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e-CFR data is current as of November 25, 2020

Title 46Chapter ISubchapter JPart 112 → Subpart 112.55


Title 46: Shipping
PART 112—EMERGENCY LIGHTING AND POWER SYSTEMS


Subpart 112.55—Storage Battery Installation


Contents
§112.55-1   General.
§112.55-5   Emergency lighting loads.
§112.55-10   Storage battery charging.
§112.55-15   Capacity of storage batteries.

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§112.55-1   General.

Each storage battery installation must meet Subpart 111.15 of this chapter.

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§112.55-5   Emergency lighting loads.

When supplying emergency lighting loads, the storage battery initial voltage must not exceed the standard system voltage by more than 5 percent.

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§112.55-10   Storage battery charging.

(a) Each storage battery installation for emergency lighting and power, and starting batteries for an emergency diesel or gas turbine driven generator set, must have apparatus to automatically maintain the battery fully charged.

(b) When the ship's service generating plant is available, the battery must have a continuous trickle charge, except that after discharge the battery must be charged automatically at a higher rate.

(c) Charging operations must not cause an absence of battery power.

(d) There must be instruments to show the rate of charge.

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§112.55-15   Capacity of storage batteries.

(a) A storage battery for an emergency lighting and power system must have the capacity—

(1) To close all watertight doors two times;

(2) To open all watertight doors once; and

(3) To carry the remaining emergency loads continuously for the time prescribed in §112.05-5(a), table 112.05-5(a).

(b) At the end of the time specified in paragraph (a) of this section, the potential of the storage battery must be at least 88 percent of the standard voltage.

[CGD 74-125A, 47 FR 15267, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 28288, June 4, 1996; 61 FR 39695, July 30, 1996]

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