BS EN 13121-2 is a European standard that gives requirements for chemical resistance of composite materials used for GRP tanks and vessels for storage or processing of fluids, for use above ground. The tanks or vessels may be factory-made or site built, with or without lining. BS EN 13121-2 as a part of the BS EN 13121 series together define the responsibilities of the tank or vessel manufacturer, the materials manufacturers or suppliers, and the purchaser.
The design and manufacture of GRP tanks and vessels involve a number of different materials such as resins, thermoplastics, reinforcing fibres, and a number of different manufacturing methods. It is implicit that tanks and vessels conforming to BS EN 13121-2 should be made only by manufacturers who are competent and suitably equipped to fulfil all requirements, using materials manufactured by competent and experienced material manufacturers.
BS EN 13121-2 on chemical resistance in composite materials is useful for:
Composites-based products are resistant to harsh chemical and temperature environments for a long time. For outdoor exposure, chemical handling applications, and other harsh conditions, composites are frequently used. Composites do not corrode or rust. BS EN 13121-2 gives the requirements necessary to establish that the GRP material and any thermoplastic lining will have sufficient chemical and thermal resistance to service conditions.
BS EN 13121-2 defines the requirements for the protective layer and the structural laminate as well as defining methods for proof of suitability to meet the chemical/thermal effects caused by the fluids and of determination of the partial design factor, A2, as required for design in accordance with EN 13121-3. BS EN 13121-2 provides its users with an overall understanding of the design, handling, evaluation, and maintenance of the equipment for a wider global reach. Using BS EN 13121-2 guidelines ensures durability, design flexibility, corrosion resistance and low maintenance.
EN 13121-2:2003