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Oxidation Analyses of Massive Air Ingress Accident of HTR-PM
Joint Authors
Xu, Wei
Zheng, Yanhua
Shi, Lei
Liu, Peng
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-07-18
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The double-ended guillotine break (DEGB) of the horizontal coaxial gas duct accident is a serious air ingress accident of the high temperature gas-cooled reactor pebble-bed module (HTR-PM).
Because the graphite is widely used as the structure material and the fuel element matrix of HTR-PM, the oxidation analyses of this severe air ingress accident have got enough attention in the safety analyses of the HTR-PM.
The DEGB of the horizontal coaxial gas duct accident is calculated by using the TINTE code in this paper.
The results show that the maximum local oxidation of the matrix graphite of spherical fuel elements in the core will firstly reach 3.75 ⁎ 10 4 mol/m3 at about 120 h, which means that only the outer 5 mm fuel-free zone of matrix graphite will be oxidized out.
Even at 150 h, the maximum local weight loss ratio of the nuclear grade graphite in the bottom reflectors is only 0.26.
Besides, there is enough time to carry out some countermeasures to stop the air ingress during several days.
Therefore, the nuclear grade graphite of the bottom reflectors will not be fractured in the DEGB of the horizontal coaxial gas duct accident and the integrity of the HTR-PM can be guaranteed.
American Psychological Association (APA)
Xu, Wei& Zheng, Yanhua& Shi, Lei& Liu, Peng. 2016. Oxidation Analyses of Massive Air Ingress Accident of HTR-PM. Science and Technology of Nuclear Installations،Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1118581
Modern Language Association (MLA)
Xu, Wei…[et al.]. Oxidation Analyses of Massive Air Ingress Accident of HTR-PM. Science and Technology of Nuclear Installations No. 2016 (2016), pp.1-9.
https://search.emarefa.net/detail/BIM-1118581
American Medical Association (AMA)
Xu, Wei& Zheng, Yanhua& Shi, Lei& Liu, Peng. Oxidation Analyses of Massive Air Ingress Accident of HTR-PM. Science and Technology of Nuclear Installations. 2016. Vol. 2016, no. 2016, pp.1-9.
https://search.emarefa.net/detail/BIM-1118581
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118581