Class I - Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II - Leakage of fluid great enough to form drops, but not enough to cause drops to drip from the
Item being checked/inspected.
Class III - Leakage of fluid great enough to form drops that fall from the item being
Equipment operation is allowable with minor leakages (Class I or II). However, the
fluid level or operating pressure of the item being checked/inspected must be
considered. When in doubt, notify the shift leader or bargemaster.
When operating with Class I or Class II leaks, continue to check fluid levels as
required by PMCS and operating instructions.
The following fuel and hazardous material leakage procedures apply for any fuel, chemical, or bilge system.
Class I, II or III leaks or seepage occurring In a fuel, chemical, or bilge container,
tank, line, piping, or valve can cause fire or health hazards.
If any leaks or seepage from a fuel, chemical, or bilge container, tank, or fluid line is detected, it must
be immediately reported to the shift leader or bargemaster for corrective action.
To prevent combustible or toxic fumes from collecting or contaminated material from spilling, exercise
extreme caution after detecting leaks or seepage of flammable or hazardous material.
Continuous operation. When equipment must be kept in continuous operation for extended periods of time, check
and service only those items that can be checked and serviced without disturbing operations. Perform complete
checks and services when the equipment can be shut down.
Maintenance log. Always record the time and date of PMCS, any deficiencies noted, and corrective action taken
in the PMCS log book.
C-2 Major components. The seawater system consists of the Reverse Osmosis Water Purification Unit (ROWPU) and
ballast seawater supply, the air conditioner cooling and chlorination unit seawater supply, and the diesel engine generator
cooling and seawater supply. System components include; seachests, seawater strainers, pressure gauges and
regulators, seawater filters, pumps, water supply, ballast and chemical tanks, piping, valves, and associated electrical
circuitry and control panels. Tables NO TAG through NO TAG list the major components of the seawater system, their
basic function and location on the barge.
C-3 Seawater system description. The seawater system supplies seawater to the ROWPUs for processing, to the air
conditioning unit for cooling, to the ballast tank (Figures C-1 and C-2) for barge trimming, to the chlorination unit for
priming and cooling (Figure C-3 and C-4), and to the diesel generators (Figures C-5 and C-6) for cooling. There are three
sources for supplying seawater; a forward seachest in void 2 starboard, a shell penetration in void 2 starboard and an aft
seachest in void 4 port. The seachest in void 2 starboard supplies sufficient seawater to ROWPUs for processing when
the barge is anchored in 15 feet or more of water. When anchored in from 10 to 15 feet of water, the starboard shell
intake supplies sufficient seawater to ROWPUs for processing. When the barge is anchored or is pierside, seachest in
void 2 starboard can be used to supply seawater for the air conditioner and the chlorination unit. Also, when the barge is
anchored or pierside, the seachest in void 4 port can be used to supply seawater for cooling diesel generators.