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1200 Tonnes/hour Firepump
Link Pumps
have been building diesel pumpsets for nearly fourty
years. During the last ten years LINK PUMP HIRE has been
servicing the special needs of supply vessels in South
East Asia and other areas. These ships require standby
firefighting capability for protection of personnel on
oil rigs.
The
pump must deliver twenty tonnes of water every minute at
distances of 90 metres and more. The engine must start
reliably, often after long periods of idleness. The set
must be easy to prime and operate and be rigid enough to
stand on an uneven deck, without significant coupling
mis-alignment. And certainly not the least of the
problems, the pumpset must withstand the extremely
corrosive effects of seawater spray in an already humid
and hot tropical environment. |
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Hire units
are usually mounted above the water level on the open
deck. This means that the pump needs low NPSH
requirements and the pumpset should use a minimum of
valuable deck space. These vessels may sometimes be
engaged in towing. The firepump set should be as narrow
as possible to avoid being damaged by the tow rope.
The 300 x 250 – 500 LINK
FIREPUMP is specially
designed for best efficiency
at 1200 tonnes/hour. Low
NPSHr, minimum deck space
and an extremely robust
mounting point for the
monitor, have all been
incorporated into this
purpose designed pump.
The set
shown here has an engine providing 500hp at 1800rpm. The
reduced impeller of 455mm has an output of 8.8 bar.
At 1800rpm
and full size impeller pressure is 12.8 bar and needs
670hp. At 1900rpm with 760hp 14.4 bar is available.
FEATURES
These sets
are the latest development by Link Pumps backed by the
experience of the many firepump sets built and operated
since 1981, in addition to the many diesel pumpsets
built for the Australian domestic market in nearly 40
years of operation.
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Firefighting Pumpset Specification |
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Engine |
Detroit 8V92TA, eight cylinder, V configuration,
turbo charged after cooled diesel fully
reconditioned to Detroit factory specification
and dyno tested to rated loading |
|
Fire Duty Rating |
500 HP at 1800 RPM |
|
Engine Accessories |
Detroit heat exchanger, compressed air start
with compressed air storage tank, sentinel oil
pressure controlled shutdown, protection against
low oil pressure, high cooling water temperature
and low cooling water level. Instrumentation:
Oil pressure, cooling water temperature, pump
pressure and exhaust temperature guages. Air
cleaner: Mounted within protective canopy, made
of corrosion resistant material. |
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Exhaust system |
Stainless steel pipe 150mm size with water
injection before discharge. |
|
Corrosion protection: |
Exhaust manifold coated with high temperature
protective coating, engine block fully coated. |
|
Pump drive and mounting |
Flexible mounted half coupling bolted directly
to flywheel. Heavy duty galvanised and painted
mounting frame with integral fuel tank, lifting
lugs and watertight access doors. Engine section
of pump is fully enclosed. |
|
Pump |
Link 300 x 250 - 500, end suction, centreline
discharge, centreline mounted. Designed to
accept sidethrust from monitor directly mounted
to pump. |
|
Pump Construction |
Cast Iron casing with internal coatings for
corrosion protection Impeller made from bronze.
Seal is packed gland. Suction flange 300mm table
E. Discharge flange 250mm Table E. Impeller
diameter 455mm. |
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Rated capacity |
Flow:1200 cubic metres per hour. Pressure : 8
bar |
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Monitor throw at rated pressure/flow |
100 metres |
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Monitor: |
Skum FJM 200, mounted directly above pump |
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Suction: |
Direct mounted suction manifold with four 150mm
table D flanged connectors to which attach four
150mm rubber suction hoses, each totalling 6
metres in two metre lengths complete with remote
emptying footvalve strainers. |
|
Weight and Dimensions |
5
tonnes. Dimensions 3.5 metres long x 1.2 metres
wide x 1.8 metres high. |
The package is
built around a specially
developed centreline
mounted, top discharge end
suction pump. This unique
Link Pump design,
manufactured specifically
for these sets, provides an
ideal basis for this
extremely compact pumpset.
The small "footprint" of the
unit meets customer
requirements for minimum use
of deck space and avoidance
of potential tow rope
damage. The low profile and
minimal weight of pumpset
means that it can be
airlifted in a normal 747
aircraft. Urgent delivery
deadlines are not dependent
on the availability of
special freighter aircraft.
Priming of the pumps using water from the ships fire system is simple
and very positive. Footvalves on the suction hose allow the full system
to be filled with water through a connection provided at the suction
manifold. Air is easily cleared through the centerline discharge of the
pump and the monitor mounted directly above it.
The
latest model Skum 200 FJM monitor is fitted to this
unit. This monitor features an adjustable nozzle to
encompass maximum range or most effective cooling spray.
An "around the pump" foam system is available as an
optional extra.
Link
Pumps years of experience with these offshore units in
tropical waters has lead to intense concentration on
corrosion prevention. After the engine was rebuilt to
OEM specifications, it was completely disassembled and
all parts individually coated with epoxy paint before
re-assembly. The exhaust manifold and turbocharger were
coated with high temperature protective coatings by a
company specializing in this process for high
performance automobile engines. The pump is internally
coated and painted externally with epoxy paint. Pump
components are selected for use in a seawater
environment.
Main structural members
are galvanized, all steelwork being liberally coated with epoxy paint.
Canopy covers are made from marine grade aluminum, providing robust
covers which are both light and corrosion resistant. Engine exhaust
pipes are all of stainless steel All items mounted on the pumpset have
been selected for their resistance to to salt water corrosion. |
