Code of Veterinary Practice For Poultry Processing Plant
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3.5 Ceilings
3.5.1 Ceilings should be provided in all rooms of processing premises.
3.5.2 Ceilings should be constructed from acceptable materials, smoothly  nished and impervious to moisture. Joints and  xing devices should be effectively sealed.
3.5.3 The minimum height of a ceiling, or distance measured from the  oor to the wall plate, should not be less than 3m in all processing rooms.
3.6 Coving
3.6.1 Walls and curbs, should be coved to the  oor with a radius of at least 75mm.
3.6.2 Wall to wall junctions should be coved with a radius of at least 25mm.
3.7 Passageways, doors and jambs
3.7.1 Passageways, doors and doors jambs should be constructed from, or sheathed with rust resistant materials.
3.7.2 Where sheeting is used, joints should be effectively sealed against moisture entry by continuous welding or other equally effectively means.
3.7.3 Fixing devices such as pop rivets or screw should be effectively sealed to prevent crevices which are dif cult to clean.
3.7.4 Passageways and doorways through which product is transferred by rail or trolley should be of suf cient width to prevent contact of the product.
3.7.5 Doors opening from processing rooms to the exterior should be  tted with self-closing devices. Strip type P.V.C type curtains should only be used on openings through which packaged products pass.