EDA CONFERENCE – AMSTERDAM – NOVEMBER 2011

DECONSTRUCTION OF THENUCLEAR POWER PLANT CAORSO (PC)

• DISMANTLING OF THE TURBINE AND ANNEX BUILDINGS

LOCATION

LOCATION

PO’ RIVER

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

LONGITUDINAL TURBINE BUILDING SECTION

CERTAIN AREAS IN DETAIL

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

EQUIPMENT AND LINES TO PROTECT

TRACEABILITY OF COMPONENTS

“SPOOL IDENTIFICATION”

CUTTING TECHNOLOGY CHOICE

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

Cutting technologies to reduce risks

COMPONENTS REMOVAL

MATERIALS HANDLING

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

DISMANTLING OF THE AREACOMPONENTS

Results

Effective production lower than expected

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

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

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%

EFFECTS ON PRODUCTION

WORKING PROGRAMME

RESULTS

LABOUR USED

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.

THANK YOU

EDA CONFERENCE – AMSTERDAM – NOVEMBER 2011