Contingency Planning for Temporary Pumping of Storm Water & Flooding Presented By: Ryan Booth

Transcription

1 Contingency Planning for Temporary Pumping of Storm Water & Flooding Presented By: Ryan Booth

2 Why is this important to me? Population Density in Coastal Shoreline Counties & Coastal Watershed Counties is 3 to 4.5 times that of the Population density in the United States as a whole. Since water follows the path of least resistance, it will find the weakest point and exploit it. I live here too.

3 My experience with contingency planning and disaster management:

4 Presentation Outline: Part 1: Part 2: Part 3: Part 4: Identifying Potential Risks for Flooding and potential avenues for releif Identifying the potential affects of damages from flooding Addressing power availability/losses Mobilization Plans Opportunities for Advanced Set Up Storage of systems for immediate response/readiness Mobilization concerns Basic Sizing of temporary pumping systems Partnering with experts to develop contingency plans Questions & Answers

5 Part 1 Identifying Potential Risks for Flooding

6 Storm Run Off

7 Flow Controls

8 Leak Back on Valves & Fitting at 1 GPM Per Wetted Inch 24 Sluice 1 GPM Per wetted inch: 96 GPM 48 Sluice 1 GPM Per wetted inch: 192 GPM 24 Gate Valve/Check Valve: 75 GPM 48 Gate Valve/Check Valve: 150 GPM

9 Flow Controls

10 Inflow & Infiltration

11 Inflow & Infiltration

12 Retention & Detention Basins

13 Retention & Detention Basins

14 Pump Stations (Think about power, controls, and motors) Sewage Pump Stations Storm Water Pump Stations Potable Water Booster Stations Building/Complex Fire Suppression Systems

15 Part 2 Sizing the pump(s) for the application

16 Sizing and designing portable pump systems Q: With so many choices of pumps and designs, how do you determine which is the right pump for the application? A: The answer lies in the required flow of the application and the physical conditions of the job site.

17 What to know when sizing a portable pump FLOW Approximate amount of flow so that line sizing can be determined. LIFT (gravity resistance) DISTANCE (friction resistance) Vertical elevation distance from lowest point of suction to eye of impeller (static suction lift). Must be less than 28 feet for end centrifigul pumps. Vertical elevation difference from the pump discharge to discharge point (static discharge lift). Total distance of suction and discharge hose.

18 Gravity Resistance Vertical Elevation Difference B A A + B = Total gravity resistance

19 Friction Resistance Velocity of product C D C + D = Total Friction Resistance

20 Total Dynamic Head Sum of All Resistance B A C A + B = Total Gravity Resistance C + D = Total Friction Resistance D

21 Flow and Resistance Two types of resistance: Gravity pumping to higher elevations Friction pumping through hose and pipe Total Dynamic Head is the sum of resistance in a pumping application expressed in feet.

22 FLOW in a line determines velocity Water moving through a line at greater than 12 feet per second creates significant friction and possible cavitation. At less than 12 feet per second, water flows in a flat manner called laminar flow. At greater than 12 feet per second, flowing water is turbulent. Laminar flow: Turbulent flow:

23 Cliff Notes for emergency sizing: SUCTION LIFT If more than 25, recommend submersible pump (electric or hydraulic w/ diesel power pack) Flow (capacity of hose/pipe) 4 = 500 GPM 6 = 1,000 GPM 8 = 2,000 GPM 12 = 4,000 GPM (Max size for Quick Connects) 18 = 7,000 GPM DISTANCE (of hose/pipe) It almost never hurts to increase the suction line one size!!! If the length of hose/pipe on discharge is over 1,000 up size the line one size to maintain the same flow without upsizing the pump.

24 The role of the back up pump ypical Sewer By-pass pumping system desig To ensure continuous pumping, a back up or standby pump is used as a redundant spare. A control panel activated by floats in the suction manhole automatically starts the back up pump as necessary. PRIMARY BACK UP

25 Control systems Control systems for pumps are most commonly float operated and are also available in a single transducer.

26 Knowing how to operate the system Operating speed of pumping equipment Faster is not always better Use recommended speed from pump supplier Fuel consumption and refueling schedule Automatic controls on pumps Float operated Communications in the event of failure

27 Noise Abatement Pumping in residential areas may require reduced noise Sound attenuated cabinets Reduced to 69 dba at 30 feet

28 Residential sewer bypass Utilizing sound attenuated pumps and automatic controls

29 Traffic Flow: Pipes and Ramps Maintain road access during bypass Road ramps Cold patch Reduced cost Reduced disruption

30 Road ramps - keeping traffic moving Discharge flow travels through the ramps with no need for street excavation to bury the pipes during the bypass.

31 Freeze Protection Design system for freezing conditions - Continuous flow - Continuous drainage - Trickle chargers - Block heaters

32 Auxiliary Fuel Tanks Reliable fueling - Larger engines - Higher fuel consumption - Longer run times

33 Part 3 Partnering with experienced professionals

34 Partnership Understand your partners capabilities and offerings Set up accounts early. - Get a contact list put together for both parties Job walks/site visits to war-game and get equipment lists put together. - Set up potential purchases and rentals in advance Understand the logistical concerns - Loading/Unloading - Set-up/Tear Down - Maintenance - Mobilizations Discuss rental and purchase options.

35 35 Thank You