Application of seismic isolation to the STAR-LM reactor. Page: 2 of 8
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Proceedings of ICONE10:
10TH International Conference on Nuclear Engineering
Arlington, Virginia, USA April 14-18, 2002
ICON E10-22506
APPLICATION OF SEISMIC ISOLATION TO THE STAR-LM REACTORB. Yoo
Korea Atomic Energy Research Institute
Taejon, South Korea
E-mail: byoo@kaeri.re.krR. F. Kulak
Argonne National Laboratory
Argonne, IL, USA
E-mail: rfkulak@anl.govKeywords: Base Isolation, 2D- 3D-Seismic Isolation, Advanced Reactor, Generation IV Heavy Liquid Metal Coolant
ABSTRACT
This paper presents findings from our initial work in developing
a seismic isolation system for the STAR-LM reactor design.
Research and development was carried out to determine the
characteristics of the isolator device. The heavy weight and small
footprint presented a challenge in bearing design and bearing
placement. Results are also presented from a study on the use of
three-dimensional seismic isolation devices to the full-scale
reactor. Both two-dimensional (i.e., one device for horizontal
isolation only) and integral (i.e., one device for horizontal and
vertical) concepts were explored. The seismic analysis responses
of the two-dimensional and the three-dimensional isolation
systems for the STAR-LM are compared with that of the
conventional fixed base system. Finally, results are presented from
a study on the effects of the levels of vertical and horizontal
damping on the seismic response of STAR-LM.
INTRODUCTION
The next generation of nuclear energy systems will be the result
of the Generation IV program, which has the following goals:
sustainability, safety and reliability, and economics. Because Gen
IV reactor plants will be deployed worldwide, some plants will be
located in seismically active regions as well as seismically active
countries. Thus, one of the major challenges placed before the
designers of Gen IV plants is to design the plants not only to
survive seismic events but also to continue to provide power
during and after earthquakes. Passive seismic isolation is the
leading candidate for achieving this goal.
Several designs, which use liquid metal coolants, have been
proposed as part of the Generation IV program: STAR-LM (300-
400 MWth), ENHS (125 MWth), KALIMER (150-330 MWe) andS-PRISM (1000 MWth). STAR-LM and ENHS use a lead-
bismuth eutectic as the coolant, and KALTMER and S-PRISM use
liquid sodium as the coolant. The use of lead-bismuth eutectic (1)
results in plant simplification, (2) improves cost competitiveness,
(3) increases inherent/passive safety, and (4) provides achievable
proliferation resistance measures. However, lead coolant is ten
times heavier than sodium coolant and this present a challenge to
designers of the seismic isolation systems that will be used with
these heavy liquid metal reactors.
Seismic isolation systems have been fully developed and
designed for the sodium cooled KALTMER and S-PRISM
concepts. Much research was performed on their isolation systems
(1) to quantify elastomer response characteristics, (2) to identify
optimal mounting methods and (3) to determine system and
isolator design parameters. There has not been any work done on
the lead cooled designs.
This paper presents findings from our initial work in developing
a seismic isolation system for the STAR-LM reactor design.
Research and development was carried out to determine the
characteristics of the isolator device. The heavy weight and small
footprint presented a challenge in bearing design and bearing
placement. Results are also presented from a study on the use of
three-dimensional seismic isolation devices to the full-scale
reactor. Both two-dimensional (with one device for horizontal
isolation only) and three-dimensional (with one integral device for
both horizontal and vertical isolation) concepts were explored. The
seismic analysis responses of the two-dimensional and the three-
dimensional isolation systems for the STAR-LM are compared
with that of the conventional fixed base system.Copyright 2002 by ASME
1
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Kulak, R.F. & Yoo, B. Application of seismic isolation to the STAR-LM reactor., article, February 26, 2002; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc736277/m1/2/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.