specification for inclusion in the project
specification.
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For [below ground] [partially above and partially below ground] [above
ground] metal separators, provide cathodic protection with test stations as
specified in Section [13110N CATHODIC PROTECTION BY GALVANIC ANODES] [13111N
CATHODIC PROTECTION BY IMPRESSED CURRENT] in addition to the protective
coating.
2.1.2
Substitutions
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NOTE: Designer shall check manufacturer's
literature to assure construction material option
selected is capable of withstanding anticipated
forces and moments for the size of separator
designed. Navy has experienced some problems with
the fiberglass covered plywood and timber units when
the fiberglass cracks; due to water seepage, wood
has deteriorated causing structural failure.
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NOTE: Insert suitable material if carbon steel is
not acceptable. Consult manufacturers' data.
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Separators constructed of [reinforced fiberglass][or] [reinforced glass
fiber resin laminates over a rigid urethane foam core] may be provided in
lieu of carbon steel [_____]. Provide fiber glass separator with lifting
straps. Glass fiber reinforced plastic weirs may be accepted as a suitable
weir and baffle material provided that necessary requirements for anchorage
of these items include provisions for contraction and expansion. Surfaces
shall be seamless, chemically resistant to oil-in-water mixture, and
resistant to ultraviolet deterioration.
2.1.3
External Surfaces
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NOTE: Include bracketed text as appropriate for
below ground or partially below ground installations.
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External surfaces and appurtenances shall be resistant to corrosion from
the in situ soil, [backfill material,] [groundwater,] [and surface runoff]
[surface runoff and the surrounding atmosphere] [soil pH] [soil
2.1.4
Internal Surfaces
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NOTE: The solvents in oil allow some plastic
composite surfaces to absorb the oil. Once the
plastic surfaces become saturated with oil they can
become sticky. This is especially critical with
plates since solids will tend not to slide down and
eventually will clog the area between the parallel
plates, resulting in increased maintenance.
SECTION 11311
Page 11
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