Naue is such a company, regularly monitored by TÜV Nord, and additionally holds the AK GWS monitoring mark (in accordance with BAM guidelines) and the AK Tunnel mark (inspected by STUVA). Naue's plastic welders are certified to DVS-2212.
Naue is regularly audited by TÜV Nord and is a certified specialist company under § 62 of the AwSV. We hold the monitoring seal of the Groundwater Protection Working Group e.V. (AK GWS) for sealing systems in accordance with BAM guidelines, as well as certification from the Tunnel Sealing Working Group e.V. (AK Tunnel), inspected by STUVA. These certifications confirm the quality of our company and the reliable installation of sealing systems in accordance with the applicable standards.
Our team consists of DVS-2212-certified plastic welding specialists who undergo regular training and inspections. With years of experience and technical expertise, we are among the leading specialists in plastic sealing systems. We have been active in sealing technology since the 1970s and continuously develop our expertise. Regular training sessions and safety briefings keep our employees up to date with current technologies.
| Certification | Scope | Issuing body |
|---|---|---|
| § 62 AwSV (specialist company) | Installation, maintenance and inspection at facilities handling substances hazardous to water | TÜV Nord (regular audits) |
| AK GWS monitoring mark | Geomembrane sealing installations in accordance with BAM guidelines (groundwater protection) | Arbeitskreis Grundwasserschutz e.V. |
| AK tunnel marker | Tunnel sealing installations (DWA, DWA-I, SWA) |
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| Arbeitskreis Tunnelabdichtung e.V. (inspected by STUVA) |
| DVS-2212 | Qualification of plastic welders for thermoplastic geomembranes | DVS – German Welding Society |
| SCC VAZ (SGU) | Occupational safety and health management on construction sites | SCC (regular audit) |
| PQ prequalification | Qualification for public construction tenders (VOB) | Prequalification body (PQ-VOB) |
It is a company inspected and certified by an accredited body (TÜV Nord / Germany) to install, maintain and inspect facilities that handle substances hazardous to water. The certification is mandatory under German water law and is renewed through regular audits.
The AK GWS monitoring mark (Arbeitskreis Grundwasserschutz e.V. / Germany) confirms that the installer meets the technical and organisational requirements for BAM-compliant geomembrane sealing installations in groundwater protection. It is widely accepted by German water authorities.
The AK Tunnel mark (Arbeitskreis Tunnelabdichtung e.V. / Germany) is the sector quality mark for tunnel geomembrane installers. It is inspected by STUVA and is frequently specified by public-sector tunnel clients (road authorities, Deutsche Bahn / Germany).
DVS-2212 is the German Welding Society standard for the qualification of plastic welders. It defines the training, examination and ongoing qualification of welders joining thermoplastic geomembranes. All of Naue's welders hold current DVS-2212 certification.
SCC VAZ (Safety Certificate Contractors / HSE management system) certifies the company’s occupational safety, health and environmental management on construction sites. It is verified by regular audits.
Prequalification (PQ) is a recognised qualification for public construction tenders under the German VOB. It allows the suitability of the company to be verified centrally for public procurement.
Yes. The § 62 AwSV “Fachbetrieb” status and the SCC and other certifications are maintained through regular audits and inspections, and welder qualifications are renewed as required.
The current certificates (TÜV Nord § 62 AwSV, AK GWS, AK Tunnel, SCC VAZ and PQ) are available as PDF downloads in the ‘Certificates and documents for download’ section on this page.