the logs. This response will recommend corrective
take daily meter readings on the panel and record them
actions to be taken, if required.
on the log. A quarterly check must be performed on the
shaft grounding assembly. A 24-month intervals, the
OUTPUT CHECK.-- A particularly significant
panel meters are calibrated according to PMS
value recorded on the log is the output check. The
requirements.
values recorded will range from practically zero to 1.0
volt, representing 100 percent current output. If the
values range between 0.3 and 0.5 volt, the system is
SUMMARY
operating at 30 to 50 percent capacity.
POWER SUPPLY.-- The daily current output is
In this chapter, you were introduced to the
recorded for each power supply. Ampere values may
fundamentals of cathodic protection systems, including
vary, depending on the power supply, maximum output,
their operation, logs, and maintenance. An
and current demand. Two capacities of power supplies
understanding of these systems will enable you to
are used-0 to 150 amperes and 0 to 300 amperes.
ensure that the ship's hull is maintained in a
noncorrosive condition at all times. Additional
ICCP Maintenance
information can be found in the manufacturer's
technical manuals or Naval Ships' Technical Manual,
The ICCP maintenance is performed according to
chapter 633, "Cathodic Protection. "
the Planned Maintenance System (PMS). You should
11-14
