Electric Power Research Institute About Us
The Institute
Office Locations

EPRI Summer Seminar

Each year, EPRI meets with executives and experts to discuss industry challenges and opportunities. Summer Seminar has played a crucial role in shaping EPRI’s research portfolio and the future of electricity worldwide.

Our Work Events
Calendars
Joint Resource for the Future-EPRI seminar series examines EPA's Clean Air Act §111(d) proposal (Clean Power Plan) to help stakeholders better understand some of the most critical issues and challenges related to the proposal.
Newsroom Careers

Product Abstract

Fukushima Daiichi Accident -- Technical Causal Factor Analysis

Product ID:1024946
Date Published:27-Mar-2012
File size:3.48 MB
Implementation Category:
REFERENCE

Foundational building blocks for product research and development, often including scientific findings and field experience that feed into Category 1 or Category 2 recommendations.

View all implementation categories and type descriptions Adobe Portable Document Format

Sector Name:Nuclear
Document Type:Technical Report
FileType:Adobe PDF (.pdf)
Implementation Type:
EARLY R&D

Basic/early phase of R&D findings (3-5 yr outlook)

View all implementation categories and type descriptions Adobe Portable Document Format

Price:No Charge

This Product is publicly available.

Abstract
On March 11, 2011, the Fukushima Daiichi nuclear power plant experienced a seismic event and subsequent tsunami. The accident and the ensuing mitigation and recovery activities occurred over several days, involved a number of incidents, and might provide several opportunities for lessons learned. The objective of this report is to determine the fundamental causative factors for the loss of critical systems at the Fukushima Daiichi reactors that resulted in core damage and subsequent radioactive release. The analytical approach used structured event information to support the identification of causal factors; this information can be used in root cause analysis and corrective action determinations.

The technical analysis traced the cause for the eventual loss of all practical cooling paths for the reactors to the tsunami's flooding of the plant protection. Specifically, the analysis identified the significant difference between the design basis tsunami height and the actual tsunami height, as well as the limitations of beyond-design-basis tsunami protection or mitigation that could address the effects of the actual event. From a causal analysis perspective, these were caused by a methodology that specified that the rupture of combinations of geological fault segments in the vicinity of the plant need not be considered in establishing the design basis tsunami height. The tsunami that occurred was caused by a combined rupture of multiple fault segments.

Program
2012 Program 41.07.01  Risk and Safety Management
Keywords
  • Earthquake
  • Fukushima Daiichi
  • Tsunami
Report
000000000001024946
Note

For further information about EPRI, call the EPRI Customer Assistance Center at (800) 313-3774 or email askepri@epri.com

 

 Having Trouble Downloading?

 

Internet Explorer Information Bar

If using Internet Explorer the browser automatically blocks downloads by default, instead displaying an "Information Bar" at the top or bottom of the page.

Click "Download File" on Information Bar if using Internet Explorer 8 or older. If using version 9, click “Save” button on Information Bar and then select “Open” once downloaded.

Pop-up blocker software

You can hold down the CTRL key when selecting Download to bypass your pop-up blocker.

You may also configure your pop-up blocker to allow EPRI.com to open new windows.

Recommended Software

EPRI recommends using the latest version of Adobe Reader for best performance.

 

 Support Services

 

EPRI Customer Assistance Center (CAC):
800-313-3774 or 650-855-2121 Option 4
askepri@epri.com

Hours of Operation:
8:00 AM - 7:00 PM Eastern Time (GMT-5)

Order and Conference Center:
800-313-3774 or 650-855-2121 Option 2
orders@epri.com