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This report is issued irregularly.
Inquiries about availability of the reports should be addressed to Research
Information Division, Department of Intellectual Resources, Japan Atomic Energy
Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken T 319-1195, Japan.
(C) Japan Atomic Energy Research Institute, 2001
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JAERI-Research 2000-063
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Feasibility Study on Floating Nuclear Power Plant (1)- Conceptual Design Study of FNPP -
(Contract Research)
Noriaki YABUUCHI, Masao TAKAHASHI*, Toshio NAKAZAWA+, Kazuo SATO* •Junya SHIMAZAKI and Masaaki OCHIAI
Department of Nuclear Energy SystemTokai Research Establishment
Japan Atomic Energy Research InstituteTokai-mura, Naka-gun, Ibaraki-ken
(Received November 22, 2000)
Offshore siting methods for a nuclear power plant are classified into threetypes as a floating type, a settled type and a land reclamation type. The floatingnuclear power plant (FNPP) has a number of advantages, such as seismicisolation, standardization of design and manufacturing, and reduction ofconstruction period. It is, however, required for FNPP to establish the safetystandards, which are different from ones for land based nuclear power plant.Investigations for this subject have not been conducted sufficiently.
In this report, design study on a concept for FNPP and a review on stabilityevaluation for the floating platform, which were performed in order to study thesafety concept of the FNPP are described.
The basic concept for FNPP is as follows: The FNPP is sited approximately 1~2km off the sea coast on the open sea with water depth of about 20m and it ismoored on protected sea by the breakwater, it provide a floating platform for al,100MWe class PWR plant.
The results of design study show that the floating platform for l,100MWe classPWR plant of 300m(L) X 80m(W) X 35m(H), and displacement of approximately300,000 ton can be constructed in a dockyard. This floating platform guarded bythe breakwater is found to be stable enough to install the nuclear power plantfrom the analysis simulating the movement of the platform due to sea wave orwind.
Keywords: Offshore Siting, Floating Nuclear Power Plant, Conceptual Design,Floating Platform
This study was conducted during 1995 through 1998 under contract withScience and Technology Agency of Japan.
+ Department of HTTR Project Oarai Research Establishment* Niigata Engineering Co.Ltd.* * Ishikawajima-Harima Heavy Industries Co.Ltd.
JAERI-Research 2000-063
5 .
m
2.1
2.2
2.3
&
3.1
3.2
3.3
3.4
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23
4
4
4
5
7
9
9
13
14
15
16
56
59
67
JAERI-Research 2000-063
Contents
1 . Introduction . . , , . , . . -
2 . Concept and Feature of Floating Nuclear Power Plant (FNPP) 1
2.1 Classification of Floating Type ^
2.2 Concept of FNPP • 22.3 Advantages of FNPP • • • • • • • • • • • • - - • • • 3
3 . Example of Conceptual Design of FNPP " " • * 43.1 Design Condition 4
3.2 Floating Platform " • • " ' 4
3.3 Mooring Equipment * " ' " " " 5
3.4 Breakwater * 6
3.5 FNPP Layout " 74 . Simulation of Platform Motions • • • • • • • 9
4.1 Platform Motions due to Wave and Wind * 9
4.2 Platform Response to Seaquake ^3
5 . Conclusion . . . . . . . . . . . . . . . . . . . ^
Acknowledgements "" 15
References ^g
Appendix I Description of the Atlantic Generating Station (AGS) 56
Appendix II Simulation Data of Platform Motions 59
AppendixIII Seaquake 67
JAERI-Research 2000-063
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1PS({A.« / J )
= 75 kgf-m/s
= 735.499 W
Bq
3.7 x 10"
2.70270 x 10-
1m
Gy
1
0.01
rad m100
1
C/kg
2.58 x 10-'
3876
1
Sv
1
0.01
rem
100
1