GRW Fuel Tankers
Engineering Excellence
CONTENTS
ChapterPage
1.
Engineering Excellence3
2.
Imvubu Overview4
3.
Imvubu Meaning5
4.
Lowest Cost of Ownership
6
5.
World Class Design and Construction
7
6.
Bottom Loading Equipment10
7.
Dynamic Design11
8.
Imvubu Configurations and Models
12
9.
Bartec to Measure is to Know
13
10.
GRW Warranty14
11.
Our Offices15
2
Engineering Excellence
GRW is a leading South African
based transport equipment designer,
manufacturer and service provider of
a wide range of quality, cutting-edge
road tankers and trailers.
Founded in 1996, GRW’s hub is its Worcester
manufacturing complex. Highly qualified engineers
use the finest technologies and procedures in our
extensive ultramodern production facilities to produce
world-class and ever-reliable trailers. Each trailer is
configured to meet the unique transportation needs of
our customers.
The industries we serve range from construction and
mining to petroleum and chemical businesses from fastmoving consumer goods to perishable temperaturecontrolled goods as well as palletised goods and breakbulk general cargo. GRW is committed to enhancing
the productivity of its customers – operators across
southern Africa, the Middle East, Australia, Europe and
the United Kingdom – well beyond the production line.
3
Imvubu Overview
GRW has developed an own original concept in fuel
tank engineering. It is set to become the flagship
brand of the industry’s most recognised fuel tanker
model, from Southern Africa’s biggest tanker
manufacturer.
placed with accessibility and serviceability always
in mind. The result is an innovative pneumatic-pipe
and electric-cable routing-and-clamping system that
allows direct and improved ease of access during
diagnostic testing and replacement.
Named the Imvubu - the first branded tanker on
the market - the fuel tanker will allow transporters
to alternate between SPD, metered delivery, and
bridging vehicles. The Imvubu brings unprecedented
flexibility and interchangeability to tanker fleets.
Minor but otherwise significant changes include
consistency in the parts and operating systems from
configuration to configuration; a homogeneous
control panel on all the individual units; and a
fresh look that portrays an image of elegance and
professionalism wherever the tanker travels.
A viable multipurpose vessel has been created
through the manifold pipe system, which enables
the installation and removal of components in a
comparatively uncomplicated process. A significant
saving in cost; an increase in tanker availability;
together with substantially reduced cost of
ownership, taking into account the residual value, are
among the may benefits.
GRW has reduced the number, and thereby the
production costs, of operational components;
standardised compartment sizes; and streamlined
loading and off-loading. In addition, the tanker’s
lower centre of gravity contributes to safety on the
road. An impressive increase in payload crowns the
design.
The flexibility allows for tankers to be adapted
as the needs within a business change, while
resale opportunities, especially in an economic
environment where second-hand is in demand, are
increasing significantly.
Turnaround times on maintenance services and
repairs are reduced as critical components are
4
The Imvubu range comprises four models, 55 000
litre and 50 000 litre, and the smaller 39 000 litre and
33 000 litre tankers, designed for better mobility in
tight areas while retaining the capacity to haul as
much product as the local weight laws allow.
The IMVUBU range are sold with an optional extended
warranty and maintenance contract, supported
by GRW Service branches. An operator’s manual is
provided to ensure the safe use of the equipment and
the correct maintenance programme. Driver training
is included in the terms of sale of each new unit.
The Imvubu brings unprecedented
flexibility and interchangeability to
tanker fleets
Imvubu Meaning
An imvubu in isiZulu is a hippo. The hippopotamus
is probably one of the most underestimated
animals in Africa. It wallows in waterholes or rivers
all day, often only its eyes and ears visible, the
nostrils raised occasionally to breathe. When night
falls the hippo ambles out to graze on the grass. Its
looks belie its nature.
razor-sharp canine teeth, or tusks, are capable of
biting a small boat in half. Despite its stocky shape
and short legs, it can easily outrun a human on
land. Hippos have been clocked at 30 kph (19 mph)
over short distances. These animals can make a big
impact - exactly the commanding performance
GRW expects from its fuel tanker.
The name of the hippopotamus translates from the
Ancient Greek as ‘river horse’. Recognisable by its
barrel-shaped body, stubby legs and tremendous
size, it is the third-largest land mammal by weight.
This comparison underpins GRW’s aggressive and
unique approach to change in our industry. The
creation of another industry first, the offer of an
extended warranty, and full maintenance contract
demonstrate GRW’s commitment to Quality.The
Imvubu tanker offers flexibility, versatility, and
agility, and excels on payload. It is light, moves well,
yet is strong and durable. It stands aside for none.
The hippopotamus is among the most aggressive
creatures in the world, and is regarded as one of the
most dangerous animals in Africa. The long, thick,
5
Lowest Cost of Ownership
Owners, users and managers make
decisions on the acquisition and
ongoing use of many different assets,
including items of equipment.
The initial capital outlay cost is usually clearly defined
and is a key factor influencing the choice of asset,
when given a range of alternatives from which to
select.
Estimated Loadcase
FEM
Measurement
Actual Life
Estimated Life
Fatigue Calculations
The initial capital outlay cost, however, is only one
portion of the cost over an asset’s life cycle that needs
to be considered in making the right choice for asset
investment.
The total cost of ownership of an
asset is often far greater than the
initial capital outlay cost...
The total cost of ownership of an asset is often far
greater than the initial capital outlay cost and can
vary significantly between alternative solutions to a
given operational need. Consideration of the costs
over the whole life of an asset provides a sound basis
for decision-making.
Correlation with actual life
6
World Class Design & Construction
Robotic welding processes
Finite element analysis
Lowest cost of ownership
3D Design
ADR & SANS 1518 Approval
State-of-the-art manufacturing
equipment
7
World Class Design & Construction
Banded construction with aluminium
T-section stiffeners.
Elliptical shape as required and approved by ADR.
Tank shell and dish constructed with aluminium
5.2 mm thickness.
ECE-approved rear under-run protection.
Extruded valance welded to tank top from kingpin
to rear with transverse members. Water drains
through four 40 mm front and rear internal tubes.
Closed system through valance and internal
down pipe. Coaming vent fitted inside valance is
normally open for vapour recovery.
Structural rib (Aluminum extrusion)
Carbon steel rubbing plate.
Robotic welded dish and circular welds.
A simple 2-speed gearbox
unit with round, swirled feet
to carry full laden weight.
Lightweight fabricated aluminium
chassis.
Shell Plate
8
Dish Plate
Shell Plate
500 mm-diameter bolt-down
manlids with 250 mm hinged
lids and emergency venting
function,
with
pressure
and vacuum vents fitted to
each manlid. Every manlid
is fitted with optic overfill
sensors with gantry socket as
standard. Pneumatic sensors
offered as an option.
Tank exterior is either painted or
applied with corporate livery to
customer specification. An etched
finish is available as an option.
The tank interior is etched only.
Mandatory safety decals are
applied to all tankers.
World Class Equipment
450 mm rear ladder.
High-level combination marker lights.
Marker lights.
Handrail: two-piece, one side hinged
handrail opening to the off side.
Optional: Dual handrail.
A homogeneous control panel
on all the individual units. A
fresh look of neatness and
professionalism.
Dual winch spare-wheel carrier mounted
behind landing legs.
Aluminium drip tray with single
or dual guard bar protecting
load couplings, with drive-away
prevention system.
Plastic moulded fire extinguisher
box one on each side.
LED-type tail/brake/indicator/reverse/
fog lights.
DAC-R: Pneumatic-pipe and
electric-cable routing-andclamping system that allows
direct and improved ease
of access during diagnostic
testing and replacement.
Plastic moulded wheel
chocks with retaining
cables.
Top and bottom guard bars for
improved safety.
Four plastic road cones in
secured holder.
Mudguards: Plastic single-wheel
type with spray-suppression mud
flaps fitted to each mudguard.
Lockable 580 x 400 x 450 mm
toolbox in moulded plastic
located on one side.
9
Bottom Loading Equipment
Direct Discharge Lines Option (SPD)
Bridging Option
PD Metered Option
Bartec Electronic SPD Option
The Sealed Parcel Delivery System (SPD)
process begins when a compartment
is sealed after loading a fuel tank. The
seal remains unbroken until delivery is
made to the customer, at which point the
compartment is completely emptied.
Transportation of fuel in bulk loads from
the refinery to the terminal is usually
referred to as a bridging delivery.
Distribution of fuel to retailers (garages)
requires smaller delivery quantities
that are measured through a metering
system.
An electronic control system for fuel tanks
that controls bottom valves, pneumatic
valves and doors. Also monitors contents
of fuel level that have been loaded using a
calibrated measurement system.
This system ensures that the quantity
originally loaded at the terminal matches
exactly with the quantity delivered to the
customer.
10
Bridging vehicles can load and discharge
all compartments through one inlet and
one outlet.
All compartments can be discharged at
the same time effecting a reduction of
handling and turnaround time.
Fuel is discharged from a compartment
on the vehicle through a sealed meter
that has been tested for accuracy.
Each meter has a ticket-printing
mechanism that prints a delivery receipt
showing the exact amount of fuel
delivered to the customer.
The advantages of the system include:
• Identifies product contamination due
to driver error.
• Monitors theft in all components of the
system.
• Provides accurate metering system for
SPD
• Accurately measures loaded quantity.
• Monitors quantity in each compartment
facilitating maximum theft control.
• Sustains high flow rates: ± 900-1000 L/
min vs ± 400-600 L/min on PD meters.
• Effects faster turnaround time through
multiple discharge, and higher flow
rates.
• Affords a lower tare weight than the
conventional metered system.
• Eliminates moving and wear-susceptible
parts.
Dynamic Design
Performance-Based Standards
Performance-Based Standards (PBS) is a procedure in the heavy vehicle sector. Standards are set to specified desired outcomes for the operation of a vehicle on a network, as opposed
to how these outcomes should be achieved. They directly measure rollover tendency, stability, road-width used and pavement wear. Road Transport Management System (RTMS)
certification is a prerequisite for participation in the PBS scheme.
The traditional approach of regulating heavy vehicles is prescriptive, enforcing limits to vehicle mass and dimensions. This is easy to carry out but does not always ensure the vehicle
is safe and efficient.
The PBS approach allows for safer vehicles with more payload while reducing road wear and CO² emissions per tonne of payload transported.
Dynamic Engineering
GRW will design and manufacture in accordance with the standards of diverse countries. We have successfully delivered tankers to:
ANGOLA
AUSTRALIA
NAMIBIA
BOTSWANA
SOUTH AFRICA
SUADI ARABIA
DRC
IRELAND
TANZANIA
KENYA
UAE
MALAWI
UK
MAURITIUS
ZAMBIA
MOZAMBIQUE
ZIMBABWE
11
Imvubu Configurations and Models
1360
1987
2575
6667
9877
Imvubu 33
12
1360
1360
2493
1360
2575
1360
2594
1340
10000
11743
Imvubu 39
1320
1320
1320
5987
3685
3645
3660
1320
2600
3644
We offer a large choice of aluminium fuel tanks in a range of designs. Tankers can be designed to match requirements: from the number of compartments through to capacity.
1360
9686
Imvubu 50
1360
1816
Imvubu 55
Length
9 877 mm
11 743 mm
13 969 mm
14 832 mm
Width
2 600 mm
2 600 mm
2 600 mm
2 600 mm
Height
3 660 mm
3 690 mm
3 644 mm
3 685 mm
Unladen coupling height
1 320 mm
1 320 mm
1 320 mm
1 320 mm
Ride height
420 mm
420 mm
420 mm
420 mm
Wheelbase
5 987 mm
6 667 mm
10 000 mm
9 686 mm
Tare weight
5 400 - 5 600 kg
6 150 - 6700 kg
6 300 - 7 000 kg
8 020 kg
Design capacity
33 000 L
39 000 L
50 000 L
55 000 L
Compartments
5
5/6
4/5/7
4
Payload (petrol)*
30 100 L
37 100 L
46 000 L
53 000 L
Payload (diesel)*
26 500 L
32 660 L
40 480 L
46 700 L
Total permissible weight
36 000 kg
42 000 kg
42 000 kg
50 000 kg
Permissible payload
22 125 kg
27 270 kg
33 800 kg
39 000 kg
Permissible axle load
18 000 kg
24 000 kg
24 000 kg
32 000 kg
Axle distance
1 360 mm
1 360 mm
1 360 mm
1 360 mm
Tyres
315/80 R22.5
385/65 R22.5
385/65 R22.5
425/65 R22.5
Rims
9 x 22.5 aluminium or steel
11.75 x 22.5 aluminium or steel
11.75 x 22.5 aluminium / steel
11.75 x 22.5 aluminium / steel
Axles
9 Ton
9 Ton
9 Ton
9 Ton
Track / spring centre
1 920/1 000
2 140/1 300
2 140/1 300
2 140/1 300
Brakes
Disc brakes
Disc or drum brakes
Disc or drum brakes
Disc or drum brakes
EBS System
4S/2M EBS multivoltge to ECE R13
4S/2M EBS multivoltge to ECE R13
4S/2M EBS multivoltge to ECE R13
4S/2M EBS multivoltge to ECE R13
Air tanks
Mild steel with manual drain valves
Mild steel with manual drain valves
Mild steel with manual drain valves
Mild steel with manual drain valves
Suspension
Air suspension
Air suspension
Air suspension
Couplings
F&J quick couplers fitted to centre front dish. 7 F&J quick couplers fitted to centre front dish. 7 F&J quick couplers fitted to centre front dish. 7
Pin ISO 7638 female plug for EBS power.
Pin ISO 7638 female plug for EBS power.
Pin ISO 7638 female plug for EBS power.
Air suspension
F&J quick couplers fitted to centre front dish. 7
Pin ISO 7638 female plug for EBS power.
Lifting axle
Optional
Optional
Optional
Optional
Hubodometer
Optional
Optional
Optional
Optional
* Tare and Truck Tractor dependent
1360
14832
13969
Bartec To Measure is To Know
The only way to accurately monitor and quantify product loss is to have full visibility
of the entire cycle of fuel transport. This requires that the gross and temperaturecompensated (net) volume be known and recorded at the initial loading point.
This volume must then be metered and checked for discrepancies when the load is
delivered.
Currently, the only product that accurately provides this complete perspective is
the electronic dipstick system.
This system consists of individual electronic dipsticks fitted in each tanker
compartment. The volume in the compartments is precisely measured during all
operational steps of the transport cycle. This system ensures that the gross and net
volume loaded and the gross and net volume discharged are accurately recorded. If
the two sets do not tally within a certain prescribed tolerance, there has most likely
been foul play.
Together with this functionality there are further benefits to using such a system:
It is essentially a metered SPD delivery at 1200 ℓ/min – a significant increase when
compared to the maximum of 700 ℓ/min on conventional meters.
Since there is an API for each compartment, three simultaneous deliveries can
effectively be delivered at 3000 ℓ/min. Since there are no wear items, metering
tolerance does not drift. The system also checks the pipe volume before each
delivery and thus monitors loss of product from the pipework.
An ‘empty’ check is performed before initial loading of each delivery to confirm
whether the compartment is indeed empty or not. This integrated function would
obviates the need for personnel to climb onto the tank to check for LOBs, which
mean that the ladder and handrail can be removed if the operation allows.
The system can easily be combined with an SPD-valve-monitoring system (SPDS)
so that the APIs and manlids are constantly monitored for any operation that
interferes with the normal sequence of the system.
GRW, in partnership with BARTEC (renowned suppliers of Ex equipment), has
introduced BARTEC’s Volutank system with great success into the South African
market. More than 200 tankers are currently measuring and monitoring their fuel
with the Volutank system.
13
GRW Warranty
Item
Manufacturer
Period of cover
Parts
Labour
Tank (Structural, normal use)
GRW
5 years
Yes
Yes
Rear chassis
GRW
5 years
Yes
Yes
Rubbing plate
GRW
1 year
Yes
Yes
Painting
GRW
5 years
Yes
Yes
Pipework (metal)
GRW
1 year
Yes
Yes
Hydraulic hoses
GRW
6 months
Yes
No
Pneumatic control hoses and fittings (including air leaks)
GRW
1 year
Yes
Yes
Brake system pneumatic hoses and fittings (including air leaks)
GRW
1 year
Yes
Yes
Support brackets
GRW
1 year
Yes
Yes
Hose tray
GRW
1 year
Yes
Yes
Ladder
GRW
1 year
Yes
Yes
Handrails and brackets
GRW
6 months
Yes
Yes
* Subject to terms and conditions.
Cape Town
Durban
Johannesburg
Worcester
1 Van Eck Street, Sacks Circle
Industrial
Bellville South, 7530
12 Fangio Place
Westmead, 3610
38 Denne Road (cnr of Salinga Rd)
Witfield X3, Boksburg, 1459
20 Abattoir Road
Worcester, 6850
P.O.Box 199
Kraaifontein 7569, Western Cape
PO Box 82754
Southdale, 2135
PO Box 82754
Southdale, 2135
P. O. Box 5065
Worcester, 6849
Tel: +27 21 987 2811
Fax: +27 21 987 2824
Tel: +27 31 700 6676
A/H: +27 71 627 8168
Tel: +27 87 310 4316
Fax: +27 86 666 3131
Tel: +27 23 348 6300
Fax: +27 23 347 3895
www.grw.co.za
15