The emergency diesel generator and switchboard are in a separate section: on the deck A. Diesel fuel is supplied to the emergency generator engine from a separate tank located in the emergency generator room. It is replenished from the DO storage tank using a diesel fuel separator or a diesel fuel transfer pump. There is also a manual refill connection above the emergency generator room for direct filling from the barrels. If the tank is accidentally overfilled, the excess fuel will flow back into the tank of the diesel fuel bunker. The fuel tank has a low-level alarm and a gauge glass that makes it easier to control the fuel level (According to SOLAS regulation an emergency generator should be capable of providing continuous power for at least 18 hours in case of cargo ships and 36 hours in case of passenger ships).

Diesel fuel from the tank, via a pneumatically operated quick-closing drain valve, is supplied to the emergency generator engine, through flexible hoses and fine cleaning filters, to high-pressure fuel pumps, and excess fuel is returned to the emergency generator DO tank.

The quick-closing valve is controlled from the emergency shut-off valve control panel, which is in the fire control station (like all other quick-closing valves on fuel tanks). After the valve has tripped and closed, it must be reopened in place manually.

Fuel supply system for the emergency generator engine

 

Last modified: Thursday, 26 January 2023, 12:09 PM