2.3.3
Connections to Fuel Oil Tanks
Provide the following connections:
a.
Goose-neck vent caps or caps conforming to MIL-C-19902.
b.
Fill lines with removable single strainer and locking fill boxes.
c.
A sounding connection, to permit entry of the gaging rod, with a
locking cap. Provide graduated gaging rod and calibration chart.
d.
Pump suction lines with internal vertical pipes [and foot valve]
extending to within 100 mm 4 inches of tank bottom.
e.
Fuel oil supply, return, fill and vent piping utilizing swing
joint elbows to allow for ample tank movement and pipe expansion.
Drain piping into tank when pump is shut-off.
f.
Flexible hose connections for vibration isolation of oil burning
equipment.
g.
On steel tanks weld a 300 by 300 by 6 mm 12 by 12 by 1/4 inch
steel striker plate under gage and fill lines.
h.
Nylon dielectric bushings on pipe connections to steel tanks.
i.
Ball float valves on vent lines to restrict flow into tank when
the tank reaches 90 percent full.
j.
Automatic high level alarm with setting of approximately 95
percent and 98 percent of tank capacity. Audible alarm shall
sound locally at tank, [and alarm signal shall be transmitted to
remote locations as indicated].
2.3.4
Monitoring System to Detect Fuel Oil and Water Leaks
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NOTE: Federal Register Part II Environmental
Protection Agency 40 CFR Parts 280 and 281 requires
a method of release detection for pressurized
underground fuel piping which is either direct
buried or in secondary containment.
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Provide an electrical or electronic
control center in accordance with
Section 13216 UNDERGROUND PETROLEUM
TANKS. Automatic line leak detection
system for pressurized piping shall
detect leaks of 3.20 milliliter per
second 3 gallons per hour at 69 kPa
10 pounds per square inch line pressure
within 1 hour.
[Vapor monitoring for direct buried piping shall include vapor sensors
located in monitoring wells as indicated. The vapor sensor shall monitor
the unsaturated zone of the monitoring well for hydrocarbons. The sensor
shall be UL listed and classified for NFPA 70 Class 1, Division 1, Group C
and D hazardous location].
[Groundwater monitoring for direct buried piping shall include liquid
sensors located in monitoring wells as indicated. The liquid sensor shall
monitor the liquid hydrocarbons floating in the ground water surface
SECTION 15192N
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