Realistic Small- and Intermediate-Break Loss-of-Coolant Accident Analysis Using WCOBRA/TRAC

2001 ◽  
Vol 136 (1) ◽  
pp. 50-62 ◽  
Author(s):  
Stephen M. Bajorek ◽  
Nikolay Petkov ◽  
Katsuhiro Ohkawa ◽  
Robert M. Kemper ◽  
Arthur P. Ginsberg
Keyword(s):  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant

Evolution of licensing methodology for large break loss of coolant accident analysis and associated PCT margin quantification

2017 ◽  
Vol 105 ◽  
pp. 59-68
Author(s):  
L.Y. Chou ◽  
T.H. Liang ◽  
K.S. Liang ◽  
C.K. Cheng ◽  
B.S. Pei
Keyword(s):  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant

scholarly journals The sensitivity analysis for APR1400 nodalization under Large Break LOCA condition based on mars code

2017 ◽  
Vol 32 (1) ◽  
pp. 10-17
Author(s):  
Hyung-Wook Jang ◽  
Sang-Yong Lee ◽  
Seung-Jong Oh ◽  
Woong-Bae Kim
Keyword(s):  
Power Reactor ◽  
Cooling System ◽  
Cross Flow ◽  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant ◽  
Flow Phenomena ◽  
Long Time ◽  
Core Cooling ◽  
D Model

The phenomena of loss of coolant accident have been investigated for long time and the result of experiment shows that the flow condition in the downcomer during the end-of-blowdown were highly multi-dimensional at full-scale. However, the downcomer nodalization of input deck for large break loss of coolant accident used in advanced power reactor 1400 analyses are made up with 1-D model and improperly designed to describe realistic coolant phenomena during loss of coolant accident analysis. In this paper, the authors modified the nodalization of MARS code LBLOCA input deck and performed LBLOCA analysis with new input deck. From original LBLOCA input deck file, the nodalization of downcomer and junction connections with 4 cold legs and direct vessel injection lines are modified for reflecting the realistic cross-flow effect and real downcomer structure. The analysis results show that the peak cladding temperature of new input deck decreases more rapidly than previous result and that the drop of peak cladding temperature was advanced by application of momentum flux term in cross-flow. Additionally, the authors developed a new input deck with multi-dimensional downcomer model and ran MARS code with multi-dimensional input deck as well. By using the modified input deck, the Emergency core cooling system by-pass flow phenomena is better characterized and found to be consistent with both experimental report and regulatory guide.

scholarly journals Loss of coolant accident analysis under restriction of reverse flow

2019 ◽  
Vol 51 (6) ◽  
pp. 1532-1539 ◽  
Author(s):  
Majdi I. Radaideh ◽  
Tomasz Kozlowski ◽  
Yousef M. Farawila
Keyword(s):  
Reverse Flow ◽  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant

Conceptual Design Loss-of-Coolant Accident Analysis for the Advanced Neutron Source Reactor

1994 ◽  
Vol 105 (1) ◽  
pp. 104-122 ◽  
Author(s):  
N. C. J. Chen ◽  
Mark W. Wendel ◽  
Graydon L. Yoder
Keyword(s):  
Conceptual Design ◽  
Neutron Source ◽  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant

Loss of Coolant Accident and Loss of Flow Accident Analysis of the ARIES-AT Design

2001 ◽  
Vol 39 (2P2) ◽  
pp. 462-466 ◽  
Author(s):  
E. A. Mogahed ◽  
L. El-Guebaly ◽  
A. Abdou ◽  
P. Wilson ◽  
D. Henderson ◽  
...  
Keyword(s):  
Accident Analysis ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant
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