Exam Question

(a) In the event of power failure in ship, Emergency power source is required to meet the essential services by the emergency equipments.
SOLAS chapter II-1 Part D, regulation 43 tells about emergency source of power and regulation 44 states about starting arrangement of emergency source.
One of the emergency power source is Emergency Generator which starts automatically upon failure of main source of power and connect to emergency switchboard in less than 45 seconds. It is capable of supplying all those services which are essential for safety in an emergency. Power rating of Emergency Generator depends on the size and the role of the ship.
The Emergency generator should be located outside machinery space which is generally at the uppermost continuous deck and readily accessible from open deck. They shall not be located at the forward of the collision bulkhead, except where permitted by the administration on certain circumstances. Fire or other casualty on main source of electrical power or machinery space should not interfere emergency source of power. Emergency Generator sets shall be capable of starting in cold temperature of 0°C, if not possible than suitable heating arrangement should be present. It should have sufficient fuel in separate tank at all time which is sufficient to run emergency generator on full load for 18 hours for cargo ship and 36 hours for passenger ship. Flash point of the fuel used in diesel generator must not be less than 43°C. During running, Emergency Generator must have provision of cooling either by water or air.