WATER SYSTEM PRESENTATION. Presenter: Mike Oemcke Company: OCWA Central New York s Water Authority Department: Water System Engineering

Transcription

1 WATER SYSTEM PRESENTATION 2017 Presenter: Mike Oemcke Company: OCWA Central New York s Water Authority Department: Water System Engineering

2 OUTLINE SYSTEM OVERVIEW SOURCES OF SUPPLY MAJOR FACILITIES PRESSURE ZONES GENERAL OPERATIONAL CONCEPTS QUESTIONS

3 SYSTEM OVERVIEW POPULATION SERVED: 340,000 STORAGE FACILITIES: 55 PUMPING FACILITIES: 42 TOTAL AVERAGE SYSTEM DELIVERY: 37 MGD WATER SOURCES: OTISCO LAKE WTP 18 MGD METROPOLITAN WATER BOARD (LAKE ONTARIO) 18 MGD CITY OF SYRACUSE (SKANEATELES LAKE) 1 MGD

4 East Hill Tank McConnellsville Tank

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6 SOURCES OF SUPPLY OTISCO LAKE (UP TO 20MGD) SURFACE WATER SOURCE TREATED WITH PRE OXIDATION, COAGULATION, FILTERING, CORROSION CONTROL, FLUORIDE, AND CHLORINE GENERALLY SERVES THE SOUTHERN PORTION OF THE SYSTEM

7 SOURCES OF SUPPLY

8 SOURCES OF SUPPLY LAKE ONTARIO METROPOLITAN WATER BOARD SURFACE WATER SOURCE (UP TO + 60MGD) TREATED WITH PRE OXIDATION, COAGULATION, FILTERING, PH ADJUSTMENT, FLUORIDE, AND CHLORINE GENERALLY SERVES THE NORTHERN PORTION OF THE SYSTEM OCWA AND MWB HAVE COMBINED IN 2017 IN MANY LOCATIONS WE CAN SERVE EITHER OTISCO WATER, MWB WATER, OR A BLEND OF BOTH DEPENDING ON SEASON/DEMAND

9 SOURCES OF SUPPLY SKANEATELES LAKE CITY OF SYRACUSE 58MGD (UP TO + 3MGD TO OCWA) UNFILTERED WATER SOURCE TREATED WITH PRE OXIDATION, UV LIGHT DISINFECTION, CORROSION CONTROL, FLUORIDE, AND CHLORINE GENERALLY SERVES THE SOUTHERN BRANCH VIA SENECA AND THURBER PUMPING STATIONS OCWA PURCHASES THE WATER FROM THE CITY AT SEVERAL LOCATIONS THE SYSTEMS ARE INTERCONNECTED FOR EMERGENCY PURPOSES, BUT NOT UTILIZED REGULARLY

10 MAJOR FACILITIES PUMP STATIONS WOLF STREET FEEDS NORTH SYRACUSE AND THOMPSON RD. TANK PARK STREET FEEDS LIVERPOOL HOWLETT HILL FEEDS ONONDAGA HILL EAST HILL FEEDS ONONDAGA HILL RESERVOIRS/TANKS WTP CLEARWELLS (3.0 MG) FAIRMOUNT RESERVOIR (10 MG) EASTERN RESERVOIR (50 MG) WESTERN RESERVOIR (20 MG) SALT SPRINGS (5.0 MG) BREWERTON, NORTH SYRACUSE, THOMPSON ROAD (4.0 MG TOTAL) CHITTENANGO RESERVOIR (1.25 MG) THURBER+SENECA FEEDS SOUTHERN BRANCH

11 OTHER TYPES OF IMPORTANT FACILITIES THE WATER TREATMENT FILTER PLANTS TRANSMISSION MAINS PRESSURE REDUCING PRV FACILITIES FLOW CONTROL AND METERING FACILITIES METERS THE SCADA SYSTEM AND TELEMETRY RADIO SYSTEMS GROUND TANKS, ELEVATED TANKS, STAND PIPES PUMP STATIONS

12 SYSTEM OVERVIEW SCADA SCREEN

13 WOLF STREET PUMPING STATION

14 GENERAL OPERATING CONCEPTS OUR SYSTEM IS A COMBINATION OF GRAVITY FED AND PUMPED SERVICE AREAS. OTISCO LAKE WATER TRAVELS FROM THE LAKE TO FAIRMOUNT AND TO WOLF/PARK STREET STATIONS BY GRAVITY MWB WATER HAS TO BE PUMPED FROM THE LAKE UP TO THE RESERVOIRS BEFORE IT CAN BE DISTRIBUTED EACH PUMP STATION IS WORKING TO MAINTAIN A LEVEL IN AN ASSOCIATED TANK TANKS ARE NECESSARY TO MAINTAIN PRESSURE AND MEET SHORT TERM PEAK DEMANDS, SUCH AS FIRE FIGHTING, MAJOR INDUSTRY CYCLES OR SUMMER TIME RESIDENTIAL DEMANDS

15 GIVENS: PHYSICS//MATH PORTION #1 #2..43PSI FOR EVERY FOOT OF ELEVATION CHANGE 2.31 FOR EVERY PSI. #3. THE FIRE DEPARTMENT IS 525 ABOVE SEA LEVEL. EASY MATH; CAMILLUS SKYVIEW TANKS HWL IS 823 THE MATH-HWL: =298 *.43= 128PSI THE MATH-LWL: =252 *.43= 108PSI OPEN DISCUSSION: PRESSURE VERSUS FLOW THE BIGGER THE PIPE THE MORE FLOW.

16 PRESSURE ZONES WHAT IS A PRESSURE ZONE? AN AREA OF THE SYSTEM THAT IS GENERAL SUPPLIED WATER FROM A TANK AND PUMP STATION. THE BOUNDARIES OF WHICH ARE CONTROLLED THROUGH NORMALLY CLOSED VALVES, OR PRV S. HOW MANY DOES OCWA HAVE? WHY? WE HAVE APPROXIMATELY 70 UNIQUE PRESSURE ZONES SHORT ANSWER: HILLS!

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18 PRESSURE ZONES THE GOAL IS TO MAINTAIN BETWEEN 35 AND 80 PSI OF PRESSURE AT EVERY HOUSE SERVED. WE SHOULD NEVER BE LESS THAN 20 PSI. IF OUR ENTIRE SYSTEM WAS FLAT, WE COULD THEORETICALLY HAVE A SINGLE PRESSURE ZONE. ALL THE TANKS WOULD BE THE SAME ELEVATION AND ALL THE CUSTOMERS WOULD HAVE APPROXIMATELY THE SAME PRESSURE AT THEIR TAP. UNFORTUNATELY, TOPOGRAPHY CAUSES HIGHER AND LOWER PRESSURES. THE RESULT IS THE NEED TO HAVE PUMPS, TANKS, AND PRV S TO RAISE, MAINTAIN, AND LOWER THE PRESSURE ACCORDINGLY.

19 PRESSURE ZONES MANY AREA AND PRESSURE ZONES ARE INTER-CONNECTED IT IS IMPORTANT TO NOTIFY OPERATIONS ABOUT REPAIRS, FLOW TESTS, TEST SHUTS, VALVE CLOSING, MAIN BREAKS, AND FLUSHING ACTIVITIES SO THAT THE INTERACTION OF THESE ZONES CAN BE MANAGED MANY OF THE ZONES ARE AUTOMATED AND WILL REACT TO THE CHANGES IN PRESSURE CAUSED BY VARIOUS ACTIVITIES

20 EXAMPLE PRESSURE ZONES Customer Tank Over Flow Elev = 460 Elev = 420 Elev = 345 Elev = 230 Elev = 0

21 EXAMPLE PRESSURE ZONES Estimated Pressure (PSI) = (Tank OF Elev Customer Elev) / psi 100 PSI 200 OF Elev = 460 Elev = psi PSI 200 Elev = psi 100 PSI 200 Elev = 345 Elev = psi PSI 200

22 EXAMPLE PRESSURE ZONES Estimated Pressure (PSI) = (Tank OF Elev Customer Elev) / psi 100 PSI 200 OF Elev = 460 Elev = psi 100 PSI 200 Elev = 0 OF Elev = 185 PRV = 80 PSI Outlet Pressure 0 50 psi 100 PSI 200 Elev = 345 PRV = 80 PSI Outlet Pressure Elev = psi 100 PSI 200

23 If you open this valve? WHAT HAPPENS? 0 17 psi 100 PSI 200 OF Elev = 460 Elev = 420 OF Elev = psi 100 PSI 200 Elev = 0 ` PRV = 80 PSI Outlet Pressure

24 Pressure rises in the downstream system Tank could overflow PRV could go closed Fixtures in homes could be damaged by high pressure Customers may call experiencing high pressure, or low pressure if they are upstream of PRV Pressure surges (oscillation of pressure) Main breaks Dirty water Backflow Event 100 OF Elev = 185 WHAT HAPPENS? 0 PSI 200 Elev = 0 If you open this valve? ` PSI 200 Elev = 420 PRV = 80 PSI Outlet Pressure OF Elev = 460

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31 1930 PIPE VERSUS 1990 PIPE

32 SORBELLO ONION FARM FIRE 2013

33 CAMILLUS CUTLERY FIRE

34 WATER HAULER, 1000 GALLONS X 8#/GAL. + TRUCK WT. APPROX POUNDS

35 THE WRAP UP: WATER AVAILABILITY AND FIRE STRATEGY HOW DOES WATER AVAILABILITY FACTOR INTO MY FIRE FIGHTING CAPABILITIES AND STRATEGY? WATER HAMMER AND PRESSURE TRANSIENTS (SURGES) WHEN SHOULD I CALL OCWA FOR ASSISTANCE??? CALL 911 SHOULD FIRE CONTROL, FIRE DISTRICTS AND OCWA BE INTEGRATED FOR EMERGENCIES AND TRAINING?? (CALL 911) REVIEW WATER SYSTEM DRAWINGS REVIEW WATER HAULING BFP AND HYDRANT METER RIGS. QUESTIONS AND COMMENTS LESSONS LEARNED (FEEDBACK)

36 THE TEST

37 QUESTION 1 WHAT PERCENTAGE OF THE WORLDS WATER IS FRESH?

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39 ABOUT 70% OF THE EARTH S SURFACE IS COVERED WITH WATER. 97% NINETY-SEVEN PERCENT OF THE WATER ON THE EARTH IS SALT WATER. SALT WATER IS FILLED WITH SALT AND OTHER MINERALS, AND HUMANS CANNOT DRINK THIS WATER. ALTHOUGH THE SALT CAN BE REMOVED, IT IS A DIFFICULT AND EXPENSIVE PROCESS. 2% TWO PERCENT OF THE WATER ON EARTH IS GLACIER ICE AT THE NORTH AND SOUTH POLES. THIS ICE IS FRESH WATER AND COULD BE MELTED; HOWEVER, IT IS TOO FAR AWAY FROM WHERE PEOPLE LIVE TO BE USABLE. <1% LESS THAN 1% OF ALL THE WATER ON EARTH IS FRESH WATER THAT WE CAN ACTUALLY USE. WE USE THIS SMALL AMOUNT OF WATER FOR DRINKING, TRANSPORTATION, HEATING AND COOLING, INDUSTRY, AND MANY OTHER PURPOSES.

40 HYDROLOGIC CYCLE

41 THANK YOU AND GOOD NIGHT, DRIVE SAFE