Total Structure of R&D 14 Projects

NARAHA Remote TechnologyDevelopment Center（Mock-Up Test Facility）

Spent FuelManagement
2-②-1 Development ofTechnology for Water
Confinement of PCV

1 Evaluation of LongTerm Reliability of
Spent Fuel

2-① Development ofRemote Decontamination
Machine2-②-2 Real Scale MockUp Test for Water
Confinement of PCV

Water Confinementof PCV
2-④-1 Development ofRetrieval Technology for Fuel
Debris and In-Core Structures

Decontamination
inside R/B
2-③-1 Investigation
inside PCV

2-③-2 Investigation
inside RPV

2-③-3 Analysis of Reactor
inside Condition throughSever Accident CodeRetrieval ofFuel Debris<Direct>

2-④-3 Evaluation of
Structural Reliability of
PCV/RPV
2-④-4 Development of
Criticality Control
Technology for Fuel Debris

Investigation and Analysis
inside Reactor

2-③-4 Detection of
Fuel Debris insideReactor

1-1-①

2-④-2 Design and Developmentof Collecting, Transfer andStorage of Fuel Debris< Indirect >2-③-5 Development ofTechnology for Identifying
Properties of Fuel Debris
OKUMA Analysis and Research Center（Radioactive Material Analysis and Research Facility）

Radioactive
WasteManagement
3 Treatment andDisposal ofRadioactive Waste

1-1-②

Revision of theMid-and-Long-Term Roadmap
June 25, 2015
Contaminated Water and Decommissioning Issues TeamCabinet OfficeMain point of revision of the Mid-and-Long-Term Roadmap
1. Give priority to risk reduction
Fast progressContaminated water management,
Fuel retrieval

Risk reduction

Give priority sequence to actions in order tocertainly reduce risks in a long-term, notonly to concentrate on speedup

Deal with as soon as possible
Deal with safely, surely and carefully with careful
preparation

Fuel debris retrieval
Solid radioactive wastes, Secondary waste
generated from contaminated water treatment

2. Clarifying milestones

Deal with in a long-termClarifying goals for the next few years, taking local
demands into account

3. Construct stronger confidential relationship with the locals through drastic disclosure, etc.
Establishment of Fukushima Council(February, 2014)

Further enhanced communication(International Forum on Strategy for the Decommissioning of F1, etc.)

4. Further reduction in workers’ exposure dose,
Enhancement of Organization for Industrial Safety and Health Management
5. Reinforcement of Nuclear Damage Compensation and Decommissioning Facilitation
Corporation (NDF), the Control tower of technical strategy for decommissioning
Foundation of NDF (August, 2014)

Total management of R&D,Consentrating wisdom from all over the world１

Clarification of Milestones
 Clarify the nearest target (green) for highly prior measures, while adhering the general framework (blue)

Overall

Completion of decommissioning

In 30 – 40 years

Contaminated watermanagement

Completion of treatment of stagnant
water in buildings

Removing

Additional effective dose rate at the site boundary < 1 mSv/y

Reducing the amount of increase ofcontaminated water and water inside thebuilding, except cooling water, to almost 0
Achieving the risk reduction
goal of exposure doseStart of preparation to decide the long-term management of ALPS-treated water

Suppression of inflow rates into buildings < 100 m3/day

Preventing leakage

Storage of all water generated by treatment of highly
contaminated water in welded-joint tanks

Stagnant water
treatment

Reduction of radioactive materials in stagnant water inbuildings by half

Retrieval of spent
fuel

Decision on methods for the treatment and storage

FY 2015
first half of FY2016

Huge decrease incontaminatedwater amount

Isolatingby 2020

Huge reduction in riskof leakage from tank
Reduction in risk ofleakage from buildings

FY 2016NEWIn early FY 2016
FY 2018

around 2020

Start of spent fuel retrieval at Unit-1

Later half of FY2017

FY 2020

Start of spent fuel retrieval at Unit-2

First half of FY 2020

FY 2020

Start of spent fuel removal at Unit-3

First half of FY 2015

FY 2017※The changes in milestones are mainly due to “Measures for Safety and Security”, including measures for preventing dust dispersion orreduction of workers’ exposure dose, etc. The schedule delay due to “troubles” or “delay in decision” should not be happen he reafter.

Methods for debris retrieval from every Unit

In around 2 years

Retrieval of fueldebris

Decision of the method for debris retrieval from the 1st implementing UnitFirst half of FY2018

Start of debris retrieval from the 1st implementing Unit

In 2021

Radioactive waste

Conclusion of basic policy for waste disposal

FY2017

２

The Overview of Fuel Debris Retrieval Operations

Submerged Top-access ApproachIn-air Top-access Approach

機密性○1-1-③In-air Side-access Approach

Source: Nuclear Damage Compensation and Decommissioning Facilitation
Corporation, “Technical Strategic Plan 2015 for Decommissioning of the Fukushima
Daiichi Nuclear Power Station of Tokyo Electric Power Company ‐ Towards
Amendment of the Mid-and-Long-Term Roadmap in 2015“ （April 30, 2015）

The Timeline of the Subsidized Project(Project of Development of Fundamental Technologies forRetrieval of Fuel Debris and Internal Structures)

機密性○The Timeline of the Subsidized Project(Project of Upgrading Approach and System for Retrieval ofFuel Debris and Internal Structures)

機密性○