WaterOps

Card Set Information

Author:
dfrazier
ID:
128792
Filename:
WaterOps
Updated:
2012-01-18 19:14:36
Tags:
KFD Engineer Water Operations
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Description:
KFD Water Operations Presentation
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  1. Residual Pressure Min
    20 PSI
  2. 10, 20, 30 Rule (10, 15, 20)
    • 10% drop in residual= 3 more like lines
    • 15% = 2 more
    • 20%= 1 more
  3. Small diameter supply limits
    • No longer than 300 feet due to friction loss
    • Use parallel lines to reduce friction loss
  4. Drafting- three lift types and distance
    • 1. Theoretical lift- 33.9 in perfect vacuumn at sea level (.5/1000ft)
    • 2. Maximum lift- 25 ft at sea level
    • 3. Dependable lift 15 ft (70% pump capacity left to flow)
  5. Drafting hose strainer distance
    2 feet above bottom and below surface
  6. Relay vrs Tender Supply
    Relay if over 300 GPM is needed
  7. Relay Residual Pressure
    Always maintain 20 PSI residual (FL +20)
  8. Dual Pumping (def)
    • Intake to intake
    • Uses residual flow from hydrant to feed second engine
  9. Tandem Pumping (def)
    • Discharge to Intake
    • Doubles pressure available to 300 psi at full capacity
  10. Tender Supply (less than 300 GPM)
    • Tender should be 1000-3000 Gallon capacity
    • Able to dump at 1000 GPM

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