Transcript IRDIT

IRDIT
INNOVATIVE REMOTE DISMANTLING TECHNIQUES
Decommissioning meeting
Brussels
10/03/2003
Contract No. F1KW-2000-00026 „IRDIT“
Partners
 SCK-CEN
BR3 PWR reactor Mol
 EWN
WWER reactors Greifswald
Objectives
 accumulate know-how on remote dismantling techniques
 collection of data for EC DB NET2
 comparison of techniques tested
 verification of data from cold testing (modelling)
Techniques
Cutting
 High Pressure Water Jet Cutting Techniques (BR3)
 Band saw
 CAMC
 Plasma burner
 Oxygen burner
Handling
 Manipulators
 Ventilation
 Water cleaning facility
EWN Project
Remote dismantling of 4 WWER 440 NPP‘s
1
reactor pressure vessel
2
protecting tube unit
3
core basket
4
reactor cavity
5
reactor cavity bottom
6
RPV insulation
7
Annular water tank
2
4
7
3
5
6
Remote dismantling
Reactor components of unit 1-4
1
Time schedule
Action
Conceptual design
Detail planning
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
01/93
06/94
07/94
10/95
Tendering (phase)
11/95
Licensing procedure for full scale testing
11/95
Dismantling of systems and components unit 5
10/95
Implantation and commissioning of techniques
for full scale testing
12/97
12/96
06/97
07/97
10/99
Execution of full scale testing
Licensing procedure units 1-4
Dismantling of systems and components unit 2
10/99
10/02
10/97
08/03
04/98
08/00
Implantation and commissioning of techniques
for dismantling of reactor units 1 and 2
Dismantling of reactor units 1 and 2
Dismantling of systems and components unit 4
12/03
01/00
10/06
04/03
02/99
Implantation and commissioning of techniques
for dismantling of reactor units 3 and 4
09/03
09/03
Dismantling of reactor units 3 and 4
06/07
06/07
EWN Time schedule
04/10
Cutting Methods
Dry cutting area
Band – saws
R.P.V. and reactor internals
Oxygen burners
R.P.V.
Plasma burners
reactor internals
Oxygen core lance
R.P.V.
(only cutting place)
Angle grinder
(only post-cutting place)
R.P.V. and reactor internals
Experience
Experience
1 blade – 12 cuts
Best blades for
cutting
of the
R.P.V.
Cut
surface
with
a
are:
blade
– 4500 cm²
Bi-metal
blades
Blade
change
after 5
Hardness of the
cuts
carrier material 970
Vickers
HV– 20 to 22
Cut
speed
m/min
Tooth pitch
- 0.75 is
to possible
1.4 tpi
Dry cutting
start to cut
- 1.4 to 2.0 tpi
tendon cut
Band - saw
Dry cutting area
– cutting place
Cutting Tools
Wet cutting area
Band – saw
Prooftesting during the Model dismantling
CAMC – device
Prooftesting during the Model dismantling
Plasma burner
Prooftesting during the Model dismantling
Wire saw
Fret-saw
WASJ
Test with original parts from reactor
components on air and in water
Test with original parts from reactor
components in water outside the plant
Experience
CAMC is good at
- cutting materials
with a wall thickness
80 to 300 mm
- cutting materials
with complicated
geometries
CAMC – device
Wet cutting area
Summary of the cutting tools
Methods
advantages
Disadvantages
Application
Band-saw
controlled faulting
only simple
geometries
main proceedings for R.P.V. and cylindrical
reactor internals
Oxygen burner
high cutting performance
strong faulting
special cutting tasks for R.P.V.
Plasma burner
high cutting performance
strong faulting
main proceedings in the cutting pool for
complicated reactor internals
special cutting tasks on the dry cutting area
for austenitic reactor internals
Oxygen core
lance
hole cutting
strong faulting
non planned
Fret-saw
controlled faulting
low cut performance
Angle grinder
very cheap and handy
strong faulting
Wire saw
suitable for cutting
steel and concrete
complicated
construction
WASJ
suitable for wall thickness
higher than 80 mm
high amount of
secondary waste
CAMC
suitable for wall thickness
higher than 80 mm
very strong faulting
substitute method
special cutting tasks and manual handling
main proceedings for annular water tank and
insulation
possible substitute method for reactor
internals plates
main proceedings for reactor internals plates
BR3 Project
PWR 10 MWe
High Pressure Water Jet Cutting
High Pressure Water Jet Cutting
 Collection and evalution of specific data from the
cutting of large components (cold tests and hot
operation) from a small western PWR using the
High Pressure Water Jet Cutting Technique
 Specific data on:
Abrasive consumption
Cutting speed
Secondary waste production
Radiological parameters
SCK•CEN Time schedule
High Pressure Water Jet Cutting
 The equipment consists of a telerobotic
manipulator and a Water Jet Cutting tool
High Pressure Water Jet Cutting
Cutting tests at BR3 site on “cold” pieces
Cutting under water
Cutting in air
High Pressure Water Jet Cutting
Activities during the reporting period
October 2001 – October 2002
• Step 1 of the acceptance tests on simple
geometric pieces
• More complicated cutting trajectories
 On simple carbon steel bars
 Mock up of the NST mounting ring
• Cutting the contour of a primary tube
High Pressure Water Jet Cutting
TO DO during cold tests
 Continue optimalization tests of different cutting parameters on
relevant material thickness
 Complex cutting tests / Tests on real scale mock ups:
o Cutting in vertical & horizontal plane
o Cutting under different angles – finding the right angle in
funtion of the cutting speed and material thickness
o Neutron Shield Tank
o Tube bundle (steam generator)
 Verifying aerosol production
 Modifying and optimize water filtration system
EWN
Nr.
1
2
IRDIT Time schedule with mile stones
2001
2002
2003
2004
06 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12 01 02 03 04 05 06 07 08 09 10 11 12
Vorgangsname
Commencement date
Kick-off-meeting
3
4
5
Wp 1 Basic data description
Kick off meeting report
6
7
8
9
10
11
wp 2 Data collection/evaluation,
WWER
Periodic report/Data evaluation
report WWER, year 1
Periodic report/Data evaluation
report WWER, year 2
Periodic report/Data evaluation
report WWER, year 3
Project meeting
12
13
14
15
16
17
wp 3 Data collection/evaluation,
WESTERN PWR
Periodic report/Data evaluation
report PWR, year 1
Periodic report/Data evaluation
report PWR, year 2
Periodic report/Data evaluation
report PWR, year 3
Projekt meeting
18
19
wp 4 Remote dismantling workshop
20
Final report
21
Workshop report
22
Technological implementation plan
23
Periodic report/Data evaluation
report WWER, year 4
Periodic report/Data evaluation
report PWR, year 4
24
Projekt: IRDITannex2milestoneEWN
Datum: Fr 28.02.03
Meilenstein
Sammelvorgang
Geplanter Meilenstein
Geplanter Sammelvorgang
IRDIT project time schedule
Vorgang
END
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