Data Validation & Reconciliation

PLIM - IAEA May, 14-18 2012 – Salt Lake City

Anh Tho TRAN QUANG, Ir.

Ageing nuclear plants inspection, maintenance and performance monitoring eased by Data Validation and Reconciliation (DVR) approach

Outlines

Belsim Company - Who are we?

Ageing NPP – Challenges and procedures

Data Validation & Reconciliation (DVR) - Another approach

DVR & Nuclear Power Plants - Benefits

Questions

Belsim Company – Who are we?

Leading provider of DVR software and services

More than 20 years of Industry and Technology expertise in DVR

VDI 2048 compliant

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Ageing NPP - Challenges

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Safety Human resources Economical

All actions and decisions…

…optimization

Ageing NPP - Challenges

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Safety Human resources Economical

Preventive Maintenance: Systematic…

…optimization

Ageing NPP - Challenges

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Safety Human resources Economical

Preventive Maintenance: Conditional…

…optimization

Ageing NPP - Challenges

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Safety Human resources Economical

Preventive Maintenance: Conditional…

Continuous inspection Unidentified issues Exact localization

Ageing NPP - Challenges

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Safety Human resources Economical

Preventive Maintenance: Conditional…

Continuous inspection Unidentified issues Exact localization

Plant process data enhancement Information Reliability & Availability Automated procedure

Ageing NPP – A new approach

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

RAW

RECONCILED

Data Validation & Reconciliation – THE PRINCIPLES

VARIABLES EQUATIONS

THERMODYNAMIC

RED

UN

DA

NT N

ETW

OR

K

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

OPERATOR’S KNOWLEDGE

ON SITE OBSERVATIONS

Move from individual observation to network …

MASS BALANCE ONLY

1. Sensor precision

2. Installation problems, induced biases

3. Fluctuation of the physical phenomenon itself

4. Drift or accuracy bias of the sensor itself

5. Compensation (e.g. flow meters)

6. Accuracy of the acquisition system

σ: 5%

σ: 20%

σ: 10%

MASS IMBALANCE 10 ≠ 7 + 6

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Data Validation & Reconciliation – THE PRINCIPLES

CORRECT ALL measurements

As LITTLE as possible

Using REDUNDANCY (more information than required)

*

iy iy

0),

0),

)(

*

*

2*

ji

ji

i i

ii

xyG(

xyF( to subject

y

yyMin

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

MASS IMBALANCE 10 ≠ 7 + 6

Move from individual observation to network …

σ: 5%

10.29

4.71

5.58

MASS BALANCE CLOSED 10.29 = 4.71 + 5.58

σ: 4.6%

σ: 20% σ: 14.4%

σ: 10% σ: 9.9%

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

REDUNDANT INFORMATION Independent ways of calculation

RELATED INFORMATION Interdependent Network of information

CROSS CHECK INFORMATION Most probable state of your plant

Move from individual observation to network …

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Data Validation & Reconciliation – INCOHERENCY

Global Statistical test condition

95% of measurements are within confidence interval

Individual Statistical test condition

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

Data Validation & Reconciliation – WORKFLOW

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

DVR Results – INEFFICIENCIES DETECTION

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

6 times higher than expected

DVR Results – FAULTY SENSORS DETECTION

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

8/06/10 9/06/10 10/06/10 11/06/10 12/06/10

Flo

w r

ate

[k

g/s

]

HP reheater condensate cooler flow kg/s

∆ ≈ 9 kg/s

After DP range

modification

DVR Results – SENSOR DRIFTING

Total main feedwater flow based on reconciled data

Total main feedwater flow based on raw data

kg/s

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

35

36

37

38

39

40

41

42

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

23/12/11 12/01/12 1/02/12 21/02/12

MA

SS

FLO

W T

UB

E S

ID

E [

kg

/s]

UG

LO

B [

W/

m²/

K]

DVR Results – EQUIPMENT DEGRADATION

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

DVR Results – REACTOR THERMAL POWER

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

MW

th

erm

al

Reactor thermal power based on RAW data

Reactor thermal power based on RECONCILED data

Sea water temperature

Conclusions

Automatic workflow

Early detection

Real-time access

Reliable, coherent and most accurate

Safety Human resources Economical …optimization

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS

=

Thank you for your attention!

anhtho.tranquang@belsim.com

www.belsim.com or call us +(32) 4 259 88 88

BELSIM

AGEING NPP

DVR A NEW APPROACH

DVR BENEFITS PERFORM. MONIT.

TRUE PICTURE

CONCLUSION

QUESTIONS