noh dieselfuel drow

8/18/2019 NOH DieselFuel Drow

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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 flowcontrol manifold (fill valve) will be required on each day tank.

• If any tank calls for oil, the pumps are energized and theflow control manifold for that tank is opened.

• Fill valves usually have a manual bypass.

• Sometimes fill valves are motorized ball valves withopen/close limit switches.

Sidenote: A similar strategy maybe used when returning fuel fromday tanks to multiple bulk storage

tanks…


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CONTROL STRATEGY OVERVIEW

Supply

ReturnContainment

High

Pump stop

Pump Star t

Low

Control Panel

ContainmentLeak Detector

• If a pump set is supplying more than one day tank, a flow control manifold (fill valve) will be required on eachday 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 RuptureBasin

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 RuptureBasin

Day Tank

Pump

Supply

Return

Fill

Vent

Suction

PUMPS SIZED FOR

PUMP RATE PLUS

SAFETY FACTOR


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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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REMOTE FILL PORTS


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PUMC PIPE SIZING PROGRAM


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THANK YOU!

noh dieselfuel drow

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