Nuclear Research Institute Řež plc
Technical-economical study of Czech NPPs
Long Term Operation
P. Kadečka, J. Žďárek
2. 11. 2006
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Main Goal and NRI Role
• Performance of TE study should enable to
define Dukovany NPP life extension optimum
and to prepare bases for follow up realization
program.
• NRI makes this study in very close
cooperation with Dukovany NPP (technical
and basic economical part) and CEZ HQ
(general economical part).
5. Int. Conf. OKB Gidropress, 2007 2
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Main Goal and NRI Role
Work started at 2004 has two main parts:
• Technical, based on:
• IAEA-TECDOC-1309, Cost drivers for the
assessment of nuclear power plant life extension
• Economical, based on:
• IAEA matrix for NPP economic assessment
• CEZ requirements
Two methodologies for both parts of the study
were prepared.
5. Int. Conf. OKB Gidropress, 2007 3
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
IAEA TECDOC Cost Drivers (1/2)
1. Safety upgrades to meet regulatory
requirements
2. Other non-safety and conventional system
upgrades
3. Management programs and processes
4. Environmental impact assessment
5. Maintaining expertise
6. Public acceptance
7. Radioactive waste & spent fuel management
5. Int. Conf. OKB Gidropress, 2007 4
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
IAEA TECDOC Cost Drivers (1/2)
8. Decommissioning
9. Licensing process
10. Operating and maintenance (O&M) review
11. Operating spares and consumables
12. Fuel cycle improvements
13. Overall risk assessment
5. Int. Conf. OKB Gidropress, 2007 5
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Cost of ensuring SC LTO (1/3)
• One of the most important and compliceted
element of the study is calculation of cost
necessary to ensure NPP‘s structures or
components (SC) LTO.
• It is part of drivers 1 and 2.
5. Int. Conf. OKB Gidropress, 2007 6
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Cost of ensuring SC LTO (2/3)
Work is done in following steps and results obtained are
screened and comented by Dukovany NPP staff:
• Selection of structures or components with high cost of
replacement or refurbishment
• Determination of term when measure to ensure selected
SC LTO will be necessary to adopt (assuming current
service and maintenance of SC)
5. Int. Conf. OKB Gidropress, 2007 7
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Cost of ensuring SC LTO (3/3)
• Design of different possible measures
(replacement, refurbishment, ageing
management, design change, …) and their
application optimum schedule which can be
used for selected SC (with necessary
measures application to enable NPP‘s LTO)
• Determination of designed measures costs
5. Int. Conf. OKB Gidropress, 2007 8
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Management and tools (1/2)
• Work managed by division 300 NRI is done in
cooperation with:
• Division 200 (Nuclear Safety)
• Division 500 (Energoproject Prague, Czech Design
Authority)
• Škoda Research (NRI daughter)
• UAM Brno (NRI daughter)
• ECC (External company, Economic expertise)
5. Int. Conf. OKB Gidropress, 2007 9
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Management and tools (2/2)
• All results are saved to Microsoft Access database
called EDULTO
• Database is continually developed in accordance with
requirements from work flow
• Database is compatible with Dukovany SC register
(Passport, MNT Graph)
• In the future the database will be part of EDU PLIM
database called INFOZ (structure is also NRI product)
• Except already mentioned sources also Knowledge
Management System DART , with Dukovany NPP DB
is used
5. Int. Conf. OKB Gidropress, 2007 10
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Main form of Dukovany LTO database
with component selection
5. Int. Conf. OKB Gidropress, 2007 11
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Form of Dukovany LTO database,
containing second step evaluation results
5. Int. Conf. OKB Gidropress, 2007 12
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Form of Dukovany LTO database, Design of
possible measures (1/3)
5. Int. Conf. OKB Gidropress, 2007 13
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Form of Dukovany LTO database, Design of
possible measures (2/3)
5. Int. Conf. OKB Gidropress, 2007 14
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Form of Dukovany LTO database, Design of
possible measures (3/3)
5. Int. Conf. OKB Gidropress, 2007 15
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
OPTIMUD INFOZ
5. Int. Conf. OKB Gidropress, 2007 16
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
DART EDU CZ, DB Knowledge
Management System
5. Int. Conf. OKB Gidropress, 2007 17
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Other Cost Drivers Evaluation (1/2)
For other cost drivers, analyses are done and if
necessary measures are also designed. For
instance:
• Safety upgrades to meet regulatory
requirements are evaluated on the basis of
PSR done by Dukovany LBB
5. Int. Conf. OKB Gidropress, 2007 18
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Other Cost Drivers Evaluation (2/2)
• Management programs and processes are
evaluated taking into account results of IAEA
SALTO project in which CEZ, NRI and Czech
Regulatory Body (SÚJB) are very active
• Licensing process is prepared and evaluated
on the base of QA program for LTO. QA
program is prepared by Dukovany NPP staff
and discussed and agreed with SÚJB.
5. Int. Conf. OKB Gidropress, 2007 19
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Economical Part of Study (1/2)
• Economical part preparation is done by external
subcontractor of NRI
• Final calculation will be done by CEZ experts
using their tools, procedures and confidential
strategies
• All will be done in accordance with Czech Rep.
laws and CEZ procedures
5. Int. Conf. OKB Gidropress, 2007 20
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Economical Part of Study (2/2)
• NRI finish its work by determination of price
for accepted measures
• Also the possible time schedule for measures
realization and their interactions are taking
into account. For this reason a tool called Big
Map of Actions designed by Dukovany staff
will be used and updated (new computer
application).
5. Int. Conf. OKB Gidropress, 2007 21
Nuclear Research Institute Řež plc.
Division of Integrity and Technical Engineering
Conclusion
• TE study will be finished in 2007
• On base of CEZ management decision, a
preparation of detail realization program is
supposed.
5. Int. Conf. OKB Gidropress, 2007 22