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TEPCO Documents

TEPCO Documents:
Newest will be added to the top of the list. We do not archive all TEPCO documents but do save copies of those that appear to be important.

TEPCO reports to the IAEA Chapter 1 | Chapter 2, |  Chapter 3 | Chapter 4 | Chapter 5 | Chapter 6 | Chapter 7 | Chapter 8 | Chapter 9
TEPCO IAEA report in one document
September updates to IAEA   Chapter 1, Chapter 2, | Chapter 3, | Chapter 4 | Chapter 5 | Chapter 6 | Chapter 7 | Chapter 8 | Chapter 9
TEPCO unit 1 temp data for May  
TEPCO  Site Radiation Survey Maps – List
TEPCO - Seismic information not taken into account during Fukushima Daiichi and Daini construction
TEPCO - Current seismic safety and reinforcement of reactor buildings at Fukushima Daiichi 
TEPCO - Roadmap towards restoration appendix 2
TEPCO - Overview of fault investigation regarding Yunodake fault
TEPCO - Observed seismic data of the Tohoku-Taiheiyou-Oki earthquake at Daiichi & Daini
TEPCO - Unit 1 earthquake response analysis of reactor building, equipment & piping,  etc.

November 2013:

We have moved newer content to a new document management system. Use the link to launch each month’s documents in a new window.
Launch November’s TEPCO Archive

 

April 2013

ALPSfailure_handouts_130404_02-e
countermeasures_handouts_130417_02-j emergencyresponse_handouts_130408_02-e
fish_130412-e
fish_130426-e
fish_handouts_130426_03-e
Fukushima reservoir tank may have leaked contaminated water _ Kyodo News
groundwaterdiversiontesting_handouts_130426_02-j
marinetransit_handouts_130327_01-e
MSIVinspectionu2_handouts_130416_06-e
new_radprotectiontules_handouts_130328_01-e
ocean_soil_130415-e
pond_details_handouts_130409_07-e
pondgraphhandouts_130410_03-j
pondleaks_handouts_130411_03-j
pondleaks_handouts_130415_05-e
pondradschosui_13041001-j
ponds_transferplan_handouts_130408_03-e
pondstatistics_handouts_130407_01-e
pondworkhandouts_130412_07-e
portconcrete_handouts_120718_02-e
Radiationoutsideponds_chosui_130408-e
rats_ handouts_130422_02-e
rats_handouts_130422_06-e (1)
roadmap_m120625-e
tank3leaking_handouts_130407_03-j
TEPCO _ Water Leak from the Underground Reservoir No.2 in Fukushima Daiichi Nuclear Power Station (Follow-up Information No
TEPCO _ Water Leak from the Underground Reservoir No.2 in Fukushima Daiichi Nuclear Power Station (Follow-up Information No2
TEPCO _ Water Leak from the Underground Reservoir No
U2_guidepipe_handouts_130426_08-e
U2_torusinsp_handouts_130412_08-e
U3_skimmerhatch_handouts_130419_05-e
WaterPondTransfer_chosui_13040902-e
waterstoragecapacity_handouts_130409_09-e
WaterTankBackgroundInfo_130406_05-j
watertransferplanponds_handouts_130410_08-e (1)

February – March 2013

bypasswater_handouts_130327_03-e
CaskstorageSafetyPlan130312j0301
contaminatedwatertesting_handouts_130329_01-e
CurrentWorkerExposures_130131e0101 (1)
Daiichi_Dainni_fallout_130222-e
fish testinghandouts_130228_02-e
fish_130208-e
fish_readings_handouts_130228_03-e
Fuku_power_water_diagrams_N11-02_TEPCO_IEEEpresenkawanorev8
FUKUDemolitionToIAEA_Suzuki_d
FukuRadiationReadingsPlantGrounds_f1-sv2-20130307-e
intake_canal_130312-e
MastinspectionU3_handouts_130213_01-e
mouse_handouts_130320_03-j
Photodumpimagelist_handouts_130201_01-j
Powerlineschematic_handouts_130325_04-e
radiationreadings_f1-sv3-20130322-j
ratpowerout_handouts_130320_02-e
Reactor_Core_Status_U1_110515e10
ReactorstateTimelines110524e13
seawater_130315-e
shinfukushima_110516e19
SR90_nearfuku_soil_130307-e
strontium_soil_130307-e
TEPCO _ Press Release _ The Estimated Amount of Radioactive Materials Released into the Air and the Ocean Caused by Fukushima Daiichi (As of May 2012)
TEPCOinjectnitrogenU1torusFeb26_2013
TEPCO_HPCI_handouts_110728_04-e
TEPCOtimeline110618e15 (1)
TEPCOtimeline110618e15+%281%29.unlocked (2)
TIPSprobe_handouts_130301_04-j
tritium_handouts_130228_04-e
TrussRemovalU3_piece_broke_handouts_130206_01-e
U1_containmentwaterlevel_handouts_121015_05-e
U1_datarecorder_f1_6_Katogensho1
U1_torusday1_handouts_130220_02-e
U1_torusday2_handouts_130222_05-e
U1radsallfloorsf1-sv3-20130227-e
U2_inspectionContainment_handouts_130319_03-e
U2_march6_torusinspection_handouts_130306_02-j
U2_torus_finalinspection_handouts_130315_01-e
U2_torus_handouts_130314_01-e
U2_torusinspection_handouts_130305_01-e
U2_torusinspection_handouts_130313_03-e
U2blowoutpanel_handouts_130306_01-e
U2torusholeinsp_handouts_130322_02-e
U3_wastestorageleak_handouts_130304_01-e
U3beamremoval_]handouts_120924_03-e
U3cranelocation_handouts_121015_01-e
U3desalination_handouts_130318_01-e
U3mastfallintopool_handouts_120208_02-e
U3mastlocation_handouts_120213_01-e
U3poolmap_handouts_121015_01-e
3sfpvideos_handouts_130221_01-e
U4_soundness_handouts_130213_02-e
Unit 2 CRD Scope handouts_130301_02-e
watertesting_intake_canal_130312-e

January 2013 

AirSamplingBuildings_130123-e
commonpoolfire130124e0101
DecontaminationMachineRepair_handouts_121227_01-e
DisasterOverviewDocf12np-gaiyou_e_1
execreorg121226e0201
groundwaterbypassupdate_handouts_130128_04-e
U3_PCV_pipehandouts_130128_02-e
U3_ventupgrade_handouts_130128_02-e
U4_coverbuildinginstall_handouts_130108_01-e
U4coverconstruction_handouts_130115_01-e
WaterReadings_water_130111-e
watertransfer130123e0301
U3_SGTSvalvestate_handouts_111226_01-e
U4_SGTSvalvestate_handouts_110827_02-e

December 2012 

fractureddebris_r121203_02-j

AccidentProgression_121214e0202

CommonPoolInspection_handouts_121220_01-e

CommonPoolPaperTapeData_f1_2_ChartC

contract_workershandouts_121203_01-e

DecommChanges_handouts_121114_01-e

equipmentnameposition121203j0101

MAAPcode_handouts_120312_04-e

MidTermUpdatehandouts_121114_01-e

RoadmapUpdateSept2012_m120924-e

seismicanalysis121225j0101

seismicanalysis121225j0101unlocked.1-100.1-50

seismicanalysis121225j0101unlocked.1-100

seismicanalysis121225j0101unlocked.101-334

seismicanalysis121225j0101unlocked

seismicsafetyreportpressreleaseDec2012

SFPracksCommonPool_handouts_121220_01-e

solidwall_handouts_121226_01-e

TempSensors_121203j0101

TEPCO _ Press Release _ Submission of Report on the Current Seismic Safety and Reinforcement of the Reactor BuildingsU4

TEPCO_cask_fuelcycle_6-1_powerpoint

TEPCO_Cask_Testing_handouts_121217_02-j

TEPCOaccidenttimeline_121214e0202

TEPCOreviewactions_121214e0201

U3_beamremoval_handouts_121220_03-j

U3_leakyhoses_handouts_121212_01-e

U3_SFP_cleanout_handouts_121219_02-e

U4_structuralheatanalysis_handouts_121225_01-e

U5_6_Maintenance121227e0401

U5_6_maintenanceplan121227e0401

Updates_120403e0101

WHOexposure_handouts_121206_01-e

November 2012

DainiMarch2011rads_handouts_121119_02-j

Unit 3 PCV Gas Control System Duct Inspection at Fukushima Daiichi handouts_121126_02-e

Unit 3 PCV Gas Duct & Hatch Inspection handouts_121128_01-j

 

Third Soundness Inspection of Unit 4 Reactor Building at Fukushima Daiichi handouts_121129_01-e

Third Soundness Inspection of Unit 4 Reactor Building at Fukushima Daiichi In Japanese - handouts_121129_01-j

water mapping 121128e0101

worker exposure 121031j0301

October 2012

RoadmapSpentFuel_t121022_01-e

12102611_table_summary-e

handouts_110923_02-e unit 1 hydrogen in pipe system 9-2011

handouts_121003_01-e Unit 2 RPV Alternative Thermometer Installation

handouts_121015_02-e The Water Leakage at the Accumulated Water Transferring Pipe in Unit 3 Turbine Building

roadmap_m121022_05-j

workerexposure121031j0301

 

September 2012

Detection of Xe135 at Nuclear Reactor of Unit 2, 111104e19

福島第一原子力発電所の原子炉建屋の現状の 耐震安全性および補強等に関する検討に係る報告書120830j0201

data_1u_g-e Unit 1 data Sept 2012

The Reactor Pressure Vessel Temperature and the Amount of Water Injection to Reactor at Fukushima Daiichi Nuclear Power Station Unit 1 – 3_120904_03-e

Sampling Results of the Accumulated Water in Unit 1 Reactor Building Basement at Fukushima Daiichi_120921_01-e

Investigation of the Inside of Unit 3 Spent Fuel Pool Using an Underwater Camera at Fukushima Daiichi_120926_01-e

Timeline RoadMap Japanese m120924_05-j

seawater_120921-e

 

 

August 2012

Overview of TV conference system handouts_120809_10-e

Investigation of unused fuel from unit 4 handouts_120829_01-e

Radiation readings at Fukushima Daiichi in Japanese handouts_120802_01-j

Earlier investigation of unused fuel from unit 4 handouts_120828_01-e

Marine Soil Testing Fukushima Daiichi August 2012 handouts_120830_01-e

Results of the Second Soundness Inspection of Unit 4 Reactor Building at Fukushima Daiichi Nuclear Power Station_120830_02-e

handouts_120830_02-e_revised

Report on the Investigation Results of the Actual Radiation Control Implemented at Fukushima Daiichi Nuclear Power Station to the Ministry of Health, Labour and Welfare _120831_01-e

8_31_PlantStatus_120831_04-j

TEPCO _ Press Release _ Daiichi_WaterFlowIssue(Daily Report as of 3_00 PM, August 31)

July 2012 

Fukushima Nuclear Accident Analysis Report June 2012 120620e0102

Comparison table change security provisions reactor facility at the Fukushima Daiichi Nuclear Power Plant In Japanese 120712j0501

Unit 4 Spent Fuel Pool Alternative Cooling System Suspended at Fukushima Daiichi Nuclear Power Station (June 30,2012)  handouts_120702_01-e

Unit 2 Spent Fuel Pool Desalination Completed handouts_120702_02-e

Smoke Coming out from the Compressed Air System (IA system) Control Panel at Unit 6 Turbine Building Basement  handouts_120702_03-e

Unit 1 Reactor Building First Floor TIP Room and South Area Inspection (July 4, 2012)  handouts_120703_01-e

Completion of Debris Removal from the Upper Part of Unit 4 handouts_120711_01-e

Unused Fuel Removal from Unit 4 Spent Fuel Pool handouts_120719_02-e

Marine Soil Sampling Locations in the Port of Fukushima Daiichi Nuclear Power Station  handouts_120720_01-e

Documents Used in “TEPCO Fukushima Daiichi Nuclear Power Station Accident Technical Workshop”   handouts_120723_05-e

Documents Used in “TEPCO Fukushima Daiichi Nuclear Power Station Accident Technical Workshop”  handouts_120724_02-e

 June 2012 

Result of Water Level Measurement at Unit 2-3 Torus Room  handouts_120607_02-e

Fukushima Daiichi Nuclear Power Station Unit 2 Reactor Building Inspection  handouts_120612_01-e

Fukushima Daiichi Nuclear Power Station Unit 2 S/C Water Level Measurement by an Infrared Camera  handouts_120612_04-e

Decontamination technology development related to monitoring in Japanese handouts_120615_03-j

TEPCOearlyevents110618e15

 

May 2012 

Soundness Verification Results of Unit 4 5-25 handout

Nuclide Analysis Results of Fish and Shellfish June 2012  handouts fish sampling

Fukushima Daiichi Nuclear Power Station Unit 3 First floor of the reactor building TIP findings indoor environment in Japanese TEPCO_U3TIPSRobot_120524_08-j

Unit 3 TIPS Room handouts_120524_08-j

 

March 2012

TEPCO_MAAP_handouts_120312_04-e

 

January 2012

Installation of Multi-nuclide Removal Equipment m120123_03-e (1)

December 2011

tempgashandlingsys_handouts_111208_01-e

November 2011

MeltdownAnalysis_handouts_111130_04-e

September 2011

SeaWaterInj_handouts_110909_06-e

August 2011

handouts_110825_02-e

TEPCOAug_RadDataWorkers1110812d

TEPCOAug_RadWorkers2110812c

July 2011

Reactor status tape data released by TEPCO

f1_2_Chart5-04

f1_3_Keihou2

f1_3_Keihou3

f1_4_Nisshi3_4

f1_6_Katogensho5

f1_6_Katogensho3

f1_6_Katogensho2

f1_6_Katogensho1

f1_5_Process5

June_JulyPlantEventsLog

June 2011

SeaWater2_110613sanko_table_tyusui-e

May 2011

MonitoringPointData110528d

March 2011

3_14_2011TEPCO _ Press Release _ White smoke around the Fukushima Daiichi Nuclear Power Station Unit 3

3_15_2011TEPCO _ Press Release _ Damage to the Unit 4 Nuclear Reactor Building at Fukushima Dai-ichi Nuclear Power Station

Pre-Disaster TEPCO Documents 

2010, Nov. 30  Press Release Unit 4 goes out for maintenance.
https://docs.google.com/file/d/1G4CguHSJX-aWhkvw15drEmfA1eaDXIBg_p46u9DjQCKhnpiV83NMu8jTBHX8/edit

TEPCO earthquake tests
TEPCO safety retrofits
TEPCO 2010 report talks about extensive retrofits at another of their NPP’s but only mentions working on an interim study to do work in the future at Fukushima.
March 2010 TEPCO report of testing phase on page 11 of the document.
May 2010 document safety retrofits done at Fukushima by 2009
undated page from the completion of the earthquake resistant building at Fukushima but mentions the completion of no other work,
TEPCO’s most recent Tsunami safety report
TEPCO 2007 statement about Fukushima earthquake stability based on Kashiwazaki NPP
TEPCO 2007 press release about Fukushima related to the 2007 earthquake

2007 report KashiwazakiQuake070810-e

2007 reportKashiwazakiQuakeDamage200709-e

Fukushima Daiichi
Documents of pre-quake testing, events and the history.
Translated into English
What happened to the ostriches?

On-screen equipment overhaul of Unit 4

Shroud replacement

Local politicians visit the plant

Disaster drill

Radiation monitoring at the plant

Plant overview

Tepco museum

Tepco exhaust stacks

Shroud inspection and repair

Students tour the plant

Children’s ostrich painting contest

Object found in reactor 1 spent fuel pool on inspection

Suppression chamber inspection reactor 3 – purple extension cord pictured?

Reactor 6 shroud inspection, object found in reactor

Reactor 6 aluminum tape found in reactor pressure vessel

Deformed rod assembly washer Reactor 2

Reactor 6 ball bearings found in reactor vessel

Shellfish found in intake screen of reactor 2

Reactor 5 water heater vent pipe corrosion

Reactor 6 control rod drive inspection and foreign objects found in reactor vessel

Reactor 6 radioactive water leak by control rod drives

Reactor 4 foreign objects found in supression chamber

Reactor 3 inspection and MOX fuel load

Reactor 6 turbine overhaul

Reactor 1 sea water intake and piping inspection

Reactor 6 faulty indicator in moisture separator tank between turbines

Reactor 6 radioactive water leak

Reactor 6 radioactive water found in containment

Another radioactive leak at Reactor 6

Even more radioactive water leaks at Reactor 6

Reactor 6, pen, plastic bag and paper towels found in suppression chamber

Reactor 5 radioactive water leak

Reactor 5 leak into drinking water system

Reactor 4 oil leak in reactor building

Reactor 4 spent fuel pool metal shards found in pool

Reactor 3 defects in residual heat removal system valve

Reactor 3 duct tape in the supression chamber

Reactor 3 radioactive leak in turbine building

Reactor 3 containment leak

Reactor 3 leaking transformers
Reactor 2 turbine building leak

Reactor 2 leaking condensation pump

Reactor 1 spent fuel pool leaking

Duct tape found in spent fuel pool reactor 1

Reactor 1 emergency diesel generator failed upon inspection test

Reactor 1 containment leak testing

Reactor 6 heat exchanger foreign objects on inspection
Reactor 6 cooling pump inspection

Reactor 6 cooling pump output valve inspection

Smoke in reactor 6

Reactor 6 foreign objects in supression chamber

Coolant recirculation coolant pump schematic

Reactor 6 restart after inspection

Reactor 6 restart

Reactor 6 containment testing

Reactor 5 containment testing

Reactor 4 containment testing

Reactor 4 reloading fuel

Reactor 4 debris in spent fuel pool

Reactor 4 metal cover falls into reactor well

Reactor 4 foreign objects in spent fuel pool

Reactor 4 more foreign object in spent fuel pool

Reactor 4 turbine corrosion on inspection

Reactor 3 control room damage

Reactor 3 wire brush pieces found in control rod drive after failed test

Reator 2 pressure test and tour

Reactor 2 deformed fuel assemblies

Reactor 2 problem with steam separator in RPV

Reactor 2 radioactive leak in heat removal system

Reactor 2 transformer replacement

Reactor 2 water pump overhaul

Reactor 2 removed garbage from the intakes

Reactor 1-2 exhaust stack malfunction

Reactor 1 fuel reload
Reactor 1 water level gauge recalibration

Reactor 6 reactor cap inspection

Reactor 6 valve replacement after Hamaoka had damage

Reactor 6 main generator repair 
Reactor 6 water pump inspection

Reactor 6 fuel inspections

Reactor 6 emergency diesel generator inspection

Reactor 6 steam turbine inspections

Reactor 6 turbine inspections

Reactor 6 steam turbine repair

Reactor 6 main generator repair

Reactor 6 refueling

Reactor 6 disassembly

Reactor 5 refueling

Reactor 4 low pressure condensation pump inspection

Reactor 4 high pressure condensation pump inspection

Reactor 4 cracks in the shroud

Reactor 4 more shroud crack inspection

Reactor 4 borate injection system check

Reactor 4 emergency core cooling system check

Reactor 4 emergency diesel generator test

Reactor 3 control rod drive problem

Reactor 3 control rod drive problem part 2

Reactor 3 steam turbine repairs

Reactor 3 circulating water pump test

Reactor 3 turbine feed pump inspection

Reactor 3 steam safety valve inspection

Reactor 3 replace water heater

Reactor 3 intake screens

Reactor 3 water heater degrading

Reactor 3 control rod drive inspection

Reactor 3 refueling

Reactor 3 MOX install

Reactor 3 disassembly

Reactor 1 control rod drive assembly leak

Reactor 1 leak rate testing and inspection fraud

Reactor 1 nitrogen pressure test

Reactor 1 pressure test valve

Reactor 1 more on pressure testing

Reactor 1 pressure test specs and schematic

Reactor 1 pressure test post forced shut down

Overview on pressure testing and leakage

Radioactive waste removal from the plant

Security staff combat training

2005 study of leakage in water

Site inspections by local groups

Spent fuel casks shipped out

Tours of the plant by local residents

2003 nuclear emergency training

Inspection of control rod drive mechanism in reactors 1, 3, 4

cracks in shrouds and jet pumps at Fukushima

Reactor 3 control rod drive cracks and damage

Spent fuel storage situation

Reactor 4 emergency preparedness tour

Solidified radioactive waste found

Radiation monitoring posts

Reactor shroud replacements

Reactor 6 fuel loading incident

Reactor 5 smoke in turbine building

Reactor 3 control rod drive system damage

2002 emergency disaster drill

Reactor 4 intake screen inspection

Reactor 1

Reactor 3 containment removal (notice the images are labled as reactor 5)

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