Part 4Drainage of pens

Part 4 Drainage of pens

4.1 Drainage system to be kept separate from drinking water system

The drainage system for livestock sewage must be kept separate from, and not connected in any way to, the livestock drinking water system.

4.2 Requirement for removing fluids

(1) A vessel must have a means of effectively draining fluids from a pen where livestock is carried, under any expected conditions of trim by the head or by the stern, or of angle of heel to either side.

(2) For a vessel constructed, or converted, for the carriage of livestock before 27 May 2004, if livestock is carried in pens that are in more than 1 tier, drainage is not required from the upper tier or tiers.

Note Annex IV of MARPOL and Marine Order 96 (Marine pollution prevention — sewage) 2013 impose requirements on sewage and may be relevant.

4.3 Drains for certain vessels

(1) Subclauses (2) and (3) apply to a vessel that:

(a) was constructed or converted for the carriage of livestock after 1 July 2018; and

(b) has not previously been issued with an ACCL.

(2) The vessel must have drains at each corner of a pen or group of pens as follows:

(a) for a vessel with a beam of more than 20 m:

(i) at least 3 drains fitted athwartships; and

(ii) for every 5 m that the beam of the vessel exceeds 20 m — an additional drain.

(b) no more than 20 m apart longitudinally in each hold or livestock space;

(c) for a drain that consists of pipes to the deck below, on a vessel that carries livestock other than sheep or goats:

(i) pipes with an internal diameter of at least 300 mm; and

(ii) an outlet that is at least 250 mm above the deck or well below.

(3) If a drain is inside a pen, it must be protected so that:

(a) livestock cannot get their feet caught in the drain; and

(b) any protection does not prevent the flow of effluent.

4.4 Drained fluids to be kept away from other areas

Drainage arrangements must ensure that fluids drained from a pen are kept clear of related work areas and other pens.

4.5 Pump or eductor for drainage tank

A pump or eductor for a drainage tank or well must:

(a) be able to handling semi-solid matter; and

(b) evacuate the tank or well by lines other than the vessel's bilge lines; and

(c) be powered from both the main and secondary sources of power.

4.6 Inspection and cleaning of drainage arrangements

For inspection and cleaning, the following things must be accessible from outside livestock pens: