Q19.
What is the maximum pounds of pressure a
CAUTION
soft patch can resist?
D o N OT u s e t h e E m e r g e n c y
1.
500 pounds
Water-Activated Repair Patch (EWARP) on
potable water inlet lines or fuel systems.
2.
225 pounds
3.
150 pounds
4.
125 pounds
CASUALTY POWER SYSTEM
Learning Objective: Recall the purpose of the casualty
power system and describe the components of the
system.
The casualty power system (fig. 8-25) is one of the
most important shipboard damage control systems.
DCf0823 c
The system is a simple electrical distribution system. It
Figure 8-23. Emergency Water-Activated Repair Patch
(EWARP).
is used to maintain a source of electrical power for the
most vital machinery and equipment needed to keep
the ship afloat or to get the ship out of a danger area.
The casualty power system is intended to provide
power during real emergencies only. It must NOT be
2
1
used as a means of making temporary routine repairs.
Remove all pressure from pipe being repaired
With file, rough score
around pipe at leak site and
2" on either side of leak.
3
NOTE:
Remove file shavings with
EYE PROTECTION
clean rag.
AND LATEX
RISER
PORTABLE CABLE
GLOVES SHALL BE
R.T.
TERMINAL
WORN WHEN
4
WORKING WITH
BULKHEAD
EWARP!
TERMINAL
FRAME 105
FRAME 120
FRAME 90
2ND DECK
Remove roll of EWARP from pouch (work rapidly to
avoid EWARP from solidifying) and immerse roll in
water for 20 seconds.
Remove roll from water
WATERTIGHT
and unroll approximately
BULKHEAD
FIXED CABLE
AFT
FWD
4" and center tape over
5
the leak.
6
3RD DECK
C.T.
LEGEND
C.T.
BULKHEAD
Wrap tape around pipe and pull firmly as wrap.
Application complete.
TERMINAL
SWITCH-
POWER
DCf0824
BOARD
RISER
PANEL
TERMINAL
CONNECTION
TERMINAL
LOAD
R.T.
SOURCE OF SUPPLY
DCf0825
Figure 8-24. Steps for using EWARP.
Figure 8-25. Casualty power run.
REVIEW QUESTIONS
A casualty power system consists of the following
items:
Q18.
What is the maximum pounds of pressure a
Portable cables stowed in racks throughout the
jubilee patch can resist?
ship
1.
100 pounds
Bulkhead terminals for carrying the circuit
2.
125 pounds
through bulkheads without breaking the
watertight integrity of the ship
3.
150 pounds
Risers between decks
4.
175 pounds
8-20