Project Name
Project Number
TEMF
Statement of Work
UFC 4-214-02, 24 Jul 03
The valve shall be constructed of the same material as the fill tube. The valve shall have two
stages of shutoff. In the first stage, the valve shall restrict the flow of fuel oil into the tank to
approximately 0.315 L/s when the liquid level rises above 95 percent of the tank capacity. In
the second stage, the valve shall completely stop the flow of fuel oil into the tank when the liquid
level rises above 98 percent of the tank capacity.
4-17.4.3 Tank screening. Provide sight screening for the tank to reduce the visual impact of
the fuel oil storage tank. Visual screening may be vegetation or fencing, in compliance with the
local standards. [Design District shall ensure that aboveground fuel oil storage tanks are
suitably screened from view. The requirements of this paragraph may be modified to suit local
requirements.]
4-18
WASTE OIL/ANTIFREEZE STORAGE. [Insert "DELETED" if not applicable and
delete remainder of text in all paragraphs.] Waste oil and antifreeze storage tanks shall be
installed to temporarily hold fluids for disposal offsite. Storage shall be designed in accordance
with local codes, installation requirements, NFPA 30, and NFPA 31, whichever are more
stringent.
4-18.1
Tank storage. Separate tanks shall be provided for waste oil and antifreeze.
4-18.1.1 Aboveground tanks. Storage tanks shall be aboveground, double wall type with leak
detection monitoring. Tank containment shall comply with applicable NFPA, EPA, and local
code requirements. Provide concrete pads as required by code or as recommended by the tank
manufacturer.
4-18.1.2 [Underground tanks. [Underground tanks are not recommended and should be
avoided.] Storage tanks installed below grade shall be double-walled type constructed using
fiberglass or steel, and installed in accordance with the manufacturer's recommendations. The
top of the tank shall be at least 0.6 m below finished grade. Fiberglass tanks shall be
constructed in accordance with UL 1316. Steel tanks shall be Type II, constructed in
accordance with UL 58, with an STI-P3 coating and guarantee except that the cathodic
protection system shall be based on protecting 5 percent of the tank's metal surface. Tanks
shall be provided with the necessary fill, vent, gauge, hatch, and suction connections.]
4-18.1.3 Leak detection system. A continuous surveillance leak detection system suitable for
operation in an NFPA 70, Class 1, Division 1, Group D environment shall be provided to monitor
the leak containment space between the interior and exterior walls of double-wall tanks. The
system shall detect leakage into the containment space electronically or by monitoring
interstitial pressure or liquid level variations. Liquids used in the containment space for steel
tanks shall have a corrosion inhibitor. Liquids subject to freezing conditions shall contain an
antifreeze solution. The leak detection system shall be compatible with the tank furnished.
Instructions and equipment required for calibration of the leak detection system and
manufacturer's recommended calibration maintenance schedule shall be provided.
4-18.2
Special requirements. [Research local requirements for waste storage systems
installation and either add or delete items from this subparagraph.]
4-18.2.1 [Spill containment fill. Underground tank fill connection shall be provided in a spill
container of 11.4 L capacity minimum. Contained spills shall be drained into the storage tank
by means of a quick-acting drain valve.]
4-18.2.2 Overfill prevention valve. The overfill prevention valve shall be placed within the tank
interior and be an integral part of the fill tube. The valve shall be a float actuated shut-off valve.
The valve shall be constructed of the same material as the fill tube. The valve shall have two
stages of shutoff. In the first stage, the valve shall restrict the flow of fuel oil into the tank to
approximately 0.315 L/s when the liquid level rises above 95 percent of the tank capacity. In the
SOW-61
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