Published March 2013 | Version v1
Report Metadata-only

Improvement of seismic observation systems in JOYO

Creators

  • 1. Japan Atomic Energy Agency, Oarai Research and Development Center, Oarai, Ibaraki (Japan)

Description

In the experimental fast reactor 'Joyo' in order to perform the seismic observation in and around the building block and ground, SMAC type seismographs had continuously been used for about 38 years. However, this equipment aged, and the 2011 off the Pacific Coast of Tohoku Earthquake on Mach 11, 2011 increased the importance of seismic data of the reactor facilities from the viewpoint of earthquake-proof safety. For these reasons, Joyo updated the system to the seismic observation system reflecting the latest technology/information, while keeping consistency with the observation data of the former seismographs (SMAC type seismograph). This updating improved various problems on the former observation seismographs. In addition, the installation of now observation points in the locations that are important in seismic safety evaluation expanded the data, and further improved the reliability of the seismic observation and evaluation on 'Joyo'. (A.O.)

Part of:
Report of workshop on operation, management and improvement of research reactors, Yayoi Research Group FY2012

Additional details

Publishing Information

Imprint Title
Report of workshop on operation, management and improvement of research reactors, Yayoi Research Group FY2012
Imprint Pagination
153 p.
Journal Page Range
p. 7.1-7.10
Report number
UTNL-R--0483

Conference

Title
Workshop on operation, management and improvement of research reactors, Yayoi Research Group FY2012
Dates
21 Mar 2013
Place
Tokai, Ibaraki (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
47053409
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S58: GEOSCIENCES;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
EARTHQUAKES; ELECTRIC GENERATORS; JOYO REACTOR; OUTAGES; PHASE DIAGRAMS; RELIABILITY; SEISMIC DETECTION; SEISMIC EFFECTS; SEISMOGRAPHS; UNINTERRUPTIBLE POWER SUPPLIES; WELL DRILLING
Descriptors DEC
BREEDER REACTORS; DETECTION; DIAGRAMS; DRILLING; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EPITHERMAL REACTORS; EQUIPMENT; EXPERIMENTAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; INFORMATION; LIQUID METAL COOLED REACTORS; LMFBR TYPE REACTORS; MEASURING INSTRUMENTS; POWER REACTORS; POWER SUPPLIES; REACTORS; RESEARCH AND TEST REACTORS; SEISMIC EVENTS

Optional Information

Notes
3 refs., 7 figs., 4 tabs.