English to Polish Tech/Engineering Engineering (general) mycie/ utrzymanie czystości w zakładzie

'All brooms and hand brushes used to clean in the pearling plant shall be made of material other than wood, shall have nylon bristles, which should, ideally, be coloured to enable detection of detached bristles, shall be kept clean and in good condition and, when not in use, shall be hung up with bristles facing downwards, to aid drying'.
Kurcze, nie wiem co za pearling plant?? Cały akapit o gąbkach, szczotkach i miotłach. W Googlach mi wyszła roślinka akwariowa.... Jaki macie pomysł?