BS/EN 16993-2018 pdf download.Geosynthetic barriers – Characteristics required for use in the construction of storage lagoons, secondary containment (above and below ground) and other containment applications for chemicals, polluted water and produced liquids.
All performances related to characteristics included in this standard shall be determined when the manufacturer intends to declare the respective performances unless the standard gives provisions for declaring them without performing tests. (e.g. use of previously existing data, CWFT (classification without further testing) and conventionally accepted performance).
Assessment previously performed in accordance with the provisions of this standard, may be taken into account provided that they were made to the same or a more rigorous test method, under the same AVCP system on the same product or products of similar design, construction and functionality, such that the results are applicable to the product in question.
NOTE Same AVCP system means testing by an independent third party [only for products covered by system 1+, 1 and 3], under the responsibility of a notified product certification body [only for products covered by system 1+ and 1j.
For the purposes of assessment, the manufacturer’s products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the product family are representative for that same characteristics for all products within that same family.
Products may be grouped in different families for different characteristics.
Reference to the assessment method standards should be made to allow the selection of a suitable representative sample.
In addition, the determination of the product type shall be performed for all characteristics included in the standard for which the manufacturer declares the performance:
— at the beginning of the production of a new or modified geosynthetic barrier for use in the construction of storage lagoons, secondary containment (above and below ground) and other containment applications for chemicals, polluted water and produced liquids (unless a member of the same product family); or
— at the beginning of a new or modified method of production (where this may affect the declared properties);
— or they shall be repeated for the appropriate characteristic(s), whenever a change occurs in geosynthetic barriers for use in the construction of storage lagoons, secondary containment (above and below ground) and other containment applications for chemicals, polluted water and produced liquids design, in the raw material or in the supplier of the components, or in the method of production (subject to the definition of a product family), which would affect significantly one or more of the characteristics.
Where components are used whose characteristics have already been determined, by the component manufacturer, on the basis of assessment methods of other product standards, these characteristics need not be re-assessed. The specifications of these components shall be documented.
c) the manufacturer using other party results accepts to remain responsible for the product having the declared performances and he also:
1) ensures that the product has the same characteristics relevant for performance as the one that has been subjected to the determination of the product type, and that there are no significant differences with regard to production facilities and the production control process compared to that used for the product that was subjected to the determination of the product type; and
2) keeps available a copy of the determination of the product type report that also contains the information needed for verifying that the product is manufactured according to the same design and with raw materials, constituents and manufacturing methods of the same kind.
5.2.5 Cascading determination of the product type results
For some construction products, there are companies (often called “system houses”) which supply or ensure the supply of, on the basis of an agreement 2)) some or all of the components to an assembler who then manufactures the finished product (referred to below as the “assembler”) in his factory.
Provided that the activities for which such a system house is legally established include manufacturing/assembling of products as the assembled one, the system house may take the responsibility for the determination of the product type regarding one or several essential characteristics of an end product which is subsequently manufactured and/or assembled by other firms in their own factory.
When doing so, the system house shall submit an “assembled product” using components manufactured by it or by others, to the determination of the product type and then make the determination of the product type report available to the assemblers, i.e. the actual manufacturer of the product placed on the market.
To take into account such a situation, the concept of cascading determination of the product type might be taken into consideration in the technical specification, provided that this concerns characteristics for which either a notified product certification body or a notified test laboratory intervene, as presented below.
The determination of the product type report that the system house has obtained with regard to tests carried out by a notified body, and which is supplied to the assemblers, may be used for the regulatory marking purposes without the assembler having to involve again a notified body to undertake the determination of the product type of the essential characteristic(s) that were already tested, provided that:
— theassemblermanufacturesaproductwhichusesthesamecombinationofcomponents(components with the same characteristics), and in the same way, as that for which the system house has obtained the determination of the product type report.BS/EN 16993-2018 pdf download.
BS/EN 16993-2018 pdf download
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