Section 59

Sanitary, ballast and general service pumps may be accepted as independent power bilge pumps if fitted with the necessary connections to the bilge pumping system.

All bilge pipes used in or under coal bunkers or fuel storage tanks or in boiler or machinery spaces, including spaces in which oil-settling tanks or oil fuel pumping units are situated, shall be of steel or other suitable material.

The arrangement of the bilge and ballast pumping system shall be such as to prevent the possibility of water passing from the sea and from water ballast spaces into the cargo and machinery spaces, or from one

BRUNEI DARUSSALAM GOVERNMENT GAZETTE compartment to another. Provision shall be made to prevent any deep tank having bilge and ballast connections being inadvertently flooded from the sea when containing cargo, or being discharged through a bilge pipe when containing water ballast.

{e)

All distribution boxes and manually operated valves in connection with the bilge pumping arrangements shall be in positions which are accessible under ordinary circumstances.

{f)

Provisions shall be made for the drainage of enclosed cargo spaces situated on the bulkhead deck of a passenger ship and on the freeboard deck of a cargo ship, provided that the Director may permit the means of drainage to be dispensed with in any particular compartment of any ship or class of ship if he is satisfied that by reason of size or internal subdivision of those spaces the safety of the ship is not thereby impaired.

{g)

Where the freeboard to the bulkhead deck or the freeboard deck respectively is such that the deck edge is immersed when the ship heels more than 5°, the drainage shall be by means of a sufficient number of scuppers of suitable size discharging directly overboard, fitted in accordance with the requirements of regulation 50 in the case of a passenger ship and the requirements for scuppers, inlets and discharges of the International Convention on Load Lines in force in the case of a cargo ship.

the number, size and disposition of the scuppers are such as to prevent unreasonable accumulation of free water;

the pumping arrangements required by this regulation for passenger ships or cargo ships, as applicable, take account of the requirements for any fixed pressure water-spraying fixe-extinguishing system;

\CJ water contaminated with petrol or other dangerous substances is not drained to machinery spaces or other spaces where sources of ignition may be present; and 582

583 27th. DECEMBER, 2003

where the enclosed cargo space is protected by a carbon dioxide fire-extinguishing system, the deck scuppers are fitted with means to prevent the escape of the smothering gas.

Passenger ships.

one of the required bilge pumps shall be an emergency pump of a reliable submersible type having a source of power situated above the bulkhead deck; or

With the exception of additional pumps which may be provided for peak compartments only, each required bilge pump shall be so arranged as to draw water from any space required to be drained by paragraph (a) of sub-regulation (1).

({)

Each power bilge pump shall be capable of pumping water through the required main bilge pipe at a speed of not less than 2 metre/sec.

Independent power bilge pumps situated in machinery spaces shall have direct suctions from these spaces, except that not more than 2 such suctions shall be required in any one space. Where 2 or more such suctions are provided, there shall be at least one on each side of the ship. The Director may require independent power bilge pumps situated in other spaces to have separate direct suctions. Direct suctions shall be suitably arranged and those in a machinery space shall be of a diameter not less than that required for the bilge main.

In addition to the direct bilge suction or suctions required by paragraph (f), a direct suction from the main circulating pump leading to the drainage level of the machinery space and fitted with a non-return valve shall be provided in the machinery space. The diameter of this direct suction pipe shall be at least two-thirds of the diameter of the pump inlet in the case of steamships, and of the same diameter as the pump inlet in the case of motorships.

All bilge suction piping up to the connection to the pumps shall be independent of other piping.

The diameter 11d" of the bilge main shall be calculated according to the following formula. The actual internal diameter of the bilge main may be rounded off to the nearest standard size acceptable to the Director-d = 2s + 1.68 vt (B + o}

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585

where-d is the internal diameter of the bilge main (millimeters);

L and B are the length and the breadth of the ship (metres);

and

D is the moulded depth of the ship to the bulkhead deck

(metres), provided that in a ship having an enclosed cargo space on the bulkhead deck which is internally drained in accordance with the requirements of paragraph {g)(ii) of sub-regulation (1) and which extends for the full length of the ship, D shall be measured to the next deck above the bulk~

head deck. Where the enclosed cargo spaces cover a lesser length, D shall be taken as the moulded depth to the bulkhead deck plus lh/L where 1 and h are the aggregate length and height respectively of the enclos~d cargo spaces (metres). The diameter of the bilge branch pipes shall meet the require-ments of the Director.

(j}

Provision shall be made to prevent the compartment served by any bilge suction pipe being flooded in the event of the pipe being severed or otherwise damaged by collision or grounding in any other compartment.

For this purpose, where the pipe is at any part situated nearer the side of the ship than one~fi.fth of the breadth of the ship (as defi.ned in regulation 25

and measured at right angles to the centreline at the level of the deepest subdivision load line), or is in a duct keel, a non-return valve shall be fi.tted to the pipe in the compartment containing the open end.

{k}

Distribution boxes, cocks and valves in connection with the bilge pumping system shall be so arranged that, in the event of flooding, one of the bilge pumps may be operative on any compartment. In addition, damage to a pump or its pipe connecting to the bilge main outboard of a line drawn at one-fi.fth of the breadth of the ship shall not put the bilge system out of action. If there is only one system of pipes common to all the pumps, the necessary valves for controlling the bilge suctions must be capable of being operated from above the bulkhead deck. Where in addition to the main bilge pumping system an emergency bilge pumping system is provided, it shall be independent of the main system and so arranged that a pump is capable of operating on any compartment under flooding condition as specified in paragraph {a). In that case, only the valves necessary for the operation of the emergency system need be capable of being operated from above the bulkhead deck.

{l} All cocks and valves referred to in paragraph {k} which can be operated from above the bulkhead deck shall have their controls at their

BRUNEI DARUSSALAM GOVERNMENT GAZETTE place of operation clearly marked and shall be provided with means to indicate whether they are open or closed.

Cargo ships.