Features and advantages: Elimination of
overflow tanks and reduction of overflow
piping. The Bunker Overfill Protection
automatically limits bunker pressure and
automatically prevents overfill/overflow
during all bunkering operation including
bunker trimming and fuel treatment. Function: During the bunker operation the
system pressure in the bunker piping is
automatically controlled to the maximum
permissible bunker pressure, irrespective of
the supply pump pressure.
Bunker overflow is safely prevented by the
2-stage bunker safety valves (with approval
as QCV quick closing valve). The bunker
safety valves are controlled by pre- and
high level set points provided by the bunker
contents gauge. The pre level signal will
close the first stage of the bunker safety
valve to reduce the flow rate to 30 %, this
permits slow top up und prevents excessive
pressure surges in the bunker piping.
The high level signal will close the bunker
safety valves fail safe. In the unlikely event and as added safety the
pressure control valve will close immediately
in case the bunker safety valve does not send
a closure signal. The pressure control valve
will also close if the additional and separate
high level signal should be activated. | Because of the assured safety against
overfill, the classification bodies permit
bunker overfill protection design without
overflow bunker and large sized overflow
piping. The requirement is for bunker vent
piping of 1/3 of the bunker pipe cross
section, however at least 50 mm. - Type Approval Certificate Nr.: 04/20010
Lloyd’s Register EMEA
- Fuels: Marine Diesel and light fuel oil with
flame point > 60°C.
For flame point < 60°C ex proof design
and hazardous area allocation required.
Quick closing Fire Safe
Tank Savety valve. - Pneumatically
activated - Fail safe closing
- Sizes DN 65, 80,100
- Functionally
integrated into
Helicopter
Refueling
System Controls - Fire safe shut off
and operational
valve incorporated
in one valve
(two valves in one)
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