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osu1236382376.pdf (1.25 MB)
ETD Abstract Container
Abstract Header
Study of In-Core Flow Blockage by Insulation Debris
Author Info
Bucknor, Matthew David
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1236382376
Abstract Details
Year and Degree
2009, Master of Science, Ohio State University, Nuclear Engineering.
Abstract
The objective of this research is to determine the thickness of a debris bed comprised of insulation material that would lead to a peak cladding temperature of 2200°F, which is a thermal limit specified in the Federal Code of Regulations for Nuclear Power Plants, following a loss of coolant accident. This study considers the case of a cold-leg break which leads to a loss of reactor coolant. In this accident, fiberglass debris is generated from the breakup of thermal insulation during the blowdown phase in the accident. The material is then transported to the sump where it may be pumped into the core where it is possible to build up a debris bed at spacer grid locations. The debris bed will restrict coolant flow and therefore lead to deteriorated heat transfer from the cladding to the coolant. A two-dimensional heat transfer analysis is performed to determine the critical length of blanketed region beyond which axial conduction in the pin is no longer adequate to prevent the peak cladding temperature from exceeding the regulatory limit. The feasibility of creating a debris bed thickness greater than the critical size is also evaluated. The amount of insulation debris potentially available to the core region is compared with the amount required to create a debris bed of the critical thickness.
Committee
Richard Denning (Advisor)
Xiaodong Sun (Committee Member)
Pages
103 p.
Subject Headings
Mechanical Engineering
Keywords
in-core blockage
;
cold leg break
;
nukon
;
core blockage
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Bucknor, M. D. (2009).
Study of In-Core Flow Blockage by Insulation Debris
[Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1236382376
APA Style (7th edition)
Bucknor, Matthew.
Study of In-Core Flow Blockage by Insulation Debris.
2009. Ohio State University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1236382376.
MLA Style (8th edition)
Bucknor, Matthew. "Study of In-Core Flow Blockage by Insulation Debris." Master's thesis, Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1236382376
Chicago Manual of Style (17th edition)
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Document number:
osu1236382376
Download Count:
842
Copyright Info
© 2009, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.