The minimum instrumentation, alarms, and safety controls required for specific types of systems are listed in Table 62.35-50.
Table 62.35-50--Minimum System Monitoring and Safety Control Requirements for Specific Systems (Note 1)----------------------------------------------------------------------------------------------------------------
System Service Instrumentation Alarm Safety control Notes----------------------------------------------------------------------------------------------------------------Main (Propulsion) boiler...... (\1\)............ (\1\)............ (\1\)........... ................ (2)
Supply casing and ................. Fire............
uptakes.
Burner flame..... Status........... Failure......... Burner auto trip (3)
Burner seating... ................. Failure......... ......ditto..... (3)
Trial for Status........... Failure......... ......ditto.....
ignition.
Control power.... Available Failure (low)... ......ditto..... (3)
(pressure).
................. ................. ................ Manual trip..... (3)
Burner valve..... Open/closed......
Low fire Status...........
interlock.
Program control Status...........
interlock.Main (Propulsion steam) (\2\)............ (\2\)............ (\2\)........... ................ (4, 5)
turbine.
................. ................. ................ Manual trip.....Main propulsion, diesel....... (\1\)............ (\1\)............ (\1\)........... ................ (4, 5)
................. ................. ................ Manual trip.....Main propulsion, remote ................. ................. Failure......... ......ditto.....
control.
Auto safety trip ................. Activated.......
override.
Starting power... Pressure Low............. Limit........... (2)
(voltage).
Location in Status........... Override........ ................ (6)
control.
Shaft speed/ (\3\)............ (\3\)........... (\3\)...........
direction/pitch.
Clutch fluid..... Pressure......... Low.............Main propulsion, electric..... (\4\)............ (\4\)............ (\4\)........... (\4\)........... (7)Main propulsion, shafting..... Stern tube oil ................. Low.............
tank level.
Line shaft Temperature...... High............
bearing.
................. Forced Low.............
lubrication
Pressure.Main propulsion, controllable Hydraulic oil.... Pressure......... High, Low.......
pitch propeller.
................. Temperature...... High............Generators.................... Ship service..... (\1\)............ (\1\)...........
................. Starting pressure/ Low.............
voltage.
................. ................. Tripped.........
Emergency........ (\5\)............ (\5\)........... (\5\)...........
Turbogenerator... (\1 6\).......... (\1 6\)......... (\6\)...........
................. ................. ................ Manual trip.....
Diesel........... (\1 7\).......... (\1 7\)......... (\7\)........... (5)
................. ................. ................ Manual trip.....Auxiliary boiler.............. ................. Run.............. Trip............ ................ (12)Gas turbine................... (\8\)............ (\8\)............ (\8\)........... (\8\)........... (5)Engines and turbines.......... Jacking/turning Engaged.......... ................ ................ (8)
gear.Fuel oil...................... (\9\)............ (\9\)............ (\9\)...........
Remote/auto fill ................. High............ Auto trip or
level. overflow
arrangement.
Hi. press. ................. High............
leakage level.Bilge......................... Pump remote Run..............
control.
Pump auto control Run.............. Excessive
operations.
Level............ ................. High/location...Machinery space CL.3 W.T. ................. Open/closed......
doors.Fire detection................ Machinery spaces. ................. Space on fire... ................ (9)Fire main..................... ................. Pressure......... Low.............Personnel..................... Deadman.......... ................. Fail to ................ (10)
acknowledge.General, control and alarm Power supply..... Available Failure (low)...
systems. (pressure).
System function.. ................. Failure......... ................ (11)
Console air ................. Failure.........
conditioning.
Built in test Active...........
equipment.
Sequential Activated........
interlock.
Safety control... ................. Activated....... Auto trip/limit. (11)
Redundant auxiliary, system, ................. Status........... Auto transfer...
power supply.----------------------------------------------------------------------------------------------------------------\1\ See the ABS Steel Vessel Rules (incorporated by reference; see 46 CFR 62.05-1) Part 4-9-4, tables 7A and 8.\2\ See ABS Steel Vessel Rules Part 4-9-4, tables 7A and 8.\3\ See Sec. 113.37 of this chapter.\4\ See subparts 111.33 and 111.35 of this chapter.\5\ See subparts 112.45 and 112.50 of this chapter.\6\ See Sec. 111.12-1(c) of this chapter.\7\ See Sec. 111.12-1 (b), (c) of this chapter.\8\ See ABS Steel Vessel Rules Part 4-9-4, Table 8; and 46 CFR 58.10-15(f).\9\ See ABS Steel Vessel Rules Part 4-9-4, tables 7A and 8.
Notes on Table 62.35-50:
1. The monitoring and controls listed in this table are applicable if the system listed is provided or required.
2. Safety limit controls must be provided in navigating bridge primary propulsion control systems. See Sec. 62.35-5(c).
3. Safety trip controls and alarms must be provided for all main boilers, regardless of mode of operation. See Sec. 62.35-20(a).
4. Loss of forced lubrication safety trip controls must be provided, as applicable.
5. Override of overspeed and loss of forced lubrication pressure safety trip controls must not be provided. See Sec. 62.35-5(e)(2).
6. Transfer interlocks must be provided.
7. Semiconductor controlled rectifiers must have current limit controls.
8. Interlocks must be provided. See Sec. 62.25-5(a).
9. Main and remote control stations, including the navigational bridge, must provide visual and audible alarms in the event of a fire in the main machinery space.
10. See Sec. 62.50-20(b)(1).
11. Alarms and controls must be failsafe. See Sec. 62.30-1.
12. Vital auxiliary boilers only. Also see part 63. [CGD 81-030, 53 FR 17838, May 18, 1988; 53 FR 19090, May 26, 1988, as amended by USCG-2000-7790, 65 FR 58461, Sept. 29, 2000; USCG-2003-16630, 73 FR 65190, Oct. 31, 2008]
Subpart 62.50_Automated Self-propelled Vessel Manning