Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p86
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 222615–225501

and any moving part of the main engine, and that the duty deck officer has confirmed that the propeller is clear.
If a hot bearing has been detected in a closed crankcase, the crankcase should not be opened until sufficient time has been allowed for the bearing to cool down; otherwise the entry of air could create an explosive air/oil vapour mixture.
The opened crankcase or gear case should be well ventilated to expel all flammable gases before any source of ignition, such as a portable lamp (unless of an approved safety type), is brought near to it.
Before the main engine is restarted, a responsible engineer officer should check that the shaft is clear and inform the duty deck officer who should confirm that the propeller is clear.

18.3              Turbines
The governor, low lubricating oil pressure alarm and shutdown devices, and other speed limiting devices should be made ready to operate should abnormal operations occur.
Steam joints, valve gland and gland sealing arrangements should be maintained in good order to avoid excessively high humidity in the surrounding area.

18.4              Internal combustion engines
Internal combustion machinery should be maintained in safe condition and be regularly inspected as required by the manufacturer.
Scavenge trunks should be kept clean and free from loose oil and turbo-blowers should be kept free of accumulations of oil and dirt.
A source of ignition (e.g. a portable electric light or naked flame) should not be brought near an open engine crank case until it has been cooled and well ventilated and until all explosive gases have been expelled.

18.5              Air compressors and reservoirs
Air compressors should be properly maintained and inspected by an engineer officer.
The sudden release of air can cause hearing damage or even rupture an eardrum. Maintaining air receivers properly prevents the potential for an explosive rupture.
Compressed air should never be directed at any part of a person's body as air puncturing the skin can result in an air bubble in the blood stream which can be fatal.
Compressed air should not be used to clean a working area.
Seafarers should be particularly aware of the dangers of using high pressure pneumatic equipment, such as cleaning and scaling devices, as their misuse can lead to fatal consequences.

18.6              Refrigeration systems
Information about the operating and maintenance safeguards of the refrigeration plant should be displayed on each vessel, including the particular properties of the refrigerant and the precautions for its safe handling.
Refrigeration compressors and systems should be properly maintained to avoid leakage of refrigerant, either in the compressor room or in the refrigerated compartments. Where refrigerating equipment is isolated, the responsible engineer officer should be notified before entering the machinery room or