In crane manufacturing, everything revolves around safety, reliability, and precision. NEN standards form the technical backbone of this industry: they define how crane systems must be designed, built, inspected, and maintained. For industrial companies purchasing or commissioning a crane system, familiarity with these standards is essential. Below, we answer the most frequently asked questions about NEN standards and what they mean in practice for crane manufacturing.
What is a standardized working method according to NEN standards?
A standardized working method according to NEN standards is a structured way of working that meets the technical requirements and safety criteria established by the Dutch Standardization Institute (NEN). These standards define exactly what requirements a product, process, or system must meet in order to function safely and reliably.
In practice, this means that every step in the design and construction process of a crane system is carried out on the basis of documented procedures, calculations, and quality controls that align with the applicable standards. A standardized working method is therefore not a voluntary guideline, but a binding framework that guarantees the quality and safety of the end product. For crane manufacturers, this means working with certified personnel, using approved materials, and documenting all process steps in technical records.
Which NEN standards apply to crane systems?
Several NEN standards apply to crane systems, depending on the type of crane and its application. The most relevant standards fall under the NEN-EN 13001 series (general design requirements for lifting cranes), NEN-EN 15011 (overhead cranes and gantry cranes), and NEN-EN 13852 for specific applications.
In addition to these product standards, standards relating to electrical installations, welded joints, and steel structures also play a role. These include:
- NEN-EN 13001 for the general structural safety of lifting cranes
- NEN-EN 15011 specifically for overhead cranes and gantry cranes
- NEN-EN 13852 for offshore and special applications
- NEN-EN 60204 for the electrical equipment of machinery
- NEN-EN ISO 3834 for quality requirements in the welding of metals
Which standards apply in any given case depends on the type of crane system, its lifting capacity, and the working environment. For complex, non-standard crane systems, it is therefore advisable to work with a crane manufacturer that has in-depth knowledge of the full suite of applicable standards.
Why are crane manufacturers required to work in accordance with NEN standards?
Crane manufacturers are required to work in accordance with NEN standards because crane systems fall under the European Machinery Directive and the Working Conditions Act. This legislation requires manufacturers and users to demonstrably comply with the applicable safety and quality requirements, with NEN standards providing the technical substance of those legal obligations.
A crane system that does not comply with the applicable standards may not legally be put into service. Furthermore, the client, as employer, bears independent responsibility for the safety of employees who work with or beneath a crane. In the event of an incident, failure to comply with the standards can result in liability, substantial fines, or even criminal prosecution. Working in accordance with the standards is therefore not only a quality choice, but a legal obligation.
What is the difference between a NEN standard and a NEN-EN standard?
The difference between a NEN standard and a NEN-EN standard lies in their origin and geographical scope. A NEN standard is a national Dutch standard, drawn up by the Dutch Standardization Institute. A NEN-EN standard is a European standard (EN) that has been adopted by the Netherlands and published as a national standard, with the prefix NEN indicating that it applies in the Netherlands.
In practice, most standards applicable to crane systems are NEN-EN standards. This means that the same technical requirements apply in all European countries that have adopted the standard. For crane manufacturers active in both the Netherlands and Belgium — such as ourselves — this offers a significant advantage: the technical basis is the same in both countries, which considerably simplifies cross-border projects.
There is also the NEN-EN-ISO standard, where the standard has been established by both the European and the international standardization body (ISO). These standards enjoy the broadest international recognition.
How is a standardized working method applied in crane manufacturing?
In crane manufacturing, a standardized working method is applied by ensuring that every part of the construction process meets the requirements of the relevant NEN standards, from the initial design calculation to the final inspection. This includes the use of certified materials, documented welding processes, electrical installations that comply with the applicable standards, and a final test prior to commissioning.
In concrete terms, the process looks as follows:
- Design phase: Structural calculations are performed in accordance with NEN-EN 13001, with loads, fatigue, and safety margins fully documented.
- Work preparation: Material specifications, welding procedures, and dimensional tolerances are recorded in work instructions that align with the standard requirements.
- Construction: Certified welders carry out the work in accordance with approved welding procedures (compliant with NEN-EN ISO 3834).
- Electrical installation: The electrical equipment is installed and documented in accordance with NEN-EN 60204.
- Testing and inspection: Prior to commissioning, the crane system undergoes a load test and is inspected by an accredited inspection body.
We carry out this entire process in-house, from the drawing office and work preparation through to construction, installation, and final inspection. This ensures that every crane system demonstrably complies with all applicable NEN standards.
How often must crane systems be inspected in accordance with NEN standards?
Crane systems must be inspected at least once a year in accordance with the applicable NEN standards and the Working Conditions Act. This annual inspection includes a visual examination, a functional test, and an assessment of the safety provisions. Depending on the intensity of use and the type of crane, additional interim inspections may be required.
The frequency of inspection also depends on the risk classification of the crane system and the conditions under which it is used. A crane that lifts heavy loads daily in a demanding industrial environment requires more intensive monitoring than one that is used only occasionally. In addition to the legally required annual inspection, it is advisable to schedule regular maintenance in order to detect wear at an early stage and prevent downtime.
As an accredited inspection company, we carry out annual inspections, interim inspections, and the associated maintenance. This gives you as a client the assurance that your crane system always complies with the current NEN standards and that your employees can work safely.
How BKRS helps with NEN standards in crane manufacturing
BKRS is your specialist partner for crane systems that fully comply with the applicable NEN standards. From design and construction to inspection and maintenance: we guide you through the entire process and ensure that your installation is demonstrably safe and standards-compliant. Specifically, we offer:
- Design and calculations in accordance with NEN-EN 13001 and NEN-EN 15011
- Construction by certified welders in accordance with NEN-EN ISO 3834
- Electrical installations in accordance with NEN-EN 60204
- Final inspections and load tests by accredited inspection bodies
- Annual inspections, interim inspections, and preventive maintenance
- Complete technical documentation as proof of standards compliance
Want to be certain that your crane system complies with all applicable NEN standards? Contact BKRS and receive no-obligation advice from our specialists.
Frequently Asked Questions
What happens if my crane system does not comply with NEN standards?
If a crane system does not comply with the applicable NEN standards, it may not legally be put into service. In the event of an incident, this can result in liability, substantial fines, or criminal prosecution of the employer. If in doubt, it is therefore advisable to engage a certified crane manufacturer or inspection body without delay.
How do I choose a crane manufacturer that demonstrably works in accordance with NEN standards?
When selecting a crane manufacturer, look for certifications such as ISO 3834 for welding quality, and ask for demonstrable experience with the relevant NEN-EN standards for your type of crane. A reliable crane manufacturer will be able to provide technical documentation, welding procedures, and inspection reports as proof of standards compliance.
Does a NEN-certified crane system also apply in Belgium or other European countries?
Yes, because most crane standards are NEN-EN standards — European standards that apply in all member states — a crane system that meets Dutch standard requirements can in principle also be used in Belgium and other European countries. This makes cross-border projects considerably easier.
What are the consequences of skipping an annual inspection?
Skipping a mandatory annual inspection is a violation of the Working Conditions Act and can result in fines from the Dutch Labour Authority. In addition, insurance coverage will in many cases lapse in the event of an incident if it can be demonstrated that the inspection obligation was not met.
Related Articles
- What is the maximum lifting capacity of mobile gantry cranes?
- What are the advantages of mobile portal cranes compared to fixed cranes?
- What should you ask a gantry crane manufacturer?
- How do you modify an existing process to comply with NEN standards?
- What is the difference between NEN standards and occupational health and safety legislation?