progress status classified by issues (photos and figures

Implementation Status Reference (Photos and Figures)Countermeasure [76]Improvement ofworking environment

Removal of debris, Measurement ofradiation dose, Entrance into thebuilding (May 9)RPV water level gauge calibration (May10)PCV pressure gauge calibration (May11)Installation of water level gauge atbasement of Reactor Building (May 27)Installation of temporary RPV pressuregauge (Jun. 3)

Countermeasure [11]Nitrogen gas injection

Implementing from Apr. 6

Progress Status Classified by Issues (Photos and Figures)Issues

Unit 1

(1) Reactor

I. Cooling

Countermeasures

System outline of nitrogen gas injection

Nitrogen gas supply apparatus

Checking thereactor buildings by Packbot

Measuring radiation doseinside the reactor buildings

Reference 2

Installing temporary RPVpressure gauge

Nitrogen gassupply apparatus

Inert gas systemReactor building

August 17, 2011Tokyo Electric Power Company

1

Implementation Status Reference (Photos and Figures)Countermeasure [13]Securing heatexchange function forthe reactor

- Due to the leakage from the primarycontainment vessel (PCV), we judgedthat it is difficult to secure water level ofPCV.- Therefore, we changed the plan togive priority to the establishment ofcirculating water cooling for the reactor.- We are studying the reactor coolingsystem by using heat exchanger as amid to long term solution.

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

(work implemented)- Completed the assembly of coolingtower unit and shielding equipment toreduce exposure dose for outdoor work　(from May 17 to Jun. 17)


I. Cooling

(1) Reactor

Unit 1

Countermeasures

Shielding equipment toreduce exposure dose for

outdoor work

[Under consideration] Outline of circulatingcooling system within the reactor building

Demolished and removed debrisat the truck bay door, whichwould have been obstacles forinstallation of alternative coolingfacilities (from May 10 to May 15)

PCV

Reactor Building

Heat Exchanger Cooling TowerUnit

Basement (Torus)SubmergedPump

Inside reactor building of Unit 1in front of the truck bay door

Plate-type heat exchanger Cooling tower unit

Jun. 3, Completion of assemply of cooling uniton the trailer

2

Implementation Status Reference (Photos and Figures)Countermeasure [14]Cooling by minimumwater injection rate(Cooling by waterinjection)

- Implementing water injection at therate of approx. 3.5m3/h from Jun. 22

Countermeasure [16]Sealing the leakagelocation

- Under examination on theimplementation as mid to long termmeasures.

Countermeasure [9]Flooding the PCV


Countermeasures[12,45]Consideration andpreparation of reuseof processed water

- Work on injection line (from May 21)- Started circulating water cooling fromJun. 27

Countermeasures[12,14,45]Initiation andimplementation ofcirculating watercooling

- Started circulating water cooling fromJun. 27


I. Cooling

(1) Reactor

Unit 1

Countermeasures

Filling water up to thetop of fuel range

Water injectionto reactor

RPV

D/W

S/C S/C

Fuel

Image of flooding the PCV Inspection of water level gauge

System outline of water reuse as reactor coolant byprocessing accumulated water

クローズドサイクル

タービン建屋(T/B)

給水系に接続

原子炉建屋(R/B)

PCV

T/Bに流入

RPV

淡水注入

ポンプ

タンク

淡水化設備

汚染水処理設備

クローズドサイクル


給水系に接続


PCV

T/Bに流入

RPV

淡水注入

ポンプ

タンク

淡水化設備クローズドサイクルクローズドサイクル


給水系に接続


PCV

T/Bに流入

RPV

淡水注入

ポンプ

タンク

淡水化設備

汚染水処理設備

Circulatingwater cooling

R/BT/B

Outflow to T/B

Injection toReactor

Connection tofeed water line

Pump

Tank

Decontamination

Desalination

R

3


Check radiation dose, entry intobuildings.(May 18, May 26, Jun. 4, Jun. 11)Started local exhausters, purificationoperation (from Jun. 11 to Jun. 19).

Countermeasure [11]Nitrogen gas injection

In operation from Jun. 28.

Countermeasure [13]Secure heatexchange function

- Prioritize the achievement of circulationcooling of reactors by circulating water cooling.For the reactor cooling system using heatexchanger, under examination on itsimplementation as mid to long term measures.

Countermeasure [6]Consider on sealingmethodology ofleakage location ofPrimary ContainmentVessel.

- Conducted laboratory test on sealingmethodology.





Countermeasure [14]Cooling at minimumwater injection rate(cooling by waterinjection)

- Implementing water injection at the rateof approx. 3.5 m3/h from Jun. 22.

Countermeasures[12, 45]Consideration andpreparation of reuseof accumulatedwater

- Construction of water injection line(from Apr. 9)- Started circulating water cooling fromJun. 27.

Countermeasures [12,14, 45]Initiation andimplementation ofcirculating water cooling

- Started circulating water cooling fromJun. 27.


I. Cooling

(1) Reactor

Unit 2

Countermeasures

T/B

R/B

Image of the countermeasure: Sealing the damagedlocation of Primary Containment Vessel.

Filling with grout material

Waterinjection

Discharge ofwater

Exhaust ofair

Drilling the 1st floor of the reactorbuilding, filling the whole torus roomwith grout material.

4


- Removal of debris, check exposure dose,entry into buildings. (May 18, Jun. 9)- Clearance work using robots (Jul. 1)- Placement of steal boards at truck bay door(Jul. 4)

Countermeasure [11]Nitrogen gasinjection

In operation from Jul. 14.

Countermeasure [13]Secure heatexchange function

- Prioritize the achievement of circulationcooling of reactors by circulating water cooling.For the reactor cooling system using heatexchanger, under examination on itsimplementation as mid to long term measures.





Countermeasure [14]Cooling at minimumwater injection rate(cooling by waterinjection)

- Implementing water injection at the rateof approx. 9 m3/h from Jun. 24.

Countermeasures[12, 45]Consideration andpreparation of reuseof accumulated water

- Construction of water injection line(from Apr. 16)- Started circulating water cooling fromJun. 27.

Countermeasures [12, 14,45]Initiation andimplementation ofcirculating water cooling

- Started circulating water cooling fromJun. 27.


I. Cooling

(1) Reactor

Unit 3

CountermeasuresDemolished and removed debris at the truck bay door, which would have been obstacles forinstallation of alternative cooling facilities for Unit 3's reactor.

(After removal May 25) (After removal May 30) (After removal Jun. 4)

Truck bay door/ collapsed outside pillars Truck bay door/ InsideMachine hatch space on the 1st floorof the reactor building

Situation of demolishing and removing debris

Removal of outside pillarsusing wirelessly-controlled

backhoe

Removal of debris usingBrokk

(wired remote control)

Container loading usingshielded forklift

5

Implementation status Reference (Photos and Figures)

Countermeasure [24]Restoration of normalcooling system

- Radiation measurement by γcameraand robot (from Apr. 30 to May 6)- Radiation reduction by flushing andshielding facility (from May 11 to May15)- Water injection through normalcooling system (from May 29)

Countermeasures[25,27]Installation of heatexchanger

-Circulating cooling system is underoperation (from Aug. 10.)

Countermeasure [22]Continuation of waterinjection by "Giraffe",etc

- Standby as backup after restoration ofnormal cooling system- Reliability improvement: enhanceddurability of hoses- Measures to reduce radiation dose:switch to remote-controlled operation (arm, water injection operation)


I. Cooling

(2) Spent Fuel Pool

Unit 1

Countermeasures

Image of remote control operation of concrete pumping vehicle

lighting

reactor building

wireless LAN

3 cameras for monitoring overallsituation

(installed per unit)

control box 7 cameras to monitor gauges inthe vehicle

control box

slope

arm

camera

shield

radio connecting station

control from telecommunication room

image/view

main anti earthquakebuilding

observatory

able to control from observatoryusing mobile station vehicle

internal network

connecting box(installed per unit)

optical fiber

wireless LANantenna

Overview of SFP cooling functionExisting heat exchanger

Air fin coolerAir fincooler

SecondarySystem

Secondary SystemPump

SurgeTank

PrimarySystem

FPC Heat Exchanger

Line

SafetyValveLine

DrainLine

Vent

Original Line

Primary System Original Line

Secondary System Temporary LineOutside Water Injection Line

Outside

Reactor Building

Skimmer Surge Tank

Spent Fuel Pool

FPC Pump

WaterInject-tion

wireles

6

Implementation status Reference (Photos and Figures)Countermeasure [23]Restoration ofnormal coolingsystem

- Continuing


- Installation work of heat exchangercompleted. Circulating cooling systemis under operation (from May 31).

Countermeasure [22]Continuation of waterinjection by "Giraffe"etc

- Standby as backup after restoration ofnormal cooling system- Reliability improvement: enhanceddurability of hoses- Measures to reduce radiation dose:switch to remote-controlled operation


- Confirmation of system integritythrough water level measurement by"Giraffe," etc. (from May 8 to May 15)- Water injection through normalcooling system (from May 16 to Jun.29)


- Installation work of heat exchangercompleted. Circulating cooling systemis under operation (from Jun. 30).

Unit 3

(2) Spent Fuel Pool

I. Cooling


Unit 2

Countermeasures

Unit 3 Spent Fuel Pool

Debris in Unit 2 Waste Treatment Building

Unit 3 Heat Exchanger Unit

Unit 2 Heat Exchanger Unit

7

Implementation status Reference (Photos and Figures)Countermeasure [22]Continuation of waterinjection by "Giraffe"etc

- Reliability improvement: enhanceddurability of hoses- Measures to reduce radiation dose:switch to remote-controlled operation- Installation of water level gauge (fromApr. 22)


- Water injection by installingalternative equipment of "Giraffe" (from Jun. 17)


- Installation work of heat exchangercompleted. Circulating cooling systemis under operation (from Jul. 31).


I. Cooling

(2) Spent Fuel Pool

Unit 4

Countermeasures

Alternative equipment to "Giraffe" at Unit 4

FiltrateTank

FHM

SF

PDebris

Injection hose(Metal flexible hose)

FHM fixture for arm rail

65A Fire hose(Eflex curing)

Water injection by "Giraffe" at Unit 4

Unit 4 Heat Exchanger Unit Air Fin Cooler

8

Progress Status Classified by Issues (Photos and Figures)Implementation status Reference (Photos and Figures)

Countermeasures [37, 39,42] Securing sufficientplaces to storecontaminated water

- Transferring to Centralized WasteTreatment Facility (Process MainBuilding and High-temperatureIncineration Building) after checkingnon-existence of water leakage

o Process Main Building:　　After checking non existence ofwater leakage etc., resumedtransferring accumulated water fromUnit 2 Turbine Building. (April 19)

o High-temperature IncinerationBuilding:　　After checking non existence ofwater leakage etc., resumedtransferring accumulated water fromUnit 3 Turbine Building. (May 17)

　

Issues Countermeasures

High level

(3) Accum

ulated Water

II. 　 Mitigation

T/B at Unit 3 T/B at Unit 4T/B at Unit 1 T/B at Unit 2

Unit 1R/B

Unit 2R/B

Unit 3R/B

Unit 4R/B

Vertical Shaftat Unit 2

Hatch atUnit 3

Centralized WasteTreatment Facility

ProcessMainBuilding

High-temperatureIncinerationBuilding

<Transferring into Centralized Waste Treatment Facility>

Tanks to receive processed water(H1 area)

Underground tanks for processed water(Highly contaminated water)

9


Countermeasure[64]Consideration of mitigationof contamination in theocean

-　Completed setting up silt fence (Apr. 14)-　Preparation construction for setting steelpipe sheet piles[Completed removing curtain wall]

-　Purification of sea water by circulatingpurification system 　(from Jun. 13)- Completed setting up sliding concrete wall atintake of Unit 1 to 4 (Jun. 29)

- Started shipping steel pipe sheet pile (fromAug. 10)( Shipping steel pipe sheet pile the port inorder to implement translucent preventionwork and repair the blocks damaged bytsunami at the south side of intake canal ofUnit 1 to 4)

Countermeasure [65]Containment of high levelradioactive water

- Closure of sea water piping verticalshaft Unit 2: completed on Jun. 2, Unit 3: completed on May 26, Unit 4: completed on Apr. 6- Closure of pits and others Unit 1: completed on May 17 Unit 2: completed on Jun. 9 Unit 3: completed on Jun. 10 Unit 4: completed on Jun. 10


II. 　 Mitigation

(3) Accum

ulated Water

High level

取水口角落しの設置状況（２号機の状況）取水口角落し（作業状況）

Closure of sea water piping vertical shaft(left: before closure, right: after closure)

Sliding concrete wall at intake(Setting work)

Sliding concrete wall at intake (Unit 2)

Closure of pit(left: before closure, right: after closure)

<Appearance of the system><Adsorption of cesium by zeolite>

zeolite

Watering pipe

pump

Shipping steel pipe sheet pile

10


[Decontamination of Contaminated Water]Started on Jun. 17- Cesium adsorption instruments　(Kurion)　+ Radioactivity treatment apparatus(Areva)　Processing started on Jun. 17- 2nd Cesium adsorption apparatus(SARRY): Planned to start on Aug. 18

[Desalting of Contaminated Water]- Water Desalinations (RO method):　　　Processing started on Jun. 17　　　Second phase of constructioncompleted on Jul. 20- Water Desalinations (Distillingequipment): Start treatment on Aug. 7 (Toshibaportion) Plan to start treatment on Aug. 20(Areva portion)

[Storage of sludge waste]- Storing sludge waste in the pellet storagetank- Additional sludge waste storage tanksare under preparation

Countermeasures [38,43]Installation of TreatmentFacility/Continuance ofElimination andTreatment ofContaminated Water inthe Building


II. 　 Mitigation

(3) Accum

ulated Water

High level

Tanks for receivingprocessed water

Scrubber

Coolingtower

Preheatedundilutedsolution tank Vaporizing

condenser

Retentionsolutiontank

Chemicaltank

(Example: Toshiba)

III.　Decontaminationapparatus

IV. Desalinationapparatus 1

(Reverse osmosis)

V. Desalinationapparatus 2(distillation)

II. Cesium adsorptionapparatus

<Decontamination flow of contaminated water>

I. Oil separators

Oil Tank

Nuclidecoprecipitation(adsorption)

Coagulationsettling

Waste Liquid Tanks

～～～～

Cesiumabsorption tower

PostFilter

11

Progress Status Classified by Issues (Photo and Figures)Implementation status Reference (Photos and Figures)

Countermeasures [38,43]Installation of TreatmentFacility/Continuance ofElimination andTreatment ofContaminated Water inthe Building


High level

(3) Accum

ulated Water

II. 　 Mitigation

Installation of lifter forchanging adsorption towers

Expansion of Decontamination Capacity

AREVA(France)

Kurion(USA)

SARRY（USA, Japan）

Cesium adsorption towersInstallation of Cesiumadsorption tower

Removes oil etc

Removes Cs. Front row containslow level adsorption material, theback row contains high level

Install special heavy machinery for lifting (hydraulic) andtransfer machinery indoors, remove and transfer wasteadsorption tower

Containment weight=24tons

20 - 25m3/h/line x 2 lines = 40 - 50m3

12

Progress Status Classified by Issues （Photos and Figures）Implementation status Reference (Photos and Figures)

Increase of storage capacity and continuationof decontamination of contaminated water- Installation of tanks for processed water:　Waste liquid RO Supply B Area 6,200t （May 31) RO processed water temporary storage tank D Area 5,000t （May 10) RO condensed water temporary storage tank E Area 8,000t （May 22) RO condensed water storage tank H Area 32,000t (Aug 15) Evaporation treatment fresh water storagetank H Area 5,000t (Jul 21)Evaporation waste liquid storage tankH Area 5,000t (Jul 31)- Low level tank F Area 12,200t （May 31)- Megafloat 10,000t (May 21)

Utilization of decontaminant (zeolite) Setting in water, self-circulation and adsorption of Cesium by zeolite

Decontamination of accumulated water in Unit 6 T/B after transferring to receiver tanks for low level water

Full-scale operation (from May 1)


II. 　 Mitigation

(3) Accum

ulated Water

Low level

Countermeasure [40, 41]Increase storagecapacity /decontamination

<Megafloat> <F Area Tanks><Square shape tanks> <Round shape tanks>

Decontaminant (zeolite)

13

Implementation status Reference (Photos and Figures)- Closing of vertical shaft of sea waterpipe Unit 2: Completed on Jun. 2 Unit 3: Completed on May 26 Unit 4: Completed on Apr. 6

- Closure of pits, etc. Unit 1: Completed on May 17 Unit 2: Completed on Jun. 9 Unit 3: Completed on Jun. 10 Unit 4: Completed on Jun. 10

-Considering underground water flowbased on seepage analysis-Under investigation of undergroundwater level, water quality, etc. by boring.<next step>-Evaluate the water shield effect,earthquake resistance, durability, etc.then consider the most appropriatemethod to shield underground water-Implement study for optimization ofshielding section, installation plan.-Start construction for sea side areaduring Step 2-Investigate and study for landward areaby the end of Step 2

Countermeasure [66]Consideration of mitigationmeasures of groundwatercontamination

II. Mitigation

Progress Status Classified by Issues (Photos and Figures)Issues Countermeasures

(4) Groundw

ater

Countermeasure [68]Construction of shieldingwall of groundwater

Countermeasure [67]Implementation ofmitigation measures ofgroundwater contamination

- Restoration of sub drain pump Installation of pumps at sub drainpits on T/B side. Completed at 7 pointｓ on Jul. 29　　Laying the transfer pipingarrangement Considering locations to install thepumps on R/B side

- Sub drain management along withexpansion plan of storage/processingfacility.

P

仮設ポンプ

0～1m

Ｔ／Ｂ地上仮設タンクへ

水位計

制御盤

サブドレンピット

サブドレンポンプ管理イメージ図

Image for groundwater shielding

Seawall Shielding wall (Ocean side)

【Image for shielding wall (Ocean side)】

Ocean

Approx. 30m

LandfillPermeable layer

Permeable layer

Low-Permeable layer

Low-Permeable layer

Image for groundwater shielding

Seawall Shielding wall (Ocean side)

【Image for shielding wall (Ocean side)】

Ocean

Approx. 30m

LandfillPermeable layer

Permeable layer

Low-Permeable layer

Low-Permeable layer

Image of sub drain pump control

temporarypump

water level gauge

sub drain pit

to temporary tank on the ground

controlpanel

Putting in crushed stone Concrete placement Mortar placement

Image of groundwater shielding

#2

R/B

#3

R/B

#4

R/B

#1

R/B

#1 T/B #2 T/B #3 T/B #4 T/B

R/B：原子炉建屋

T/B：タービン建屋

遮水壁（海側）

遮水壁（陸側）

埋立

防波堤

既設護岸

Breakwater

Landfill

Shielding wall ( Ocean side)Seawall

Shielding wall ( Land side)

Turbine buildingReactor Building

14

Implementation Status Reference (Photos and Figures)

(5) Atm

osphere / Soil

Progress Status Classified by Issues (Photos and Figures)

Issues CountermeasuresCountermeasure [52]Dispersion of inhibitors

II. 　 Mitigation

[Present Status]Completed dispersion of inhibitor

○Record of dispersion : Approx. 560,000m2

<Inside power station (flat land andslope)> : Approx. 400,000m2

-Test dispersion (Apr. 1 to Apr. 25) : Approx. 30,000m2

-Full dispersion (Apr. 26 to Jun. 28) : Approx. 370,000m2

<Around buildings> : Approx. 160,000m2

-Dispersion using crawler dump truck(Apr. 26 to Jun. 27) Around buildings of Unit 1 to 4, 5and 6 : Approx. 120,000m2

-Dispersion by bending spray towervehicle (May 27 to Jun. 4, Jun. 10) Turbine building of Unit 1 to 4, roofand wall of reactor building of Unit 2 : Approx. 30,000m2

-Dispersion by concrete pumpingvehicle (Zebra) (Jun. 8,9,18) 　Roof and wall of reactor building ofUnit 1,3,4 : Approx. 10,000m2

Hereafter, we keep monitoring status ofsolidification and others at dispersedarea.

Dispersion of inhibitors around buildings ofUnit 1 to 4 by crawler dump

Dispersion of inhibitors by bending spray tower vehicle

Dispersion of inhibitors in the Power Station (slope)

15


(5) Atm

osphere / Soil


Issues CountermeasuresCountermeasure [52]Dispersion of inhibitors

II. 　 Mitigation

発電所構内(平面)への散布後After dispersion of inhibitors in the Power Station(flat surface)

Dispersion of inhibitors in the Power Station (slope) Dispersion of inhibitors in the Power Station (slope)

After dispersion of inhibitors in the Power Station(slope)

Dispersion of inhibitors in the Power Station(flat surface)

After dispersion of inhibitors in the Power Station(flat surface)

After dispersion of inhibitors in the Power Station(slope)

16

Implementation Status Reference (Photos and Figures)- In order to mitigate exposure dose ofthe workers and improve workefficiency at the site, we have startedremoving the debris after storing themin the containers using remote-controlled heavy machinery (hydraulicshovel, crawler dump, bulldozer) (fromApr. 6).

- Almost all of the debris in highly-radioactive area, outside the buildingsof Unit 1 to 4 (airborne radiation10mSv/h or higher) are removed .

<Record of removing debris as of Aug.17>- Approx.700 containers of debris areremoved.

<Plan for further implementation>- We will continue removing outsidedebris, that hinders work.

II. 　 Mitigation


(5) Atm

osphere / Soil

Countermeasure [53]Removal of debris

Removing debris with remote-controlled heavy machinery

（Container：3.2×1.6×1.1m、Approx.4m3）

Around reactor building of Unit 1 (Jun. 9)

Road at the ocean-side near Unit 1 Turbine BuildingBottom of the slope at the south side of Centralized Waste TreatmentF ilit

Between reactor buildings of Unit 2 and Unit 3Around reactor building of Unit 1

17

Implementation Status Reference (Photos and Figures)《Unit 1》・ Started preparation work ※

（from May 13）・ Maintenance of roads for crane ・ Creation of slope for crane to crawl ・ Maintenance of shallow draft quay・Began main structure construction work (from Jun.28)

・Began steel frame work （from Aug.10）


(5) Atm

osphere / Soil

II. 　 Mitigation

Countermeasure [54]Installation of reactorbuilding cover

Image after installation ofreactor building cover for Unit 1

※

Installation model of reactorbuilding cover for Unit 1

Preparation work (Improvement of condition of shallow draftquay, completion of laying steel plates (finished on Jun. 11))

Before Laying pavement and leveling

Preparation work (road for crawler crane）

《Unit 1 progress status》

Laying steel plates

18


II. 　 Mitigation

(5) Atm

osphere / Soil


Countermeasure [54]Installation of reactorbuilding cover

Status of preparation work (shallow draft quay～road for crawler crane)

Temporary assembly of reactor building cover for Unit 1 (at Onahama Port) Assembly of steel frames

Assembly of steel frames

１９

Implementation Status Reference (Photos and Figures)<Unit 3,4>- Commencement of preparation work Unit 3; from Jun. 20 Unit 4; from Jun. 24

(5) Atm

osphere / Soil


II. 　 Mitigation

Issues CountermeasuresCountermeasure [84]Removal of debris on topof reactor buildings

Preparation work for reactor building cover for Unit 3 Preparation work for reactor building cover for Unit 4

Maintenance of roads for large-size crane Maintenance of working area for large-size crane

Assembling heavy machinery for dismantling debris around buildings

Maintenance of working area for assembling steel frames Removal of debris

Assembling heavy machinery for dismantling debris around buildings

20

Countermeasures Implementation Status Reference (Photos and Figures)


Countermeasure [60,61]Expansion, enhancement andannouncement of monitoring

III. Monitoring/D

econtamination

(6) Measurem

ent, Reduction and D

isclosure

　Continue monitoring in and out of the power station

[Land area]<Monitoring within 20km radius of the periphery>・ Monitoring of aerial radiation dose rate at 50 points by Utility Support Team (once a week)・ Land sampling at 50 points and additional points (approx. 50 points) by Utility Support Team (Jun. 10, 13, 30, Jul. 2 and 8)・ Dust sampling at 5 points near 10 km radius of the periphery (Aug. 5)・ Monitoring at the time of nitrogen injection to the PCV of Unit 3 (Jul.13～29)

<Monitoring within the site>・ Monitoring of airborne radioactivity concentration around the West Gate (everyday)・ Monitoring of radioactivity concentration at the upper part of reactor buildings by a concrete pumper, etc.(every 1 month): Unit 1 (May 22, Jun. 22, and Jul. 24), Unit 4 (May 23, Jun.18), Unit 3 (Jun.13, Jul. 12, 13, and 23), Unit 2 (Jul.22)・Measurement of airborne radioactivity concentration at 12 points in the site (once a week,once a month)・Measurement of radioactive material fallout in the air (once or twice a month) at 10 points outside of the site・Mitigation measures on backgrounds of monitoring posts (mitigation of the impact from land etc.) MP8 (done on May 20), MP3 (done on May 23)

Soil sampling by the Utility Support Team (Within 20 km radius)

福島第一　空気中の放射性物質濃度の推移

Sampling by concretepumping vehicle

20km圏内の空間放射線量率測定結果（測定日：平成23年8月5日）

1.0E-07

1.0E-06

1.0E-05

1.0E-04

1.0E-03

1.0E-02

1.0E-01

3/19 3/26 4/2 4/9 4/16 4/23 4/30 5/7 5/14 5/21 5/28 6/4 6/11 6/18 6/25 7/2 7/9 7/16 7/23 7/30 8/6

I-131(合計値）

Cs-134(合計値）

Cs-137(合計値）

告示濃度(Bq/cm3)Cs-137 3E-５Cs-134 2E-５I-131 ５E-６

Trend of density of radioactive materials in the air at Fukushima Daiichi

(Total)

(Total)

(Total)

Notificationconcentration

ＷＳＷ

ＳＷ

49 4.8

40 2.0

39 4.0

32 1.7

43 3.1

1 0.5 6

1.8

13 5.0

15 18.6

36 29.6 34

3.4

45 11.0

18 7.0

41 1.9

33 1.2

31 1.2

20 22.2

12 7.5 7

1.８

25 3.5 24

1.0

44 2.2

ＳＳＷ

Ｓ

30 24.1

23 20.0 28

10.2

27 19.4

29 58.6

10 8.9

11 4.1

48 0.8

46 16.3

50 18.0

Ｗ

37 73.6

35 14.6 26

3.6 38

11.2

47 34.6

42 4.1

22 7.3

ＷＮＷ

2 0.6

17 8.5

21 20.9

8 25.6

9 8.2

19 33.6

Ｎ

ＮＮＷ

ＮＷ

4 0.６

3 0.９

5 0.６

14 24.8

16 5.7

20km

10km

5km

3km

5km

3km

10km

20km Upper: Point No.Lower: Radiation dose rate （μSv/h）

Measurement result of aerial radiation dose rate ofwithin 20 km radius (date: Aug. 5, 2011)

２１

Countermeasures Implementation Status Reference (Photos and Figures)Countermeasure [60,61]Expansion, enhancement andannouncement of monitoring

<Ibaraki Prefecture>　　 <Miyagi Prefecture> ・Seawater 5 points ・ Seawater 6 points(Apr.29～once a week) 　 (Jun.21～ twice a month)　　　　　　　↓Jun. 7～ twice a week


(6) Measurem

ent, Reduction and D

isclosure

III. Monitoring/D

econtamination

[Ocean Area]<Fukushima Prefecture>　・Seawater 16 points(Apr.17～)　　↓

Issues

－福島県　前面海域採取点－

① ②

⑦

⑧

⑩

③

④

⑨

⑪

⑫

⑯

⑰

⑱

⑲ ⑳

M10

⑬

⑭ ⑮

⑤

⑥

MA

MS

21

22

凡例（Cs-137 濃度による）

＞500Bq/kg

250～500Bq/kg

100～250Bq/kg

50～100Bq/kg

＜50Bq/kg

30km 20km 福島第一

福島第二

○22 62 66

MS270 320

⑭150 170

⑮260 290

⑩73 85

⑥140 170

⑦50 60

⑧67 76

⑳330 390

○21

1200 1400

⑱240 260

①8700 9600

②1500 1700

③500 570

④440 490

Cs-134 Cs-137

（単位：Bq/kg）（Unit:：Bq/kg）

MA49 57

⑤120 130

M1043 47

⑲390 420

⑬71 87

⑪560 630

⑨48 51

⑰290 330

⑫520 590

⑯800 870

① ②

⑦

⑧

⑩

③

④

⑨

⑪

⑫

⑯

⑰

⑱

⑲ ⑳

M3

M8 M9 M10

⑬

⑭ ⑮

⑤

⑥

M1

MA

MS

21

22

海水調査点

30km

20km

福島第一

福島第二

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

3/23

3/30

4/6

4/13

4/20

4/27

5/4

5/11

5/18

5/25

6/1

6/8

6/15

6/22

6/29

7/6

7/13

7/27

①　福島第一　5，6号機放水口北側

放射

能濃

度（Bq/L） I-131

Cs-134

Cs-137

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

3/21

3/28

4/4

4/11

4/18

4/25

5/2

5/9

5/16

5/23

5/30

6/6

6/13

6/20

6/27

7/4

7/11

7/18

7/25

8/1

④　福島第二　岩沢海岸付近

放射

能濃

度（Bq/

L）

I-131

Cs-134

Cs-137

0

100

200

300

400

500

4/17

4/18

4/22

4/25

4/26

4/29

4/30

5/2

5/3

5/4

5/5

5/6

5/7

5/9

5/12

5/16

5/19

5/23

5/26

6/3

6/6

6/9

6/13

6/16

6/20

6/23

6/27

6/30

7/4

7/7

7/11

7/14

7/18

7/25

7/28

8/1

⑭　いわき市北部沖合3km

放射

能濃

度（Bq/

L）

I-131

Cs-134

Cs-137

⑫

・Seawater 22 points(May 5～), Marine soil 2 points (Apr.29～)　↓・Outside 30km radius, 7 points (succession from MEXT); within 30 km radius, at the lower layer additional 11 points; sampling frequency change (Jun.4～)・Expansion of marine soil sampling (2 points → 23 points, Jul.12～)

Offshore Fukushima marine soil survey results(Samples collected from Jul. 14 to Aug. 10, 2011)

Legend (Cs-137 dose)

① North of Discharge Channel of Units 5/6 of 1F

Rad

ioac

tivity

Den

sity

(Bq/

L)

④ Iwasawa Shore around 2F

Rad

ioac

tivity

Den

sity

(Bq/

L)

⑫ 3km offshore north Iwaki City

Rad

ioac

tivity

Den

sity

(Bq/

L)

－Seawater Sampling Points －(Fukushima Prefecture)

Sampling Points

＜Introduction of unmanned survey boat＞ Planning to sample and measure radiation dose of seawater and marine soil a few km offshore of the front of NPS (planned commencement: late Aug.)

1F

2F

2F

1F

２２


-Temporary DGs were moved to theupland (Apr. 15)-Securing redundancy of waterinjection line (by Apr. 15)-Setting fire engines in the upland (byApr. 18)

-Started installation of temporary tidebarrier on May 18 and completedon June 30


IV. Counterm

easures for aftershocks, etc.

(7) Tsunami, reinforcem

ent, etc.

CountermeasuresCountermeasure [69]Countermeasures againsttsunami

Countermeasure [70]Enhancement ofcountermeasures againsttsunami

仮設防潮堤設置予定範囲（イメージ）

仮設防潮堤設置状況（４）

O.P. ＋14m

仮設防潮堤設置状況（１）仮設防潮堤設置状況（２）

仮設防潮堤設置状況（３）

Planned temporary tide barrier(white dotted line, image)

Temporary tide barrier (4)

O.P. ＋14m

Temporary tide barrier (1) Temporary tide barrier (2)

Temporary tide barrier (3)

Cross-section of temporary tidebarrier (image)

Water proof sheetContainer filled withstones

Areas for temporarytide barriers (planned)

Seaside area(height: 4m)

Main building area(height: 10m)

23

Implementation Status Reference (Photos and Figures)Countermeasure [26]Installation ofsupporting structureunder the bottom ofspent fuel pool

- Soundness of structure was analyzedand evaluated

- Securing the route to the area toinstall supporting structure　(removing debris, assembling ascaffolding at hatch, removing shieldblocks)- Removing obstacles at the area andinstalling shielding- Completion of installing steel pillars(Jun. 20)- Completion of concrete placement(Jul. 26)- Completion of pouring grout(completion of work) (Jul. 30)

IV. Counterm



ent, etc.


Unit 4

Countermeasures

Steel pillar installation　　　　　 Concrete wall installation

Outline ofsupportingstructure

installation

Completion of steel pillarinstallation (Jun. 20)

Installation status ofreinforcing mesh

Installation of supporting structureunder the bottom of spent fuel pool

Installation of concreteshuttering

Completion of pouringgrout (Jul. 30)

Removing debris

Removing debris at truck-bay door

Securing route

Assembling a scaffolding at hatch

24


- Maintenance of equipment- Implementing water injection trainingby connecting slurry production facilityand concrete pumping vehicle"Elephant-3" (Jun. 16 and 17)- Making procedure documents andconfirming organizational structure(Jun. 30)


IV. Counterm



ent, etc.

Countermeasure [72]Preparation of variouscountermeasures forradiation shielding

<Utilization of Slurry>- Slurry production facility, transferpipe, concrete pumping vehicles havebeen installed (May 17)

Installation of equipment at Fukushima Daini Nuclear Power Station

Transfer pipe

Slurry production facilityOverview of the facility

Installation of slurry plantat Fukushima Daiichi

Preparation of equipment (sand)

"Elephant-3"

Placement of equipment at Fukushima Daiichi Nuclear Power Station

High pressure concretepumping vehicle

25

Implementation Status Reference (Photos and Figures)- Improvement of meals, upgrade oflodging facility- Securing water for daily use

- Expansion of temporary dormitory- Increasing available amount of waterfor daily use

(8) Living/working environm

ent

Countermeasure [75]Continuing andenhancement ofimprovement of workers'life/work environment

Progress Status Classified by Issues（Photos and Figures）

Issues CountermeasuresCountermeasure [74]Improvement of workers'like/work environment

V. Environment Im

provement

Drinking waterBunk bed (whole) Shower roomBunk bed

Outside (1)

Inside (1)

Full view

Inside (2) Inside (3)

Inside (4)Inside (5) Inside (6)

Dormitory

Fukushima Daini Gym

26

Implementation Status Reference (Photos and figures)

- Installation of rest stations at the site- Expansion of rest stations at the siteand restoration of original rest stations


ent


Countermeasure [74]Improvement workers'life/work environmentCountermeasure [75]Continuing andenhancement ofimprovement of workers'life/work environment

V. Environment Im

provement

協力企業（東芝）の休憩所

休憩所の外観

休憩所の内部

飲料水足洗い場

休憩所の外観（１）

休憩所の設置状況休憩所の外観（２）

Rest stations in front ofMain Anti-Earthquake

Building

Rest station installation status at Fukushima Daiichi

Date Place Space Spec RemarkApr.22

May10

May13

May28

May29

Jun.9

Jun.9

Jun.9

Jun.28

Jul.1

Jul.1

Jul.2

Jul.23

Jul.26

Aug.1

Aug.1

Aug.4

1st floor of service building of Unit 5/6

Rest station for Toshiba

Rest station in front of Main Anti-Earthquake building

Rest station in Company Center Training Building

Rest station in Company Center Welfare Building

Rest station of former Emergency Response measureRoom

Rest station for Operators of Water treatment facility

Rest station for Hitachi GE

2nd floor of service building of Unit5/6

Rest station near heliport

Rest station near Forest of wild birds

Rest station for the Unit1 reactor building cover

2nd floor of service building ofUnit1/2

Rest station at Main Entrance

Rest station at sludge facilityPrefab rest station for staff in charge of

coverage

Rest station for work space

260110606018012

120902020100606

704030

Jul.1~ as Medical room

Outside of a rest station (1)

Outside of a rest station (2)Status of rest stationconstruction

Rest station for staff engaged in reactor buildingcover

Foot-washstation

Drinking water

Outside of a rest station

Inside of a rest station

Rest station for Toshiba

２７

Implementation Status Reference (Photos and figures)


ent


Countermeasure [74]Improvement workers'life/work environmentCountermeasure [75]Continuing andenhancement ofimprovement of workers'life/work environment

V. Environment Im

provement

Rest station for Hitachi GE

Inside

Outside

Entrance Inside

Rest station near the heliport

内部（２）Inside (1) Drinking waterOutside of a rest station

Outside

Survey

Inside (2)

Rest station in front of Main Anti-Earthquake Building (term 2)

28

Implementation Status Reference (Photos and figures)- Improvement of protective equipmentProtective equipment appropriate towork environment is provided toworkers in order to secure safetyduring radiation related work.

(9) Radiation control / M

edical care


Countermeasure [77]Enhancement ofRadiation ControlCountermeasure [78]Continuing Enhancementof Radiation Control

V. Environment Im

provement

Special protective gear:Protective suit which can beexpected to shield beta ray andlow-energy gamma ray

Closed-circuit oxygen breathing apparatus:It can realize a long 120-minute usage, circulatingaspirated air with oxygen inside the cylinder.It is a suitable for usage in oxygen-less hazardousarea.

Half-faced mask:In case that radioactivitydensity is low and stable,workers put on half-facemasks, not full-face, (withgoggles), which enables tolighten the workload ofworkers.

Respiratory protective device with electric fan:The mask can blow in cleaned air which is filteredwith electric fan. Internal pressure is kept higherthan environmental pressure in order to reducethe risk of inhaling particulate. Also, it realizes tobreathe freely and lighten loss of bodily strength.

*Source: vendor catalogue




Hood mask;Keeping the inner pressure positive, the maskprevents influx of outer air. Continuous ventilationhelps exhausting the inner humidity and preventsheat injuries.


29


(9) Radiation C

ontrol/Medical C

are


Issues CountermeasuresCountermeasure [77]Enhancement of RadiationControlCountermeasure [78]Continuing Enhancementof Radiation Control

V． Environm

ent Improvem

ent

○Setting up Decontamination Place at J Village[Screening Control]Implementation of decontamination for persons who exceed the pre-setscreening value for protection of contamination diffusionChange of the screening value to unify with the related authorities andlocal governments （6,000cpm⇒100,000cpm）　*Setting up a self-standard value (13,000cpm)

[Decontamination Facility]As a result of radiation measurement at J Village, a decontaminationplace for workers and vehicles which exceed the screening value wasset up.　・Decontamination Shower for Workers： Borrowing and operating 2sets of Fire and Disaster Management Agency, and 1 set of JapaneseRed Cross Society　・Decontamination Place for Large-scale Vehicles：Operating sinceApr. 4　　　A simple decontamination place was used by Apr.3.　　　Waste water of decontamination is stocked in a storage tankthrough a treatment facility.　・Setting up a measurement place in a rainy day：Operation sinceJul.15.　・Setting up oil cleaning/cleanser decontamination place：Operation since Jul.31.

[Certificate of Contamination Survey]Since setting the No-go Zone, certificates of contamination surveyhave been issued at J Village, Fukushima Daini Nuclear PowerStation and Shin Fukushima Substation since May 7.

Decontamination Shower for Workers

J Village Center

Decontamination Place for Large-scale Vehicles


Decontamination Placefor Large-scale Vehicles

Decontamination Shower forworkers

油洗浄/洗剤除染場所雨天時計測設備

Measurement place for a rainyday

Oil cleaning/cleanserdecontamination place

Measurement place for a rainy day Oil cleaning/cleanserdecontamination place

30



Countermeasure [77]Enhancement of RadiationControlCountermeasure [78]Continuing Enhancementof Radiation Control

V． Environm

ent Improvem

ent

○Preparation of Measurement Infrastructure for Internal Radiation by Expansion of Whole Body Counter (WBC)

In order to implement evaluation of internal exposure for workers,etc., 13 WBCs are prepared with a building for WBC in J Village.

[Location]1. Hirono Football Stadium (next to the stadium building) 　　　　　（Training facility for rainy days）

　　　　 2. Metropolitan Area

[Number of Unit]1. 13 sets：1 set (in-vehicle type borrowed from JAEA ①), 12 sets (stationary type)*　　　　 2. 1 set：1 set (in-vehicle type borrowed from JAEA②)　* 4 sets transferred from 1F/2F, 7 sets newly purchased and 1 setborrowed from another company

[Operation Schedule][1. Hirono Football Stadium (next to the stadium building)]　-By Aug.17 (actual achievement)　　Under operation: 1 set (in-vehicle type borrowed from JAEA①),and 5 sets (stationary type)　-By the beginning of October　　Newly purchase of 6 sets (stationary type) and borrowing of 1 set (stationary type) borrowed from another company, and start operation[2. Metropolitan Area]　　Under operation: 1 set (in-vehicle type borrowed from JAEA)

Proper Treatment of Radioactive Waste[Liquid Waste (Decontamination Liquid Waste)]Decontamination liquid waste was collected in J Village and purifiedby a purification facilityThe purified liquid waste is planned to be used for decontaminationwater after confirmation of contamination density.* Installation and operation of the purification facility：Apr. 4-, Reuse：

Within August (planned)

[Solid Waste]Waste of protection cloths, etc. used in J Village and other screeningsites in Fukushima Prefecture, etc. are kept in J Village.The wastes were distinguished to combustible, fire-retardant and non-combustible type, and kept in special metal containers.

(9) Radiation C

ontrol/Medical C

are

７月25日から運用中

８月12日から運用中

８月 6日から運用中

10月上旬までに順次運用開始

他社借用⑬

⑫

⑪

⑩

⑨

⑧

新規購入

⑦

新規購入⑥

⑤

④ 1Fから据置型を移設

８月 5日から運用中③

2Fから据置型を移設７月13日から運用中②

車載型 JAEA借用７月11日から運用中①

ホールボディカウンタの運用開始時期

７月25日から運用中

８月12日から運用中

８月 6日から運用中

10月上旬までに順次運用開始

他社借用⑬

⑫

⑪

⑩

⑨

⑧

新規購入

⑦

新規購入⑥

⑤

④ 1Fから据置型を移設

８月 5日から運用中③

2Fから据置型を移設７月13日から運用中②

車載型 JAEA借用７月11日から運用中①

ホールボディカウンタの運用開始時期

①車載型WBC建屋②据置型WBC建屋

J Village Center Building

Hirono Football

①

②

⑥

⑫

⑦

⑧

⑨

⑩

⑪

⑬

J Village Center

PurificationFacility


Purification Facility Separation andStorage of Solid Waste

Operation Schedule of Whole Body Counters

Area of Separation andStorage of Solid Waste

Will be operated by theBeginning of October

Newly purchased

Borrowed from another company

Operation since Jul. 11


In-vehicle type borrowed from JAEA

Stationary type transferred from 2F

Newly purchased

Stationary typetransferred from 1F

Operation since Aug. 5




⑤

④

③

31



Countermeasure [77]Enhancement of radiationcontrolCountermeasure [78]Continuing enhancementof radiation control

(9) Radiation control / M

edical care

V. Environment Im

provement

- Reinforced radiation controlling　Pocket dosimeters had been lentthrough signing in a recording book ofentering the data manually intodatabase, but worker identificationcards with barcodes were providedsince Jun. 8 so that it becomespossible to enter the data directly intothe database with barcode readers. From Aug. 16, we are planning tointroduce a system which can outputradiation exposure data on receiptsand at the same time automaticallyacquire individual radiation exposuredata of workers. (Worker identification card system is inoperation and personal radiationexposure data have been automaticallyacquired at Main Anti-EarthquakeBuilding of Fukushima Daiichi, but notin operation at J-Village due to lack ofequipment.)

① Lending Alarm Pocket Dosimeter and signing in arecording book

- lending pocket dosimeter andsigning the names, time, etc. ina recording book to managepersonal in-and-out.

- Measurement with pocketdosimeter for each time

③ Entering measurement results in the book and PC

- Entering data of time, radiationexposure, etc. in the book or PCwhen leaving the area

Aftermath of the Earthquake (previously)

Measure personalradiation dose

Control workers in-and-out of the site

- Lending pocket dosimeter- Record　manual data entry (until Apr. 13) →Barcodes (from Apr. 14)

　Main Anti-Earthquake Building

Working Area

　J-Village

- Lending pocket dosimeter- Record: manual data entry→Barcodes (from Jun. 8)- Notification of radiationexposure data:→Receipts (from Aug. 16)

Measure personalradiation dose

Control workers in-and-out

After improvement (from June)

② Working, carrying pocket dosimeter and measuring

32


・Preventives against heat stroke　Cool vest　Mask with blower　Cool scarf


Issues CountermeasuresCountermeasure [79]Improvement of medicalsystemCountermeasure [80]Continuing improvementof medical system

We newly introduced mental supportfor workers, which is a system toimplement interviews, etc. once ortwice a month by specialists fromNational Defense Medical College, inJuly.In addition, based on the medicalexaminations implemented over"Workers engaged in emergency tasksfor more than one month" according tothe instruction by Fukushima LabourBureau, we implemented healthchecks targeting TEPCO employeesfor the first step from Aug.1 for 10days.The numbers of patients at theemergency medical treatment facilityin Unit 5/6, which opened on Jul. 1,was 26 in total (out of which thenumber of heat stroke was 12) as ofAug. 8. The number of patients wasrather small because of thoroughpreventive measures taken andadvanced notification about heatstroke. The facility was also utilized foremergency medical treatment forworkers who fell from power poles.

(9)Radiation control/m

edical care

V. Environment Im

provement

　Consultation room inMain Anti-Earthquake

Building

Cool vest Cool scarfMask with blower

Emergency medicaltreatment facility in

Unit5/6

Example :wearing Cool

scarf

Example :Ice pack for neck

Ice pack for neck*Source: vendor catalogue. Some are different from the real ones.

33



Issues CountermeasuresCountermeasure [85]Systematic stafftraining/personnelallocation

・ Conducting training for staffsengaged in radiation related work, whowill be in great demand.・ TEPCO has been conducting“radiation survey staff training” targetedfor employees and TEPCO groupcompanies’ employees and hasalready trained approx. 1,900personnel.・ The government has beenconducting “radiation survey staff” and“radiation protection staff” developmenttrainings and will train 250 personnel.・ According to affiliated companiesneeds, launched a new framework oflooking for specialized technicalworkers widely through Japan AtomicIndustrial Forum (JAIF).

(10) Staff training/personnel allocation

V. Environment Im

provement

Radiation survey staff training course (at J village)

Radiation protection staff training course (at JAEA)

Radiation survey staff training course (at training center, TEPCO)

34

progress status classified by issues (photos and figures

Documents