Back to 2006 listConstruction to improve seismic resistance of Reactor No. 4 at the Hamaoka Nuclear Power Station
March 22, 2006
Chubu Electric Power Co., Inc.
The Hamaoka Nuclear Power Station is voluntarily undertaking construction to increase the seismic resistance of each of its reactors. Personnel are proceeding with assessment of seismic resistance to a shock in the target area (a seismic tremor of approximately 1,000 gal at bedrock) and preparation of designs to increase the seismic resistance. These efforts were announced on January 28, 2005.
These plans involve assessment of the seismic resistance of Reactor No. 4; the relevant construction, including work currently underway, includes the following activities.
In the ninth periodic inspection, planned to commence on March 23, construction will begin to improve structures supporting piping and electrical circuitry. In addition, plans call for improvements to exhaust-pipe facilities, beginning in April.
All construction is planned for completion in the second half of the 2007 fiscal year.
< Construction to improve seismic resistance of Reactor No. 4 >
- • Construction to improve the piping support structure
(conducted during ninth periodic inspection) - • Construction to improve the electrical circuitry support structure
(conducted during ninth periodic inspection) - • Construction to improve fuel-replacement guide rails
- • Construction to improve physical structures holding the cranes in place for ceiling cranes in reactor buildings
- • Construction to improve oil tanks
- • Construction to improve ground behind retaining walls
- • Construction to improve ground around exhaust ducts
(presently in progress) - • Construction to improve exhaust pipes
(preparations now underway)
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