March 16th, 2011 – Estimate time for boil-dry times for a typical spent fuel pool
Estimate time for boil-dry times for a typical spent fuel pool Source: RTM Table D-1 (see figure below) Assumptions: (1) Full core recently discharged (see box in figure) (2) 100 days after shutdown…
TEPCO still unable to restore power at all affected facilities
Monday night, a power outage at the Main Anti-Earthquake Building at the Fukushima Daiichi nuclear power station suspended operations at three spent fuel pool cooling systems and other critical plant facilities. TEPCO was…
Power outage at Fukushima Daiichi halts spent fuel pool cooling at multiple units
According to TEPCO and the Japanese Nuclear Regulation Authority, around 19:00 on Monday night, the seismic building at the Fukushima Daiichi nuclear power plant had experienced a power failure. While the outage did…
TEPCO releases video footage of Fukushima Daiichi Reactor 3 spent fuel pool
TEPCO released video footage of an investigation into the Fukushima Daiichi Reactor 3 spent fuel pool, after workers performing debris removal operations knocked the fuel handling machine mast into the spent fuel pool….
TEPCO reports problems with debris removal operations at Fukushima Daiichi
This week TEPCO workers have been working to remove debris from the top of the Unit 3 reactor building, clearing the way to begin construction of additional protective covering structures and eventual removal…
NRC to review spent fuel regulations
After more than 20 years of non-action, the United States Nuclear Regulatory Commission is reviewing its policies, regulations, guidance, and technical needs in several key areas, such as: retrievability, cladding integrity, and safe…
March 24th, 2011 – Neutron source found 1 mile from Fukushima Daiichi – Maybe from Unit 3 explosion
Male Participant: You know, we do believe that based on information from TEPCO and identification of neutron sources, you know, found at the one mile from the plant that some fuel may have…
Workers complete first stage of steel cover for Fukushima Daiichi Unit 4
For the better part of the last 6 months, workers have been preparing Fukushima Daiichi Unit 4 for the extraction of the spent fuel from the spent fuel pool of the destroyed reactor…
Cracks found in spent fuel rods at Hamaoka nuclear power plant
An investigation by Chubu into the status of spent fuel stored in the spent fuel pool from the Unit 1 reactor of the Hamaoka nuclear power plant found cracks and other deformations among…
TEPCO making plans to remove spent fuel from Fukushima Daiichi Reactor 4
TEPCO plans to start removing spent fuel from the Unit 4 reactor building starting in November of this year, and has already started bringing in cranes and heavy equipment for the removal work. …
For nuclear plants on active faults, reactors aren’t only risk
Japan’s Nuclear Regulation Authority is not just worried about the safety of the nuclear reactors at the Tsuruga and Higashidori nuclear power plants, they also have raised concerns about the combined 800 tons…
TEPCO investigation finds multiple spent fuel pools at Kashiwazaki-Kariwa plant house damaged spent fuel assemblies
After a Level 1 incident was announced upon the disclosure of two deformed fuel rods which were stick together at the Kashiwazaki-Kariwa nuclear power plant, TEPCO investigated 65 spent fuel assemblies at the…
Cracks found at central spent nuclear fuel storage facility for all of Swedish nuclear reactors
The Swedish Radiation Safety Authority has asked nuclear waste contractors at the Oskarshamn nuclear plant to review their security requirements after cracks were found in the pools where nuclear waste is stored on…
In-Focus: Fukushima – TEPCO working to remove steel beam from Unit 3 SFP
TEPCO working to remove steel beam from Fukushima Daiichi Reactor 3 Spent Fuel Pool Source: TEPCO Source: JiJi Press TEPCO to expand decontamination personnel Source: NHK Source: JiJi Press Chronic personnel shortages in…
TEPCO releases video and photos of Unit 3 spent fuel pool after steel frame accident
Around 11:07 AM on September 22nd, while working on removing debris from atop the crippled reactor building, a heavy thousand pound steel frame was knocked into Reactor 3′s spent fuel pool. The steel…
Many difficulties lie ahead in decommissioning work after the Fukushima Daiichi nuclear disaster
One and a half years after the March 11th disaster at Fukushima, workers on-site face immense difficulties in decommissioning work at the crippled nuclear power plant. The utility now admits that the explosion…
April 5th, 2011 – Notes From Science Experts Call on Fukushima Disaster – SFP Assessment – External Drywell Cooling
Science Experts Call/April 5, 2011 - Prepared by Doug Burs, INL I. Spent Fuel Pool Assessment 1. The option of filling a spent fuel pool with borated sand in the event of a high…
TEPCO studying how to remove fuel rods from crippled Reactor 4 spent fuel pool
In July, workers at Fukushima Daiichi removed 2 unused fuel assemblies from the spent fuel pool of Reactor 4. On Monday, TEPCO examined one of the assemblies to determine the extent of the…
March 24th, 2011 – Fukushima Daiichi Reactors Spent Fuel Pool Details – Pool Locations
Pages From ML12096A069 – March 24th, 2011 – Fukushima Daiichi Reactors Spent Fuel Pool Details – Pool Locat…
April 6th, 2011 – 22 percent of US spent fuel inventory is in dry cask storage
From: McIntyre, David [mailto:David.Mclntyre@nrc.gov] Sent: Wednesday, April 06, 2011 9:25 AM To: Paine, Anne; Burnell, Scott; Hannah, Roger Cc: Hayden, Elizabeth Subject: RE: spent fuel pools versus dry cask storage I guess I…
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