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Corrosion protection according to EN 1090:
Categories and appropriate procedures
EN 1090: Conformity, corrosion protection and CE marking for steel & aluminium components
Safe steel and aluminium structures with EN 1090
The European standard EN 1090 ensures the safety and reliability of load-bearing steel and aluminum components. It includes proof of conformity, factory production control, manufacturer certification and CE marking.
Focus on corrosion protection:
A central aspect of EN 1090 is corrosion protection. Depending on the environmental conditions (corrosion protection categories 1 to 3), suitable protective measures such as hot-dip galvanizing, coatings or thermal spraying must be applied.
Manufacturer’s responsibility:
The manufacturer is responsible for the correct implementation of EN 1090. This includes the establishment of a factory production control system, certification by a notified body and the affixing of the CE marking.
Your benefits:
- Safe and durable steel and aluminium structuresProof of conformity with European standardsIncreased trust from building owners and authoritiesLower maintenance and repair costs
With the expertise of mtv messtechnik, you ensure the implementation of EN 1090 in accordance with the standards and thus guarantee the safety and quality of your steel and aluminum structures.
Corrosion protection: An important aspect of EN 1090
The European standard EN 1090 regulates the proof of conformity, factory production control, manufacturer certification and CE marking for load-bearing steel and aluminium components placed on the market as construction products.
An important aspect of EN 1090 is corrosion protection. This must be planned, implemented and documented in accordance with the requirements of the standard.
The standard distinguishes three corrosion protection categories:
- Category 1: Low corrosion risk (e.g. indoor areas with dry atmosphere)Category 2: Moderate corrosion risk (e.g. outdoor areas with temperate climate)Category 3: High corrosion risk (e.g. outdoor areas with aggressive climate)
Depending on the corrosion protection category, appropriate corrosion protection measures must be taken. These may include:
- Hot-dip galvanizing: A widely used process in which the steel surface is coated with a zinc coating.Coatings: Paint systems that are applied to the steel surface.Thermal spraying: Process in which metal powder is sprayed onto the steel surface and then melted.
The choice of corrosion protection system depends on various factors, such as the corrosion protection category, the environmental conditions and the requirements of the client. The manufacturer of load-bearing steel and aluminum components is responsible for ensuring that the corrosion protection measures are carried out in accordance with the requirements of EN 1090. To do this, he must set up and document his own factory production control system. He must also obtain certification from a notified body. The CE marking is a sign that a load-bearing steel and aluminum component meets the requirements of EN 1090.
Corrosion protection according to EN 1090: This applies since July 2014
The new European standard EN 1090 has been mandatory since July 2014 and regulates corrosion protection for steel structures. The biggest change concerns coatings, while there is hardly any need for action in hot-dip galvanizing.
New obligations for manufacturers
Manufacturers of load-bearing steel components such as metalworking shops or steel construction companies must now bring products onto the market with the CE mark. This mark documents compliance with relevant guidelines and technical specifications. In addition, manufacturers must set up their own factory production control (FPC) and prove that they have qualified personnel, documented processes and the necessary technical equipment.
Corrosion protection according to EN 1090-2
EN 1090-2 "Part 2: Technical rules for the execution of steel structures" regulates corrosion protection. Manufacturers who label products with the CE mark are also responsible for proper corrosion protection. They must ensure that the work complies with the technical rules. This can be done through their own measures or through evidence from subcontractors such as hot-dip galvanizing or coating companies.
Challenges and outsourcing
In the future, many metal and steel construction companies will not be able to carry out corrosion protection work internally in accordance with EN 1090. This often requires high investments in plant technology and the qualification of employees. It therefore makes sense to outsource this work to qualified and certified specialist companies.
Corrosion protection processes
Hot-dip galvanizing, thermal spraying and coatings are possible for corrosion protection of steel structures. The requirements are specified in Annex F of EN 1090-2. Manufacturers must determine the duration of protection and corrosivity category and, if necessary, specify a preferred method such as hot-dip galvanizing.
Coatings according to EN 1090
Coating work may only be carried out by qualified companies. Proof of qualification can be provided by external monitoring or European-recognized quality seals. These simplify the proof through regular production controls and independent inspections.
Surface preparation and layer thickness measurement
Steel structures that are to be protected by organic coating systems require professional surface preparation in accordance with EN ISO 12944-4 and EN ISO 8501. This can be done by blasting; manual derusting and manual machine derusting are not suitable. Before coating, the surface condition must be checked to ensure that it complies with the standards. The coating itself is carried out in accordance with EN ISO 12944-7.
For a protection period of more than five years with a corrosivity category of C3 or higher, edges must be rounded or chamfered in accordance with EN 12944-3 and protected with a strip-shaped coating. Coated components may only be packaged after the curing time has elapsed.
Routine checks
Proper execution includes routine checks of surface cleanliness and surface roughness before coating, measurement of the layer thickness of each layer and visual inspection in accordance with EN ISO 12944-7. Companies must set up their own factory production control, which is certified by a recognized body. Some quality associations offer certificates that confirm the professional execution of coating work in accordance with EN 1090.
Hot-dip galvanizing according to EN 1090
For hot-dip galvanizing, EN 1090 only leads to minimal changes in Germany, as the DASt guideline 022 has been binding since 2009. This guideline prescribes in-house production control and external monitoring. Hot-dip galvanizing plants that are certified according to this guideline can demonstrate compliance with the technical rules of EN 1090 and thus meet the requirements for corrosion protection.
Conclusion
EN 1090 regulates corrosion protection for steel structures in detail and creates new challenges for steel and metal workers, who are often no longer able to carry out this work themselves. External specialist companies and quality associations for coatings are becoming increasingly established. The requirements for hot-dip galvanizing remain largely unchanged, as the DASt guideline 022, which has been in force since 2009, already meets the EN 1090 requirements.
- Coating thickness gauges: These devices measure the thickness of coatings and ensure that the coatings meet specifications. High-quality testing devices of this type are the DeFelsko PosiTector 6000 coating thickness gauge for metal substrates according to ISO 2178 / 2360 / 2808. PosiTector 200 non-metal substrates, as well as the PosiTest PC Powder Checker coating thickness, which can measure powder coatings before the baking process.
- Pore Testers: Equipment such as the DeFelsko PosiTest LPD Low Voltage and PosiTest HHD High Voltage DC Pore Tester detect and locate pores and other defects in the coating that can lead to premature failure.
- Roughness testers: Devices such as the DeFelsko PosiTector RTR and -SPG are roughness and surface profile testers according to ASTM D 4417-B, US NAVY NSI 009-32, ISO 8503-5. They measure the roughness of the surface before coating to ensure that it meets the necessary standards.
- Contact us today for further information and individual advice!
- mtv messtechnik offers the complete range of necessary measuring instruments. The most important other devices include:
- Moisture meters: Meters such as the DeFelsko PosiTector DPM dew point meter according to ISO 8502-4 and the PosiTector DPM-L dew point data logger measure the dew point and moisture content of substrates to prevent coating defects due to inadequate surface preparation.
- Visual inspection instruments: These include inspection mirrors, microscopes or endoscopes for a detailed visual inspection of the surface condition.
- Corrosion testing equipment: Corrosion measuring instruments to assess the degree of corrosion resistance of coatings and substrates.
Self-testing according to DIN EN 1090: Requirements and usefulness
Self-testing according to DIN EN 1090 is permitted under certain conditions and can be useful to ensure that the requirements of the standard are met. Here are the most important points to consider:
Requirements for self-examination
1. Competence and qualification:
- The person carrying out the self-assessment must have sufficient specialist knowledge and qualifications in the field of welding technology and materials testing. This can be demonstrated through appropriate training and further education as well as practical experience.
2. Quality assurance system:
- Your company must be able to demonstrate a documented and certified quality assurance system in accordance with DIN EN 1090. This includes, among other things, a factory production control system (FPC), which is regularly audited.
3. Equipment and procedures:
- Suitable test equipment and procedures must be available to carry out the necessary tests. These include, for example, non-destructive testing (NDT) equipment and measuring tools.
Meaningfulness of self-examination
Self-assessment can be useful in the following cases and offers these advantages:
1. Cost savings:
- Self-audits can save costs for external inspectors, especially for regular or extensive audits.
2. Flexibility and efficiency:
- Self-audits enable the necessary controls to be carried out flexibly and promptly, which can increase the efficiency of production processes.
3. Internal quality control:
- Self-audits increase awareness of quality within the company and promote continuous improvement of production processes.
Need for a FROSIO inspector
A FROSIO inspector (International Committee for Training and Certification of Inspection Personnel) specializes in coatings and corrosion protection and is not mandatory under DIN EN 1090. However, the involvement of a FROSIO inspector may be useful or necessary in the following cases:
Specific requirements for corrosion protection:
- If the construction has special requirements for corrosion protection that require professional coating and inspection, a FROSIO inspector is advisable.
External certifications:
- For projects that require external certification of corrosion protection, a FROSIO inspector may be necessary to provide the relevant evidence.
Conclusion
Self-testing in accordance with DIN EN 1090 is permitted and makes sense if the necessary requirements are met, in particular the qualification of the inspector and the existence of a certified quality assurance system. A FROSIO inspector does not necessarily have to be commissioned unless specific requirements for corrosion protection or external certifications make this necessary.
For detailed requirements and specific project conditions, please consult DIN EN 1090 and the relevant regulations and guidelines.
Details on surface testing equipment for FROSIO inspectors can be found here
Sources:
- DIN EN 1090 Standard textFROSIOGerman Institute for Standardization (DIN)
Instructions for self-testing according to DIN EN 1090
DIN EN 1090 is a European standard that defines requirements for the construction of steel and aluminum structures. Self-testing according to this standard requires specific steps to ensure the quality and safety of the structures. Here is a brief guide to self-testing:
1. Planning and documentation
Planning:
- Identify the specific requirements and scope of testing according to DIN EN 1090. Create a test plan that documents all necessary steps and test procedures.
Documentation:
- Maintain a test log to document all tests performed and results.Keep all relevant documents such as drawings, calculations and certificates.
2. Material testing
Material certificates:
- Make sure that all materials used comply with the specifications of DIN EN 1090. Check the material certificates for compliance with the requirements.
Visual inspection:
- Perform a visual inspection of the materials to detect defects such as cracks, corrosion or damage.
3. Weld inspection
Non-destructive testing (NDT):
- Use techniques such as ultrasonic testing, magnetic particle testing or X-ray testing to check the quality of welds. Document the results of each test.
Visual weld inspection:
- Check welds for surface defects such as pores, undercuts or slag. Use a weld gauge to measure weld geometries.
4. Dimension control
Dimensions and tolerances:
- Check the dimensions and tolerances of the components based on the technical drawings and specifications. Use measuring tools such as calipers, protractors and laser measuring systems.
5. Assembly test
Assembly quality:
- Check that all components are correctly assembled according to the assembly instructions. Make sure that all fasteners are properly tightened and that the required torques have been observed.
Functional test:
- Perform a functional test to ensure that the design works as intended. Check moving parts for smooth movement and correct function.
6. Final documentation
Report:
- Prepare a final audit report that summarizes all audits performed and their results. The report should also include recommendations for any improvements or additional audits.
Archiving:
- Securely archive all documents and reports for future inspections and evidence.
conclusion
Self-testing according to DIN EN 1090 requires careful planning, comprehensive material and weld seam testing, as well as precise dimensional control and assembly testing. By following these steps, you can ensure that your designs meet the standard requirements and guarantee high quality and safety.
For complete and detailed instructions and specific requirements of DIN EN 1090, consult the official standard and seek professional advice if necessary.
DIN EN 1090, what is behind it? A short summary
- DIN EN 1090 is used in metal construction. What exactly does the DIN EN 1090 standard contain?
- What is DIN EN 1090? DIN EN 1090 is a European standard system that regulates the quality assurance and certification of steel and aluminum structures.
- Requirements for manufacturing companies according to DIN EN 1090Uniform requirements for the design, manufacture and testing of load-bearing components in the EU.
- Compliance with DIN EN 1090 requirementsSpecific requirements for material quality, processing and documentation.
- Obtaining a DIN EN 1090 declaration of conformityNecessary steps for companies to obtain the declaration of conformity.
- Benefits of complying with DIN EN 1090 for companiesImproved products, strengthened reputation and cost savings through conformity.
- ConclusionCompliance with DIN EN 1090 is crucial for the competitiveness and market acceptance of steel and aluminum construction products.
Justus-von-Liebig-Strasse 17a
50374 Erftstadt (Gymnich)
49 2235 987170 info@mtv-messtechnik.de
Justus-von-Liebig-Strasse 17a
50374 Erftstadt (Gymnich), Germany
+49 2235 987170
info@mtv-messtechnik.de