Selecting the right pump for the application -- what to consider

1. Selecting the Right Pump
Brian Gongol
DJ Gongol & Associates, Inc.
April 10, 2017
Iowa AWWA Short Course
Ankeny, Iowa

2. ** The obvious questions **

3. What are we pumping?

4. What are the flow and head conditions?

5. Is this a replacement or a blank-sheet job?

6. Are there site constraints?

7. Are there statutory constraints?

8. ** Solids/no solids **

9. No solids

10. Minor/incidental solids

11. Reducible solids

12. Passable solids

13. Stringy solids

14. ** Suitability to purpose **

15. One condition forever?

16. Future conditions?

17. Relocation/portability?

18. Specialty fluids?

19. Trying to do one thing well?

20. Trying to do many things not so well?

21. Example: Risks with grinder pumps

22. Example: Duty and backwash w/same pumps

23. ** Flexibility **

24. Future conditions

25. New construction/industry

26. Pipe friction changes

27. Friction losses aren't just theoretical

28. ** Maintainability **

29. Can it be opened?

30. On-site, in-situ?

31. Requires a service shop?

32. Modifications to piping for removal?

33. ** Do you get advance warning of trouble? **

34. Visible indicators

35. Oil sight glasses

36. Seal failure warnings

37. ** Wearing concerns **

38. Chemicals

39. Inorganic solids

40. Corrosion

41. Cavitation

42. ** Four types of curves **

43. Steep system, steep pump

44. Steep system, flat pump

45. Flat system, steep pump

46. Flat system, flat pump

47. ** Systemic questions **

48. Duty only

49. Duty and jockey

50. Paced flow

51. Hydro-pneumatic tanks

52. Staged/series

53. Parallel

54. Parallel/series

55. ** Total life-cycle cost **

56. Hydraulic efficiency

57. Energy use

58. Maintenance efficiency

59. Expected useful life

60. Cost of downtime

61. ** Total system efficiency **
A much larger question than
simple hydraulic efficiency

62. ** Hydraulic efficiency **

63. Clearances

64. Vanes

65. Coatings

66. Straight pipe

67. Suction diffusers

68. ** Maintenance efficiency **

69. Preventive/predictive maintenance

70. Knowledge-building through maintenance

71. Interchangeability of parts

72. Special tools to maintain

73. Special training to operate or maintain

74. Maintenance-friendly site layout

75. ** Durability/longevity **

76. How long will it last?

77. Longevity with maintenance

78. Longevity without maintenance

79. Can the system survive periods of neglect?

80. ** Backup operations **

81. Backup power

82. Backup pumps (on the shelf)

83. Backup parts

84. Backup parts kits (seals, rotating assemblies)

85. ** Examples **

86. Recessed lift station (140 gpm @ 50' tdh)

87. WWTP process (325 gpm @ 13' tdh) - sludge

88. Booster pump (14,000 gpm @ 130' tdh)

89. RDT wash booster pump (50 gpm @ 75' tdh)

90. Snow-making application
 160 gpm @ 800' tdh
 240 gpm @ 825' tdh
 320 gpm @ 870' tdh

91. Brine waste (900 gpm @ 99')

92. Low-flow booster station (28,240' of pipe)
 31 gpm @ 142' tdh
 48 gpm @ 178' tdh

93. Portable (1000 gpm @ 20' tdh) - stormwater

94. Sewage lift station (300 gpm @ 50' tdh)

95. Combined sewer/high I&I
 2,000 gpm @ 50' tdh
 5,000 gpm @ 75' tdh

96. Questions?
 Thank you for your time!  Brian Gongol
 DJ Gongol & Associates
 515-223-4144
 www.gongol.net
 info@gongol.net
 @djgongol on Twitter
 facebook.com/djgongol