Amendment 6: Drawing M-503 (Revised)

FLOW DIAGRAM SYMBOLS LIST

A

COMPRESSED AIR

PRESSURE REDUCING VALVE (LIQUID/GAS)

D

DRAIN

"WYE" - STRAINER

FUEL OIL FILL

"WYE" - STRAINER W/SHUTOFF VALVE

AND HOSE CONNECTION WITH CAP

FLEXIBLE CONNECTION

FUEL OIL OVERFILL PREVENTION

VALVE, TYPICAL.

WL

ILD

FUEL OIL RETURN

FOS

FUEL OIL SUPPLY

HPC

HIGH-PRESSURE CONDENSATE

HPS

HIGH-PRESSURE STEAM

REDUCER - REFERENCE SPECIFICATION

FOR CONCENTRIC/ECCENTRIC AND FOT/FOB

PITCH PIPE IN DIRECTION

METER

1 1/4"FOR

3"FOR

PRESSURE GAUGE (FURNISHED WITH BALL VALVE)

UNION/FLANGE

SUCTION DIFFUSER WITH SUPPORT FOOT

AUTOMATIC AIR VENT

SHUTOFF VALVE NORMALLY OPEN

SHUTOFF VALVE NORMALLY CLOSED

3"FOR

PRESSURE/TEMPERATURE TEST PLUG

EXTERNAL EMERGENCY VALVE

SYMBOL:

DESCRIPTION:

A

TO/FROM DEDICATED ELECTRIC FUEL

OIL HEATING SYSTEM (1 SYSTEM PER

TANK), TYPICAL. REFER TO C1/M503.

TK-1

FOR

DIRECTION OF FLOW IN PIPE

TANK CONTROLLER LIST

HL

3"FOF

FOF

FL

DESCRIPTION:

HH

A

1 1/4"FOS

SYMBOL:

3"FOF

FL

FLUID LEVEL TRANSMITTER

HH

HIGH-HIGH LEVEL ALARM SWITCH

HL

HIGH LEVEL SWITCH

ILD

INTERSTITIAL LEAK DETECTOR

WL

WATER LEVEL TRANSMITTER

FUEL OIL PIPING THAT DOES NOT CIRCULATE THROUGH FUEL

OIL HEATER CABINETS SHALL BE INSULATED AND HEAT

TRACED, TYPICAL. (REPRESENTED BY DOUBLE-DASHED LINES.)

MANUAL AIR VENT W/ BALL VALVE

FP-1

THROTTLING VALVE

0.5
0.5

DRAIN WITH HOSE CONNECTION, CAP &

BALL VALVE

AUTOMATIC BALANCING VALVE (NO. INDICATES GPM)

BALANCING VALVE (NO. INDICATES GPM)

TEMPERATURE SENSOR WITH WELL

CONTROL VALVE (THREE-WAY)

2"FOR

THERMOMETER WITH WELL (FILLED TYPE)

3/4" NORMALLY CLOSED MANUAL DRAIN

VALVE TO ALLOW FOR SERVICING PIPE

COMPONENTS, TYPICAL.

CONTROL VALVE (TWO-WAY)

SOLENOID/TWO POSITION VALVE

B

AUTOMATIC FUEL

OIL POLISHER.
REFER TO 2/MP-605.

3"FOS

FLOW METER

2"FOS

B

FL

CHECK VALVE

VACUUM SWITCH

FL

2"FOR

HH

SAFETY/RELIEF VALVE

HH
WL

PRESSURE TRANSMITTER

WL

HL

HL
2"FOS

ILD

1 1/4"FOR

C

PUMP

RUNNING

FOH-#

R

HIGH

HIGH

VACUUM PRESSURE

ALARM

RESET

HAND-OFFAUTO

R

G

BASIN

LEAK

HEATER

ENERGIZED

2"FOS

3"FOF

3"FOR

3"FOS

WATER LEVEL

TRANSMITTER

C

3"FOS

INDICATORS AND SWITCHES MOUNTED

ON FUEL OIL HEATER PANEL FACE

INSULATED FOS&R PIPING TO/FROM ABOVEGROUND

FUEL OIL STORAGE TANK, TYPICAL OF 5.

FUEL LEVEL

TRANSMITTER

3"FOF

SYSTEM

POWER

R

1 1/4"FOR

C1

G

90% & 95% LEVEL

SWITCHES

3"FOR

E-STOP

1 1/4"FOS

THERMOSTAT PROVIDE BY OIL

HEATER MANUFACTURER.
460V/3Ø

POWER

G

1 1/4"FOR

1 1/4"FOR

1 1/4"FOR

3"FOF

H. O. A.

2"FOR

ELECTRIC OIL

HEATER

TK-3

1 1/4"FOR

0-100
PSI

3"FOR

FOP-#

30"HG-0- (10 GPM)

60 PSI

3"FOR

PANEL LAMPS SHALL BE:

•
18mm LED WITH PUSH-TO-TEST FUNCTION.
•

G - GREEN

•

R - RED

DASHED LINES REPRESENT A UL LISTED TYPE 304