Current status of Fukushima Daiichi NPS

Efforts for Decommissioning and Contaminated Water Management

Agency for Natural Resources and Energy, METIMarch, 2018

Mid- and Long- term Roadmap –Framework (provisional translation)-Mid-and-Long-Term RoadmapThe government has formulated “Mid-and-Long-Term Roadmap towards the Decommissioning of TEPCO’s Fukushima Daiichi Nuclear Power Station” and is engaged in process control measures for decommissioning.

It has been revised three times so far. Continuous review will be carried out based on the situation of the site in the future and the results of research and development.

Major Milestones of the Mid- and Long-Term RoadmapContaminated water management

Suppress contaminated water generation to about 150 m 3 / day. Within 2020Storage of all water generated by treatmentof highly contaminated water in welded-joint

tanksFY 2018

Stagnant water treatment

①Separation of connection between Units 1 and 2 and between Units 3 and 4

Within 2018

②Reduction of radioactive materials in stagnant water in the buildings by one-tenth of the 2014 year-end.

FY 2018

③Completion of treatment of stagnant water in buildings Within 2020

Removal of spent fuels

①Start of spent fuel removal at Unit 1 FY 2023 (an outlook) ②Start of spent fuel removal at Unit 2 FY 2023 (an outlook) ③Start of spent fuel removal at Unit 3 Mid FY2018

Retrieval of fuel debris

①Decision on the method for fuel debris retrieval from the 1st implementing Unit

FY 2019

②Start of fuel debris retrieval from the 1st implementing Unit Within 2021

Solid Radioactive waste

Establishment of a technical perspective on measures of treatment / disposal and on safety.

Around FY2021

Key event

Investigation using Robots

Unit1 Unit3Unit2

Key numbers

95%

Key numbers

0.01

0.1

1

10

100

1000

10000

100000

1000000

I-131Cs-134Cs-137

(Bq/L)

WHO’s guideline level for drinking water quality

Under 0.7Bq/LGeneration of contaminated water500 m3/day

200 m3/day

Mar. 2011 Now

Unit 4

Unit 3

Mar. 2011 Now

Robot into Unit 2 (30 Jan. 2017)

7

調査用パイプ（先端にカメラ）

ロボット経路

Guide pipeRobot’s route Scaffold fallen

Camera into Unit 2 (19 Jan. 2018)

Direction: the access opening for workers

Pebbly deposits(Estimated as fuel debris)

CRD housing support

A dosimeter＆

A camera in water

Robot into Unit 1(18-22 Mar. 2017)

Robot into Unit 3 (19-22 Jul. 2017)Inside the pedestal

難透水層

汲み上げ

揚水井下部透水層

難透水層 地下水ドレン

海水面

⑧海側遮水壁⑤陸側遮水壁 ⑤陸側遮水壁

ウェルポイント

Waterproof pavement

Pump up

Well point

Upper Permeable layer

Low-Permeable layer

Sub-drainSub-drain

Groundwater bypass

Groundwater level

Land-side impermeable frozen walls

Land-side impermeable frozen walls

Sea-side impermeable

walls

Sea level

Pump upPump up

Pump up

Turbine bldg.

Reactor bldg.Ground

solidification by sodium

silicate

Groundwater drain

(Source: TEPCO’s website)

Contaminated Water Management

Tank Treated and used for cooling

Treated and stored in tanks

24

Flow ofgroundwater

3 1

Bird’s-eye view

13

N

Contaminated Water Management

Impermeable Wall

Pump up

Pump up

Pump up

原子炉建屋

P.+35m

タービン建屋

Reactor Bldg.

Frozen-soil WallsSeaMountains Cross-section

Impermeable Wall

Frozen-soil Walls

Layersof earth

Pump up

Groundwater bypass Sub-drain Sub-drain

Groundwater-drain

▲

： 地下水ドレン

地下水の流れ

15

Maintenance operation range

The temperature of the temperature measuring tube at a position 85 cm away from the frozen line

Freezing condition of the entire frozen wall (as of 9 February 2017)

Frozen soil wall (Sea-side)

Frozen soil wall (Sea-side)

Groundwater flow

Sea-side impermeable wall

Temperature(degree)

0

10

20

30

40

50

0

200

400

600

800

1000Rainfall at FD

Generation of Contaminated water

Approx. 500

Approx. 200

Gen

erat

ion

of C

onta

min

ated

wat

erStatus of generation of contaminated water

16

Rainfall at FD

m3/day

Operation of the groundwater bypassstarted.

Operation of the sub-drains started.Closure of the seaside impermeable wall

Operation of the groundwater drains started.

Closure of the frozen wall on the land side started.

Closure of the frozen wall on the seaside.

Generation of contaminated water

Before

Waterproof Pavement

After

Status of seawater monitoring around outside of the port

18

0.01

0.1

1

10

100

1000

10000

100000

1000000Seawater around the south Discharge Channel

I-131Cs-134Cs-137

(Bq/L)

WHO’s guideline level for Drinking water quality Cs134,Cs137:10Bq/L

0.01

0.1

1

10

100

1000

10000

100000

1000000Seawater at north side of Discharge Channel of Unit 5,6

I-131Cs-134Cs-137

(Bq/L)

WHO’s guideline level for Drinking water quality Cs134,Cs137:10Bq/L

Status of seawater

＜ Changes in rest areas ＞

＜Large rest house＞

From May 2015

Just after the accident

Working Conditions

Mid-and-Long-Term Roadmap

June, 2015 Revision of third edition

June, 2011 Adapted

September, 2017 Revision of fourth edition

• Many countermeasures have progressed.ex) Robot investigation inside the PCVs

• The policy for fuel debris retrieval has been decided based on NDF’s technical strategic plan.

(1)Fuel debris retrieval• Step by step approach

(2) Spent fuel removal from pools• Proceed carefully with work

(3) Contaminated water management • Reduction of generation volume of contaminated

water

(4) Solid Waste management• Storage of solid waste with volume reduction under

the safety conditions

(5) Communication• Reinforce interactive communication

Mid-and-Long-Term RoadmapKey points

(Provisional translation)

Points of Revision fourth edition

The current framework is maintained.

Mid-and-Long-Term Roadmap

Releasing information from Gov.

MonthlyPress Briefing

To local media

Monthly Information

To Fukushima Pre. And 13 local municipalities

ReleaseInformation To Industries

MonthlyPress Briefing

To media

Release Information through;• Japanese Embassies

and ministerial-level conversations,

• Embassies in Tokyo,• Press Conference,• Briefing, Tour, etc.

Provision of updates to IAEA

Portal site of the status of Decommissioning and Contaminated water Management management in METI-WEB

Films in Japanese

Brochures in Japanese

A Film in English

Brochures in English

Local National Overseas

Fukushima Advisory Board on Decommissioning and Contaminated Water Management

Members Main TopicsChair：State Minister of METIMembers :• Deputy Governor of

Fukushima Prefecture,Mayors of 13 local municipalities around site

• Chamber of commerce, Agricultural cooperative, Fishery association, NPO

• TEPCO,• METI, Nuclear Regulation

Authority, etc.

The 12th Meeting in Mar. 2017:Discussion around members related to best efforts such as contents of information transmission (decommissioning and contaminated water management) Films, Brochures International Forum

The 1st Meeting in Feb. 2014:Explanation of current status (Main issues: Contaminated water Management) from TEPCO & Gov.

Fukushima Today-For a Bright Future-（English）

Fukushima Today 2017 Spring（Japanese)

Fukushima Today（English）

Friends of Japan – Fukushima –(English)

Release: Sep. 2016Runtime: 5 min.Subtitle: English, Chinese, Korean

Release: Mar. 2017Runtime: 17 min.*for the domestic audience

Release: Jan. 2017Runtime: 90 sec.*Aired on JAL, ANA international flights, in hotels, airports etc.

Release: Jun. 2017Runtime: 13 min.*Mainly off-site

“Important Stories on Decommissioning” Brochure

Film and Brochure

Film (Digest)

Cooperation with International Communities

27

International Organizations

BSAF Project(Benchmark Study of the Accident at theFukushima Daiichi NPS)

PreADES(Preparatory Study for Analysis of Fuel Debris)

EGFWMD Meeting(The Expert Group on Fukushima WasteManagement and Decommissioning R&D)

Bilateral Frameworks

U.S.-Japan Bilateral Commission on Civil Nuclear Cooperation- Decommissioning and Environmental Management Working Group- Civil Nuclear Energy R&D Working Group

UK-Japan Nuclear Dialogue- Decommissioning Working Group

Japan-France Nuclear Committee

Peer Review Missions (April, 2013 - ) Expert Visits Expert Meetings Comprehensive information on the website

(December, 2013 - ) “The Fukushima Daiichi Accident” (September,

2015) (Reported by the Director General) Side Event in the General Conference (2015 - )

Japan-Russia Nuclear EnergyWorking Group

Cooperation with International Communities

The Import restrictions on fishery products from JapanAs of May 2011 As of January 2018

10,11 April 2016 in Iwaki-cityMain speakers:

The 1st Forum

W. D. Magwood IVDirector General, OECD/NEA

J. C. LentijoDeputy Director General, IAEA

M. WeightmanFormer Chief Executive, ONR

2,3 July 2017 in Hirono-town and Iwaki-cityFacilitator / Main Speakers

The 2nd Forum

W. D. Magwood IVDirector General, OECD/NEA

J. C. LentijoDeputy Director General, IAEA

H. KainumaAssociate Professor, RITS Univ.

29

International Forum on the Decommissioning of the Fukushima Daiichi Nuclear Power Station

5,6 August 2018 in Naraha-town and Iwaki-city

The 3rd Forum

Dialogue between local representatives and METI, NDF, TEPCO, IAEA, OECD/NEA, etc.

At the 2nd Forum…

Simultaneous graphic recording of the discussion