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Recommended Procedures and Use ofFire Hydrant Flow TestsPresented by: Kyle Thompson, PE Murray, Smith & Associates, Inc.April 30, 2015
Background MyExperience with Hydrant Flow Tests Small Water Systems Reasonsfor My Interest Using the Data Challenges Calibrating Hydraulic Models Hope to Minimize InefficienciesMurray, Smith & Associates, Inc. Large Water Systems2
Reasons for Hydrant Flow TestsUse and Importance of Accurate DataHydrant Flow Test ProceduresConclusionsMurray, Smith & Associates, Inc.Outline3
Reasons for Hydrant Flow TestsUse and Importance of Accurate DataHydrant Flow Test ProceduresConclusionsMurray, Smith & Associates, Inc.Outline4
Reasons for Hydrant Flow TestsWater System Planning and DesignMurray, Smith & Associates, Inc.Fire Fighting Agencies5
Reasons for Hydrant Flow TestsFire Fighting AgenciesFire Fighting PurposesMurray, Smith & Associates, Inc. Water System Planning and Design6
Reasons for Hydrant Flow Tests Fire Fighting PurposesWater System Planning and Design Water System Plans Evaluating Development Main Extensions Evaluating System Improvements andReplacements Detect Closed ValvesMurray, Smith & Associates, Inc.Fire Fighting Agencies7
Reasons for Hydrant Flow TestsUse and Importance of Accurate DataHydrant Flow Test ProceduresConclusionsMurray, Smith & Associates, Inc.Outline8
Use and Importance of AccurateDataAccuracy vs. PrecisionAccurate:free from error or defect; consistent with a standard, rule, or modelPrecise:exact in measuring, recording, etc. ay, Smith & Associates, e?s t9
Use and Importance of AccurateDataFire Fighting Agencies Training PlanningHydrantsMurray, Smith & Associates, Inc. Marking10
Use and Importance of AccurateDataWater System Planning and Design SimulateHigh Flow ConditionsPressure and Flow-Producing Capabilities of theDistribution System Calibrationof Hydraulic ModelMurray, Smith & Associates, Inc. Determine11
Use and Importance of AccurateDataWater System Planning and Design – Model Calibration Assumptions CommunicationSources of ErrorMurray, Smith & Associates, Inc. Minimize12
Reasons for Hydrant Flow TestsUse and Importance of Accurate DataHydrant Flow Test ProceduresConclusionsMurray, Smith & Associates, Inc.Outline13
Hydrant Flow Test ProceduresStandards / Recommendations AWWA Manual M17; Installation, Field Testing, andMaintenance of Fire HydrantsRecommended Practice for Fire Flow Testing and Marking ofHydrantsMurray, Smith & Associates, Inc. National Fire Protection Association (NFPA) 291;14
Hydrant Flow Test ProceduresHydrant Capacity TestMain Capacity TestImage: Hydro Flow Products, Inc.Image: Hydro Flow Products, Inc.Hydrant Test TwoHydrant TestMurray, Smith & Associates, Inc. Single15
Hydrant Flow Test ProceduresMain Capacity Test – Equipment Needed Pitot Tube with Pressure Gauge Outlet-Nozzle Cap with Pressure Gauge Hydrant Wrench Discharge Diffuser Two People (minimum) Forms for Recording DataMurray, Smith & Associates, Inc. Ruler16
Hydrant Flow Test ProceduresMain Capacity Test – Field Procedures1. Provisions for Minimizing Traffic Interruptions2. Provisions for Drainage of Watera. Flush the Hydrantb. Install Nozzle / Gaugec. Vent Air; Open Main Valve Fullyd. Read Static PressureMurray, Smith & Associates, Inc.3. Residual Hydrant17
Hydrant Flow Test Procedures4. Flow Hydranta. Measure / Record I.D. of NozzleMurray, Smith & Associates, Inc.b. Determine Outlet Nozzle Coefficient18
Murray, Smith & Associates, Inc.Hydrant Flow Test ProceduresSource: AWWA Manual M1719
Hydrant Flow Test ProceduresSource: Pollard WaterMurray, Smith & Associates, Inc.No Coefficient for Smooth Radius0.77 Coefficient for Raised Square Lip0.88 Coefficient for Sharp SquareEdge1.10 Coefficient for Open End Pipe20
Hydrant Flow Test Procedures4. Flow Hydranta. Measure / Record I.D. of Nozzleb. Determine Outlet Nozzle Coefficient5. Conduct the Flow Testb. Open Flow Hydrant Fullyc. Take Readings Simultaneously after Pressure at the ResidualHydrant has Stabilizedd. Record the Readings; Close Hydrants Slowly, One at a TimeMurray, Smith & Associates, Inc.a. One Person at Residual Hydrant, One at the Flow Hydrant21
Hydrant Flow Test ProceduresMain Capacity Test – Record KeepingMurray, Smith & Associates, Inc. Standard Form22
Murray, Smith & Associates, Inc.Hydrant Flow Test ProceduresSource: AWWA Manual M1723
Murray, Smith & Associates, Inc.Hydrant Flow Test ProceduresSource: AWWA Manual M1724
Hydrant Flow Test ProceduresMain Capacity Test – Record Keeping Standard Form Calculate Flow Rate in the Field, Repeat Test if Necessary𝑄 29.83𝐶𝑑2 𝑝 Boundary ConditionsMurray, Smith & Associates, Inc. Note Elevation of Hydrants Being Tested if Not Equal25
Reasons for Hydrant Flow TestsUse and Importance of Accurate DataHydrant Flow Test ProceduresConclusionsMurray, Smith & Associates, Inc.Outline26
Conclusions DetermineAppropriate Test Type Communicate ProvideUpMurray, Smith & Associates, Inc. FollowSupport27
QuestionsContact Information:Kyle Thompson, P.E.Murray, Smith & Associates, Inc.kyle.thompson@msa-ep.com(360) 448-4230Murray, Smith & Associates, Inc.Civil Engineer28
Main Capacity Test Two Hydrant Test . Image: Hydro Flow Products, Inc. Image: Hydro Flow Products, Inc. 15 . Hydrant Flow Test Procedures Main Capacity Test – Equipment Needed Pitot Tube with Pressure Gauge Outlet-Nozzle Cap with Pressure Gauge Ruler Hydrant Wrench Discharge Diffuser Two People (minimum) Forms for Recording Data . 16 . Hydrant Flow Test Procedures Main Capacity Test .
