Features: - Tanker Operator

TECHNOLOGY - EMISSIONS
Allweiler pumps operate efficiently at
viscosity levels as low as 1 sq mm/s, but
maintaining high pump performance when
using low-sulphur fuel oils may demand an
upgrade kit or a replacement pump featuring
specially treated spindle and housing
materials.
Allweiler Solutions
In the majority of low-pressure applications,
Allweiler pumps can handle new fuels without
modifications, but there is a greater need to
check the operational condition of pumps in
fuel oil applications with higher pressure
requirements.
If uncertain, Allweiler can investigate the
current operating conditions of a pump and
recommend remedial action.
Check tool
Allweiler’s new fuel oil pump check tool
assesses the affect of low sulphur fuels against
original pump specifications.
The tool, available on Allweiler’s Service
Portal (www.allweiler.com), is simple to use,
requiring information about the pump series,
size, pitch, current material combination,
operating mode, pressure, speed and the
lowest operational viscosity expected.
On entering the required parameters, users
receive an immediate pump assessment
report and recommended actions if pump
limits are exceeded. Additionally and
contingent upon detailed information,
Allweiler can assess pumps from other
suppliers on request.
Allweiler upgrade kits are occasionally
recommended by the check tool. These kits
reduce mechanical failures and total
ownership costs, while increasing equipment
performance and mean time between failures.
Further, they protect metallurgical, hard
facings and coatings to resist wear, erosion
and corrosion damages caused by low-sulphur
diesel fuel, thus prolonging the life of internal
parts and overall pump reliability.
ALLFUEL
ALLFUEL, Allweiler’s new generation 3-
screw pump series for light and heavy fuel
oil, is fully compliant with current and
upcoming low-sulphur diesel fuel regulations.
The series meet regulations requiring
operation of ships in inland waterways and
ports to be powered only by fuels containing
less than 0.1% sulphur.
They feature heating elements for the
mechanical seal and filter chamber, to enable
the pump to start smoothly with heavy fuel oil
and a filter design for easy maintenance. By
Allweiler’s new generation pump series – ALLFUEL – is compliant with current and
upcoming low sulphur diesel fuel regulations.
modifying how liquid flows through the pump
filter, dirt particles are retained in the filter
and held in place by a magnetic filter base. A
vacuum meter continuously monitors the
cleanliness of the filter, which can be changed
without having to drain, dispose and refill
the oil.
ALLSEAL
Delivered with the new ALLSEAL leak
detection and collection system, Allweiler
screw pumps utilise an opto-electronic sensor
monitoring of the mechanical seal to indicate
when maintenance is needed and when
emergency shutdown should be activated to
prevent environmental and expensive pump
damages.
Many operators are now retrofitting existing
pumps with ALLSEAL equipment to closer
gauge the wear and leakage of the mechanical
seal. Featuring a bracket sensor and an
innovative leakage collecting solution,
ALLSEAL provides condition monitoring of
the pump and shaft seal, thus avoiding system
downtime and reducing the risk of
environmental and engine room damage.
ALLSEAL fully complies with SOLAS
directives for flammable and explosive
liquids. It is available for vertical installed 3-
screw pumps of ALLFUEL and ALLMARINE
SN series.
"Allweiler is the only manufacturer to offer
a complete approach to sealing," claimed
Dr Matros.
Concerning shaft seals, shipowners can
select Allweiler’s traditional mechanical
seal with or without the leak-detection
system ALLSEAL or the hermeticallysealed
MAGDRIVE pumps with magnetic
TO
coupling.
November/December 2009 TANKEROperator 39