Page 1 2013, ITER Organization PURESAFE Final Conference, CERN
Geneva (CH), 19-23 January 2015 Page 1 2013, ITER Organization
Maintenance & Remote Handling at ITER Presented by A.Tesini
ITER Organization Route de Vinon sur Verdon 13115 St Paul Lez
Durance France Disclaimer: The views and opinions expressed herein
do not necessarily reflect those of the ITER Organization
Slide 2
Page 2 2013, ITER Organization Page 2 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Contents ITER
maintenance basics ITER maintenance Regulatory Context Why Remote
Handling ITER Baseline Remote Handling Equipment
Slide 3
Page 3 2013, ITER Organization Page 3 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 The ITER Project
The ITER Machine
Slide 4
Page 4 2013, ITER Organization Page 4 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Magnet System
ITER Vacuum Vessel and Ports System ITER Shield Blanket System
Slide 5
Page 5 2013, ITER Organization Page 5 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Site Layout
Concept Phase ITER Site Construction Phase (2013)
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Page 6 2013, ITER Organization Page 6 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 2015
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Page 7 2013, ITER Organization Page 7 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 I ITER MAINTENANCE
FACT & FIGURES 180 hectars ITER site surface in St Paul les
Durance, South of France 2.5 million m3 of earth moved for the
excavation 100,000 km of Niobium 3 Tin superconducting strands for
toroidal field magnets 23,000 tons total mass 840 m3 plasma volume
360 tons each toroidal field coil 5000 people at peak construction
time 104 km of road transport for large components (max 900 tons, H
10.6 m or W 9 m or L 33 m) 400,000 tons resting on the tokamak
seismic isolation pit 13 billion euros
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Page 8 2013, ITER Organization Page 8 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015
Slide 9
Page 9 2013, ITER Organization Page 9 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Maintenance
Basics
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Page 10 2013, ITER Organization Page 10 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 1.establish and
implement a regulatory program consisting of policies, processes
and procedures that provide direction for maintaining structures,
systems and component of the ITER plant. When incorporated into the
ITER licence or other legally enforceable instrument, the above
regulatory program becomes a legal requirement. 2.define and follow
a systematic approach to identify which maintenance activities are
to be performed, on which structures, systems and components
(SSCs), and at what intervals. The type and frequency of
maintenance activity applied to each SSC is proportional to the its
importance to safety (safety class), design function and required
performance. 3.demonstrate that the maintenance strategy has a
prioritization criteria and methodology, which are applied to the
work management, to take into account the key licensing basis
requirements: safety analysis, regulatory requirements, ALARA and
codes and standards ITER MAINTENANCE WBS MISSION STATEMENT (ref.
Policy for the ITER Plant Maintenance ) Policy for the ITER Plant
Maintenance
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Page 11 2013, ITER Organization Page 11 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015
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Page 12 2013, ITER Organization Page 12 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Plant availability
objectives RAMI analysis results Maintenance requirements Radiation
level Remote Handling Hands-on maintenance Perform maintenance
& upgrades [ref. PR289-I, PR307-I] Balance Risk and Cost
Provide maintenance in radiation environment Fit the required
maintenance with capacity of the maintenance system (equipment and
space) [continued] Limit the impact on performance or safety Design
efficient maintenance solutions ITER MAINTENANCE PROJECT
REQUIREMENTS Ensure/demonstrate maintainability
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Page 13 2013, ITER Organization Page 13 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 1.Balance Risk and
Cost The project policy regarding maintenance provision is to
balance risk and cost by assigning a RH classification for
maintenance tasks according to the likelihood or the need of them
having to be carried out at regular intervals, and to define the
level of provision to be made for each classification. [PR1075-I]
2.Provide Maintenance in radiation environment Provisions for
remote maintenance shall be made for all environments where
hands-on maintenance would result in ITER administrative limits
(
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Page 14 2013, ITER Organization Page 14 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015
4.Ensure/demonstrate maintainability Maintenance plans shall be
developed for all scheduled maintenance and for all credible
maintenance scenarios with a probability of occurrence greater than
10-6, over the 20-year life of ITER, and maintenance procedures and
tools shall be provided for maintenance scenarios with a
probability exceeding 10-1 over the 20-year life of ITER [PR1016-R]
5.Avoid impact on performance or safety The objective of
maintainability is to develop equipment and systems which can be
maintained in the least time, at the least cost, with a minimum
expenditure of support resources, without adversely affecting the
items performance or/and its safety characteristics. [PR998-I]
6.Design efficient maintenance solutions The maintainability shall
ensure the minimum time to recognize, isolate and correct a
malfunction, to understand and apply technical procedure for the
maintenance technicians, to gain access to faulty items, to repair
or replace faulty items and to test and verify accuracy and
adequacy of maintenance actions. In addition, the maintainability
shall require the lowest amount possible of required facilities,
tools, tests, support requirements and maintenance staff training
to enable the fulfilment of maintenance requests. [PR1001-I] ITER
MAINTENANCE PROJECT REQUIREMENTS
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Page 15 2013, ITER Organization Page 15 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER MAINTENANCE
POLICY ITER MAINTENANCE DIRECTORY 1.database of all maintenance
tasks defined for ITER 2.management tool for the approval of
maintenance tasks (incl. risk assessment) IMD Policy IMD Procedure
ITER Maintenance Policy IMD Work Instruction RH Compatibility
Procedure ITER MAINTENANCE MANAGEMENT BASIS ITER MAINTENANCE
PROGRAM RH Code of Practice
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Page 16 2013, ITER Organization Page 16 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER MAINTENANCE
COMPATIBILITY ASSESSMENT PROCESS PDF TDF OSD Define Plant Define
Task Define RH Sequence Verify RH Sequence Validate RH Sequence VR
Animation VR / HW Mock-up Tooling concepts Plant Design
Feedback
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Page 17 2013, ITER Organization Page 17 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Maintenance
Regulatory Context
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Page 18 2013, ITER Organization Page 18 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 1.The legislative
and regulatory sections of the French Public Health Code and of the
Labour Code were amended in 2001 and 2006 in order to integrate
EURATOM directives concerning radiation protection 2.In parallel,
the French Autorit de sret nuclaire (ASN) updated the regulatory
part of both Codes in order to integrate theAutorit de sret
nuclaire EURATOM Directive No. 2003/122 of 22 December 2003 on the
Control of High-activity Sealed Radioactive Sources and Orphan
Sources 3.It is the ASNs responsibility to license the
commissioning of any Basic Nuclear Installation (INB) and to set
relevant design, implementation and operation requirements pursuant
to the related decrees. ITER is an INB Radiation Protection is one
such fundamental requirement Ref: Code de la sant publique [Public
Health Code], Journal officiel de la Rpublique franaise10, French
version only.
See:www.legifrance.gouv.fr/affichCode.do?cidTexte=LEGITEXT000006072665&dateTexte=20080713www.legifrance.gouv.fr/affichCode.do?cidTexte=LEGITEXT000006072665&dateTexte=20080713
Law & Regulations
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Page 19 2013, ITER Organization Page 19 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 The general
international radiation-protection principles (justification,
optimisation, limitation), established by the International
Commission on Radiological Protection (ICRP) and included in
EURATOM Directives, are integrated into the Public Health Code
(Article L1333-1). They constitute the guidelines for regulatory
activities within ASNs jurisdiction. Ref: Code de la sant publique
[Public Health Code], Journal officiel de la Rpublique franaise10,
French version only.
See:www.legifrance.gouv.fr/affichCode.do?cidTexte=LEGITEXT000006072665&dateTexte=20080713www.legifrance.gouv.fr/affichCode.do?cidTexte=LEGITEXT000006072665&dateTexte=20080713
Radiation Protection Principles JUSTIFICATION PRINCIPLE A nuclear
activity or intervention may not be undertaken or performed unless
justified by its health, social, economic or scientific benefits,
when compared with the hazards inherent to ionising radiation to
which the persons are likely to be exposed. Assessment of the
expected benefit of a nuclear activity and the associated health
detriment may cause an activity to be prohibited, if the benefit
does not appear to outweigh the hazard. OPTIMISATION PRINCIPLE
Exposure of persons to ionising radiation resulting from a nuclear
activity or intervention must be kept as low as reasonably
achievable, with current technology, economic and social factors
being taken into account, and, as applicable, the medical purpose.
( a.k.a. ALARA principle ) LIMITATION PRINCIPLE Exposure of a
person to ionising radiation resulting from a nuclear activity may
not raise the sum of doses received beyond regulatory limits,
except when that person is subject to exposure for medical or
biomedical research purposes.
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Page 20 2013, ITER Organization Page 20 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 NUCLEAR ACTIVITIES
include those performed in INBs, including MAINTENANCE, which are
the subject of specific attention, due to the significant risks of
exposure to ionising radiation. In the framework of the procedures
referred to in the Transparency and Security in the Nuclear Field
Act (*), all INB operators must demonstrate how they comply with
radiation protection principles (Justification, Optimization,
Limitation) as early as the design stage and at every further stage
in the lifetime of their facility for which ASN delivers a licence,
that is, its creation, its commissioning and its dismantling. INBs
are the subject of further safety reviews, during which the
operator must demonstrate that he is constantly improving safety
and radiation-protection levels. In addition, radiation protection
in INBs is the subject of controls whenever the facilities are
undergoing changes that have an impact on the radiological
protection of workers. Lastly, inspections are also conducted
throughout the term of the licence. (*) ACT No. 2006-686 of 13 June
2006 Radiation Protection in INBs
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Page 21 2013, ITER Organization Page 21 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Why Remote
Handling in ITER ? To mitigate the effect of radiological hazards
to workers caused by proximity to: radiation sources activated
materials and components activated dust and activated corrosion
products Tritium The implementation of Remote Handling techniques
and processes in ITER greatly contributes to achieve the ITER
general safety objectives by avoiding workers exposure to radiation
sources.
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Page 22 2013, ITER Organization Page 22 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Statutory Dose
Limits and ITER Objectives Workers individual limits to ionizing
radiation: ITER Objectives Maximum dose constraint in all
casesALARA and in any case < 10 mSv/year Average individual dose
for workers classified for radiation exposure ALARA and in any case
2.5 mSv/year Individual dose after incidentALARA and in any case 10
mSv per incident
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Page 23 2013, ITER Organization Page 23 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ORE Control
Provisions in ITER Maintenance (ORE) OCCUPATIONAL RADIATION
EXPOSURE control provisions are normally take during: SSCs design
process Buildings design Maintenance equipment design and use
(including its maintenance) o Hands on operations optimized for
speed o Remote operations optimized for reliability ensure RH
equipment reliability (FMECA), rescue, recovery measures to avoid
human intervention establish a RH equipment maintenance plan and
procedures RH equipment decontamination to rely on and to allow
human intervention
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Page 24 2013, ITER Organization Page 24 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment
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Page 25 2013, ITER Organization Page 25 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment TRANSFER CASK SYSTEM
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Page 26 2013, ITER Organization Page 26 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment TRANSFER CASK SYSTEM
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Page 27 2013, ITER Organization Page 27 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment TRANSFER CASK SYSTEM
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Page 28 2013, ITER Organization Page 28 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment South Wall TRANSFER CASK SYSTEM (rescue)
Tritium recovery trolley Winch recovery system
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Page 29 2013, ITER Organization Page 29 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment TRANSFER CASK SYSTEM (rescue)
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Page 30 2013, ITER Organization Page 30 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment TRANSFER CASK SYSTEM (maintenance)
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Page 31 2013, ITER Organization Page 31 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment MULTI PURPOSE DEPLOYER
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Page 32 2013, ITER Organization Page 32 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment MULTI PURPOSE DEPLOYER
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Page 33 2013, ITER Organization Page 33 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment MULTI PURPOSE DEPLOYER (rescue,
maintenance) MPD rescue solution MPD in Hot Cell
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Page 34 2013, ITER Organization Page 34 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment NEUTRAL BEAM RH SYSTEM
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Page 35 2013, ITER Organization Page 35 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment NEUTRAL BEAM RH SYSTEM Crane Rail &
Trolley System NB Vessel opening mechanism Beam source RH equipment
Beam Line Transporter
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Page 36 2013, ITER Organization Page 36 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment NB system cooling pipes and flange tools
NEUTRAL BEAM RH SYSTEM
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Page 37 2013, ITER Organization Page 37 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment DIVERTOR RH SYSTEM CMM mockup CMM Design
Divertor cassettes system
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Page 38 2013, ITER Organization Page 38 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment Blanket Remote Handling system (in-cask
configuration) BLANKET RH SYSTEM
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Page 39 2013, ITER Organization Page 39 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment BLANKET RH SYSTEM Blanket Remote Handling
system (in-vessel deployed configuration)
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Page 40 2013, ITER Organization Page 40 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment HOT CELL RH SYSTEM Hot Cell RH operations
process logic
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Page 41 2013, ITER Organization Page 41 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment
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Page 42 2013, ITER Organization Page 42 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 ITER Baseline
Remote Handling Equipment
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Page 43 2013, ITER Organization Page 43 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Conclusion
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Page 44 2013, ITER Organization Page 44 PURESAFE Final
Conference, CERN Geneva (CH), 19-23 January 2015 Conclusion 1.ITER
is a Basic Nuclear Installation and as such is required to comply
with the safety guidelines and rules applicable to nuclear
activities carried out in commercial nuclear power plants.
2.Nuclear activities include MAINTENANCE, which is the subject of
specific attention by the Safety Authorities, due to the
significant risks of exposure to ionising radiation. 3.The
implementation of Remote Handling techniques and processes in ITER
greatly contributes to achieve the ITER general safety objectives
by avoiding workers exposure to radiation sources.
Slide 45
Page 45 2013, ITER Organization PURESAFE Final Conference, CERN
Geneva (CH), 19-23 January 2015 THANK YOU