TM 55-1925-284-14&P
0006 00
Table 1. Valve Alignment for MSD Operation Under Unusual Conditions (continued)
Item Number
Valve
Function
Position During Operation
(Figure 3)
Number
Under Unusual Conditions
26
SD-10
SEWAGE SHORE CONN PORT
CLOSED
27
SD-11
SEWAGE SHORE CONN STBD
CLOSED
28
SD-12
MSD OVERBOARD DISCH PMP DISCH
CLOSED
29
SD-13
SEWAGE OVERBOARD DISCHARGE
CLOSED
30
SD-19
SEW PMP NO. 1 DISCH PRESS
CLOSED
GAGE ISLN
31
SD-20
SEW PMP NO. 2 DISCH PRESS
CLOSED
GAGE ISLN
WATER CLOSET DISCHARGE TO OVERBOARD
NOTE
There are local, national, and international restrictions on when and where the MSD can
be operated. Comply with federal, state, U.S. Coast Guard, and all other pollution dis-
charge regulations.
1. Align the valves for the MSD to operate under unusual conditions as specified in figure 3 and table 1.
2. OPEN valve SD-2 SEWAGE OVERBOARD DISCHARGE (figure 3, item 18).
3. Verify that valve SD-3 SEWAGE DRAIN TO HOLDING TANK (figure 3, item 19) is CLOSED.
NOTE
With SD-2 SEWAGE OVERBOARD DISCHARGE and SD-13 SEWAGE OVERBOARD
DISCHARGE valves OPEN, sewage will flow directly overboard, bypassing the sewage
holding tank and the MSD.
4. OPEN SD-13 SEWAGE OVERBOARD DISCHARGE valve (figure 3, item 29).
5. Return the MSD to operation under usual conditions (WP 0005 00) as soon as the emergency or equipment
failure has been corrected.
BLOWER FAILURE
1. Secure the blower by pressing the STOP button (figure 1, item 1) on the MSD control panel (figure 1, item 2)
and set to OFF the MSD DISCHARGE PUMP AND BLOWER circuit breaker (figure 2, item 1) in 440V power
panel No. 4.
2. OPEN valves CA-80 COV-LP AIR (figure 3, item 1) and CA-81 LP AIR SHUTOFF (figure 3, item 2).
0006 00-4
