is no damage to the reactor core even when assuming no operator intervention for mitigation. However, analysis does assume a scram occurs when required by the reactor protection systems.
- OSTI ID:
- 5321273
- Report Number(s):
- CONF-890604-; CODEN: TANSA; TRN: 90-002502
- Journal Information:
- Transactions of the American Nuclear Society; (USA), Vol. 59; Conference: Annual meeting of the American Nuclear Society, Atlanta, GA (USA), 4-8 Jun 1989; ISSN 0003-018X
- Country of Publication:
- United States
- Language:
- English
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21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
ATR REACTOR
REACTOR SAFETY
REACTOR OPERATORS
ERRORS
DEPRESSURIZATION
DESIGN
EMERGENCY PLANS
IDAHO NATIONAL ENGINEERING LABORATORY
IRRADIATION
LOSS OF COOLANT
LOSS OF FLOW
MITIGATION
NEUTRON FLUX
R CODES
REACTOR CORES
REACTOR MATERIALS
REACTOR OPERATION
SCRAM
TRAINING
TRANSIENTS
ACCIDENTS
COMPUTER CODES
ENRICHED URANIUM REACTORS
IRRADIATION REACTORS
MATERIALS
MATERIALS TESTING REACTORS
NATIONAL ORGANIZATIONS
OPERATION
PERSONNEL
RADIATION FLUX
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR SHUTDOWN
REACTORS
RESEARCH AND TEST REACTORS
SAFETY
SHUTDOWNS
TANK TYPE REACTORS
TEST REACTORS
THERMAL REACTORS
US DOE
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WATER MODERATED REACTORS
220900* - Nuclear Reactor Technology- Reactor Safety
220600 - Nuclear Reactor Technology- Research
Test & Experimental Reactors