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Pumping Systems and Day Tanks Presented By Ken Still, CB Kramer 1.

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Presentation on theme: "Pumping Systems and Day Tanks Presented By Ken Still, CB Kramer 1."— Presentation transcript:

1 Pumping Systems and Day Tanks Presented By Ken Still, CB Kramer 1

2 Agenda Introduction Basic System Generator Pump Selection Boiler Pump Selection Pump Types and Limits Day Tanks Day Tank Accessories Pump and Day Tank Control Conclusion 2

3 Introduction Ken Still – CB Kramer Pump sets and day tanks typically operate as a single system with a common controller. 3

4 Basic System 4 Monitoring and Control

5 Generator Pump Selection 7 gph per 100KW = GPH GPH x # gensets = GPH Total GPH total x 4 = transfer pump size 5

6 6

7 Boiler Pump Selection 30gph per 100 BHP = GPH GPH x # boilers = GPH total GPH total x 2.5 – 3 to accommodate boiler mounted pump total flow 7 Typical boiler system selection

8 8

9 Typical System w Boiler Pumps Boiler Mounted pump limitations Tight pump suction limits; 15hg – 3psi Boiler pump single point of failure Boiler pumps requires times flow rate (sometimes 10-15x more) from transfer pump 9

10 10 Typical System w Boiler Pumps

11 Alternative Boiler System

12 Pump Types Match the pump to the application Suction or pressure type 12 SUCTION PUMP SETPRESSURE (submersible) PUMPS

13 Pump Sets Submersible Pumps 13 Pro Submerged suction Simple single tank systems Simple installation Con Pressurized in-ground piping Limited sizes Difficult maintenance Unmanned spaces Piping Monitoring Complicated multi-tank redundant systems

14 Pressure Pump System 14 Redundancy Each tank must have redundant pumps

15 Pump Sets Suction Pumps 15 Pro Buried piping under suction Ease of maintenance Simpler multi tank systems Simple installation Con Limited suction ability Additional floor space

16 Suction Pump System 16 Redundancy A single duplex pump set satisfies redundancy requirement

17 Suction Pump Set Options High Pressure 100psi Low Pressure <50 psi 17 mechanical pump set pump set with motor starter panel Pump set with motor starter and logic control panels

18 Suction Pump Set Contruction 18 Pump/motor sets Control panel(s) Gauges Priming funnel Relief valves Flow switch Suction strainer(s) Reservoir base w/leak switch

19 Basic System 19 Monitoring and Control Day Tanks

20 Built and certified to UL142 Pressure tested to 5 psi Almost always used on generators Stand Alone Belly Tank Sometimes used on boilers 20

21 Day Tanks Stand Alone Generator Belly Tank 21

22 Belly Tanks Completely isolate tank from generator 22 Flexible fuel hose Spring isolation

23 Independent Day Tanks Double Wall Return Pump Option 23

24 Independent Day Tanks Single Wall Single Wall w/Tub Type Rupture Basin Available w/o rupture basin 24

25 Day Tank Accessories Automatic fill manifold Multi-tank applications Sized to precisely match required flow 25

26 Day Tank Accessories Return Pumps Manipulate tank level to test controls Refresh fuel if it overheats Empty day tank in emergency 26

27 Day Tank Accessories Accessories Vent Caps Level Indication Level Monitoring Others 27

28 Day Tank Sizing No rules or regulations requiring minimum sizes. Some regulations limiting maximum sizes IFC limit to 660 gallons in certain installations Generator KW x.07 x hours desired = tank size Often space dependent 28

29 Day Tank Construction Fittings in top of tank (except drain) Easy access to all fittings Drop tubes on all supply and returns Keep the inflow away from generator suction 29

30 Primary functions Monitor day tank level Start/stop pumps Open/close fill manifolds Secondary functions Leak detection Communications and alarms Auxiliary controls 30 Pump and Day Tank Controls

31 Safe Design High voltage separate from low voltage Easy serviceability and compliance to NFPA and OSHAE standards 31 High voltage motor control panel Low voltage logic control not to exceed 49 volts

32 Pump and Day Tank Controls NFPA 70e 32

33 Conclusion 33 Basic System Generator Pump Selection Boiler Pump Selection Pump Types and Limits Day Tanks Day Tank Accessories Pump and Day Tank Control


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