GRW Fuel Tankers

Engineering Excellence

CONTENTSChapter Page

1. Engineering Excellence 3

2. Imvubu Overview 4

3. Imvubu Meaning 5

4. Lowest Cost of Ownership 6

5. World Class Design and Construction 7

6. Bottom Loading Equipment 10

7. Dynamic Design 11

8. Imvubu Configurations and Models 12

9. Bartec to Measure is to Know 13

10. GRW Warranty 14

11. Our Offices 15

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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 fast-moving consumer goods to perishable temperature-controlled goods as well as palletised goods and break-bulk 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.

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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.

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.

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

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.

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.

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 Overview

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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.

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.

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,

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.

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.

Imvubu Meaning

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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.

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 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.

Estimated Loadcase FEM

Estimated LifeActual Life

Correlation with actual life

Measurement

Fatigue Calculations

The total cost of ownership of an asset is often far greater than the

initial capital outlay cost...

Lowest Cost of Ownership

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Lowest cost of ownership

Robotic welding processes

Finite element analysis

State-of-the-art manufacturing equipment

3D Design

ADR & SANS 1518 Approval

World Class Design & Construction

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World Class Design & Construction

Banded construction with aluminium T-section stiffeners.

Elliptical shape as required and approved by ADR.

Robotic welded dish and circular welds.

Carbon steel rubbing plate.

Dish Plate

A simple 2-speed gearbox unit with round, swirled feet to carry full laden weight.

Lightweight fabricated aluminium chassis.

ECE-approved rear under-run protection.Tank shell and dish constructed with aluminium 5.2 mm thickness.

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)

Shell PlateShell 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 sensorsoffered 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.

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Plastic moulded fire extinguisher box one on each side.

Dual winch spare-wheel carrier mounted behind landing legs.

Four plastic road cones in secured holder.

Plastic moulded wheel chocks with retaining cables.

LED-type tail/brake/indicator/reverse/fog lights.

High-level combination marker lights. Handrail: two-piece, one side hinged handrail opening to the off side.Optional: Dual handrail.

450 mm rear ladder.

Marker lights.

World Class Equipment

DAC-R: Pneumatic-pipe and electric-cable routing-and-clamping system that allows direct and improved ease of access during diagnostic testing and replacement.

Mudguards: Plastic single-wheel type with spray-suppression mud flaps fitted to each mudguard.

A homogeneous control panel on all the individual units. A fresh look of neatness and professionalism.

Aluminium drip tray with single or dual guard bar protecting load couplings, with drive-away prevention system.

Top and bottom guard bars for improved safety.

Lockable 580 x 400 x 450 mm toolbox in moulded plastic located on one side.

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Direct Discharge Lines Option (SPD)

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.

This system ensures that the quantity originally loaded at the terminal matches exactly with the quantity delivered to the customer.

PD Metered Option

Distribution of fuel to retailers (garages) requires smaller delivery quantities that are measured through a metering system.

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.

Bartec Electronic SPD Option

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.

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.

Bridging Option

Transportation of fuel in bulk loads from the refinery to the terminal is usually referred to as a bridging delivery.

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.

Bottom Loading Equipment

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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

NAMIBIA

MALAWI

ZAMBIA

MAURITIUS

ZIMBABWE

MOZAMBIQUEKENYA

UK

AUSTRALIA

SOUTH AFRICA

IRELAND

UAE

BOTSWANA

SUADI ARABIA

DRC

TANZANIA

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Imvubu 33 Imvubu 39 Imvubu 50 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 Air suspension

Couplings F&J quick couplers fitted to centre front dish. 7 Pin ISO 7638 female plug for EBS power.

F&J quick couplers fitted to centre front dish. 7 Pin ISO 7638 female plug for EBS power.

F&J quick couplers fitted to centre front dish. 7 Pin ISO 7638 female plug for EBS power.

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

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.

* Tare and Truck Tractor dependent

59871360

3660

9877

1987

1320

260011743

66671360 1360 2493

1320

3645

2575

13969

10000

1360 1360 1340

3644

1320

2575

14832

13601360 1360 1816

3685

9686

2594

1320

Imvubu Configurations and Models

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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 temperature-compensated (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.

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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.

GRW Warranty

www.grw.co.za

Worcester

20 Abattoir RoadWorcester, 6850

P. O. Box 5065Worcester, 6849

Tel: +27 23 348 6300Fax: +27 23 347 3895

Durban

12 Fangio PlaceWestmead, 3610

PO Box 82754Southdale, 2135

Tel: +27 31 700 6676A/H: +27 71 627 8168

Johannesburg

38 Denne Road (cnr of Salinga Rd)Witfield X3, Boksburg, 1459

PO Box 82754Southdale, 2135

Tel: +27 87 310 4316Fax: +27 86 666 3131

Cape Town

1 Van Eck Street, Sacks Circle Industrial

Bellville South, 7530

P.O.Box 199Kraaifontein 7569, Western Cape

Tel: +27 21 987 2811Fax: +27 21 987 2824

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