Current Status of Solid Breeder TBM in China
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Current Status of Solid Breeder TBM in China. Presented by: Kaiming Feng (On behalf of Chinese HCCB TBM Team). Co-Institutes: 1). China Academy of Engineering Physics (CAEP), Mianyang, P.R. China 2). Chinese Institute of Atomic Energy (CIAE) , Beijing, 100084, P.R. China.

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Current Status of Solid Breeder TBM in China

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Current status of solid breeder tbm in china

Current Status of Solid Breeder TBM in China

Presented by: Kaiming Feng

(On behalf of Chinese HCCB TBM Team)

Co-Institutes:

1). China Academy of Engineering Physics (CAEP), Mianyang, P.R. China

2). Chinese Institute of Atomic Energy (CIAE) , Beijing, 100084, P.R. China.

3). Chinese Institute of Nuclear Power(CINP), Chengdu 610043, P.R. China

4). Shanghai Ceramic Institute, Chinese Academy of Science (SCICAS), P.R. China

Presented at CBBI-16 meeting

Sep. 8 -10, 2011, Red Lion on the River , Portland, OR, USA


Current status of solid breeder tbm in china

OUTLINE

1. Introduction

2. Progress on Updated Design

3. Progress on Relevant R&D

4. Test Plan and Cooperation

5. Summary


1 introduction

1. Introduction

  • ITER is an unique opportunity to test tritium breeding blanket mock-ups in an integrated tokamak operating conditions;

  • Helium-cooled ceramicbreeder (HCCB) test blanket module will be the primary optionof the Chinese ITER TBM program;

  • China has the position of Port Master (PM) in port number 2 and is leading the HCCB concept as the TBM Leader (TL). CN HCCB TBM will be tested at different phases of ITER operation;

  • In order to reduce the effects of magnetic field ripple, the TBM design was updated with reduced RAFM mass;

  • Related R&D on key components, materials, fabrication and mock-up test have being implemented in China.


Current status of solid breeder tbm in china

Roadmap to DEMO

  • It was assumed that DEMO is a next step after ITER.

  • DEMO will demonstrate the integration technology, materials, economics, safety, and environment for the fusion energy applications.

  • TBM testing on ITER is an important approach toward to DEMO.

CTF? FNST?

ITER -TBM

Power Plant

EAST

DEMO

ITER

IFMIF

HL-2A

Fusion Breeder?

2010

2020

2035

2050


Hcsb demo blanket concept

HCSB-DEMO Blanket Concept

  • As one options of breeding blanket with the Helium-cooled solid breeders/RAFM steel (HCSB-DEMO) will be chosen as China’s DEMO blanket concepts.

  • HCCB TBM will demonstrate the functions required for Chinese HCSB-DEMO blanket under at ITER operation condition.

3-D View of HCSB DEMO blanket

  • .K.M.Feng, et.al., J. Fusion Eng.& Desgn, 84(2009)2109-2113.

HC-SB DEMO Blanket


Tbm concepts and port sharing

TBM Concepts and Port-Sharing

Six TBM Systems to be installed in ITER in different operation phases

PM : Port Master, TL : TBM Leader

HCLL : Helium-cooled Lithium Lead HCPB : He-cooled Pebble Beds (Ceramic/Beryllium)

WCCB : Water-cooled Ceramic Breeder (+Beryllium) HCCB : He-cooled Ceramic Breeder (+Beryllium)

LLCB : Lithium-Lead Ceramic Breeder (LiPb & He, Dual-Coolant type)

CN HCCB TBM

CN HCCB TBM will demonstrate the functions required

for Chinese DEMO blanket in ITER condition

ITER cross-section

Relationship of ITER,TBM and DEMO

HCSB-DEMO


Current status of solid breeder tbm in china

2. Progress on CN HCCB TBM Design

  • A series of the Chinese HCCB TBM design have been carried-out since 2004 within the space limitation and technical requirements specified by ITER.


Outline of hccb tbm design

Outline of HCCB TBM Design

  • Originally design of CN HCCB TBM have been completed before 2009.

Basic design characteristics:

- TBM structure: Sub-module arrangement

- Structure material: RAFM (CLF-1);

- Tritium breeder: Li4SiO4 pebble bed, 80%Li-6 ;

- Neutron multiplier: Be pebbles bed;

- Coolant and purge gas: Helium gas

- Coolant pressure: 8MPa

- Coolant temperature: 300 OC(inlet) -500 OC (outlet)

- Tritium production ratio (TPR): 0.0505g/d

Cross-section of SB

Integration View of CN HCSB TBM

Assembly scheme of Sub-Modules


Current status of solid breeder tbm in china

Updated Design of HCCB TBM for Reduction RAFM Mass

  • Objectives of updated design:

  • - to simplify Sub-module structure;

  • - toreduce RAFM mass;

  • - to improve TPR performance;

  • Results shown:

- The RAFM mass is reduced from 2.3t to 1.6t).

- TPR is increased by factor from 0.051g/day to 0.0798g/day.

Cross-section of SM

HCCB TBM Module

TBM Sub-module arrangement

  • Main modification

  • Reduce radial dimension of the FW and sub-modules.

  • Bypass is introduced to TBM design to control the difference of flow-rates .

  • - Arrangement of pebble beds in the sub-module is changed from the former transverse direction to the current vertical direction.

  • An optimized all RAFM design with reduced mass of 1.3t is on going.

  • A updated DDD report will be completed soon.

Exploded view of sub-module


Current status of solid breeder tbm in china

Performance Analyses for Updated TBM Design

Tmax= 517 OC

Tmax= 548 OC

Tmax= 621 OC

b) Be pebble bed

c) Li4SiO4 pebble bed

d)Sub-module

a) RAFM material

Temperature Distribution of Sub-module

  • Main calculation results

Temperature and stress distribution of FW

  • Main parameters meet design requirement.

  • TPR is obviously increased.


Current status of solid breeder tbm in china

Performance Analyses for Updated TBM Design

Thermal analysis

thermal analysis model

Primary stress

Secondary stress

Thermal analysis results of sub-module

Stress analysis


Cn hccb tbm auxiliary sub system design

CN HCCB TBM Auxiliary Sub-system Design


Current status of solid breeder tbm in china

Design Parameters for the HCCB TBM


Current status of solid breeder tbm in china

CN TBS Integration with ITER (Con’t)

2 half-ports

C5

CN-HCCB

C6

IN-LLCB

View of Pipe Forest and TBM-Sets in Port #2


Current status of solid breeder tbm in china

CN TBS Integration with ITER

Tokamak Coolant Water System vault

India part

Port Cell area

Port Cell

(AEU)

Interspace

(Pipe forest)

Port 2#

(Port Plug)

L2 of Tritium building for TES

China part

  • Space reserved for CN TBS has been identified.

  • Arrangements of CN TBS have been considered.

  • Investigation of components which selected for CN TBS has been done.

  • Strategy for Pipe Forest maintenance has been coordinated with IO people.

Interface 3

Interface 1

Interface 2a

Interface 2b

Space Arrangement Identification of CN TBS

Space arrangement


Current status of solid breeder tbm in china

3. Progress on R&D:Structural Materials-CLF-1

  • Two RAFM alloys are being developed in China; CLF and CLAM

  • A 500kg and 1-ton ingots of CLF-1 steel were recently produced byvacuum induction melting and electro-slag remelting method.

  • The optimization of the melting technique forthe larger ingots to is underway.

Consumable electrode furnace

Remelting facility

1-ton Ingot of CLF-1

Tensile strength of CLF-1

DBTT of CLF-1

500kg Ingot of CLF-1


3 progress on r d ceramic breeder pebbles

3. Progress on R&D:Ceramic Breeder Pebbles

  • Two kinds of ceramic breeders (Li4SiO4, Li2TiO3) for TBM are being developed at different institutions in China;

  • Lithium orthosilicate (Li4SiO4 ) pebbles will be the primary option in the CN HCCB TBM.

  • Ceramic breeder (Li4SiO4) pebbles fabricated by melt spraying method have good sphericity, and high density.

  • Ceramic breeder (Li4SiO4) pebbles prepared by Freeze-sintering process have good mechanical properties (the average crush load is 50N) ;

  • Li2TiO3Pebbles have good surface feature by using sol-gel method.

XRD pattern of Li4SiO4 pebbles

Li4SiO4 Pebbles (D=1mm)

by metl spraying method @SWIP

Li4SiO4 Pebbles (D=1mm)

by freeze-sintering method @CAEP

Main properties (Li4SiO4) by melt spraying method

Li4SiO4 Pebbles (D=1mm) by

extrusion–sintering method @CIAE

Li2TiO3 Pebbles (D=1mm)@CAEP


3 progress on r d fabrication of be pebbles

3. Progress on R&D:Fabrication of Be Pebbles

Main chemical composition of Chinese Be 1#

  • Be metal of high performance was developed in China .

  • Be pebbles have been produced by Rotating Electrode Process (REP) method in China. Related performance tests are on going.

  • A new project to develop higher quality Be pebbles in China is being implemented for the ITER project.

Chemical Composition of Be pebble

Be Pebbles (D=1mm)

Sample of Be Pebbles(D=1mm)

Micrographs of Be Pebbles (D=1mm)

REP Facility at HBSM Co.


Current status of solid breeder tbm in china

3. Progress on R&D: Helium Coolant Test Loop

  • The construction of a small He Test Loop to validate circulator technology will be completed soon.

  • - The He test loop has two impellers. It uses aerostatic bearings to avoid oil lubricating.

Main parameters of circulator design

Flow diagram of small He loop

3-D view of circulator

Impeller of circulator

  • A prototyped Helium Test Loop to validate TBM components and design is also to be built in SWIP. The circulator will use magnetic bearings. The flow rate will up to 1.3kg/s.

Layout of He Loop

Cross-section view

Flow diagram of He Loop


Fabrication of key components of he test loop

Fabrication of Key Components of He Test Loop


3 progress on r d fabrication process of u shaped fw

3. Progress on R&D:Fabrication Process of U-Shaped FW

  • A small-sized mock-up (1:3) of U-shaped first wall is completed;

  • Two kinds of fabrication method of U-shaped FW have been considered;


3 progress on r d fabrication of small sized mock up

3. Progress on R&D:Fabrication of Small Sized Mock-up

  • A full-sized mock-up with 2X2 sub-modules arrangement using the RAFM steel (CLF-1) as structure material will be completed in this year.


4 tbs r d and delivery plan

4. TBS R&D and Delivery Plan

High flux test reactor

  • 3. EM-TBM will be installed in ITER port after the first plasma shutdown (2019)

1. CN HCCB TBS qualification activities

  • Helium experimental loop (1:3) construction (2010.01-2011.06)

  • Conceptual design of CN HCCB TBM(2010.01-2012.12)

  • CN TBM testing and update design (2011.06-2013.12)

  • Preliminary design of CN HCCB TBM (2013.01-2013.12)

  • Prototype helium loop construction (2012.01-2014.06)

  • Large scale TBM mock-up tests (2014.06-2015.12)

  • Final design of CN HCCB TBM (2014.01-2015.12)

    2. CN HCCB TBS delivery activities.

  • Main TBS components fabrication (2016.01-2017.06)

    • Final TBS design in ITER.

    • Main TBS components fabrication.

    • TBS function tests (domestic).

  • CN TBS delivery (2016.12-2017.06)

  • CN TBS acceptance tests in ITER site (2017.06-2017.12)

  • EM TBM delivery (2018.01-2018.06)

  • EM-TBM System acceptance tests(2018.06-2019.06)


Current status of solid breeder tbm in china

Domestic and Intl. Cooperation

  • A lot of domestic units are joined into CN HCCB TBM program, including universities, institutes and industry company

CN HCCB TBM

Safe & QA Team

Design Team

R&D Team

SWIP CAEP

CIAE ASIPP

XJTU NCEPU

NCIRD IMPCAS

NPIC TUINET

SICCAS SJTU

SWIP CAEP

CIAE SJTU

ASIPP NCEPU

XJTU IMPCAS

NPIC TUINET

SICCAS HBSMC

SWIP CAEP

CIAE NCEPU

ASIPP TUINET

NPIC TUINET

NCIRD SICCAS

CAEP:China Academy of Engineering Physics; CIAE: China Institute of Atomic Energy;

SJTU: Shanghai Jiao Tong University; ASIPP: Institute of Plasma Physics; Academy of Sciences ;

NCEPU: North China Electric Power University; NECB: Nuclear Engineer Corporation , Beijing

NPIC: Nuclear Power Institute, China; IMPCAS: Institute of Modern Physics, Chinese Academy of Sciences;

TUINET: Tsinghua University, Institute of Nuclear Energy Technology; XJTU: Xi’an Jiao Tong University;

SICCAS: Shanghai Institute of Ceramics, Chinese Academy of Sciences ; HBSMC: Haibao special metal materials Co.


Current status of solid breeder tbm in china

Domestic and Intl. Cooperation

Intl. Cooperation and Partnership

  • CN HCCB TBM will be operated and tested on ITER through international cooperation under the frame of partnership with ITER parties.

  • China is interested in other TBM concepts as a partner in HCPB-TBM, WCCB-TBM and LiPb-based TBMs.

  • China HCCB TBM is open to cooperation with other ITER parties. Some informal discussions, for instance, CN-EU,CN-JA, CN-KO, has been started.

  • CN-US bilateral cooperation meeting on TBM program will held on Nov.7-9, 2011.


5 summary

5. Summary

  • HCSB TBM with the Solid Breeder/Helium coolant/ RAFM material is the primary option of the Chinese TBM program.

  • Updated design, current progress on R&D, test and delivery plan up to the installation in ITER (2019) are presented.

  • Relevant R&D on key techniques for the HCSB TBM concept are supported by the Chinese ITER- DA domestic agency (2009-2012) , including:

    • TBM optimization design and validation of key technologies;

    • Fabrication of Li4SiO4 pebbles and Be pebbles to large-scaled level;

    • Fabrication of structure material RAFM to ton level;

    • Construction of High Heat Flux Test Facility (Power:400kW);

    • Construction of small-scale and prototyped Helium Test Loop.

  • Testing HCSB TBM on ITER will be implemented with the cooperation of domestic and international institutions and industries.


Current status of solid breeder tbm in china

Thanks for your Attention !


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