| Objective: This Chapter outlines the minimum requirements for
bilge pumping, which shall be in accordance with the requirements of
a Recognised Organisation. The Class Notation shall cover the
minimum aspects defined within this chapter. The principle objective
of this section is that in the event of one compartment being
flooded, which may or not be the engine room, there is an ability to
control any leakage to adjacent compartments.
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10A.1 General Requirements
(1) The bilge pumping equipment and its installation shall, in general, meet with the
requirements of a Recognised Organisation. Either the vessel shall be in class or a
statement of compliance issued by one of the Societies shall be provided to the
Administration.
(2) In the event that 10A.1(1) cannot be met on an existing vessel, the
Administration may be requested to consider alternative arrangements to achieve
adequate safety standards.
(3) All vessels shall be provided with at least two fixed and independently powered
bilge pumps, with suction pipes so arranged that any compartment can be effectively
drained when the vessel is heeled to an angle of 10º. For Short Range Yachts, the
second pump and suction pipes may be portable.
(4) The location of pumps required by 10A.2, their individual power supplies and
controls, including those for bilge valves shall be such that, in the event of any
one compartment being flooded at least one of those pumps is capable of removing
water from the flooded space and adjacent compartments and discharging this via a
dedicated discharge overboard.
(5) Each bilge pump suction line shall be fitted with an efficient strum box.
(6) In the case of a vessel where the propulsion machinery space may be unmanned at
any time, a bilge level alarm shall be fitted. The alarm shall provide an audible
and visual warning in the Master's cabin and in the wheelhouse. The audible and
visual alarm may be accepted elsewhere if it is considered that such a location may
be more appropriate.
(7) Pumping and piping arrangements for bilges into which fuel or other oils of
similar or higher fire risk could collect, under either normal or fault conditions,
shall not contravene MARPOL requirements. Bilge level alarms meeting the
requirements of 10A.1(6) shall be fitted to all such bilges.
10A.2 Additional Equivalence Considerations
(1) None
10A.3 Alternative Design and Arrangements
(1) Vessels may follow Section 1.9 on Alternative Design and Arrangements for
thischapter as allowed by SOLAS II-1/55.
(2) The engineering analysis required by 1.9(3) shall be prepared and
submitted to the Administration, based on the guidelinesfootnote and shall include, as a minimum, the following
engineering analysis elements:
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(a) determination of the ship type, machinery, electrical installations and
space(s) concerned;
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(b) identification of the prescriptive requirement(s) with which the
machinery and electrical installations will not comply;
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(c) identification of the reason the proposed design will not meet the
prescriptive requirements supported by compliance with other recognized
engineering or industry standards;
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(d) determination of the performance criteria for the ship, machinery,
electrical installation or the space(s) concerned addressed by the relevant
prescriptive requirement(s):
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(i) performance criteria shall provide a level of safety not inferior
to the relevant prescriptive requirements contained in SOLAS II-1 parts C, D and E; and
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(ii) performance criteria shall be quantifiable and measurable;
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(e) detailed description of the alternative design and arrangements,
including a list of the assumptions used in the design and any proposed
operational restrictions or conditions;
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(f) technical justification demonstrating that the alternative design and
arrangements meet the safety performance criteria; and
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(g) risk assessment based on identification of the potential faults and
hazards associated with the proposal.