Civil Nuclear Export Showcase 2014
Market Briefings & Seminars

Organization Outline & Present Activities
of
International...
IRID is a Research & Development Consortium
Basic role is:

Fully committing to technology R&D that helps the
decommission...
Overall Relationship
Electric Utilities &
Plant Manufacturers

Council for the Decommissioning of Fukushima Daiichi NPS
(C...
IRID as “Open Platform” for Collaboration
Board of Directors

Integrated management of
R&D projects
Alliance/
collaborativ...
Overview of Fukushima Daiichi Units 1-4

 The state of progress for decommissioning varies with each unit.

Unit1: Hydrog...
Outline of Mid and Long Term Roadmap
 Mid and long term roadmap was revised in June 2013.
 Phased approach was confirmed...
Planned Schedule for Unit 1-4
 Removal of fuel at Unit 4 was started from November 2013 (one month earlier than the initi...
Steps for Fuel Debris Retrieval
on the premise of the Existing Flooding Method
 The most reliable method of fuel debris r...
Building Internal Decontamination
DS pit

SFP
Equipment
hatch

RPV

Fuel debris

PCV

airlock

Torus

Steam dryer
Steam-wa...
Open air Robot for Inspection and Repair of PCV
Device
① Survey robot of
Vent
pipe joint
② Quadruped walking robot
( &Flat...
Submersible Robot
Develops device
Robot for ④ Submersible
robot
surveying
submersed ⑤ Floor walking
torus walls
robot
⑥ Ro...
Investigation of the PCV Interior
 Inserting survey equipment through Unit 1 X-100B
✓ A crawler device that can transform...
Steps for Fuel Debris Retrieval
on the premise of the Existing Flooding Method
 The most reliable method of fuel debris r...
Request for Information (RFI) of
Innovative Approach for Fuel Debris Retrieval

Background of RFI:

To ensure multi-fold a...
Topics for RFI
Topic-A: Internal PCV/RPV Status Investigation
✓A-1: Conceptual study on innovative approaches
✓A-2: Techno...
Program Structure
MAR/APR, 2014

PHASE 1
Theme
A-1
RFI for C/S
B-1
Theme RFI for F/S
A-2
B-2

MAR/APR, 2015

PHASE 2
RFP f...
Thank you for your attention

無断複製・転載禁止 技術研究組合 国際廃炉研究開発機構
©International Research Institute for Nuclear Decommissioning
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Market Briefing. Japan part 2. 28th January

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Market Briefing. Japan part 2. 28th January

  1. 1. Civil Nuclear Export Showcase 2014 Market Briefings & Seminars Organization Outline & Present Activities of International Research Institute for Nuclear Decommissioning (IRID) Kiyoshi OIKAWA Director, IRID 無断複製・転載禁止 技術研究組合 国際廃炉研究開発機構 ©International Research Institute for Nuclear Decommissioning
  2. 2. IRID is a Research & Development Consortium Basic role is: Fully committing to technology R&D that helps the decommissioning project of Fukushima Daiichi NPS as an urgent subject, based on which enhancing the technological basis for nuclear decommissioning for the future. Contents of operation are: ✓R&D for nuclear decommissioning ✓Promoting the international/domestic alliance for decommissioning ✓Human resource development for R&D Establishment: August 1, 2013 2 ©International Research Institute for Nuclear Decommissioning
  3. 3. Overall Relationship Electric Utilities & Plant Manufacturers Council for the Decommissioning of Fukushima Daiichi NPS (Chaired by the Minister of METI) Implementation of Mid-and-long-term Roadmap Outputs/Outcomes of R&D program Expertise for future decommissioning projects IRID Management Functions TEPCO Headquarters F1 Site Operation Integrated management of R&D projects Project Group A Project Group B Project Group C R&D project A-1 R&D project B-1 R&D project C-1 R&D project A-2 R&D project B-2 R&D project C-2 Contractors & Sub-contractors Advice from international community 3 Joint study/research with partners ©International Research Institute for Nuclear Decommissioning
  4. 4. IRID as “Open Platform” for Collaboration Board of Directors Integrated management of R&D projects Alliance/ collaborative study Technological vendors Research institutes, etc. ✓Planning of overall research strategy ✓Coordination & optimization Needs at site/ Supply of equipment Collaborative study Project -A Project -B International Advisors Advices from organizational governance & management aspects Joint Research/ International Collaboration Joint business Sharing results Technological advices ✓Discussion on innovative ideas, technologies and projects Innovative ideas/ OECD/NEA - Accident analysis - Others IAEA - Review mission - Others International Expert Group technology proposals Business and research institutions all over the world 4 ©International Research Institute for Nuclear Decommissioning
  5. 5. Overview of Fukushima Daiichi Units 1-4  The state of progress for decommissioning varies with each unit. Unit1: Hydrogen explosion. Cover was installed. *Most of the fuel has fallen down into the PCV. Unit2: *Fuel debris exist the core part, lower plenum and PCV. Unit3: Hydrogen explosion. *Fuel debris exist the core part, lower plenum and PCV. Unit4: Hydrogen explosion. Cover for fuel removal was installed. Started fuel removal at 18 Nov. 2013. *Fuel debris location is estimated location. Unit 1 Covering Structure Spent Fuel Pool Reactor Building Primary (SFP) Containment Water Vessel (PCV) Reactor Pressure Injection Vessel (RPV) Fuel Debris Vent Contaminated Water Unit 2 Unit 4 Unit 3 Blow-out Panel (now closed) gantry Water Injection Crawler Crane Covering Structure Finished removing rubbles on the building Started removing fuels Water Injection 5 ©International Research Institute for Nuclear Decommissioning
  6. 6. Outline of Mid and Long Term Roadmap  Mid and long term roadmap was revised in June 2013.  Phased approach was confirmed.  The roadmap has shifted into the Phase-2, by having started fuel removal from Unit 4 SFP. 1st half of 2020 30 to 40 years in 2011 2013 (fast case) December November the future Step 1 Step 2 Phase 1 Phase 2 Phase 3 Period up to the   Period up to the Cold shutdown commencement of the Period up to the completion of achieved commencement of the removal of the fuel decommissioning •Achieve cold shutdown retrieval of the fuel debris from the spent fuel measures (within 10 years) •Significantly reduce pool (30 to 40 years in the radiation releases future) (within 2 years) Started first fuel removal from Unit 4 SFP on Nov. 18, 2013 6 ©International Research Institute for Nuclear Decommissioning
  7. 7. Planned Schedule for Unit 1-4  Removal of fuel at Unit 4 was started from November 2013 (one month earlier than the initial plan).  Retrieval of fuel debris will be started from the first half of FY 2020 (the earliest case). Unit 1 Nuclear Fuel removal from SFPs (target schedule) First half of FY2017(the earliest case) ~ Second half of FY2017 Unit 2 Second half of FY2017(the earliest case) ~ First half of FY2023 Unit 3 First half of 2015 Unit 4 November 2013 Fuel debris retrieval (target schedule) First half of FY2020 ~ Second half of FY2022 First half of FY2020 ~ Second half of FY2024 Second half of FY2021(the earliest case) ~ First half of FY2023 ー (one month earlier than the initial plan) 7 ©International Research Institute for Nuclear Decommissioning
  8. 8. Steps for Fuel Debris Retrieval on the premise of the Existing Flooding Method  The most reliable method of fuel debris retrieval at present is considered to remove the fuel debris by keeping them covered with water to reduce the risk of radiation exposure during the work process. HP :Technical holding points Phase 1 2012 Phase 2 Phase 3 By 1st half in 2020 2013 Step 1: Reactor Building Decontamination Leaking Location (Lower PCV) HP Identified Step 2: Enough Leaking Location achieved Identified HP Water Level HP (Upper PCV) Step 5: PCV Investigation from outside PCV Internal Inspection and Sampling Step 3: Lower PCV Repair Step 4: PCV Half Flooding Step 6: Upper PCV Repair 8 Enough After 20-25 years Defueling HP Water Level HP Method achieved Developed Step 8: RPV Internal Inspection and Sampling ▽Open RPV Step 7: PCV/RPV Full Flooding Step 9: Defueling Debris processing/ disposal methods HP developed ©International Research Institute for Nuclear Decommissioning
  9. 9. Building Internal Decontamination DS pit SFP Equipment hatch RPV Fuel debris PCV airlock Torus Steam dryer Steam-water separator Turbine Building  Development of remotely operated decontamination devices that meet the contamination conditions in the field in order to improve the work environment such as surveying and repairing leaks in the PCV to prepare for fuel debris retrieval. Waterproofing Leak High-pressure water jet decontamination device Dry ice blast decontamination device 9 Blasting/collecting decontamination device ©International Research Institute for Nuclear Decommissioning
  10. 10. Open air Robot for Inspection and Repair of PCV Device ① Survey robot of Vent pipe joint ② Quadruped walking robot ( &Flat vehicle ) ③ Robot for surveying the upper part of the S/C Characteristics Approach joints between bent pipes and the D/W from between the vent pipe and concrete wall with adhering itself to the surface of the outside of the vent pipe Be used to ascertain conditions inside the S/C, such as the presence of leaks from near the area beneath the vent pipe. Check for leaks from structures at the top of the S/C, which is high up (Approx. 3m at its highest), after accessing it from the catwalk outside the Torus. ① Survey robot of Vent pipe joint PCV ③ Robot for surveying the upper part of the S/C Close-up camera (with platform) Extendable mast PCV Vent pipe ベント管 Robot ロボット adhesion location 吸着位置 ② Quadruped walking robot Quadruped walking robot Vent pipe sleeves Sand cushion drain lines PCV Ven t 1 pipe 3 S/C 2 500 mm 900 ~ 3000 mm crawlers Torus survey 4 Flat vehicle Bellows cover Approx. 約 6 10 5 Survey robot ©International Research Institute for Nuclear Decommissioning
  11. 11. Submersible Robot Develops device Robot for ④ Submersible robot surveying submersed ⑤ Floor walking torus walls robot ⑥ Robots for surveying the bottom part of the S/C ⑥ Robots for Surveying the bottom part of the S/C Characteristics Be used to check for damages at building penetration seals with remotely operated (used in very narrow places) by an operator viewing a video screen. Walk on the floor underneath the water and uses ultrasound to check for leaks in distant places. Check for damages on the outside of the S/C, on structures on the outside and on penetration pipes, with adhering itself to the outer surface of the S/C ④ Submersible robot to Movable camera Ascent/descent thrusters (front, back, left, right) Magnetic Observation camera wheels S/C Inner circumference of S/C Seismic resistant support m Exa ve tra bot f ro ute o o r ple ロボット l Up down Column support Outer circumference of S/C Camera PCV Ven t pip e 1 3 S/C ⑤ Floor walking robot Vertical thrusters Horizontal Thrusters 2 4 6 11 Forward thrusters Horizontal thrusters 5 Taurus walls S/C Tracer Ultrasound Taurus Walls Ultrasonic sensor (sonar) Crawlers Camera S/C Robot Robot ©International Research Institute for Nuclear Decommissioning
  12. 12. Investigation of the PCV Interior  Inserting survey equipment through Unit 1 X-100B ✓ A crawler device that can transform and move along gratings stably after being inserted into the PCV from narrow access pipe (X-100B penetration seal: inner diameterφ100mm). [PCV cross-section] X-100B Existing Guide pipe [D/W 1FL] D/W 1F Grating A enlarged view X-100B Existing guide pipe Cable Guide pipe When traveling along guide pipe Dosimeter CCD camera Thermometer Running device A section PCV Grating D/W subfloors Transformation X-6 : Survey route ( proposed ) High radiation level PCV internal survey route (proposed) 12 When traveling on grating Device concept image ©International Research Institute for Nuclear Decommissioning
  13. 13. Steps for Fuel Debris Retrieval on the premise of the Existing Flooding Method  The most reliable method of fuel debris retrieval at present is considered to remove the fuel debris by keeping them covered with water to reduce the risk of radiation exposure during the work process. HP :Technical holding points Phase 1 2012 Phase 2 Phase 3 By 1st half in 2020 2013 Step 1: Reactor Building Decontamination Leaking Location (Lower PCV) HP Identified Step 2: Enough Leaking Location achieved Identified HP Water Level HP (Upper PCV) Step 5: PCV Investigation from outside PCV Internal Inspection and Sampling Step 3: Lower PCV Repair Step 4: PCV Half Flooding Step 6: Upper PCV Repair 13 Enough HP Water Level achieved After 20-25 years Defueling HP Method Developed Step 8: RPV Internal Inspection and Sampling ▽Open RPV Step 7: PCV/RPV Full Flooding Step 9: Defueling Debris processing/ disposal methods HP developed ©International Research Institute for Nuclear Decommissioning
  14. 14. Request for Information (RFI) of Innovative Approach for Fuel Debris Retrieval Background of RFI: To ensure multi-fold approach, as well as to enable technological breakthroughs, collective knowledge and experience via interactive platform is to be pursued. This will also benefit enhancement of safety and decommissioning of nuclear Schedule: facilities all over the world. 2013 ✓November 29 : Website is open ✓Mid December : Procedure for RFI is to be announced 2014 ✓End of January : Deadline of RFI ✓Feb/March : Review of responses 14 ✓ ©International Research Institute for Nuclear Decommissioning
  15. 15. Topics for RFI Topic-A: Internal PCV/RPV Status Investigation ✓A-1: Conceptual study on innovative approaches ✓A-2: Technologies for internal PCV/RPV status investigation Topic-B: Fuel-Debris Retrieval from PCV/RPV ✓B-1: Conceptual study on Innovative approaches [Example] Conceptual idea of retrieving fuel debris from PCV and RPV without submerging PCV, the comparison to the submersion scenario, etc. (a) Accessing and removal of fuel debris from Top side of PCV/RPV under water. (b) Accessing and removal of fuel debris from Top side of PCV/RPV in atmospheric condition. (c) Accessing and removal of fuel debris from lateral side of PCV/RPV in atmospheric condition. Innovative approach (d) Accessing and removal of fuel debris from bottom side of PCV/RPV in atmospheric condition. ✓B-2: Technologies for Fuel-Debris Retrieval 15 ©International Research Institute for Nuclear Decommissioning
  16. 16. Program Structure MAR/APR, 2014 PHASE 1 Theme A-1 RFI for C/S B-1 Theme RFI for F/S A-2 B-2 MAR/APR, 2015 PHASE 2 RFP for C/S Selection RFP for F/S Selection PHASE 3 RFP F/S Funding R&D project RFP Funding Selection Selection (3 to 5 projects) (3 to 5 projects) if not selected C/S or R&D No Funding Others R&D project Funding C/S Funding Project Workshop #1 (potential) (potential) Preliminary/Design Funding Selection RFP (potential) R&D project Funding Selection (potential) Project Workshop #2 RFP Visit IRID WEB for more information! http://www.irid.or.jp http://www.irid.or.jp/fd (for RFI) 16 ©International Research Institute for Nuclear Decommissioning
  17. 17. Thank you for your attention 無断複製・転載禁止 技術研究組合 国際廃炉研究開発機構 ©International Research Institute for Nuclear Decommissioning

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