Hong Kong Regulations

MERCHANT SHIPPING (PREVENTION OF POLLUTION BY SEWAGE) REGULATION - SCHEDULE SCHEDULE

[sections 9, 10, 21, 23, 26 & 28]

REQUIREMENTS FOR EQUIPMENTS, ETC.

1. The ship concerned shall be equipped with-

   (a)  a sewage treatment plant which is in compliance with the International
        Effluent Standards for Sewage Treatment Plants and the Guidelines for
        Performance Tests for Sewage Treatment Plants with respect to Effluent
        Standards adopted by the International Maritime Organization by
        resolution MEPC.2(VI);

   (b)  a sewage comminuting and disinfecting system fitted with facilities
        for the temporary storage of sewage when the ship is at a distance of
        not more than 3 nautical miles from the nearest land; or

   (c)  a holding tank with a capacity or holding tanks with total capacity
        adequate to retain all the sewage produced on board the ship in any
        voyage that may be engaged by the ship until the sewage is discharged
        from the ship properly in accordance with section 28(1) of this
        Regulation. The holding tank shall have a means to indicate visually
        the amount of its content.

2. The ship concerned shall be equipped with a discharge manifold for
connection to reception facilities for the discharge of sewage. The discharge
manifold shall be located on the open deck of the ship with piping. This
piping shall be fitted with a flange in accordance with the following
dimensions-

Description Dimension Outside diameter 210 mm Inner diameter According to pipe
outside diameter Bolt circle diameter 170 mm Slots in flange 4 holes, 18 mm in
diameter, equidistantly placed on a bolt circle of 170 mm diameter, slotted to
the flange periphery, the slot width to be 18 mm Flange thickness 16 mm Bolts
and nuts: quantity and diameter 4 each of 16 mm in diameter and of suitable
length
The flange shall be designed to accept pipes up to a maximum internal diameter
of 100 mm and shall be of steel or other equivalent material having a flat
face. This flange, together with a suitable gasket, shall be suitable for a
service pressure of 600 kPa.