6.3.5.7
Return fuel tank (1T13)
The return fuel tank shall be equipped with a vent valve needed for the vent pipe to the MDF
day tank. The volume of the return fuel tank should be at least 100 l.
6.3.5.8
Black out start
Diesel generators serving as the main source of electrical power must be able to resume their
operation in a black out situation by means of stored energy. Depending on system design
and classification regulations, it may in some cases be permissible to use the emergency
generator. HFO engines without engine driven fuel feed pump can reach sufficient fuel pressure
to enable black out start by means of:
●
A gravity tank located min. 15 m above the crankshaft
●
A pneumatically driven fuel feed pump (1P11)
●
An electrically driven fuel feed pump (1P11) powered by an emergency power source
Wärtsilä 20 Product Guide - a13 - 6 September 2016
6-21
6. Fuel Oil System
Wärtsilä 20 Product Guide
Содержание WARTSILA 20
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