eda conference – amsterdam – november 2011. deconstruction of the nuclear power plant caorso...
TRANSCRIPT
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EDA CONFERENCE – AMSTERDAM – NOVEMBER 2011
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DECONSTRUCTION OF THENUCLEAR POWER PLANT CAORSO (PC)
• DISMANTLING OF THE TURBINE AND ANNEX BUILDINGS
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LOCATION
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LOCATION
PO’ RIVER
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DECOMMISSIONING OF THE TURBINE BUILDING AND
TURBINE ANNEX
• DECOMMISSIONING OF 6.000 TON OF EQUIPMENT,
STRUCTURES, PIPES, TANKS INSIDE THE TURBINE
BUILDING
• DECONTAMINATION OF 1.200 TON OF RADIOACTIVE
MATERIAL
• RUNNING TIME: 30 MONTHS
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LONGITUDINAL TURBINE BUILDING SECTION
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CERTAIN AREAS IN DETAIL
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DETAILED DESIGN FOR EACH AREA
• Identification of the lines and facilities to preserve
• Identification of the SPOOL
• Dismantling sequenze
• Choice of the cutting techniques
• Procedures for components removal
• Materials handling
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EQUIPMENT AND LINES TO PROTECT
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TRACEABILITY OF COMPONENTS
“SPOOL IDENTIFICATION”
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CUTTING TECHNOLOGY CHOICE
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DISMANTLING SEQUENCE
1. Electrical systems (boards, conduits and possibly cable conduits)
2. Electric Motors, servo-motors
3. Carpentry and civil structures
4. Line pipe and components
5. Supports and cushions
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Cutting technologies to reduce risks
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COMPONENTS REMOVAL
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MATERIALS HANDLING
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DISMANTING SEQUENCE PROCEDURES
Processing flowchart
AREA PROJECT
(SPOOL, WEIGHTS,ELIMINA
TION
MODE/HANDLING)
SOGIN
APPROVAL
SOGIN VERIFICATION (SPOOL, PLANTS
TO PRESERVE)
DISMANTLING
DECONTAMI-NATION
TBA, TBC, TBE
TBD (NON CONTAMINATED)
CONTROL 100%
CONTROL 10%
ALIENATION
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DISMANTLING OF THE AREACOMPONENTS
Results
Effective production lower than expected
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PROBLEMS
• RUNNING THE SYSTEM (creating spool,
“physiological” times of the system, understanding the
implementation procedures)
•RESTRICTIONS INTRINSA TO THE SYSTEMIMPROVEMENT OF THE NATURAL HEALTH CONTROL PROCESS
IMPROVEMENT OF THE MATERIAL HANDLING PROCESS
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PERFORMING DISMANTLING ACTIVITIESProcessing flowchart
BEFORE THE FIRST CHANGES
PROGETTO DI AREA
(SPOOL, WEIGHT, DISMANTLING
MODES/HANDLING)
SOGIN
APPROVAL
SOGIN VERIFICATION (SPOOL, PLANTS
TO PRESERVE)
DISMANTLING
DECONTAMI-NATION
TBA, TBC, TBE
TBD (NON CONTAMINATED)
CONTROL 100%
CONTROL 10%
ALIENATION
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AMENDMENTS TO THE WORKING FLOW
AREA PROJECT
(SPOOL, WEIGHTS,
DISMANTLING MODES/HANDLING
)
SOGIN APPROVAL
SOGIN ( VERIFICATION
SPOOL, PLANTS TO PRESERVE)
DISMANTLING
DECONTAMI-NATION
TBA
TBC
TBD, TBB
CONTROL 100%
CONTROL 10%
ALIENATION
PRE-CONTROL
CONTROL 10%
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EFFECTS ON PRODUCTION
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WORKING PROGRAMME
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RESULTS
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LABOUR USED
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CONCLUSIONS
1. Extreme design at all stages of intervention
2. Training of employees
3. Creation of new technologies and working procedures not needed until now on traditional field
4. In the order of magnitud the decommissioning and demolition costs are not comparable
5. The decommissioning is not a variant of the demolition work but a real industry that requires expertise and skills.
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THANK YOU
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EDA CONFERENCE – AMSTERDAM – NOVEMBER 2011