12 May 2003
Including change 1, 19 January 2007
telecommunications outlet assembly. This conduit must be dedicated for
communication circuits that cannot use the telephone system.
Cable Television. Provide a conduit system (from the manhole at the
head of the pier to each telecommunications outlet assembly) to support cable
television requirements. Unless instructed otherwise, the cable television system will be
provided by a commercial vendor. The designer must coordinate with the vendor and
provide a complete raceway system.
Alarm and Signal Circuits. Provide two 31.7 mm (1-1/4 in) conduits
(from the manhole at the head of the pier to each telecommunications outlet assembly)
to serve alarm and signal circuits that cannot use the telephone system. Provide all
conductors to serve these systems unless instructed otherwise. Coordinate with the
Activity and the cognizant NAVFAC EFD/EFA OR USACE DISTRICT.
PIER POWER METERING SYSTEMS. Naval ships connected to shore
power utilize a large percentage of the Navy's infrastructure electricity. Many bases are
now requiring the electricity usage to be measured and recorded. Since multiple circuits
are normally used to provide the required capacity to the ships, often in a "nested"
configuration, standard metering/ monitoring equipment may not be appropriate. There
are however, commercial and government developed systems, including hardware and
software, that are available. Coordinate with the cognizant EFD / EFA to determine if
the Activity has a desired or required system that must be utilized.
Pier Power Monitoring System (PPMS). One of the power
measurement systems available has been developed by the Naval Facilities
Engineering Service Center (NFESC). The system is defined as the PPMS and
consists of specialized embedded computer circuit boards, embedded software, and
personal computer (PC) software that enable the Activity to measure, record, and study
the electricity consumption and usage patterns of the connected ships. The PPMS was
developed to be cost effective and to be easily installed. It involves the simple
utilization of a conventional utility metering system. Typically, each monitored electrical
outlet assembly will have one set of circuit boards. Battery backup features ensure that
no data or operating software is lost when electrical power is disconnected. The data
are sent to a central PC station. The PC can program the circuit boards and retrieve
data. Parameters available on the PC are megawatt-hours and instantaneous values of
amps, volts, power factor, and megawatts. Time-of-use (TOU) data are also available
for the present 24-hour period. The PPMS correctly identifies the receptacles allocated
to each ship and the total power consumed. Both the ship (customer) and the Activity
(provider) can easily track shore supplied ship electricity. Software can be easily
tailored to send the data directly from the PPMS to a master data collection and billing
system. By providing complete energy use pattern information and consumption data,
the PPMS enables Navy managers to educate, monitor, and encourage energy
conservation for ships using shore supplied electricity. An operating PPMS
demonstration system is presently installed on Pier 1 at Naval Station San Diego, CA.