CHAPTER 3 OPERATING INSTRUCTIONS
Section I. Operating controls and indicators
3-1 Operating controls and indicators. Operating controls and indicators consist of liquid level indicators, a transfer
pump motor controller, switches, and operating valves. Visual liquid level indicators (Figure 3-1) are mounted on each of
the two fuel storage tanks and the day tank. The EMS (TM 55-1930-20914&P-11) continuously monitors fuel oil levels in
the storage tanks through a sensor mounted inside each tank. When a fuel oil storage tank is full, FO LEVEL HIGH
indicator on the EMS video monitor's generators display (Figure 3-2) lights up. This condition also triggers an audible
alarm and a flashing strobe light to warn crew to stop filling the tank. When day tank is full, a high level switch on the
liquid level indicator (Figure 3-1) stops transfer pump. Transfer pump motor controller is shown in Figure 3-3. Location
of fuel oil system valves is shown in Figure 3-4. Identification, location and function of operating valves are in Table 3-1.
Section II. Prestart procedures
3-2 Prestart procedures. Before performing any fuel oil system operation, check system components for operating
condition and perform before operation checks in Chapter 2, TM 55-1930-209 14&P-19. In addition know how the EMS
monitors the fuel oil system and how to operate the EMS (TM 55-1930-209-14&P-11).
Section III. Operating procedures
3-3 Operating procedures. Normal fuel oil system procedures include the following:
Perform during operation checks In Appendix C as
Filling both fuel oil storage tanks at same time or filling either port or starboard tank (see paragraph 3-3.1).
Transferring fuel oil to day tank from both storage tanks or from either port or starboard tank (see paragraph 3-
Providing fuel oil to diesel engines from day tank (see paragraph 3-3.3).
Providing fuel oil to workboat (see paragraph 3-3.4).
Transferring fuel oil from storage tank to storage tank (see paragraph 3-3.5).
Draining day tank to storage tanks or sludge tank (see paragraph 3-3.6).
Draining storage tanks to off-barge facility (see paragraph 3-3.7).
· During fuel oil transfer operations, neither open flame nor smoking is permitted within 10 feet of
the operation. Only minimum number of personnel necessary to conduct fueling operation is
permitted in the area.
· Observe all safety precautions during fuel oil transfer operations. Make every effort to prevent
leaks or spills and clean these immediately.