diesel fuel oil systems- by mark drow & david eoff, preferred
TRANSCRIPT
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Presented by:
Mark Drow
David Eoff
DIESEL FUEL OIL SYSTEMS
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AGENDA
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MARK DROW
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DAVID EOFF
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ABOUT PREFERRED UTILITIES
• Preferred Utilities: Fuel Oil Handling
• Preferred Instruments: Boiler Controls
• W.N. Best: Combustion Systems
• Preferred Engineering: Nuclear Outage Support
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ABOVEGROUND VS. UNDERGROUND
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ABOVEGROUND OVERVIEW
UL142 UL2085
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UNDERGROUND OVERVIEW
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HYPOTHETICAL PROJECT EXAMPLE
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FUEL LOAD CALCS: START HERE
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TRICK QUESTION
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OTHER FUEL LOAD CONSIDERATIONS
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DAY TANKS
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DAY TANK SIZE
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MULTIPLE DAY TANKS
• If a pump set is supplying more than one day tank, a flow
control manifold (fill valve) will be required on each day tank.
• If any tank calls for oil, the pumps are energized and the
flow control manifold for that tank is opened.
• Fill valves usually have a manual bypass.
• Sometimes fill valves are motorized ball valves with
open/close limit switches.
Sidenote: A similar strategy may
be used when returning fuel from
day tanks to multiple bulk storage tanks…
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CONTROL STRATEGY OVERVIEW
Supply
Return
Containment
High
Pump stop
Pump Start
Low
Control Panel
Containment Leak Detector
• If a pump set is supplying more than one day tank, a flow control manifold (fill valve) will be required on each
day tank.
• If any tank calls for oil, the pumps are energized and the flow control manifold for that tank is opened.
• Fill valves usually have a manual bypass.
• Sometimes fill valves are motorized ball valves with open/close limit switches.
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DAY TANK CONTROLS
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LEAK DETECTION
LEAK DETECTION
• Required in tank interstitial spaces.
• Recommended in pump set leak basins.
• Required in containment piping.
• A good idea anywhere oil is likely to leak and accumulate.
Note: NFPA code is mute on how many leak detectors are required in containment piping.
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PUMPS
Pump Sizing Rule of Thumb:
4:1 ratio, or pumps running 25% of the time
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TYPICAL PIPING ARRANGEMENT
Main Oil Tank
Emerg. Gen.
with Rupture Basin
Day Tank
Pump
Supply
Return
Fill
Vent
Suction
GENERATOR
LOOP
PUMPS SIZED FOR
CONSUMPTION
PLUS SAFETY
FACTOR
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ALTERNATE PIPING ARRANGEMENT
Main Oil Tank
Emerg. Gen.
with Rupture Basin
Day Tank
Pump
Supply
Return
Fill
Vent
Suction
PUMPS SIZED FOR
PUMP RATE PLUS
SAFETY FACTOR
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VALVES – MOST COMMON
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VALVES – OTHERS
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PLC CONTROLS
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ELIMINATE PROBLEMS BEFORE THEY HAPPEN
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GEN FLOW VS. CONSUMPTION
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HOT AREAS
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COLD AREAS
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FUEL FILTRATION
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PIPE SIZING
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SUCTION PIPING
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VENT PIPING
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REMOTE FILL PORTS
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PUMC PIPE SIZING PROGRAM
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THANK YOU!