Ensuring Quality and Reliability in Rolling Stock


Appono is an independent consultancy agency for rolling stock and heavy equipment.
Inspection / Maintenance

Perform technical inspections and record results in a structured, traceable way.

Reporting

Generate clear, detailed reports with a robust tracking and documentation system.

Project Management

Transform inspection and reporting data into insights and manage projects data-driven.

Administration

Maintain control over all quality and project documentation, access, and approvals.

About Appono

Appono is an independent consultancy agency specialising in quality management, auditing, and technical advisory services for the rolling-stock and heavy-equipment industries. Our integrated approach guarantees the highest level of quality and consistency for every project. Each member of our team has a proven track record in quality management within complex production and maintenance environments. Appono combines its own expertise with a trusted network of partner consultancy agencies to provide flexible, scalable support tailored to each client’s needs.

Trusted by Leading Industry Partners

Appono works with major rolling-stock manufacturers and operators including Siemens, Alstom, Bombardier, CAF, NS (Nederlandse Spoorwegen) and NMBS/SNCB (Belgian Railways).


Our consultants understand the processes, challenges, and quality standards that define this demanding industry—from design and production through to maintenance and lifecycle support.

Providing stability and quality for your rolling stock and heavy equipment

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Our Integrated Consultancy Program

Built around four integrated modules that optimise quality performance, reliability, and project outcomes.

Inspection

Perform technical inspections and record results in a structured, traceable way.

Reporting

Generate clear, detailed reports with a robust tracking and documentation system.

Project management

Transform inspection and reporting data into insights and manage projects data-driven.

Administration

Maintain control over all quality and project documentation, access, and approvals.

Our Approach

For every assignment, Appono assembles the most suitable team of experts. Depending on your needs, this can range from a single specialist to a complete multidisciplinary team, working closely with your organisation and partner agencies. We believe in a pragmatic, data-driven approach—combining technical depth, quality expertise, and real-world experience to deliver measurable results.
Common Questions

Frequently Ask Questions.

What services does Appono provide?

Appono offers consultancy services across the entire lifecycle of rolling stock and heavy equipment from design and procurement to maintenance and operational optimization. We support our clients with technical expertise, project management, asset strategy, and independent assessments.

Our expertise spans the railway and heavy equipment sectors. We partner with manufacturers, operators, and maintainers, including leading names such as Siemens, Alstom, Bombardier, NS, and NMBS. Whether it’s passenger trains, locomotives, trams, or industrial machinery, we bring deep technical insight and hands-on experience.

We combine technical depth with practical field experience. Our consultants have backgrounds in engineering, operations, and maintenance, allowing us to provide actionable solutions rather than theoretical advice. We also pride ourselves on our independence ensuring that our recommendations always serve our clients’ best interests.

At what stage of a project can Appono get involved?

Appono can support your organization at any phase from the concept and tender stage to commissioning, service introduction, and through-life asset management. We tailor our involvement to meet specific client needs, whether for short-term technical support or long-term strategic partnership.

Yes. Appono has experience in projects across Europe and beyond. Our consultants are accustomed to working in multilingual and cross-border environments, ensuring effective collaboration with international teams and suppliers.

You can reach out to us via our contact page or email to discuss your project or challenge. We typically start with an exploratory conversation to understand your goals and identify how Appono can provide the most value. From there, we develop a clear proposal aligned with your requirements.

Robert Soet

About the Founder

Appono was founded by Robert Soet, a senior auditor and quality manager with decades of experience in the rolling-stock and heavy-equipment industries. His leadership ensures that every Appono engagement is guided by precision, integrity, and excellence.
Get in touch

Contact Appono for quality and reliability in rolling stock.

Please feel free to contact us.
Office

Ceintuurbaan 59, 1271 BG Huizen, The Netherlands

Email

info@appono.nl

Let's Talk

Phone : +31 653 855 111


Send us a message