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About This Item
Full Description
This CP gives a description of the procedures and requirements related to documentation, design and type testing applicable for TA of thermoplastic piping systems.
This CP does not set the design requirements for the thermoplastic piping systems. TA is based on compliance with design requirements given in the Society's rules and/or other regulations and standards. The CP describes the applicable requirements how to document compliance with the requirements in order to obtain a TA certificate for the equipment. This includes, where relevant, technical requirements for how the type tests shall be performed.
The Society's type approval certificate will cover one grade of the actual product with the possibility to include variants.
Thermoplastic piping systems with different materials are considered as different grades, and different:.
— nominal pressures (both internal and external)
— joining methods
— diameters
— fire endurance level
— flame spread performance
— smoke generation and toxicity performance
— conductive or non-conductive, as well as a
— defined range of fittings (including flanges)
are considered variants of the same grade.
The Society's type approval certificate is normally limited to one manufacturer at one production site, however, other arrangements may be agreed upon with the Society.
Type tests as specified in Sec.2 [3], shall be carried out and verified in one of the following ways:
— at a DNV laboratory
— at an accredited and recognized testing laboratory or a laboratory accepted by the Society
— at the manufacturer’s premises in the presence of a surveyor.
The type test results shall be submitted to the Society in form of a test report according to ISO 17025 and the additional requirements for the relevant test standard for evaluation.
Application
DNV rules DNV-RU-SHIP Pt.4 Ch.6 require that thermoplastic piping systems are type approved in accordance with this CP for equipment to be installed on vessels classed with the Society.
A TA certificate in accordance with this CP will confirm compliance with the requirements given in the Society's rules as specified in [1.1]. The TA certificate will not confirm compliance with requirements given in other parts of the rules. In case additional requirements given in other parts of the rules shall be covered by the TA certificate, this shall be specified in the application for TA and will be stated in the TA certificate.