1. Best practice – from the perspective of NoBo EN 1090
Zoltán GÖRBE, welding eng., ÉMI-TÜV SÜD Ltd., Hungary
Oslo, 24. april 2013.

2. Best practice - from the perspective of NoBo
TÜV SÜD is one of the world's leading technical service organisations

3. Best practice - from the perspective of NoBo
America:
Headquarter
TÜV SÜD America Inc.
Peabody, Massachusetts
Europe:
TÜV SÜD AG
München, Germany
Asia:
TÜV SÜD Asia Pacific Pte. Ltd.
Singapore
more than 17,000 employees
800 locations

4. Best practice - from the perspective of NoBo
About ÉMI-TÜV SÜD Ltd. (Hungary)
Headquarter: Szentendre
Offices: Budapest Nagykanizsa
since 1991
155 employees
8 departments
Hajdúnánás

5. Best practice - from the perspective of NoBo
Notified Body
Directives
87/404/EEC Simple Pressure Vessels
97/23/EC Pressure Equipment
95/16/EC Lifts
98/37/EC Machinery
89/106 EEC-CPD Construction products

6. Best practice - from the perspective of NoBo
What will be discussed?
5 questions - 5 answers
1. thermal cutting
2. tack welds
3. painting
4. initial type testing
5. subcontractor of welding

7. Best practice - from the perspective of NoBo
1. thermal cutting 2. tack welds 3. painting 4. initial type testing 5. subcontractor of welding

8. Best practice - from the perspective of NoBo
Thermal cutting
The capability of thermal cutting processes shall be
periodically checked - EN (EN ISO 9013)
Quality of the cut surfaces
perpendicularity or angularity tolerance (u)
mean height of the profile (Rz5)
Hardness of surfaces (HV 10)

9. Best practice - from the perspective of NoBo
Manufacturer Nyír-Mezőgép Ltd., Hungary Execution class EXC 3 Product steel structure, for buildings Material S355J2 / EN

10. Best practice - from the perspective of NoBo

11. Best practice - from the perspective of NoBo
Questions
Answers
Who has to have these tests executed?
The owner/user of the thermal cutting equipment.
These results will be valid for that particular cutting machine.
What shall happen with a new or another cutting equipment?
Tests must be done for this cutting equipment, too.

12. Best practice - from the perspective of NoBo
Subcontractor Nyír-Dinamika Ltd.
(thermal cutting)
specifications thermal cutting test report
drawings contract (which equipment) plates with certificates cutting list (each project)
systematically super- cut parts
vise the process
Manufacturer Nyír-Mezőgép Ltd.

13. Best practice - from the perspective of NoBo
Example for typical shape from representative thickness
sharp corner, curved arc (EN ) D
D ≥ 200 mm
L ≥ 200 mm

14. Best practice - from the perspective of NoBo
1. thermal cutting 2. tack welds 3. painting 4. initial type testing 5. subcontractor of welding

15. Best practice - from the perspective of NoBo
Tack welds
„The minimum length of the tack shall be the lesser of four times the thickness of the thicker part or 50 mm, unless a shorter length can be demonstrated as satisfactory by test.” – EN , 7.5.7

16. Best practice - from the perspective of NoBo
Manufacturer GeneralNet Corp., Hungary Execution class EXC 2 Product steel structure for mobile telecommunication Material S235JR / EN

17. Best practice - from the perspective of NoBo

18. Best practice - from the perspective of NoBo
Question
Answer
How can be demonstrated the conformity of the 10 mm long tack welds?
With tack weld test.
Visual testing / EN ISO 17637
Macro examination
Penetrant test / EN 571-1 or
Magnetic particle inspection /
EN 17638

19. Best practice - from the perspective of NoBo
Tack weld Fillet weld

20. Best practice - from the perspective of NoBo
Visual test passed Penetrant test passed Macro examination passed Shorter tack weld length can be demonstrated as satisfactory by test.

21. Best practice - from the perspective of NoBo
1. thermal cutting 2. tack welds 3. painting 4. initial type testing 5. subcontractor of welding

22. Best practice - from the perspective of NoBo
Painting
According to EN F6.1, the temperature of the surfaces to be coated should be 3 degrees above the dew point.

23. Best practice - from the perspective of NoBo
Manufacturer Nyír-Dinamika Ltd., Hungary Execution class EXC 1 Product steel structure basis of machines Material S355J2 / EN

24. Best practice - from the perspective of NoBo

25. Best practice - from the perspective of NoBo
Questions
Answers
Which equipments must be used to measure temperature and humidity?
Calibrated thermometers and humidity meters.
Which are the most important data of the painting log?
Date
Air & steel temperature
Air humidity
Dew point
List of products
Name of paint
Thickness of coating
Painter’s name

26. Best practice - from the perspective of NoBo
Subcontractor Nyír-Mezőgép Ltd.
(painting)
contract specifications declaration (painting acc. to workpieces EN Annex F)
systematically super- surface preparation
vise the process painting
Manufacturer Nyír-Dinamika Ltd.

27. Best practice - from the perspective of NoBo
1. thermal cutting 2. tack welds 3. painting 4. initial type testing 5. subcontractor of welding

28. Best practice - from the perspective of NoBo
Initial type testing
„Initial type testing is the complete set of tests or other procedures, determining the performance of samples of products representative of the product type.”
– EN , 6.2.1

29. Best practice - from the perspective of NoBo
Question
Answer
There is no order for any product acc. to EN 1090.
How can a manufacturer prove that they are capable to execute the initial type testing?
The product for initial type testing can be a simple welded structure.
Important!
EXC of this simple structure =
= EXC to be certified

30. Best practice - from the perspective of NoBo
1. thermal cutting 2. tack welds 3. painting 4. initial type testing 5. subcontractor of welding

31. Best practice - from the perspective of NoBo
Question
Answer
The subcontractor has got only EN certificate.
The manufacturer is responsible for the whole product, the subcontractor is responsible for the welding technology.
Is EN enough for manufacturing according to EN ?
This is not enough.
The subcontractor has to be certified acc. to EN by a Notified Body for the suitable execution class.

32. Best practice - from the perspective of NoBo