BS EN 13492:2018 pdf download

BS EN 13492:2018 pdf download.Geosynthetic barriers – Characteristics required for use in the construction of liquid waste disposal sites, transfer stations or secondary containment
1 Scope
This European Standard specifies the characteristics of geosynthetic barriers, including polymeric geosynthetic barriers, clay geosynthetic barriers and bituminous geosynthetic barriers, when used as fluid barriers and separation layer in the construction of liquid waste disposal sites, and in the construction of transfer stations or secondary containment for the storage of liquid waste on a waste disposal site only and the appropriate test methods to determine these characteristics. The intended use of these products is to control the leakage of fluids through the construction. This European Standard is not applicable to geotextiles or geotextile-related products as defined in EN ISO 10318-1. This European Standard provides for the assessment and verification of constancy of performance (AVCP) of the product to this European Standard including factory production control procedures. This European Standard defines characteristics to be considered with regard to the presentation of performance. NOTE Where potable water is or can be in direct contact with the product, other relevant standards, requirements and/or regulations can be considered for the design.
4 Characteristics and corresponding methods of test
4.1 General
The main function of geosynthetic barriers used in the construction of liquid waste disposal sites,transfer stations and secondary containment, is to prevent the movement of fluids through the construction and to prevent the leachate of the stored materials or to prevent the stored materials from escaping into the environment. This includes the use of a geosynthetic barrier as a basal, side or capping liner. Damage during installation has not been addressed in this document.
4.2 Types of applications
4.2.1 General
The main function of geosynthetic barriers used in the construction of liquid waste disposal sites is to prevent or reduce the flow of fluid through the structure.
4.2.2 Application 1:“Base and side barrier”
In this application, the GBR is used as a barrier in the base and/or side. Not all GBR-systems might be applicable for an uncovered design (left side of Figure 1). Figure 1 shows a typical cross-section.
5.2 Type testing
5.2.1 General
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 1].