15 August 2002
Control Voltage. Control voltage for all electrical equipment should be
either 115 or 230 volts.
Control Panel. Assemble pushbuttons and indicating lights for all pumps,
gates, and valves (in addition to the synchronous position indicator for each valve and
the drydock water level indicator) on a steel control panel or benchboard type structure.
Provide motor control on or adjacent to the starting equipment for each motor.
. Provide vaporproof lamp fixtures, equipped with reflectors.
Provide receptacle outlets at strategic locations for use during repair and inspection.
Telephone. Provide telephone outlets at or near the control panels.
Installation. All electrical installation should be in accordance with the
requirements of NFPA Standard No. 70, National Electrical Code. Use rigid steel type
conduit. Use cables in accordance with the latest revisions of LANTNAVFACENGCOM
UFGS-L-16303, Underground Electrical Work, and Uniform Facilities Guide
Specifications UFGS-16000 series.
Dock Services. Services are required as described in sections 8-5.7.1
through 8-5.7.5, as specified.
Ship Services (Hotel). Power for ship services is supplied to provide the
living requirements of the ship's crew, and includes loads such as lighting, cooking,
pumps, fans, and other equipment. Current characteristics of the system must be the
same as that of the ship supplied. Power is taken to the ship with portable cables, and
connected to its electrical system through a connection box at one of the service outlets
approximately midway of the vessel.
Temporary Lighting and Power. Design temporary lighting and power
systems to supply 120-volt, 3-phase power for portable tools, lights, blowers, and other
equipment used aboard the ship for repair. Supply 25 percent of the total power
required from a permanent 120-volt, 3-phase ungrounded system, and connected to the
460-volt service outlets.
Welding. Provide welding service by both single and multi-operator
welding sets. The multi-operator sets are generally placed on shore, and single
operator sets are placed on board ship or, if space permits, on shore. Large size
welding sets are motor driven. The small sizes are either motor generator or static
types. All types should be 460-volt operated. The base welding power should provide
75 percent of the total demand, and the single operator placed either aboard ship or on
shore should supply 25 percent of the total demand.
Distribution. When space is available, use welding manholes for the
distribution of welding power. They should be located opposite each service outlet
group beyond the crane tracks. The purpose of the manholes is to provide means of
connecting the portable welders that are to supply power to adjacent work areas and to