Code of Veterinary Practice For Poultry Processing Plant
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b) Processing Waste Drainage
2.10.5 The drainage system from processing areas should be designed to enable rapid removal of wash down or other water from the  oors of departments. The system should ensure effective and expeditious removal of plant ef uent from premises.
2.10.6 Drainage waste outlets should be provided to adequately remove waste in processing areas.
2.10.7 Each drainage waste should be at least 100mm in diameter and be  tted with perforated or grilled drain covers.
2.10.8 Drainsshouldbeequippedwitheffective,P,UorSshaped deep seal traps and be adequately vented to the outside atmosphere.
2.10.9 Floors should be evenly graded to the trapped drainage wastes.
2.10.10 Drainage for the removal of viscera, feathers etc. within the packing, dressing and killing areas should take the form of a box channel drain.
2.10.11 Box channel should be wide enough to enable cleaning and internal corners should be effectively coved.
2.10.12 Floor drainage valleys should be provided with approved covers where necessary over walkways and the direction of  ow of the drains must be from clean areas to dirty areas.
2.10.13 Where viscera, feathers and other wastes are removed from the processing premises to the save-all by means of a large diameter pipe, both ends of the pipe should be made rodent proof when not in use.
2.10.14 Pits and tanks into which blood is received must be located outside the bleeding area.
2.10.15 Blood pits and tanks should be constructed so that they are impervious to moisture and suitably drained. They should be provided with facilities to enable effective cleaning.