1st International Forum on the Decommissioningof the Fukushima Daiichi Nuclear Power StationFukushima Daiichi
Nuclear Power Station :Current Status and OutreachApril 10, 2016
Naohiro MASUDA @ Spa Resort Hawaiians
Chief Decommissioning Officer,
President of Fukushima Daiichi Decontamination andDecommissioning Engineering Company,
Tokyo Electric Power Company Holdings, Inc.

１．Current Status of Fukushima Daiichi NPS

(1) State of Units 1~4
All Units Continue To Be In Cold Shutdown※ Cooling water injection
Building cover

Fuel removal cover

Blowout panel (closed)

PrimaryContainmentvessel

Fuel removal completed構台Reactor building (R/B)

ｸﾛｰﾗｸﾚｰﾝ 1535 /1535

Spent fuel pool(SFP)

Dec. 22, 2014

福島第一
安全第一
福島第一
福島第一安全第一 安全第一(PCV)

392体

※

615体

※

Reactorpressurevessel(RPV)
Fueldebris
Ventpipe566体

注水

安全第一 福島第一
安全第一

福島第一

Torus
Suppression chamber(S/C)

Unit 2

Unit 1

Unit 3

Unit 4

Values as of 5:00 on 1st March 2016
RPV bottomtemp.

RPV bottom
temp.

Fuel pool temp.

Water injection to
the reactor

Unit 1

~１５℃

~１５℃

１５．２℃

４.５㎥ / hUnit 2

~２０℃

~２１℃

２５．１℃

４.４㎥ / hUnit 3~１８℃~１８℃

２２．４℃

４.６㎥ / hUnit 4

No fuel, so
monitoring not
required

No fuel, so
monitoring not
required

１１．３℃－Plant parameters including RPV and PCV temperatures are monitored continuously 24 hours/day.
©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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(2) Current status and tasks of Units 1–4
Immediately after the earthquake
CurrentstatusTasks

Unit1

Building cover installed (October 2011)
Removal of building cover toward removal of fuel fromspent fuel pool
Identification of debris status on operating floor andinside pools. Countermeasures for dispersion ofradioactive materials during building cover removal.

Now

Blowout panel
Currentstatus

Blowout panel closed
Very high radiation level in the building

Tasks

Radiation dose reduction measures

Currentstatus

Debris removal from top of the reactor
building completed (October 2013)
Installation of fuel removal cover and fuelhandling facility planned

Tasks

Radiation dose reduction measureswith remote-controlled heavy machinery

Unit
2

Unit
3

Cover and fuel handling facility for Unit3 poolImage

Current status

Unit
4

Assembling roof parts
Undergoing training atOnahama Port

Fuel removal from SFP completed(commenced November 18, 2013,completed December 22, 2014)
Cantilever structure installed©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

Removal of SF assemblies4(3) Location of sampling and monitoring points
Installation of dose-rate monitors

Location of sampling points, dust monitors and monitoring posts

 System visualizing real time dose data in place.

Dust monitors on the operating floor

Dust Monitors

Monitoring Post

Sampling points in the sea area

 Data display monitors (86 points) placed whereworkers can easily access. Continuous dust
monitoring data also shown on display.

NUnit 1 Unit 2

MP-1

MP-8

Unit 3 Unit 4

MP-7

MP-2
MP-3

MP-4
MP-5

MP-6

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

5(4) Airborne Radiation Level
Release Rate Of Radioactive Materials Significantly Decreased
 Amount of radioactive materials (cesium) released from Unit 1-3 PCVs is assessed based on airborne
radioactive material concentrations at top of reactor buildings→ Estimated value of total release amount (as of Feb 2016) about 220 thousand Bq/hr→ Accordingly, assessed the exposure dose at site boundary as maximum 0.00068 mSv/yr(Excluding effect of already released radioactive materials)→ About one-4500th compared to Jul 2011 (1 billion Bq/hr)
Exposure dose by radioactive materials (cesium) from Units 1 to 4

1.7mSv/yAbout one-3500th compared
to exposure to naturalradiation dose in a year

0.00068mSv/y©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

6

（５） Sea Area Monitoring
Radioactive Material Concentration In Sea Area Decreased By 1/1,000,000 After The Accident
North of Units 5&6 Discharge OutletFront of Shallow Draft Quay

Feb 2016

Mar 2011

Mar 2011

Feb 2016
Concentration level of radioactive materials in the vicinity ofcooling water intake after Sep 2015
Steel sheet-pilesof seaside wall
installed(beforeconnection)

Concentration Limit Specified by the Rule・Cesium 137: 90Bq/L
・Cesium 134: 60Bq/L

Seaside wallconstructedFeb2016
Feb2016

Sep 2015

Near South Discharge Outlet (about 1.3 km south of outlet)

Seaside impermeable wallMar 2011©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

Feb 2016
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（６） Decreasing Site Radiation Dose
Decreasing radiation dose atFukushima Daiichi
Performance
Area comparison withFY2015 target

FY2013

FY2014As of Dec 2015

FY2015 target

40 ％

77 ％

89 ％

100 ％

: Area confirmed below targetedradiation dose（5μSv/h）（confirmed on chest orat ground surface）

Personal protective
equipment in each zone
R zone［ Area with anorak and full face mask ］
Y zone［ Area with coverall ］
G zone［ Area with general work unifrom］
Full-facerespirator

ACG

BDE

Half-face
Respirator

FGreen zone
equipment
Changing equipment house into R zone
Changing equipment house into Y zoneExisting rest station

DS2 Mask©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（７）Worker Security and Improved Work Environment
 Efforts being made to secure personnel over long term while managing amount of worker radiation exposure.
 Further efforts made for continuous improvement of work environment while understanding worker needs.
Changes in number of workers

Improving work environment

 Number of workers per weekday (TEPCO employees and contractors)

 New buildings at Fukushima Daiichi

engaged in work during March assumed as approximately 6,390 people.

 Percentage of locally born workers approximately 50% in Jan.
8000

6890 7130
58006440 6600
6570
5730
5490
6220
4840

5000
4000
3000
2000
1000

6900 6690 6830
6430 6720
6940
6800 6740 6670
6450 6370

 Large rest house with a capacity of approx. 1,200workers (from May 2015)→Convenience store “Lawson” opened on
March 1, 2016
 New office building close to the field (from 2014)

402042704450
3730
3410
3290
30603130 3130
3540
3220
2990
2950

 Fukushima Revitalization Meal Service Center

４月
５月
６月
７月
８月
９月
１０月
１１月
１２月
１月
２月
３月
４月
５月
６月
７月
８月
９月
１０月
１１月
１２月
１月
２月
３月
４月
５月
６月
７月
８月
９月
１０月
１１月
１２月
１月
２月

7000
6000

7450

Large rest house Providing warm meals to Fukushima Daiichi
 Creation of employment opportunities
 Dispelling harmful rumors about Fukushima(from March 2015)0

2013年度

2014年度

2015年度Change in the average number of workers (actual value) per weekday in the months
following 2013.

Ensuring stable long-term employment

Trend of monthly exposure dose rate

 Importance of arranging a long-term work environment for contractors
confirmed to steadily move forward with 4 decades ofdecommissioning work.

 Currently, approximately 90% of orders fulfilled by negotiated contracts.
 By securing long term workers, more deliberate personnel assignmentand human resource development is possible.

food35Workers of TEPCO
Workers of Contractors

30
25
20

Dec 2015

15
10

Average 0.47mSv（Provisional value）

50Mar-11

Sep-11Mar-12©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

Sep-12Mar-13

Sep-13Mar-14

Sep-14Mar-15

Sep-159

（８） Comparing “Before And After” Clean Up Work
Restoration of revetment at shallow draft quayBefore work

Removal of tsunami debris

Before work

After work

After work

Installation of land-side (frozen soil) impermeable wall

Before work

Removal of scattered debris on top of Unit 3

Before work

After work

After work

Draining the ditches to preventing from rainwater inflow

Before work

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

After work10（９）Illustration of Roadmap Toward Decommissioning
Roadmap Target (formulated Dec 2011, revised Jun 2013 and Jun 2015)

Stabilization
efforts

Phase 1

＜Cold shutdown achieved＞
・Cold shutdown
・Significantly reduceradiation release

Phase 2

Period to commencementof fuel removal from the spent
fuel pool (within 2 years)

Spent fuel removal plan (Units 1, 2, and 3)
FY
年度

2015

2016

cover demolition
Unit 1 Building
1号機
建屋カバー解体等

2017

Unit 3
3号機

Challenge

2020

Cover
installation
カバー設置等

2021

2022

Spent
fuel removal
燃料取り出しPreparation
準備工事

Container
installation
コンテナ設置等Plan
プラン①

Building

カバー設置等
coverinstallation

Plan
プラン②

Coverinstallation
カバー設置等

Spent fuel
燃料取り出しremovalSpent fuel

燃料取り出しremovalopen airUpsideSide

Frame for Unit 1 pool
Waterproof andEarthquake proof

2019

Rubble removal
ガレキ撤去等

Rubble removal
ガレキ撤去等

RemovalChannel2018

Upper building demolition
建屋上部解体・改造等
Unit 22号機

submerged

Period to completion ofDecommissioning measures(30 to 40 years in the future)※Fuel debris (Fuel, cladding and other material that melted and hardened again)

Fuel debris removal (Units 1, 2, and 3)

Fuel Debris

Phase 3

Period to commencementof fuel debris removal(within 10 years)

Started at #4 unit on Nov18, 2013.

In terms of reducing radiation exposure during the work process,the most reliable method of fuel debris removal is to remove thefuel debris while submerged. But depending on the results of future
investigations, we may adopt a substitute method such as taking
fuel debris without filling the primary containment vessel with water.

30～40 years later

Dec. 2013

Dec. 2011

Cover for Unit 3 pool

Equipment for Unit 2

Shielding radiation and radioactive dust

Construction method for fuel debris removal (image)To facilitate the removal of fuel assemblies and debris in the Unit 2 spent fuel pool, we decided
to dismantle the whole rooftop above the highest floor of the Reactor Building.

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

11２．Intensifying efforts for dialogue with local residents

（１）Information Sharing and Communication
In accordance with agreements, TEPCO reports to local governments about the progressof decommissioning. TEPCO also informs them of any accidents or problems at the site.
TEPCO reviewed data analysis result reporting results to ensure easy access of the latest
data of radioactive dose.
More visualized information and videos available to enhance understanding ofdecommissioning work.
Website layout (http://www.tepco.co.jp/nu/fukushima-np/index-j.html）reviewed to facilitate
specific topic search.

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（２） K drainage information disclosure (media coverage)
Feb. 25, 2015 Fukushima Minpo

Feb. 26, 2015 Fukushima Minpo

Feb. 25, 2015
Fukushima Minyu©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（２） K Drainage Information Disclosure (Cause and Measure) In February 2015, Tepco’s report on the outcome of radiation analysis to the NRA including
detection of large concentration, Tepco was highly criticized for inappropriate disclosure.
 After 3rd party examination and verification, the following two points were indicated as themain cause of inappropriate disclosure① Cultural issue : Spirit of information disclosure was not widely spread internally② Systematic problem : Past information disclosure policy not actually implemented

Taking these seriously, Fukushima D&D Engineering company intensified the following: Management level of engineers sit in press conference to understand the public relations
activities. Risk Communicators sit in important meetings to heighten sensitivity toward
information disclosure.
 Establishing mechanism of managing what the company promises and reflecting intodaily operation
 All radiation data should be publicly available with creation of appropriate reporting
system and responsibility identified.
©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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(2) K drainage information disclosure (new policy and intensification of dialogue)
March 30, 2015 announcement “New efforts and company’s management for informationdisclosure” introduced the following measures.

１．New mechanism on information disclosure
PlanAchievement① Disclosure of all data on radiation at FukushimaDaiichi② Data available on the web③ Periodic monitoring and evaluation by third party

Data disclosure started from April 2015

• 70,000 radiation data samples on the web• Introducing the mechanism of reviewing disclosure process• Topics on data variation explained at press conference

２．Structural change
PlanAchievement• Strengthen capacity of Risk Communicators (RCs)• Increased number of RCs at Fukushima Daiichi• Strengthen capacity of RC proposals to D&D Engineering company

３．Intensifying dialogue with local stakeholders
PlanAchievement① Establishing new platform to exchange views withlocal residents② Intensifying efforts to visit local residents• Preparing to establish new platform• Fivefold increase of local resident visits (communities) compared topreviously• Continue to strengthen efforts to have direct dialogue with residents in 12towns or villages where evacuation directive is applicable.

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（３） Intensifying Communication Before Unit 1 Building Cover Removal

 In removing the Unit 1 building cover, local government expressed
concerns over possible contaminated dust dispersion as rice exceeding
legal radiation level was found in Minami-Souma.

 In order to respond seriously, Tepco, which originally planned to beginbuilding cover removal in summer 2014, repeatedly explained
countermeasures against dust dispersion and exchanged ideas with local
governments including Fukushima Prefecture.

Sep 11, 2012

Additional measures taken as a resultStrengthen countermeasures against dust dispersion

Strengthen dust monitoring including additional dust monitorsStrengthen notification system to local governments



Evaluate effectiveness of proposed measures by temporarily removing
two roof panels from Oct to Dec 2014

Provide information on daily work, values at monitoring posts, and live
camera data on website.

Nov 10, 20114

Roof panel removal began afterward in July 2015

Live camera data
©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（4） New information tools (Visualizing decommissioning tasks)
Video footage or 3D/CG used to enhance public understanding of decommissioning work, especially topics of high socialinterest. Materials are provided through various channels including website and press conferences.

Example of 3D Graphic

Example of Video (Tank replacement)

Example of Video (Reconstruction)

New information channels

 Website Twitter Facebook YouTube Meetings
 Press conferences, etc.

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（５） Information to Residents （1/2： Opportunities for Site Visit）
Information by Site Visit
 Offering opportunities to local governments and communities, the number of visitors from Fukushima
Prefecture is increasing, increasing from 20% to 30% in FY 2014.
 Tepco strives to offer more opportunities to meet local community requests.
Visitor Trend【FY 2014】
Overseas Fukushima Pref.

１５％

２２％

Other Japanese

６４％

Total：4,727

Visitor Feedback【FY 2015】※

 Understand the progress of decommission work

 Decommissioning is cutting edge & large scale
project

Overseas Fukushima Pref.

１５％

28％

 Field site with the latest R&D including robot
technology etc.

Other Japanese

５５％Total：6,723

The number of total visitors after the accident
exceeds 17,000.

Site visit by Kazurao-mura community leaders©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（５） Information to residents （2/2：Direct dialogue with residents and meetings）

 Direct communication with local residents byvisiting provisional housing and public relations
magazines.
 Information through various channels such as local
governments, community leaders, and businesses.

 Meeting local residents to explain decommissioning
work especially topics of social interest.
 Building mutual confidence by answering community
questions in person.

Example : Meeting with Hirono residents
on Dec 2 2015

Examples Tepco employees visit provisional housing toexplain progress.

 Communication activities including patrol ofcommunities in Naraha Town, Kawamata Town,
Katsurao Village and Minamisoma City.

① Participants：29② Topics

Removing Unit 1 building coverTraining facilities for removing the building
cover in Hirono town

 Leaflet on decommissioning work provided withpublic relations paper by local governments.

 Strengthen efforts to provide site visit
opportunities.

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（6） International Communication Activities At IAEA General Conference in Sep 2015, Japanese government and companies prepared panels in cooperation. Tepco also used panels and leaflets to explain the status of decommission work.
 Intensifying efforts targeting Asian countries, particularly Korea and Taiwan, to mitigate reputational
damage and actively proposing site visit/interviews.
Media Coverage in Asia
YONHAP News Korea： September 14
Objectively covered start of subdrain

China Television Company（CTV）： Aired on Nov 7 2015 「60 min」

Reported current status ofFukushima Daiichi as normal
construction site though previously
like a war zone

 China Business News （Shanghai）：On Nov 5 2015
Reported current status of Fukushima Daiichi and various measures learned
from the Fukushima accident implemented at Kashiwazaki-Kariwa NPS

Infographic flyer

 Singapore Press Holdings （Singapore）：On Nov 25 2015

©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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（７） Communication with on-site workers (website launch) October 2015: “1 FOR ALL JAPAN,” launch of website specifically designed for on-site workers
and their families
 Monthly paper “Ichiefu (1F)” simultaneously issued and delivered at Fukushima Daiichi NPS andJ-village.

Simple layout, large font size andaccessible from smart phones©Tokyo Electric Power Company Holdings, Inc. All Rights Reserved.

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Thank you for your kind attention!!