Operational aspects
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.648 – Guidelines for the Operation, Inspection and Maintenance of Ship Sewage Systems – (Adopted on 6 June 1994) - Annex - Guidelines for the Operation, Inspection and Maintenance of Ship Sewage Systems - Operational aspects

Operational aspects

  13 The use of large quantities of disinfectant toilet cleaners may destroy the bacteria which are essential to the operation of aerobic sewage treatment plants. The manufacturers recommendations should be followed in relation to the type and quantities of cleaners to be used.

  14 All officers and crew should be informed of the dangers of sewage gases being generated and finding their way into working and living spaces. There attention should be drawn to the hazards identified in these guidelines. There should be an operational procedure on board ship for reporting and recording the inspection and maintenance of sewage systems and the action taken to deal with complaints of foul or musty smells which may be due to toxic, flammable or oxygen-depleted gases.


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