INCINERATORS ON SHIPS

Shipboard incineration Regulation 16The requirements of the regulation also divide into two sections. Regulations 16.1 16.4 cover onboard incineration in general and hence is potentially applicable to all ships whereas regulations 16.6 16.9 are specific only to incinerators installed on ships constructed on or after 1 January 2000 or to units installed on existing ships on or after that date. Regulation 16.1 requires that incineration is only undertaken in equipment designed for that purpose while regulation 16.2 prohibits the incineration of certain listed materials and therefore can be seen as complimentary to the Annex V requirements in respect of the processing of ship generated garbage. The disposal of polyvinyl chlorides (PVC) by incineration is restricted to units which are type approved to either MEPC.76(40) or MEPC.59(33), regulation 16.3. Regulation 16.4 recognizes that, while incineration of ship generated sewage sludge and sludge oil could alternatively be undertaken in main or auxiliary power plant or boilers, it is not to be undertaken within ports, harbours or estuaries. Regulation 16.6 generally requires that incinerators installed on ships constructed on or after 1 January 2000 or units which are installed on existing ships on or after that date are to Type Approved in accordance with resolution MEPC.76(40) as modified by resolution MEPC.93(45) Standard specification for shipboard incinerators. For these incinerators operating manuals are to be maintained onboard, regulation 16.7, and training as to their correct operation is to be given, regulation 16.8. Regulation 16.9 requires that operation is such that the stated temperatures are achieved in order to ensure complete incineration.

Pilot burner is provided for initial fire up.Auxiliary burner is provided for igniting the refuse.Sludge burner is provided for burning oil and sewage sludge.Combustion air is supplied by a forced draft fan.The loading door for the garbage is interlocked with the burner and forced draft fan.The incinerator is allowed to cool after the operation. A fan is provided for the purpose and it runs for specific period of time after the incinerator is shut down.Ash and non-combustibles are removed by pulling out the ash slide door.Some arrangement like Rotating Rabble shaft is provided for scraping all solid residue from the chamber in to the ash box.The Control of the Incinerator must ensure that all aspects of safety are provided.Local and Remote Station Emergency Stop is provided for the incineratorThe Exhaust gas temperature is controlled to ensure that the all waste is burnt and the odours are destroyed but it should not reach so high as to melt glass and metal. The incinerator is designed to trip if the exhaust temperature reaches above 1275 degrees.