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David Collett

Managing Director – Collett Group, UK

President – ESTA European Association of Abnormal Road Transport and Mobile Cranes

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New ESTA guidelines on the operation of self propelled modular transporters (SPMT)

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Working Group

Collett Group Operator UKFagioli Operator ItalyGoldhofer Manufacturer GermanyMammoet Operator NetherlandsRDW Road agency NetherlandsSarens Operator BelgiumScheuerle/Tii Manufacturer GermanyShell Industry client NetherlandsThe Works Int’l Consultant ArubaWagenborg Nedlift Operator Netherlands

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Question 1 - When should an SPMT be employed ?

• 1 x 6 axle unit to do a quick ‘Taxi’ job to move a 30 Tonne condenser • ?• ?• 4 x 100 axle units to carry out a Large load-out of 1,680 Tonne Module

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Question 2 - When should Transport engineering be carried out ?

• 1 x 6 axle unit to do a quick ‘Taxi’ job to move a 30 Tonne condenser • ?• ?• 4 x 100 axle units to carry out a Large load-out of 1,680 Tonne Module

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Contents 1 The responsibility triangle 1.1 The different players in the triangle

1.2 The lines of communication

2 The equipment 2.1 Regional guidelines and regulations 2.2 Design of the equipment 2.3 Capacity of the equipment2.4 Maintenance of the equipment 2.5 Documentation and information to be provided with the equipment

3 The load 3.1 Design of the load 3.2 Documentation and information about the load

4 Training 4.1 Skill, experience and competence 4.2 Training framework for operators4.3 Training framework for engineers

5 Engineering a transport

6 Preparation of a transport 6.1 Work environment 6.2 Documents and procedures

7 The transport 7.1 The operators 7.2 Final checks7.3 Bringing a load onto/discharging a load from the transporter 7.4 Moving the transporter

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1. The Responsibility Triangle

• Manufacturer• Operating Company• Client

Operating Company

ClientManufacturer

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4. Training

• No Driving License available• Assess on Skill, Experience and Competence

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5 Step competence assessmentLevel 1: None experienced SPMT operator; Followed the manufacturer’s training. Will be trained on standard jobs under the supervision level 4 or level 5 SPMT operators. Not allowed to work independently at any time. Level 2: Moderate experienced SPMT operator; Capable to work on standard jobs under the supervision of level 4 or level 5 operators. Level 3: Experienced SPMT operator; Capable to work on standard jobs without further supervision, capable to work on complex jobs under supervision of level 4 operators. Level 4: Highly experienced SPMT operator; Capable to take the lead in standard jobs and to work on complex jobs without further supervision. Capable to supervise less experienced colleagues. Level 5: Supervisor; Capable to take the lead in complex jobs and to supervise less experienced colleagues. Authorised to instruct less experienced colleagues in order for them to increase their competence level, authorised to sign-off competence form of less experienced colleagues.

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5. Engineering a Transport movement

• A need for Engineering• A Question of Strength and Stability

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First degree is based on Static calculations

1. Based on simple SPMT configurations2. Verification of Strength and Stability of the

loaded SPMT3. Ground level to be used as datum line for

calculating ‘tipping angle’4. Combination of the SPMT and the load to

ascertain the true Centre of Gravity (CoG)5. Maximum capacity of 75% of theoretical

maximum capacity of SPMT6. Minimum tipping angle of 7 degrees is

considered7. Plus 2 degree above any known or existing

ground/route conditions to allow for cambers and inclinations

8. Maximum of 70% of the hydraulic lift/lower capacity of the SPMT to be calculated for levelling and axle stroke on ground conditions

Second degree is based on Dynamic calculations

1. First degree engineering plus2. Complex SPMT configurations3. Consider dynamic forces, Wind loadings,

inertia, acceleration/deceleration, Braking, Cambers, Tyre deflection, Second order calculations

4. Maximum capacity of 90% of theoretical maximum capacity of SPMT

5. Minimum tipping angle of 5 degrees is considered

6. Plus 2 degree above any known or existing ground/route conditions to allow for cambers and inclinations

Two levels of Engineering considered

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Example of how Stability is calculated

Take a simple load - 8.5m x 4.2m x 5.6m HighWeight - 100,000 Kgs

Assuming a central point CoG (Centre of gravity) of the load

Load centrally on to a 10 line SPMT

Assume 3 or 4 point suspension and locate centre point of each hydraulic group(3 point suspension in this case)

Assume ground level as the tipping point

Work out the C of G of the combination of load and SPMT using Cartesian coordinates X, Y, Z

Work out the distance from the C of G to the edge of the ‘Stability Triangle’

Triangulate to give ‘Tipping angle’ in degrees

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Example of how Stability is calculated

By moving the load in the rear direction on the SPMT by, for instance 600mm, this has two effects.

1. Alters the axle loadingsIn this case, reduces the maximum axle loadings

2. Alters the Tipping angleIn this case, increasing the angle and so increasing stability

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DNV and GL Noble Denton Merged September 2013

DNV GL is an international certification body and classification society with main expertise in technical assessment, advisory, and risk management

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Thank you