Title: CLIP for thermal performance monitoring on EDFs PWRs : efficient MW recovering on the secondary syst
1CLIP for thermal performance monitoring on EDFs
PWRs efficient MW recovering on the secondary
system
- F. Gachon, C. Thomas, JM Favennec (EDF RD
Branch, Chatou, France) - E. Tournu (EDF Nuclear Generation
St-Denis, France)
2EDFs Nuclear Power Plants
- Installed capacity 67,000 MWe
- 58 operating reactors (on 19 sites)
- 34 900 MWe (3-loopers)
- 20 1300 MWe (4-loopers)
- 4 1450 MWe (4-loopers)
- PWRs (FRA design on Westinghouse license)
- 1 new reactor being built EPR (Flamanville 3)
- Mutualization on series of similar plants a
powerful motivation for nuclear RD projects - SAPEC 15 M project and investment
- for enhanced safety performance of operation
- CLIP is one of SAPECs Periodic Tests mission
to help recover MWs
3Managing Safety Performance with key Periodic
Tests need for relevant accuracy and quality
secondary side
Pturbine inlet
Eelec power
Ffeedwater flow
primary side
CLIP (MWe losses detection on sec. system)
Pneutron power calibration BIL100?RPN
Fcoolant flow rate (BIL100 RCP114)
Pon-line thermal power calibration BIL100?BILKIT
4SAPECs Safety Performance Periodic Tests (EP)
- The Safety-oriented Periodic Tests are
- BIL100 high accuracy measurement of thermal
Power output on secondary side (between 87
and 100 nominal power) - RPN11/BIL100 check and re-calibration of
external nuclear power detectors - BILKIT/BIL100 adjustment and re-calibration of
BILKIT on BIL100 measurement - RCP114 primary coolant flow rate measurement
(by means of primary-secondary heat
balance) - RGL4 adjustment of the position of grey
control rods with electrical power measurement - RGL102 check of rod falling time
- The Performance-oriented Periodic Tests are
- BIL100 High Accuracy Measurement of Thermal
Power output on secondary side (between 87 and
100 nominal power) - BILXXX measurement of Thermal Power output on
secondary side (between 30 and 100 nominal
power) - CLIP thermal performance efficiency monitoring
on the secondary side
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5SAPEC hardware architecture
Test Ressources Management
test sensors
PATERN
CLIP,
Acquisition Devices
Hewlett Packard, SOLARTRON, AOIP, SFERE....
Site Information System
Network
6SAPEC key elements, data acquisition
7CLIP in the world of SAPEC
8CLIP principle overview
2- Detailed diagnosis on components
1- Global overview
3- Detailed reports with MWe quantification and
localization
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9Expected benefits with CLIP
- For a 1,000 MWe NPP
- a 1 increase in efficiency is 10 MWe additional
power output - 10 MWe is over 1M/year revenue
- a 10 MWe recovery in efficiency with CLIP is 30
times cheaper than building 10 new MWs
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10CLIP principle overview
Monitoring system are secondary side, reheaters
and condenser
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11CLIPs main features for accurate
monitoring of thermal efficiency
accuracy of efficiency monitoring primarily
depends on
- accuracy of measurement data ( 80 specific
test sensors)
- accuracy of modeling (heat balance model with
accurate plant - commissionning test data)
- accuracy of reference data used for comparison
- experience feedback and expert judgment to decide
which faults or problems to diagnose
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12CLIP CITER model of nuclear plant (secondary
system)
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13CLIP CITER thermodynamical elements
Some elementary function blocks
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14CLIPs main features for EDFs operators
- An autonomous and safe system
- An industrial tool
- A system based on a detailed thermodynanmic
modeling of the secondary side - A system providing a diagnosis of high resolution
- A system using validated data with adequate
accuracy - A system allowing what if scenarios to probe
deeper into analysis
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15CLIP global display
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16CLIP Display of final results
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17CLIP Display of detailed results
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18CLIP Reheaters diagram
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19CLIP HP reheaters diagram
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20CLIP Display of detailed results
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21CLIP HP/BP turbines diagram
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22CLIP Display of detailed results
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23CLIP Condenser diagram
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24CLIPs benefits
Benefits from CLIP experience feedback 1-
Detections of MW losses are most numerous in 1-5
MWe range they generate the biggest benefits
because those losses are the most difficult to
detect with conventional means gtgt those
benefits paid very quickly for investment in the
additional instrumentation 2- Above
figure of survey data indicates that benefits are
higher when periodic CLIP test is performed more
often (once a week, typically)
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25CLIPs cost/benefit main figures
- Yearly added revenue with CLIP on PWR fleet is 30
M - CLIP generates an added revenue of 30 times the
cost of its operation - Cumulated benefits up to 2006 are over 300 M
(NPV)
- Gains in MWe in all operating phases of our
plants - When CLIP is installed
- Immediate detection of previous anomalies in
plant operation - When restarting the unit after an outage
- Rapid, optimal reconfiguration thanks to
detection of modifications in settings - During operation
- In-service detection of losses of MWe (drift,
modifications in settings, appearance of
dysfunctions, etc.) - To optimize maintenance
- Aid in decision-making thanks to cost assessment
of losses
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26first installation
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27CLIP benefits
When restarting the unit after an outage
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28CLIP benefits
During operation (1/3)
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29CLIP benefits
During operation (2/3)
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30CLIP benefits
During operation (3/3)
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31CLIP benefits
To optimize maintenance (1/2) aid in
decision-making
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32CLIP benefits
To optimize maintenance (2/2) cost-assessment
of losses related to to a maintenance operation
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