C 200 degrees F liquids. Motors shall be [120] [240] [_____] volts, 60 Hz,
single phase. [Two sump pumps in a duplex arrangement shall be provided as
indicated. An automatic alternating lead-lag controller shall be
furnished.] All controllers, water level switches, and electrical
connections shall be suitable for service at 100 percent humidity, at 93
degrees C 200 degrees F temperature, and occasional water submersion. The
sump pumps automatic control switches shall have demonstrated 200,000
cycles at 93 degrees C 200 degrees F and 100 percent relative humidity and
shall withstand total submersion in water at 93 degrees C 200 degrees F.
Another switch shall be provided to indicate high water level, and shall be
connected to an emergency warning light mounted on or adjacent to the valve
manhole as indicated. This high water level alarm shall be set at a level
which is below the bottom of any pipe in the valve manhole. Auxiliary
contacts in a separate junction box shall be provided to permit connection
to a [future] Energy Monitoring and Control System (EMCS) for monitoring
the operation of each pump motor and the high water level alarm system.
2.12.2
Drainers
Provide automatic type drainers to operate on 862 kPa (gage) 125 psig steam
supply. The drainer shall operate when the water level rises sufficiently
in the sump, the float shall rise and open the steam control valve to admit
steam to the drainer, which in turn shall pump the water from the sump.
When the water level is lowered by the pumping action, the float shall
lower and close the steam valve to stop the pumping action until water
again gathers in the sump. Provide each drainer with controls to
accomplish the above sequence of operation. The automatic float-operated
steam valve shall be designed to prevent dead centering under field
conditions and to lengthen the life of the valve seat. The valve shall
have a high grade, renewable composition disc and a stainless steel or
hard, noncorrosive bronze renewable seat inserted in the valve body. The
drainer shall be constructed of corrosion-resistant copper and bronze.
Piping from manhole drainers shall be ASTM A 53/A 53M, Weight Class XS
(Extra Strong), hot-dip galvanized steel pipe with ASME B16.11 or ASME B16.3,
Class 300, hot-dip galvanized threaded fittings. Provide a steam pressure
regulating vaalve assembly for manhole drainers for operation on steam
system above 862 kPa (gage) 125 psig.
2.13
CONCRETE VALVE MANHOLES AND ACCESSORIES
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NOTE: If the referenced sections are not to be
included in the project specifications, applicable
paragraphs from the referenced sections must be
incorporated into this specification. The designer
is also advised that, for Army projects, Section
02300 EARTHWORK, and if electrically operated sump
pumps are installed, either Section 16370A
ELECTRICAL DISTRIBUTION SYSTEM, AERIAL or Section
16375A ELECTRICAL DISTRIBUTION SYSTEM, UNDERGROUND,
or applicable portions of the above specifications,
must be included as part of the project
specifications. For Navy jobs, Section 02302N
EXCAVATION, BACKFILLING, AND COMPACTING FOR
UTILITIES, and if electrically operated sump pumps
are installed, either Section 16301N OVERHEAD
TRANSMISSION AND DISTRIBUTION or Section 16302N
UNDERGROUND TRANSMISSION AND DISTRIBUTION, or
applicable portions of the above specifications must
SECTION 02560
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