TBM Facility Requirements in ITER and Estimated Cost An initial - - PowerPoint PPT Presentation

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TBM Facility Requirements in ITER and Estimated Cost An initial - - PowerPoint PPT Presentation

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TBM Facility Requirements in ITER and Estimated Cost An initial assessment A special assignment: At the request from Dr. V. Chuyanov of ITER and approved by Dr. G. Nardella of OFES Clement Wong, General Atomics, USA Wong, General

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Special assignment, OFES, USA

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Clement Clement Wong, General Atomics, USA Wong, General Atomics, USA

US US-

  • ITER TBM Meeting, UCLA,

ITER TBM Meeting, UCLA, February February 14 14-

  • 15, 2007

15, 2007

TBM Facility Requirements in ITER and Estimated Cost

‘An initial assessment’

A special assignment: At the request from Dr. V. Chuyanov of ITER and approved by Dr. G. Nardella of OFES

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Special assignment, OFES, USA

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ITER, Cadarache, ITER, Cadarache, January January 26, 2007 26, 2007

Clement Clement Wong, General Atomics, USA Wong, General Atomics, USA

Valery Chuyanov, Chang Shuk Kim, Valery Chuyanov, Chang Shuk Kim, Alessandro Alessandro Tesini Tesini, Markus Iseli, Kimihiro Ioki, , Markus Iseli, Kimihiro Ioki, Manfred Manfred Glugla Glugla, Jerry , Jerry Sovka Sovka, ITER , ITER Otto Bede, KFKI Otto Bede, KFKI-

  • RMKI,

RMKI, Hungary Hungary

TBM Facility Requirements in ITER and Estimated Cost

‘A very preliminary assessment’

With updates for the Feb 14, 2007 presentation at UCLA

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Outline Outline

  • Introduction
  • Four TBM and ITER interface areas
  • 1. Port cell
  • 2. Hot cell
  • 3. TCWS Vault
  • 4. Tritium plant
  • Cost Estimate

List of items

  • Recommendations
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Test of Tritium Breeding Blankets in ITER Test of Tritium Breeding Blankets in ITER

Tritium Breeding Blankets (BB) are not present in ITER but are necessary in DEMO.

The two main functions of BB are: i) to convert neutron & gamma energy in heat and collect it by mean of an high grade coolant to reach high conversion efficiency (>30%) ii) to produce and recover all Tritium required as fuel for D-T reactors Tritium breeding self-sufficiency BB are complex components submitted to very severe working conditions

ITER is an unique opportunity to tests BB mock-ups in a tokamak environment prior

the construction of the DEMO Test Blanket Modules (TBMs)

It is an ITER mission : “ITER should test tritium breeding module concepts that would lead in a future reactor to tritium self-sufficiency, the extraction of high grade heat and electricity production.”

(ITER SWG Report to the IC) TBMs have to be representative of a DEMO breeding blanket, capable of ensuring tritium-breeding self-sufficiency using high-grade coolants for electricity production

The ITER TBM Program is therefore a central element in the plans of all seven ITER

Parties for the development of tritium breeding and power extraction technology.

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TBMs TBMs Arrangement in ITER and Interfaces AREAS Arrangement in ITER and Interfaces AREAS

Additional resources required for adaptation of present ITER building and preparation of ITER/TBM systems interfaces and for accepting/ running TBM systems tests in ITER common cost to be determined by ITER and to be shared by all Parties willing to participate to the TBM program (need of agreement on cost sharing, procedures, coordination by ITER?, others…)

By Luciano Giancarli, chair of TBWG At the kick-off meeting of the AHG/TBM July 10, 2006

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The TBMs first wall is recessed of 50 mm and protected with a 2 mm Be layer

Shield plug Frame TBM Location

TBM TBMs tests need a whole TBM system

TBMs Arrangement in ITER and Interfaces Areas TBMs Arrangement in ITER and Interfaces Areas

TBM ports

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TBMs TBMs Design Proposals by ITER Parties for Design Proposals by ITER Parties for day day-

  • one
  • ne

List of presented TBM Design Proposals for day-one (DDDs also available) Helium-cooled Lithium-Lead TBM (1 design, F/MS struct.) Dual-coolant (He+Lithium-Lead) TBM (2 designs, F/MS struct.) He-cooled Ceramic Breeder/Be multiplier TBM (4 designs, F/MS struct.) Water-cooled Ceramic Breeder/Be multiplier TBM (1 design, F/MS struct.) He-cooled Liquid Lithium TBM (1 design, F/MS struct.) Self-cooled Liquid Lithium TBM (1 design, V-alloy struct.) Selection of the coolant connections at each of the 3 ITER test ports based on the TBM proposals System type Test Port nb. 16 Test Port nb. 18 Test Port nb. 2 He-coolant 2 lines 2 lines 3 lines H2O-coolant

  • 1 line
  • ITER heat

rejection system available available available He purge gas 4 lines 4 lines 4 lines ITER component cooling system 1 line 1 line 1 line

12 3 4 5 8 6 7

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Four Interface Areas Four Interface Areas

Ancillary Equipment

  • 1. Port Cell
  • 2. Hot Cell
  • 3. TCWS Vault

EU HCPB helium system

TBM Port Plug

Cooling lines

  • 4. Tritium Plant

Port plug cask

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  • 1. Port Cell Area: replacement of TBM
  • 1. Port Cell Area: replacement of TBM

TBM Removal from the machine:

Step 1: Disconnect port plug and ancillary equipment and move the ancillary equipment unit (AEU) to its maintenance area (yet to be defined). Step 2: Bring in the transfer cask, extract the port plug to the transfer cask and move them to hot cell area. Step 3: Move and insert the port plug into the hot cell “red zone” area. Step 4: Maintain or replace the TBM and maintain or refurbish the AEU in its maintenance area.

TBM Return to the machine:

Step 5: Test the TBM and AEU with the testing utilities. Step 6: Disconnect utilities, insert the port plug to the transfer cask and return them to the port cell. Step 7: Insert port plug, move the transfer cask away, move in the AEU and reconnect TBM (port plug) with the AEU.

AEU TBM transfer cask

Cutting and re-welding of PbLi pipes on the AEU will be done in a temporary tent

Hot cell area

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TBM Maintenance: After D TBM Maintenance: After D-

  • T plasma before TBM exchange

T plasma before TBM exchange

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  • 2. Hot Cell Area
  • 2. Hot Cell Area

Utilities: e.g. AC/DC, water, high pressure helium, diagnostics…etc., for the testing of TBM and ancillary equipment

Needs additional

  • Hot cell “red zone” windows and services
  • RH equipment
  • Hot cell area for ancillary equipment maintenance
  • Utilities for TBM and ancillary equipment tests

Could be parked and maintained here with Increased area (TBD)

AEU

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Tokamak Bldg, E-W Section Equatorial Port Level Section View TBM HTS in TCWS Vault

Level 0.0 Level 18.06 Port Cell Area TCWS Area TBM Cooling system Equipment Room TBM Ports #2, 18, 16

  • 3. TCWS Vault Area
  • 3. TCWS Vault Area

Original space

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  • 3. TCWS Vault Area,
  • 3. TCWS Vault Area, con

con’ ’t t

Needs high pressure Helium (8MPa) and water (15.5 MPa) lines from port cell to TCWS and 4 more coolant system areas

EU HCPB helium system

  • B. Possible solution: build from ground up as attachment
  • r use a separate building
  • A. From Dr. Ezato

This approach may not be acceptable due to building code seismic requirements and interference with the assembly hall

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  • 4. Tritium Interface Area
  • 4. Tritium Interface Area

Tritium interface schematic

Two sources of tritium: 1. From the breeder and its corresponding purge stream and/or extraction stream.

  • 2. From the tritium that got permeated and

contaminating the main coolant stream. Observations:

  • The maximum pulse tritium generation rate is

very small (~2.09 10-6 gm/s) it may be reasonable to assume that the bred tritium could be collected locally by the use of suitable gettering units or traps, which can then be delivered to the tritium plant for analysis.

  • ITER tritium group is ready to support the TBM program

more detailed specification on coolant purification system (CPS) and tritium extraction system (TES) and accountancy requirements is needed.

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Items included in the cost consideration Items included in the cost consideration

Port cell area and lines to TCWS

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Items included in the cost consideration Items included in the cost consideration

Hot Cell Area

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Items included in the cost consideration Items included in the cost consideration

Other tools and TCWS Vault Area

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Recommendations Recommendations

  • Prepare a summary report on this very preliminary assessment
  • Use the 3 frames, shields and dummy TBM case,

since additional equipment can always be purchased later.

  • This cost assessment needs to be performed again in detail
  • Are some of the items already in ITER cost?

Don’t want to double count.

  • Initiate and complete work in the following areas:

Port Cell: Components design, TBM exchange and maintenance, procedure…etc. TCWS: Detail TBM cooling system location, design and cooling lines design. Hot Cell: AEU parking and maintenance (TBD), TBM RH equipment Tritium Plant: Further specifications from parties and re-assess needs.