Experimental study on transport behavior of cesium iodide in the reactor coolant system under LWR severe accident conditions

2020 ◽  
Vol 57 (12) ◽  
pp. 1287-1296
Author(s):  
Naoya Miyahara ◽  
Shuhei Miwa ◽  
Mélany Gouëllo ◽  
Junpei Imoto ◽  
Naoki Horiguchi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Cesium Iodide ◽  
Severe Accident ◽  
Reactor Coolant ◽  
Transport Behavior ◽  
Accident Conditions ◽  
Coolant System

scholarly journals VICTORIA: A mechanistic model of radionuclide behavior in the reactor coolant system under severe accident conditions

1990 ◽  
Author(s):  
T.J. Heames ◽  
D.A. Williams ◽  
N.A. Johns ◽  
N.M. Chown ◽  
N.E. Bixler ◽  
...  
Keyword(s):  
Mechanistic Model ◽  
Severe Accident ◽  
Reactor Coolant ◽  
Accident Conditions ◽  
Coolant System

Modeling and Phenomenological Aspects of Severe Accidents in Integral Pressurized Water Reactors

2011 ◽  
Author(s):  
I. K. Madni ◽  
M. Khatib-Rahbar
Keyword(s):  
Computer Code ◽  
Severe Accident ◽  
Pressurized Water Reactors ◽  
Modeling Framework ◽  
Pressurized Water ◽  
Product Release ◽  
Severe Accidents ◽  
Water Reactors ◽  
Accident Conditions ◽  
Coolant System

This paper focuses on modeling and phenomenological issues relevant to analysis of severe accidents in integral Pressurized Water Reactors (iPWRs). It identifies relevant thermal-hydraulics, melt progression and fission product release and transport phenomena, and discusses the applicability of the MELCOR computer code to modeling of severe accidents in iPWRs. Areas where the current MELCOR severe accident modeling framework has limitations in the representation of phenomenological processes are identified and examples of possible modeling remedies are discussed. The paper identifies modeling and phenomenological issues that contribute to differences in the calculated reactor coolant system and containment response for iPWRs as compared to traditional PWRs under severe accident conditions.

scholarly journals Experimental Study on the Natural Deposition Characteristics of Erosols in Containment

2020 ◽  
Vol 8 ◽  
Author(s):  
Lin Tao Tian ◽  
Haifeng Gu ◽  
Huiyu Yu ◽  
Junyan Chen
Keyword(s):  
Experimental Study ◽  
Particle Size ◽  
Decay Constant ◽  
Severe Accident ◽  
Experimental Facility ◽  
Small Particles ◽  
Electrostatic Effect ◽  
Accident Conditions

Against the background of the natural deposition of erosols in containment under severe accident conditions, a relevant experimental facility was designed and constructed to study the decay constant of the natural deposition of erosols. TiO2 was used as the erosol medium, and the decay constant of erosols was studied. The results show that when erosol concentration is < 15,000/cm3, the decay constant of erosols increases with the increase of the particle size. However, when it is ≥ 15,000/cm3, because the agglomeration of small particles into larger particles accelerates the deposition of particles with smaller size, the decay constant of erosols decreases first and then increases with the increase of the particle size. In addition, the effect of electrostatic on the decay constant of the natural deposition of erosols was studied. When the electrostatic effect is present, the decay constant of erosols increases significantly. Finally, the natural deposition characteristics of erosols were obtained.

Experimental and Analytical Study on the Behavior of Cesium Iodide Aerosol/Vapor Deposition onto Inner Surface of Pipe Wall under Severe Accident Conditions

1995 ◽  
Vol 32 (10) ◽  
pp. 1047-1053 ◽  
Author(s):  
Akihide HIDAKA ◽  
Minoru IGARASHI ◽  
Kazuichiro HASHIMOTO ◽  
Haruyuki SATO ◽  
Takehito YOSHINO ◽  
...  
Keyword(s):  
Vapor Deposition ◽  
Analytical Study ◽  
Pipe Wall ◽  
Cesium Iodide ◽  
Severe Accident ◽  
Inner Surface ◽  
Accident Conditions
Sign in / Sign up

Export Citation Format

Share Document