1. Hydroelectric Turbine Applications and losses
- Michael Bove, P.E. Vice President for Engineering Hartford Steam Boiler Inspection and Insurance Company
- Andrew Rerak, MEng, PEng Regional Engineering Manager Boiler Inspection and Insurance Company of Canada
By: Michael P. Bove P.E. , HSB IIC
Andrew Rerak M.Eng, P.Eng, HSB BII
Risk Control & Losses

2. Hydroelectric Process
Generating Methods
Dam
Pumped storage
Run-of-the-river
Tidal
Underground

3. Equipment Hydro Turbines Reaction Turbine Propeller Kaplan Bulb Tube
Straflo
Francis
Kinetic
Impulse Turbine
Pelton
Turgo
Cross-Flow

4. Equipment / Alternative Methods
Hydrokinetic

5. Application Typical Range of Heads Type Head [m]
Hydraulic wheel turbine
0.2 < H < 4
Archimedes’ screw turbine
1 < H < 10
Kaplan
2 < H < 40
Francis
10 < H < 350
Turgo
50 < H < 250
Pelton
50 < H < 1300

6. Application Typical Range of Heads up to 30 MW Type Head [m]
Type
Head [m]
Hydraulic wheel turbine
0.2 < H < 4
Archimedes’ screw turbine
1 < H < 10
Kaplan
2 < H < 40
Francis
20 < H < 350
Turgo
50 < H < 250
Pelton
50 < H < 1300

7. Equipment / Turbine Runners

8. Equipment / Reaction Turbines

9. Equipment / Impulse Turbines

10. Equipment Cont. Gearbox Transformer Generator
Miscellaneous Electric Apparatus (MEA)

11. Risk Key Risk & Exposures Catastrophe (CAT) Property Damage (PD)
Business Interruption (BI)
Equipment Breakdown (EB)
Liability
Environmental

12. Risk Types & Exposures – Equipment Breakdown
Hydro Powerhouse Equipment
Turbine
Gearbox
Generator
Transformer
MEA

13. Risk Types & Exposures – Business Interruption
Length of business interruption
Degree of business interruption
Changes in revenues
Changes in expenses
Restoration to normal income
BI= Σ(A+B+C+D+E)

14. RISK CONTROL & RISK ENGINEERING
Survey
Risk Assessment
Recommendations
Audit Inspections
Risk Updating
LOSS PREVENTION
Risk Management Process
Identifying loss exposures
Analyzing loss exposures
Examining the feasibility of risk management techniques (Avoidance, Loss Prevention, Loss reduction, Separation, Duplication, Diversification)
Selecting the appropriate risk management techniques
Implementing the selected risk management techniques
Monitoring results and revising the risk management program

15. Hydro Failure Case Studies
Michael Bove, P.E. Vice President for Engineering
Hartford Steam Boiler Inspection and Insurance Co.
Andrew Rerak, MEng, PEng Regional Engineering Manager
Boiler Inspection and Insurance Company of Canada

16. Case Study #1
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

17. Case Study #1
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

18. Case Study #1
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

19. Case Study #1
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

20. Case Study #1
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

21. Lessons Learned Regular inspections prevent failures
Case Study #1
Lessons Learned
Regular inspections prevent failures
Knowledgeable owners can minimize Business Interruption claims
Understand the root cause and prevent reoccurrence
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

22. Case Study #2
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

23. Case Study #2
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

24. Case Study #2
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

25. Case Study #2
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

26. Case Study #2 Lessons Learned
Understand the competency of 3rd party repair shops
What you get with the OEM…
What you get with low bidder…
What you get from a consultant…
Understand the root cause and prevent reoccurrence
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

27. Case Study #3
Gearbox
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9/21/2018

28. Case Study #3 Overall Gearbox
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

29. Case Study #3
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

30. Case Study #3 Bull gear and shaft – no problems.
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

31. Case Study #3
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

32. Case Study #3
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

33. Case Study #3 Lessons Learned
Major repairs are sometimes outside the owner’s knowledge
Take the time to find the root cause or risk repeating.
"If you do not have time to do it right, when will you find the time to do it over?“ 
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

34. Case Study #4
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

35. Case Study #4
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

36. Case Study #4
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

37. Case Study #4
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

38. Case Study #4 Lessons Learned
Outside incidents can damage your machinery
Initial assessments can be wrong
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

39. Case Study #5
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

40. Case Study #5 Lessons Learned
Transformers fail for a number of reasons and that’s a whole different presentation……
© 2013 The Hartford Steam Boiler Inspection and Insurance Company. All rights reserved.
9/21/2018

41. Thank you very much for your attention
© 2013 The Hartford Steam Boiler Inspection and Insurance Company.
All rights reserved.
Thank you very much for your attention
Michael Bove P.E.
VP, Engineering , HSB IIC
Andrew Rerak M.Eng, P.Eng
Regional Engineering Manager, HSB BII