TÜV SÜD Sava d.o.o.
Čakovec, 27-02-2020
By: Davor Jelačić dipl. ing.
Auditor acc. to EN15085 and DIN
27201
Welding of Railway Vehicles - Quality Assurance
Content:
1.
2.
3.
4.
5.
6.
7.
9.5.2024.
Development and structure
of EN 15085
Key Terms
Welding Shop Requirements
Design Requirements
Production Requirements
Quality Control,
Testing/Inspection and
Documentation
Maintenance of Railway
Vehicles by Welding
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
2TÜV SÜD Grupa
www.tuv.hr
Welding of Railway Vehicles - Quality Assurance
1. Key Terms
3. Design
Requirements EN
15085-3
Quality
Assurance
4. Production Requirements
– EN 15085-4
2. Welding Shop
Requirements
5. QC,
Inspection/testing and
Documentation
6. Maintenance by
Welding –EN15085-6 NEW
7. Conclusion
Prasentation Content
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
TÜV SÜD Grupa
www.tuev-sued.de
Welding of Railway Vehicles - Quality Assurance
Content:
1.
2.
3.
4.
5.
6.
7.
9.5.2024.
Development and structure
of EN 15085
Key Terms
Welding Shop Requirements
Design Requirements
Production Requirements
Quality Control,
Testing/Inspection and
Documentation
Maintenance of Railway
Vehicles by Welding
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
4TÜV SÜD Grupa
www.tuv.hr
Development and Structure of EN 15085
– until 1997 - DB-Druckschriften DS 952 01 and
DS 952 02.
– from 07:1997 to 12:2007 – DIN 6700 Part 1 –
6
– 2006 DVS Mb 1622 published to complete the
requirements of DIN 6700
– 01:2008 –EN 15085 Part 1 to 5 published
– 2014 – work on new EN 15085 edition
commenced – amendment of Part 2, 3, 4 and
5 and compilation of new Part 6 –
maintenance and assembly EN 15085-7 –
welding shop conformity assessment
– New edition: EN15085-1 2013-11 and
pr.EN15085-2 2018-1
– DIN 27201-6: 2017:12 – maintenance of
railway vehicles
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
TÜV SÜD Grupa
www.tuev-sued.de
Welding of Railway Vehicles - Quality Assurance
2. KEY TERMS– EN 15085
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
6
www.tuv-sud.hr
EN 15085-1: Key Terms
Key terms:
 Safety category
 Safety relevance
 Stress categories
 Weld Class of Performance
 Class of Testing
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
7TÜV SÜD Grupa
www.tuv.hr
EN 15085-1: Key Terms
•
Safety category ac. to EN 15085 (consequences of default
•
of an individual weld)
Safety relevance acc. to new DIN 6700 (consequences of
default of an individual assembly)
high
Safety category /
relevance
medium
low
high
Stress
category
medium
low
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
8TÜV SÜD Grupa
www.tuv.hr
EN 15085-1: Key Terms
•
Class of Performance (CP)
Safety category
Stress categories
High
•
Medium
Low
High
CP A
CP B, in
the future
CP B2
CP C2
Medium
CP B in
the future
CP B1
CP C2
CP C3
Low
CP C1
Cp C3
CP D
CP
Class of testing (CT)
CP
CT 1
CT
CT 2
CT
CT 3
CT 4
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
9TÜV SÜD Grupa
www.tuv.hr
EN 15085-3: Design Requirements
•
Class of testing (CT):
CT
Volumetric
testing
Surface
inspection
VE
Certificate
Documentation
CT 1
(CP A)
100%
100%
100%
Yes
Requirement
100%
100%
100%
Yes
Requirement
CT 3
(CP C2)
-
-
100%
No.
Internal qualif.
Contract
CT 4
(CP C3, CP D)
-
-
100%
No.
Qual. welder
No
CT 2
(CP b, CP C1)
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
10
www.tuv-sud.hr
EN 15085-2: Welding Shop Requirements
3. WELDING SHOP
REQUIREMENTS acc. to EN
15085-2
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
11
www.tuv-sud.hr
EN 15085-2: Welding Shop Requirements
• Basic requirements:
– Welding shop must be certified
• DIN 6700-2: Welding certificate acc. to DIN 6700-2
• EN15085-2: Welding certificate scc. To EN 15085-2
• Companies that design, buy and install, or buy and sell welded components are also
WELDING SHOPS - appropriate qualification is required
• Certification levels for welding shops:
• DIN 6700-2: 5 component classes acc. to which certification levels for welding shops are
classifies - depending on the safety relevance.
• EN 15085-2 (ed. 2008): 4 certification levels – are determined according to the highest weld
class of performance (CP), for some assemblies CL 1.
Certification levels: CL 1 to CL 4
Acc. to highest weld CP
on welded parts
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
Assemblies with highest
safety category, CL1
certificate
12
www.tuv-sud.hr
EN 15085-2: Welding Shop Requirements
Certif.
Level
Welding shop can weld:
CL1
CP A to CP D
CL 1 includes CL 2 to CL 4
CL2
CP C2 to CP D. CP C1 can
also weld when tested acc.
to CT1.
CL 2 includes CL3 and CL4.
CL3
CP D
CL includes CL 4.
CL4
For shops which perform
design, buy and are
assemblying or which buy
and are assemblying welded
component of railwy
vehicles.
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
13TÜV SÜD Grupa
www.tuv.hr
EN 15085-2: Welding Shop Requirements
EN – components and sub-assemblies
– manufacturers with CL 1, see annex A
DE – Komponenten und Bauteile – Betriebe
mit CL 1, siehe Anhang A
Bogie frames and bolsters
Drehgestellrahmen und Drehgestellwiege
Body shell components (e.g. under frames, structures)
Fahrzeugrohbauten (z.B. Untergestell,Seitenwand, Aufbauten)
Buffers and draw gear
Zug und Stoßeinrichtungen
Wheel set components (e.g. Wheel set mountings, axle
boxes, spring supports)
Bauteile für Radsatzführung (z.B. Radsatzhalterungen,
Radsatzlagergehäuse, Federböcke)
Brake equipment (e.g. Magnetic track brake, brake rods,
brake triangles, brake cylinders, brake cross beams)
Bremsausrüstung (z.B. Magnet-schienebremse, Zugstangen,
Bremsdreiecke, Bremszylinder, Bremstraversen)
Supporting frames for heavy components (e.g. Traction
units, pantographs)
Tragrahmen für schwere Komponenten (z.B. Antriebsaggregate,
Stromabnehmer)
Welded components for drag transmission from bogie to
vehicle
Anschweißteile für Zugkraftübertragung vom Drehgestell zum
Fahrzeug
Vibration dampers and their link between bogie and vehicle
or between vehicles
Schwingungsdämpfer und deren Anbindung zwischen
Drehgestell und Fahrzeug bzw. Zwischen den Fahrzeugen,
Finishing welding of castings within components indicated
above
Fertigungsschweißen von Gusstücken and vorgenannten
Bauteilen
External fuel tanks
Äußere Kraftstofftanks
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
14TÜV SÜD Grupa
www.tuv.hr
EN 15085-2: Welding Shop Requirements
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
15TÜV SÜD Grupa
www.tuv.hr
NEW prEN 15085-2 11:2018 Welding Shop Requirements
•
•
•
•
prEN 15085-2, ed. 11:2018: „Certification
level becomes Classification level (CL)
Component classification levels depend on
safety relevance of the component in
question.
List of components classified in Classification
Class CL 1
Only welding shops with CL 1 can weld
components with high safety relevance.
9.5.2024.
Classification
level CL
Welding shop can
weld the following:
CL 1
Welded component
with high safety
relevance
CL 2
Welded component
with medium safety
relevance
CL 3
Welded component
with low safety
relevance
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
16
www.tuv-sud.hr
NEW prEN 15085-2 11:2018 Welding Shop Requirements
• pr EN 15085-2
(2018): marking on
the certificate is
amended by adding
the term Scope of the
Welding Shop
D: design
P:
Production
Scope
M;
Maintenance
S: Purchase
and Supply
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
17
www.tuv-sud.hr
NEW prEN 15085-2 11:2018 Welding Shop Requirements
• Quality assurance system for welding shops – acc. to
EN ISO 3834
• Link between classification levels and EN ISO 3834
• Certificate acc. to EN ISO 3834 not a condition!
Classification
levels CL
Quality
assurance
requirements
acc. to EN ISO
3834
CL 1
ISO 3834-2
CL 2
ISO 3834-3
CL 3
ISO 3834-4
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
18
www.tuv-sud.hr
NEW prEN 15085-2 11:2018 Welding Shop Requirements
•
Requirements for welding supervisor:
–
–
–
–
–
–
3 welding supervisor levels, level A, B and C
Prove that they possess technical knowledge for classification class CL
Work experience of min. 3 years,
Duties and responsibilities acc. to ISO 14731 and EN 15085 Annex B
In EN 15085-2: Annex with special technical requirements for welding supervisor
Certification acc. to IIW guidelines not required
Welding superviosr level
Level A
Extended technical
knowledge acc. to ISO 14731
Level B
Specific technical knowledge
acc. to ISO 14731
Level C
General technical knowledge
acc. to ISO 14731
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
19
www.tuv-sud.hr
EN 15085-3: Zahtjevi za konstruiranje
4. DESIGN REQUIREMENTS acc.
to 15085-3
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
22
www.tuv-sud.hr
EN 15085-3: Design Requirements
• EN 15085-3 defines:
 Weld Class of Performance (CP)
 Design rules
 Drwing data.
• This standard does not define sizing parameters for railway
components, see e.g. EN 12663 and EN 13749
• Alternatively, the allowed stresses
obtained as a result of dynamic strength
tests on representative samples may be
used in the design.
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
23
www.tuv-sud.hr
EN 15085-3: Design Requirements
Weld Class of Performance CP
Safety category
(failure risk
assessment)
9.5.2024.
Stress category
Access for
inspection
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
Full penetration
weld
24
www.tuv-sud.hr
EN 15085-3: Design Requirements
•
Class of testing (CT):
CT
Volumetric
testing
Surface
inspection
VE
Certificate
Documentation
CT 1
(CP A)
100%
100%
100%
Yes
Requirement
100%
100%
100%
Yes
Requirement
CT 3
(CP C2)
-
-
100%
No.
Internal qualif.
Contract
CT 4
(CP C3, CP D)
-
-
100%
No.
Qual. welder
No
CT 2
(CP b, CP C1)
•
9.5.2024.
Additionally for CT 2: if for BW with CP B2 or CP C1 volumetric
examination due to partial penetration is not possible – mock-up + surface
tests 100% for first 5 parts, then 25%.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
25
www.tuv-sud.hr
EN 15085-3: Design Requirements
•
•
„Without the possibility for a volumetric test” make no sense for fillet
welds and other welds without full penetration (e.g. for Y / HY)
Joints with weld performance class CP A, CP B and CP C1, which can be
inspected during production but cannot be inspected and repaired in
maintenance, shall be allocated to the NEXT HIGHER INSPECTION CLASS
acc. to the table or the stress level shall be reduced
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
26
www.tuv-sud.hr
EN 15085-3: Design Requirements
•
•
Design of welded joints:
Following shall be avoided:
– sudden changes in cross
section,
– local accumulation of welds
– Welding in cold formed
areas
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
27TÜV SÜD Grupa
www.tuv.hr
EN 15085-3: Design Requirements
• Rules for design of welded joints:
– Welded joints in high stress areas
– accessibility for welding and testing
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
28
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Rules for design of welded joints :
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
29
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Rules for design of welded joints :
9.5.2024.
Pripremio: Davor Jelačić, TUV SUD Sava Podružnica
Čakovec
30
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Rules for design of welded joints :
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
31
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Rules for design of welded joints :
– Edge distance for FW
– Minimum overlapping distance for overlapping welds
–
9.5.2024.
run-on and run-off plates for BW for CP A and CP B
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
32
www.tuv-sud.hr
EN 15085-3: Design Requirements
– Solutions to be avoided because residual stress can
cause cracks:
• welding round bars or pipes on thick plates – because the weld has
no possibility of free shrinking
• Welding of thin parts on thick plates
• Welding of ribs on thick-walled pipes
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
33
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Measures to improve the dynamic properties of welds (extension
of service life or increase of dynamic bearing capacity)
•
Reducing residual stress: processes for generating compressive stresses, eg
shot blasting with metal shot or heat treatment
– Reduction of stress concentrations in the transition area between welds and
base material e.g. by grinding the transition area to a depth k≤0.3mm and
radius r≥3mm
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
34
www.tuv-sud.hr
EN 15085-3: Design Requirements
• Welded assembly drawings shall include:
1. Welded joints on drawings shall be marked with item No.
2. Weld shape + weld dimension + weld length
3. Weld Class of Performance (CP), electric resistance spot welding
additionally surface quality;
4. Dana on Class of Testing (CT) is required only when the same
deviates from the one stated in EN 15085-3 Table 3 acc. to the
corresponding CP
5. Certification level (CL)
6. Materials according to appropriate material standards
7. Filler metals for welding according to appropriate standards
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
35
www.tuv-sud.hr
EN 15085-3: Design Requirements
•
Welded assembly drawings shall include the following data:
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
36
www.tuv-sud.hr
EN 15085-3: Design Requirements
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
37
www.tuv-sud.hr
NEW prEN 15085-3 Design Requirements
• Amendments in the new EN
15085-3 edition:
– Weld symbols on drawings
according to ISO 2553
– Recommendations for
handling 3D models are likely
to be given as they replace
classic drawings
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
38TÜV SÜD Grupa
www.tuv.hr
Welding of Railway Vehicles - Quality Assurance
5. PRODUCTION REQUIREMENTS
acc. to EN 15085-4
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
39
www.tuv-sud.hr
EN 15085-4: Production Requirements
• practical rules for welding as well as rules
for qualification of welding procedures
(WPS) - taken from DIN 6700
• New in EN 15085 – Production weld tests
• Key elements of EN 15085-4:
– Documentation
– WPSs
– Production weld tests
– Welding requirements (preparation,
implementation, testing/inspection)
– Choice of filler metals
– Additional requirements for welding of
some types of base materials (e.g. cast
steel see EN 1011-8)
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
40TÜV SÜD Grupa
www.tuv.hr
EN 15085-4: Production Requirements
• Welding documentation:
•
– Working plans
– Welding sequence plans
– Testing plans
– Welding procedure specifications (WPS)
Working plan is required for bogies, body shell
components and structures
•
•
9.5.2024.
For more complicated assemblies, Welding
Sequence Plans are required
Additional welding documentation: Acceptance
welding plans, Repair instructions, Drawings of
devices or tools, operating instructions, etc.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
41TÜV SÜD Grupa
www.tuv.hr
EN 15085-4: Production Requirements
• Production weld tests (PWT) can be welded as:
– testing plate,
– mock-up or
– zajedno sa dijelom/sklopom, npr. u produžetku dotičnog
zavara / together with the part / assembly, e.g. in an extension
of the weld in question.
• Purpose of PWT:
1. In the design phase to check welding possibilities (e.g.
due to limited access)
2. To control the welding process (for welds with partial
penetration),
3. PWT to test the qualification (skill) of welders - for
joints that require special skills of welders
4. PWT as proof of weld quality (e.g. when for CT 2 welds
there is no possibility of RE (radiographic) or UE
(ultrasound examination) due to incomplete welding)
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
42TÜV SÜD Grupa
www.tuv.hr
EN 15085-4: Production Requirements
• CP defines methods and requirements for the
qualification of WPS:
• For CP A:
– Qualification according to ISO 15614-1; according to ISO
15613 only if WPQR according to ISO 15614-1 already
exists. For materials with ReH> 500 MPa or mechanized
welding: ISO 15614-1.
– WPQR should meet the acceptance criteria for CP A
• For CP B, CP C1, CP C2:
– Qualifications acc. to ISO 15613, ISO 14555. Due to builtin material or welding process – acc. to ISO 15614-1
• For CP C3:
– Qualifications acc. to ISO 15610, ISO 15611, ISO 15612,
ISO 15613 or ISO 14555. Due to built-in material or
welding process – acc. to ISO 15614-1.
• CP D: acc. to customer requirements
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
43TÜV SÜD Grupa
www.tuv.hr
EN 15085-4: Production Requirements
•
•
•
•
•
•
•
9.5.2024.
Selection of filler metals and proof of compliance:
For non-alloy and low-alloy steels: the criteria are the
properties of the weld metal.
Weld properties should meet the requirements for basic
materials and the classification of filler metals from the
appropriate standard
For stainless steels: mechanical/technological properties of
filler metal correspond to the basic material.
When welding Al and AL alloys: EN 1011-4.
Filler metals meet the requirements according to EN 13479
and the corresponding EN ISO standards for the classification
of filler metals.
present a valid Certificate with information on the planned
welding process, materials, welding positions and type of
current.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
44TÜV SÜD Grupa
www.tuv.hr
NEW prEN 15085-4 Production Requirements
•
•
•
9.5.2024.
Some customers (e.g. DB)
require for filler metals a
certificate of conformity
according to EN 14532-1
issued by a Notified Body.
These certificates are available
online under www.en15085.net
The new edition of EN 15085-4
is likely to revise the chapter on
filler metals by adding
recommendations for the
selection of filler metals.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
45TÜV SÜD Grupa
www.tuv.hr
ASME Sec. IX – Development and Qualification of WPS
6. QC, TESTING/INSPECTION AND
DOCUMENTATION acc. to
EN 15085-5
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
46
www.tuv-sud.hr
EN 15085-5: Testing/Inspection and documentation requirements
•
•
•
•
9.5.2024.
Testing/Inspection before, during
and after welding
Requirements for the scope of
testing of performed welds and
required documentation
EN 15085-3 defines acceptance
criteria for VE of welds.
CP B, C and D are identical to the
acceptance criteria for welds B, C
and D according to EN ISO 5817
(for steel) or EN ISO 10043 for
aluminum alloys.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
47TÜV SÜD Grupa
www.tuv.hr
EN 15085-3: Design requirements
•
Class of testing (CT) /Schweißnahtprüfklassen:
CT
Volumetric
testing
Surface
inspection
VE
Certificate
Documentation
CT 1
(CP A)
100%
100%
100%
Yes
Requirement
100%
100%
100%
Yes
Requirement
CT 3
(CP C2)
-
-
100%
No.
Internal qualif.
Contract
CT 4
(CP C3, CP D)
-
-
100%
No.
Qual. welder
No
CT 2
(CP b, CP C1)
•
Additionally for CT 2: when volumetric testing is not possible with CP B
with medium safety category (CP B2) or with CP C1 – production weld test
+ 100% surface test share for the first 5 parts and then 25%.
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
48
www.tuv-sud.hr
EN 15085-5: Testing/Inepsction and documentation requirements
• Requirements for the
subcontracted manufacture of
welded assemblies:
– The subcontractor should meet the
requirements of this standard
– Subcontractor certificate
– Audit of the potential subcontractor
for CL 1 and CL 2 components
– Inform the end customer (user)
about the manufacturing of CL
1bein subcontracted
– With the new edition of EN
15085-5, it is likely that only
editorial changes will be
made and the cited
standards will be updated.
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
49TÜV SÜD Grupa
www.tuv.hr
EN 15085-6 Maintenance of Railway Vehicles by Welding Requirements
7. MAINTENANCE OF RAILWAY
VEHICLES BY WELDING acc. to
EN 15085-6 and DIN 27201
9.5.2024.
Pripremio: Davor Jelačić, TUV SUD Sava Podružnica
Čakovec
50
www.tuv-sud.hr
EN 15085-6 Maintenance by Welding - Requirements
• New EN 15085-6 is planned„Requirements for Maintenance by
Welding”
• Content taken from DIN 27201-6
• Railway vehicle operator is in charge of
maintaining his railway vehicle
• Each railway vehicle is assigned to
ECM (Entity in Charge of Maintenance)
which defines regulations
• The components of railway vehicles
are divided into 3 classes for
maintenance purposes:
– CL 1- welded components with high safety
category, CL 2- medium safety category
(see 5.1.2) and
– CL 3 – with low safety category
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
•
51TÜV SÜD Grupa
www.tuv.hr
EN 15085-6 Maintenance by Welding - Requirements
• Important topics in the new EN 15085-6:
– Components on which maintenance by welding is not
allowed - list
– Welding shop qualification acc. to EN 15085 for CL of the
certain component required.
– Additional requirements for welding supervisor (min. 2 years
experience in maintenance of railway vehicles or
appropriate internal qualification)
– Minimum requirement for the number and qualification of
welding supervision in the maintenance shop
– Maintenance documentation requirements (drawings,
instructions for use, data from the manufacturer as well as
regulations are the basis for maintenance)
– Handling of drawings that do not comply with EN 15085 –
old railway vehicles
– CP and range of testing and documentation depending on
CL of the certain component – see Chart 1 in DIN 27201-6
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
52TÜV SÜD Grupa
www.tuv.hr
8. CONCLUSION
9.5.2024.
By: Davor Jelačić, TUV SUD Sava branch office Čakovec
53
www.tuv-sud.hr
TÜV SÜD Sava branch office Čakovec
Davor JELAČIĆ
e-mail: davor.jelacic@tuvsud.com
TÜV SÜD Sava
Branch office Čakovec
Ivana Mažuranića 2
40000 Čakovec
Mobitel:++385(0)98 344 536
www.tuv-sud.hr
www.tuev-sued.de