DNV certification


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DNV certification for use in “essential systems” in shipbuilding

aquatherm products may now be used in shipbuilding in systems which are essential for the operation and safety of the ship. This is certified by the international classification society DNV with the issue of type examination certificate TAK00001WZ.

The DNV certification was preceded by a 15-month process which included three audits and six virtual meetings. In addition, numerous internal and external tests were carried out. For example, burst pressure tests on various assemblies in dimensions 250 mm and 450 mm, buckling pressure tests for the calculated determination of the buckling pressure on all dimensions, as well as flame spread tests according to ASTM D635. In all these tests the aquatherm products successfully fulfilled the requirements.

The current certificate is an extension of our certification in shipbuilding for aquatherm blue pipe MF RP. Up until now, aquatherm blue pipe and aquatherm green pipe were only approved for “none essential systems”, such as hot and cold water distribution. They have now been added, to a limited extent, to the so-called “essential systems” on board a ship, such as main and secondary lines for bilge water and supply lines for sprinkler systems. This considerably expands the areas of application in shipbuilding.

In this context, it should be noted that there are restrictions with regards to the permissible installation locations, as thermoplastic pipe systems do not fulfil the fire resistance requirements according to IMO classes L3, L2 and L1. For further details, please refer to the following tables. The areas marked with “0” indicate the certified installation locations of the aquatherm products.

DNV also certifies the external pressure resistance of our pipes in shipbuilding. Based on a test report of a materials research and application technology institute (IMA Materialforschung und Anwendungstechnik GmbH Dresden), aquatherm blue pipe SDR 11 MF RP can be loaded with an external pressure of up to 7.2 bar.

The certification includes dimensions up to 450 mm. For further information please contact our representative for maritime applications, Matthias Konze, at +49 2722 950 295 or matthias.konze@aquatherm.de. The certificate is available upon request.

Application / Limitation of aquatherm PP-R piping systems


Contact: aquatherm GmbH | Biggen 5 | 57439 Attendorn | Germany | Tel: +49 2722 950 0 | info@aquatherm.de

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