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Download or read book Global Model for Iodine Behaviour in Reactor Containment written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Anandhi Narayanan
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Global Model for Iodine Behaviour in Reactor Containment written by Anandhi Narayanan and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis was to develop a mechanistic model to simulate iodine behaviour within the containment structure of a nuclear generating station. The model included both aqueous and gas phase radiolysis and interfacial mass transfer. Validation of the model was conducted for each phase separately and the combined model was applied to a few reactor accident scenarios. The aqueous model successfully reflected various experimental data over a wide range in pH, iodide concentration, temperature, and dose rate. The incorporation of gas phase chemistry served to determine the dominant chemical forms of gaseous iodine. In addition, it was observed that hydrogen, likely to be present in the containment atmosphere, would hinder the elimination of molecular iodine. Finally, the interaction of iodine with nitrogen oxides was significant when compared to reactions with ozone. Hence, the deposition of ozone onto surfaces did not impact iodine behaviour. The development of this model will serve as a useful tool for reactor safety assessments.
Author : G. W. Keilholtz
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.3/5 (91 download)
Download or read book Behavior of Iodine in Reactor Containment Systems written by G. W. Keilholtz and published by . This book was released on 1965 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.3/5 (91 download)
Download or read book Behavior of Iodine in the Nuclear Safety Pilot Plant Model Containment Vessel written by and published by . This book was released on 1964 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Atomic Energy of Canada Limited
Publisher : Pinawa, Man. : Whiteshell Nuclear Research Establishment
ISBN 13 :
Total Pages : 77 pages
Book Rating : 4.:/5 (159 download)
Download or read book Assessment of Iodine Behaviour in Reactor Containment Buildings from a Chemical Perspective written by Atomic Energy of Canada Limited and published by Pinawa, Man. : Whiteshell Nuclear Research Establishment. This book was released on 1981 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iodine Behavior in Containment Under LWR Accident Conditions written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The description of containment iodine behavior in reactor accident sequences requires an understanding of iodine volatility effects, deposition and revaporization/resuspension (from surfaces and aerosols), chemical changes between species, and mass transport. The experimental work in this program has largely centered on the interactions of iodine in or with water pools. The formation of volatile iodine, as I2 or organic iodides, is primarily dependent on radiation and solution pH. Lower pH results in increased formation of volatile iodine species; thus, for example, a pH of 3.05 resulted in a conversion of I− to I2 that was more than two orders of magnitude greater than tests run at pH 6.1 or 6.8. The formation or organic iodides involving water pools has been linked to the presence of iodine as I2, the solution/gas contact, and to the type of organic material.
Author : Fariborz Taghipour
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)
Download or read book The Impact of Organic Compounds on Iodine Behaviour Under Conditions Relating to Nuclear Reactor Accidents written by Fariborz Taghipour and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of organic compounds on iodine behaviour was investigated under a range of post-accident chemical conditions expected in a reactor containment structure. A bench scale apparatus installed in the irradiation chamber of a Gammacell was used to provide continuous measurement of iodine volatilization rates from 10-6 to 10 -4 CsI solutions with pH values from 5 to 9. The rate of production of volatile iodine was evaluated in the presence of 10-3 M concentrations of various alkyl halides, carbonyls, and aromatics; the three classes of organic compounds most likely present in containment. Iodo-organics and molecular iodine in the gas and liquid phases of the irradiated samples were analyzed using gas chromatography, mass spectrometry, and UV spectrophotometry. A model was developed that simulates the radiation chemistry of iodine in the presence of organic compounds and evaluated against the experimental results. The results indicated that organic compounds can be classified into groups, based on their distinct effects on iodine behaviour. Iodine volatilization increased significantly, up to two orders of magnitude, in the presence of carbonyls and alkyl chlorides, while it decreased in the presence of aromatics. Gas and liquid phase analysis indicated that chloro-iodo organics and alkyl iodides are the major types of volatile iodo-organics formed in the presence of alkyl chlorides and carbonyls, respectively, while no volatile iodo-organics are formed in the presence of aromatics. Molecular iodine measurements in the systems showed that I2 concentration increases in the presence of alkyl chlorides and decreases in the presence of carbonyls and aromatics. The kinetic-based model, containing a mechanistic description of iodine chemistry and generic semi-mechanistic reactions for various classes of organics, provided a reasonable prediction of the experimental results. The majority of the model and experimental results were in agreement within an order of magnitude. The results of this research will assist in predicting and reducing the radiological consequences of reactor accidents. In particular, the results indicate the advantage of maintaining basic pH and avoiding alkyl halide or ketone based solutions in post-accident reactor containment, in order to reduce radioactive iodine volatility, and hence, improve reactor safety.
Author :
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (727 download)
Download or read book Models of Iodine Behavior in Reactor Containments written by and published by . This book was released on 1992 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Models are developed for many phenomena of interest concerning iodine behavior in reactor containments during severe accidents. Processes include speciation in both gas and liquid phases, reactions with surfaces, airborne aerosols, and other materials, and gas-liquid interface behavior. Although some models are largely empirical formulations, every effort has been made to construct mechanistic and rigorous descriptions of relevant chemical processes. All are based on actual experimental data generated at the Oak Ridge National Laboratory (ORNL) or elsewhere, and, hence, considerable data evaluation and parameter estimation are contained in this study. No application or encoding is attempted, but each model is stated in terms of rate processes, with the intention of allowing mechanistic simulation. Taken together, this collection of models represents a best estimate iodine behavior and transport in reactor accidents.
Author : Elisabeth Krausmann
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (638 download)
Download or read book “A” Heterogeneous Model of Silver-iodine Reactions in a Light-water-reactor Containment Under Severe-accident Conditions written by Elisabeth Krausmann and published by . This book was released on 1999 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. R. Weaver
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Behaviour of iodine in the heat transport system and containment and application to loss-of-coolant accident analysis for 600 mw(e) reactors written by K. R. Weaver and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. C. Wren
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Imod, a containment iodine behaviour model - model descripton and simulation of rtf tests written by J. C. Wren and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. E. Sims
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Iodine behavior in containment : the reaction of iodine with surfaces : draft written by H. E. Sims and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. T. Rogers
Publisher : CRC Press
ISBN 13 : 1000107310
Total Pages : 883 pages
Book Rating : 4.0/5 (1 download)
Download or read book Fission Product Processes In Reactor Accidents written by J. T. Rogers and published by CRC Press. This book was released on 2020-12-17 with total page 883 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Three Mile Island and Chernobyl nuclear incidents emphasized the need for the world-wide nuclear community to cooperate further and exchange the results of research in this field in the most open and effective manner. Recognizing the roles of heat and mass transfer in all aspects of fission-product behavior in sever reactor accidents, the Executive Committee of the International Centre for Heat and Mass Transfer organized a Seminar on Fission Product Transport Processes in Reactor Accidents. This book contains the eleven of the lectures and all the papers presented at the seminar along with four invited papers that were not presented and a summary of the closing session.
Author : Charles F. Weber
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (245 download)
Download or read book Iodine Chemical Forms in LWR Severe Accidents written by Charles F. Weber and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. Krischer
Publisher : CRC Press
ISBN 13 : 0203213513
Total Pages : 270 pages
Book Rating : 4.2/5 (32 download)
Download or read book The Phebus Fission Product Project written by W. Krischer and published by CRC Press. This book was released on 2003-09-02 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Seminar of the Phebus-FP [Fission Product] Project, held at the Chateau Cadarache, St Paul-Lez-Durance, France, 5-7 June 1991.
Author :
Publisher :
ISBN 13 :
Total Pages : 754 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D.G. Hurst
Publisher : McGill-Queen's Press - MQUP
ISBN 13 : 0773566538
Total Pages : 449 pages
Book Rating : 4.7/5 (735 download)
Download or read book Canada Enters the Nuclear Age written by D.G. Hurst and published by McGill-Queen's Press - MQUP. This book was released on 1997-04-19 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by sixteen of Canada's pioneering nuclear scientists, the book focuses on Canada's nuclear program at AECL's laboratories at Chalk River, Ontario, and Whiteshell, Manitoba, between the years 1943 and 1985. Topics include the organization and operations of AECL's laboratories, nuclear safety and radiation protection, radioisotopes, basic research, development of the CANDU reactor, and the management of radioactive wastes. As well as providing a valuable historical perspective on Canadian science, Canada Enters the Nuclear Age offers useful guidance for innovative scientific development in the future, a future that will depend on developing and nurturing technically sophisticated industry.
