[Code of Federal Regulations]
[Title 46, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR62.50-30]

[Page 310-311]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 62_VITAL SYSTEM AUTOMATION--Table of Contents
 
          Subpart 62.50_Automated Self-propelled Vessel Manning
 
Sec. 62.50-30  Additional requirements for periodically unattended 
machinery plants.

    Note: Periodically unattended machinery plants include machinery 
plants and spaces that are automated to the degree that they are self-
regulating and self-monitoring and could safely be left periodically 
unattended. Emphasis is placed on providing systems that act 
automatically until the crew can take action in the event of a failure 
or emergency. Requirements are in addition to those of a minimally 
attended machinery plant.

    (a) General. The requirements of this section must be met in 
addition to those of Sec. 62.50-20 of this part.
    (b) Automatic transfer. Redundant vital auxiliaries and power 
sources must automatically transfer to the backup units upon failure of 
operating units.
    (c) Fuel systems. The fuel service and treatment system(s) must meet 
section

[[Page 311]]

41.77.1 of the American Bureau of Shipping's ``Rules for Building and 
Classing Steel Vessels.''
    (d) Starting systems. Automatic or remote starting system receivers, 
accumulators, and batteries must be automatically and continuously 
charged.
    (e) Assistance-needed alarm. The engineer's assistance-needed alarm 
(see subpart 113.27 of this chapter) must annunciate if--
    (1) An alarm at the ECC is not acknowledged in the period of time 
necessary for an engineer to respond at the ECC from the machinery 
spaces or engineers' accommodations; or
    (2) An ECC alarm system normal power supply fails.
    (f) Remote alarms. ECC alarms for vital systems that require the 
immediate attention of the bridge watch officer for the safe navigation 
of the vessel must be extended to the bridge. All ECC alarms required by 
this part must be extended to the engineers' accommodations. Other than 
fire or flooding alarms, this may be accomplished by summarized visual 
alarm displays.
    (g) ECC alarms. All requirements of this part for system or 
equipment monitoring must be met by providing both displays and alarms 
at the ECC.
    (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 
A-60 fire classification as defined in Sec. 72.05 of this chapter. 
Except where such an arrangement is not possible, control and monitoring 
cables and piping for the station must not adjoin or penetrate the 
boundaries of a category A machinery space, uptakes, or casings. The 
fire control station must include--
    (1) Annunciation of which machinery space is on fire;
    (2) Control of a fire pump required by this chapter to be 
independent of the main machinery spaces;
    (3) Controls for machinery space fixed gas fire extinguishing 
systems;
    (4) Control of oil piping positive shutoff valves located in the 
machinery spaces and required by Sec. 56.50-60(d);
    (5) Controls for machinery space fire door holding and release 
systems, skylights and similar openings;
    (6) The remote stopping systems for the machinery listed in Sec. 
111.103 of this chapter; and
    (7) Voice communications with the bridge.
    (i) Oil leakage. Leakages from high pressure fuel oil pipes must be 
collected and high levels must be alarmed at the ECC.
    (j) Maintenance program. The maintenance program of Sec. 62.50-
20(h) must include a checkoff list to make sure that routine daily 
maintenance has been performed, fire and flooding hazards have been 
minimized, and plant status is suitable for unattended operation. 
Completion of this checkoff list must be logged before leaving the plant 
unattended.
    (k) Continuity of electrical power. The electrical plant must meet 
sections 41.75.1 and 41.75.3 of the American Bureau of Shipping's 
``Rules for Building and Classing Steel Vessels'' and must--
    (1) Not use the emergency generator for this purpose;
    (2) Restore power in not more than 30 seconds; and
    (3) Account for loads permitted by Sec. 111.70-3(f) of this chapter 
to automatically restart.

[CGD 81-030, 53 FR 17838, May 18, 1988; 53 FR 19090, May 26, 1988]