MÁV Co. Transport Safety Project (KözOP)
Video Track Inspection System (VPR)
Installed Vehicle Diagnostic equipment
Tamás Both
commissioned head of department
7th February 2013
Elements of the present track inspection system
• Inspection on foot
– inspection on foot by patrolmen
– Inspection on foot by track-master, chief track-master,
section engineer
• Examinations and measurement in turnouts
• Line inspection on railway vehicles
• Inspection of engineering structures (bridges,
culverts, tunnels, etc.)
• Track geometrical measurements
• Ultrasonic rail inspection
• Clearance gauge measurements and examinations
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VPR structural scheme
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Main features of video track inspection
system (VPR)
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Able to execute the examinations without disturbing the traffic till the
speed of 120 km/h with self-propelled diesel vehicle
Measurement by non-contact method, with laser optic principle, on
the base of video records
Able to take clear pictures by digital high-speed and low-noise
cameras
Minimum examination width counted from the track axis 1,75-1,75
m
Its two main functions: recording the structural elements of the
railway track and panoramic record
Able to examine and automatically evaluate 40 - 45 measuring
parameters
Able to supply local fault list
Makes a statistical list for a chosen measuring length
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Aim of VPR
• Decreasing of the risk of transport safety and work
safety
• Updating of track inspection activity, track inspection
system and procedures,
• Increasing the objectivity of track inspection
examinations,
• Accurate and traceable documentation of the track
state and its change,
• Accurate identification of the structural elements of te
railway track,
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Advantages of VPR
State of the art technology
Decreases the subjectivity of track inspection
Suitable for objective qualification of the structural state
Early recognition of rail faults with cracks (Head Check)
Suitable for objective examination of high-speed lines
Live-labour and cost-efficient solution
Risks of traffic safety and work safety decrease
Enables the accurate documentation of track state and its
change, the more efficient designing of elimination of faults and
disturbances
• Ensures the classification of local faults, and supplies the fault list
depending on the speed and size-limit category
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Realisation of VPR
VPR Recording Cars and measuring systems
1.) Vehicle_1
1.) Vehicle_2
1.) Vehicle_3
VPR-1
VPR-2
VPR-3
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Realisation of VPR
• Incorporation 3 pcs VPR recording cars into system
• Within the frames of KÖZOP supporting contract:
– Procurement of 3 pcs VPR vehicles
– Procurement of 3 pcs VPR measuring systems
• Tender calling for public procurement of negotiation
• Testing, training of the structural elements of MÁV Co’s
lines
• Further development of VPR measuring system and
evaluation software
• Modification of track inspection regulation (D5), approval
by the authority
• Incorporation VPR into system
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Characteristics of VPR measuring system
• 3 pcs VPR measuring systems
• Contact free examination
• Its external measuring boxes (beams) are located inside the
railway clearance gauge.
• It can examine and supply measuring data at least at 120 km/h
speed range
• Each record is synchronised with the railway chainage
• Applies the MÁV database
• Recording the structural elements of the railway track
• Panoramic record
• Determination of the faults of the structural elements
• Office evaluating and processing system
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Characteristics of VPR vehicle
• 3 db diesel railcars transformed according to the requirements
of VPR recording car
• serves as accommodation for VPR measuring system and staff
• Ensures connecting points for mounting the VPR measuring
system
• With two engine driver’s cabins
• 120 km/h allowed and measuring speed
• Ensures the accommodation of 6 persons
• Air-conditioned
• Measuring room, sleeping compartments, dining room, lavatory,
technical rooms
• Supplying the electric energy necessary for the operation of VPR
measuring system
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VPR evaluation, examination report
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VPR evaluation, examination report
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Installed vehicle dynamic equipment
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Hazard point
Sensor
Hot bearing (vehicles with hot box)
Hot bearing signal
Jammed, stickked brakes (braked wheels)
Flat wheel
Dynamic wheel load meter and wheel flat detector
Overloaded vehicles
Moved consignment, uneven consignment distribution
Broken axles, body-springs
Over-reaching the loading gauge
Loading gauge checker
Wheels under tolerances
Wheel flange checker
Faulty pantograph
Pantograph detector
Contact pressure (between pantograph and contact wire)
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Accident occurred due to hot bearing in Italy
– June 29th 2009 23:48
Viareggio (IT):
– 32 victims, 267 seriously
injured people
– Due to the breaking of an
axle pivot the first 7 wagons
of the freight train consists of
14 wagons derailed, from
these 5 overturned, one tank
ripped, gas (butane)
spread, then blow up.
– Victims emerged from the
population, rescue teams
found 7 victims under the
collapsed houses.
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Hot-bearing detectors operating on MÁV Co’s network
Kisvárda
Szerencs
Nyírbogdány
Rajka
Hegyeshalom
Szob
Füzesabony
Hatvan
Győr
Tatabánya
Püspökladány
Szombathely
Cegléd
Székesfehérvár
Szajol
P.szabolcs
Mezőtúr
Kunszentmiklós
Zalaegerszeg
Rétszilas
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Necessity and aim of dynamic wheel-load
measurement
• Development of such a diagnostic equipment which registers and
filters out the running of vehicles dangerous from transport safety
aspect.
• Operation of the system enhances the safety of railway transport,
• Decreases significantly the maintenance costs of the railway network
and accident damage restoration costs originating from the technical
state of the vehicles, or improper loading.
• Gives information concerning the actual mass of the coach and trainset which is a relevant element of the statement of network access fee
(track access fee).
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Loading gauge monitoring equipment
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Thank you for your attention