62.35-50—Tabulated monitoring and safety control requirements for specific systems.

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 uptakes		Fire
	Burner flame	Status	Failure	Burner auto trip	(3)
	Burner seating		Failure	......ditto	(3)
	Trial for ignition	Status	Failure	......ditto
	Control power	Available (pressure)	Failure (low)	......ditto	(3)
				Manual trip	(3)
	Burner valve	Open/closed
	Low fire interlock	Status
	Program control interlock	Status
Main (Propulsion steam) turbine	(2)	(2)	(2)		(4, 5)
				Manual trip
Main propulsion, diesel	(1)	(1)	(1)		(4, 5)
				Manual trip
Main propulsion, remote control			Failure	......ditto
	Auto safety trip override		Activated
	Starting power	Pressure (voltage)	Low	Limit	(2)
	Location in control	Status	Override		(6)
	Shaft speed/direction/pitch	(3)	(3)	(3)
	Clutch fluid	Pressure	Low
Main propulsion, electric	(4)	(4)	(4)	(4)	(7)
Main propulsion, shafting	Stern tube oil tank level		Low
	Line shaft bearing	Temperature	High
		Forced lubrication Pressure	Low
Code of Federal Regulations 310
Main propulsion, controllable pitch propeller	Hydraulic oil	Pressure	High, Low
		Temperature	High
Generators	Ship service	(1)	(1)
		Starting pressure/voltage	Low
			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 gear	Engaged			(8)
Fuel oil	(9)	(9)	(9)
	Remote/auto fill level		High	Auto trip or overflow arrangement
	Hi. press. leakage level		High
Bilge	Pump remote control	Run
	Pump auto control	Run	Excessive operations
	Level		High/location
Machinery space CL.3 W.T. doors		Open/closed
Fire detection	Machinery spaces		Space on fire		(9)
Fire main		Pressure	Low
Personnel	Deadman		Fail to acknowledge		(10)
General, control and alarm systems	Power supply	Available (pressure)	Failure (low)
	System function		Failure		(11)
	Console air conditioning		Failure
	Built in test equipment	Active
	Sequential interlock	Activated
	Safety control		Activated	Auto trip/limit	(11)
Redundant auxiliary, system, power supply		Status	Auto transfer
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 § 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 § 111.12-1(c) of this chapter.
7 See § 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 § 62.35-5(c).

3. Safety trip controls and alarms must be provided for all main boilers, regardless of mode of operation. See § 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 § 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 § 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 § 62.50-20(b)(1).

11. Alarms and controls must be failsafe. See § 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]

CFR

62.35-50—Tabulated monitoring and safety control requirements for specific systems.