Comments on “Thermodynamical Calculations on the Behavior of Gaseous Iodine Species Following a Hypothetical Severe Light Water Reactor Accident”

1986 ◽  
Vol 73 (1) ◽  
pp. 124-124
Author(s):  
Masaaki Uchida
Keyword(s):  
Light Water Reactor ◽  
Reactor Accident ◽  
Light Water ◽  
Water Reactor ◽  
Iodine Species

Synthesis of I-131 labelled iodine species relevant during severe nuclear accidents in light water reactors

2013 ◽  
Vol 101 (10) ◽  
pp. 675-680 ◽  
Author(s):  
S. Tietze ◽  
M. R. St. J. Foreman ◽  
C. Ekberg
Keyword(s):  
Light Water Reactor ◽  
Nuclear Accidents ◽  
Light Water Reactors ◽  
Light Water ◽  
Water Reactor ◽  
Iodine Species ◽  
Water Reactors ◽  
Paint Films ◽  
Elemental Iodine ◽  
Severe Nuclear Accident

Summary Methods for the small scale synthesis of I-131 labelled iodine species relevant to severe nuclear accidents in light water reactors have been developed. The introduced methods allow the synthesis of impurity free, volatile, inorganic elemental iodine and volatile, organic iodides such as methyl- and ethyl iodide, as well as butyl iodide, chloroiodomethane, allyl iodide and benzyl iodide with ease. The radioactive iodine containing products are sufficiently stable to allow their storage for later use. Due to their volatility the liquid species can be easily converted into gaseous species and thus can be used in research in liquid and gaseous phase. The primary motivation for the development of these synthesis methods is to study the behaviour of volatile iodine species under the conditions of a severe nuclear accident in a light water reactor. Thus, the chemicals involved in the synthesis are chosen in a way to not generate impurities (chlorine and organic solvents) in the products which interfere with competing reactions relevant during a severe nuclear accident. Teknopox Aqua VA epoxy paint, which is used in Swedish light water reactor containments, and its reactions with the produced iodine species are described. The synthesised iodine species undergo chemisorption on paint films. Different to elemental iodine, the organic iodides are non-reactive with copper surfaces. The sorbed iodine species are partly re-released mainly in form of organic iodides and not as elemental iodine when the exposed paint films are heat treated. The partitioning and hydrolysis behaviour of gaseous methyl- and ethyl iodide between containment gas phase and water pools is found to be similar. The methods have been designed to minimise the use of harmful materials and the production of radioactive waste.

scholarly journals Advanced Fuels Campaign Light Water Reactor Accident Tolerant Fuel Performance Metrics

2014 ◽  
Author(s):  
Brad Merrill ◽  
Melissa Teague ◽  
Robert Youngblood ◽  
Larry Ott ◽  
Kevin Robb ◽  
...  
Keyword(s):  
Performance Metrics ◽  
Light Water Reactor ◽  
Reactor Accident ◽  
Fuel Performance ◽  
Light Water ◽  
Water Reactor ◽  
Advanced Fuels

Fission Product Releases at Severe Light Water Reactor Accident Conditions: ORNL/CEA Measurements Versus Calculations

1996 ◽  
Vol 114 (1) ◽  
pp. 23-50 ◽  
Author(s):  
Bernard André ◽  
Gérard Ducros ◽  
Jean Pierre Lévêque ◽  
Morris F. Osborne ◽  
Richard A. Lorenz ◽  
...  
Keyword(s):  
Fission Product ◽  
Light Water Reactor ◽  
Reactor Accident ◽  
Light Water ◽  
Water Reactor ◽  
Accident Conditions

Qualification of the ARROTTA Code for Light Water Reactor Accident Analysis

1994 ◽  
Vol 108 (1) ◽  
pp. 137-150 ◽  
Author(s):  
Ping-Hue Huang ◽  
Jing-Tong Yang ◽  
Jen-Ying Wu
Keyword(s):  
Light Water Reactor ◽  
Accident Analysis ◽  
Reactor Accident ◽  
Light Water ◽  
Water Reactor
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