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Federal Register / Vol. 86, No. 199 / Tuesday, October 19, 2021 / Proposed Rules
TABLE 62.3550MINIMUM SYSTEM MONITORING AND SAFETY CONTROL REQUIREMENTS FOR SPECIFIC SYSTEMS
Continued Note 1
Service
Instrumentation
Alarm
Safety control
Fire detection
Fire main
Personnel
General, control and alarm systems.

Machinery spaces
Deadman
Power supply
System function
Console air conditioning
Built in test equipment
Sequential interlock
Safety control

Pressure
Available pressure

Active.
Activated.
Status

Space on fire
Low.
Fail to acknowledge
Failure low.
Failure
Failure.

h.

i.

Auto trip/limit

j.

Redundant auxiliary, system, power supply.
1 See 2 See 3 See 4 See 5 See 6 See 7 See 8 See
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See also paragraph
System
Activated
Auto transfer.

j.

the ABS Marine Vessel Rules incorporated by reference; see 62.051 Part 496, tables 1A, 1B, and 5A.
ABS Marine Vessel Rules Part 496, table 2.
113.37 of this chapter.
ABS Marine Vessel Rules Part 496, tables 4A and 4B and subparts 111.33 and 111.35 of this chapter.
ABS Marine Vessel Rules Part 496, table 6.
subparts 112.45 and 112.50 of this chapter.
ABS Marine Vessel Rules Part 496, Tables 6 for auxiliary gas turbines and 3 for propulsion gas turbines; and 46 CFR 58.1015f.
ABS Marine Vessel Rules Part 496, tables 5A and 6.

a Safety limit controls must be provided in navigating bridge primary propulsion control systems. See 62.355c.
b Safety trip controls and alarms must be provided for all main boilers, regardless of mode of operation. See 62.3520a.
c Loss of forced lubrication safety trip controls must be provided for main propulsion turbines and main propulsion diesel engines.
d Override of overspeed and loss of forced lubrication pressure safety trip controls must not be provided for main propulsion or generator steam or gas turbines, or diesel engines. See 62.35
5e2.
e Transfer interlocks must be provided for main propulsion systems capable of remote and local control.
f Semiconductor controlled rectifiers must have current limit controls.
g Interlocks must be provided to prevent the starting of engines or turbines while the jacking or turning gear, if installed, is engaged. See 62.255a.
h 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.
i Minimally attended and periodically unattended machinery plants must be provided with a personnel alarm that annunciates on the bridge if not acknowledged by the watch engineer. See 62.5020b1.
j All automatic controls and alarms must be failsafe to the least critical consequence for the particular system.
See 62.301.
k The operating or tripped status of vital auxiliary boilers must be indicated at the ECC. See part 63.

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62.501

Amended
62.5020

Amended
355. Amend 62.5020 as follows:
a. Designate the note preceding paragraph a as note 1 to 62.5020;
b. Designate the note immediately following paragraph a4 as note 2 to paragraph a4;
c. Remove the note immediately following paragraph c;
d. In paragraph e2, remove the words of this chapter and add, in their place, the words of this subchapter;
e. In paragraph e3, remove the words are required and add, in their place, the words are installed;
f. In paragraph e4:
i. Remove the words of this chapter and add, in their place, the words of this subchapter; and ii. Remove the text 56.5050f and add, in its place, the text 56.5050f of this subchapter;
g. In paragraph g2, remove the text 111.1211g and 111.301 and add, in its place, the text 111.12
11g and 111.301 of this subchapter;
and h. In paragraph h3, remove the last sentence.
356. Amend 62.5030 as follows:
a. Designate the note preceding paragraph a as note 1 to 62.5030
b. In paragraph a, remove the words of this part;
c. In paragraph c:

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i. Remove the word Steel and add, in its place, the word Marine; and ii. Remove the text 46 CFR and add, in its place, the symbol ;
d. In paragraph d, remove the words and continuously;
e. Revise the introductory text to paragraph h;
f. In paragraph h4, remove the text 56.5060d and add, in its place, the text 56.5060d of this subchapter;
g. In paragraph i, remove the words high pressure and add, in their place, the text high-pressure; and h. In paragraph k, remove the word Steel and add, in its place, the word Marine.
The revision reads as follows:

354. Amend 62.501 as follows:
a. Designate the note immediately following paragraph b5 as note 1 to paragraph b5; and b. In paragraph c, by removing the words immediately replaced or repaired and add, in its place, the text replaced or repaired,.

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62.5030 Additional requirements for periodically unattended machinery plants.

h Fire control station. A control station for fire protection of the machinery spaces must be provided outside the machinery spaces. At least one access to this station must be independent of category A machinery spaces, and any boundary shared with these spaces must have an A60 fire classification as defined in 72.05 of this chapter. The number of control and monitoring cables and piping for the station that adjoin or penetrate the boundaries of a category A machinery space, uptakes, or casings must be minimized. The fire control station must include

PART 63AUTOMATIC AUXILIARY
BOILERS
357. The authority citation for part 63
continues to read as follows:

E:FRFM19OCP2.SGM

19OCP2