"Reactor 4" tag
Japan Nuclear No Experts

Human error blamed after spent fuel removal operations halted at Fukushima Daiichi

Tokyo Electric, the utility decommissioning the Fukushima Daiichi nuclear power plant in Japan, determined that human error is the most likely cause for the alarms which stopped work removing spent fuel assemblies from…

Workers stand in front of the Unit 4 Spent Fuel Pool

Alarm brings fuel retrieval from Fukushima Daiichi Unit 4 to a halt

Workers at the Fukushima Daiichi nuclear power plant have been forced to halt removal of spent fuel rods from the Reactor 4 spent fuel pool. The pool contains 1,533 fuel rods, 1,331 of…

The Fukushima Daiichi nuclear power plant pictured in March 2011 and March 2014.

More progress made overhauling site than decommissioning reactors at Fukushima Daiichi

In the three years since the start of the Fukushima Daiichi nuclear disaster there has been a plethora of drastic changes made to the landscape of the Fukushima Daiichi nuclear power plant including;…

March 14th, 2011 - TEPCO requests US Embassy help extinguish fire at Unit 4

March 14th, 2011 – TEPCO requests US Embassy help extinguish fire at Unit 4

March 14th, 2011 – TEPCO Requests US Embassy Help Extinguish Fire at Unit 4 – Pages From C146301-02X – Grou…

April 20th, 2011 – JNES Assessment of Spent Fuel Pool at Fukushima Daiichi Unit 4

April 20th, 2011 – JNES Assessment of Spent Fuel Pool at Fukushima Daiichi Unit 4

An analysis performed by the Japanese version of the Sandia experts on the spent fuel pool at Fukushima Daiichi Reactor 4. April 20th, 2011 – JNES Assessment of Spent Fuel Pool at Fukushima…

April 29th, 2011 - Consortium  analysis of TEPCO Roadmap at Fukushima Daiichi

April 29th, 2011 – Consortium of Industrial and Governmental Organizations analysis of TEPCO Roadmap at Fukushima Daiichi

In April of 2011, a consortium of industrial and governmental organizations established to provide advice to Japan in its efforts to stabilize the conditions at the Fukushima Daiichi nuclear power plant, authored an…

Unit 4 Spent Fuel Pool Cask

TEPCO begins critical work unloading Fukushima Daiichi Unit 4 spent fuel pool

On Monday at 15:18, TEPCO workers began work removing spent fuel from the crippled Fukushima Daiichi Unit 4 spent fuel pool, which holds 1,533 assemblies.  Of the 1,533 assemblies, 1,311 are spent fuel,…

March 31st, 2011 - TEPCO's assessment of structural damage to Unit 1, 3, and 4 reactor buildings

March 31st, 2011 – TEPCO’s assessment of structural damage to Unit 1, 3, and 4 reactor buildings

March 31st, 2011 – TEPCO’s Assessment of Structural Damage to Unit 1, 3, And 4 Reactor Buildings by Enformable

March 16th, 2011 - Estimate Time for Boil-dry Times for a Typical Spent Fuel Pool

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…

Fukushima Daiichi Unit 4 and Cover - Resized

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…

Fukushima Daiichi Reactors from West looking over Pacific Ocean

Severity of damage found at Fukushima Daiichi forcing TEPCO to reanalyze approach to disaster

The reactor containment structures which house the nuclear reactors at Fukushima made by GE, Hitachi, and Toshiba, have so many holes in them that they are preventing workers from making any substantial progress…

OLYMPUS DIGITAL CAMERA

TEPCO releases trove of images taken during early days of Fukushima Daiichi disaster

Today, TEPCO published nearly two thousand photos of the first weeks of the response to the Fukushima Daiichi nuclear disaster.  During the early days of the accident workers were temporarily evacuated multiple times…

130115_01

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…

121219_04

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. …

Fukushima Daiichi Reactor 4 ground

TEPCO to start remove spent fuel from Fukushima Daiichi Unit 4 one month earlier than planned

Due to concerns over the ability of the destroyed reactor building to withstand earthquake activity as well as emergency operations, TEPCO has decided to speed up operations one year ahead of schedule to…

120911_286

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…

Fukushima Daiichi Reactor 4 SFP Unused Assembly Test - Fuel Assembly Investigation

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

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…

JAPAN-QUAKE-NUCLEAR-BLAST

March 20th, 2011 – After Unit 3 explosion people working outside for 15-30 minutes later show radiation levels of more than 10 mSv

From: PMT03 Hoc Sent: Sunday, March 20, 2011 5:26 PM To: Hoc, PMT12; PMT07 Hoc Subject: RE: Utube video of workers Fukushima Daiichi Worker Interviews Source: NHK World (www.youtube.com/watch?v=qc3BKldg3-c) Received from ET02 at…

Reactor 4 water leak

More contaminated water found leaking at Fukushima Daiichi

A worker at Fukushima Daiichi was moving about the disaster site Tuesday, when he noticed that there was a pool of water covering the floor on the first floor of the Unit 4…

Enformable © 2014 All Rights Reserved