BS EN 13121-2:2003 GRP tanks and vessels for use above ground. Composite materials. Chemical resistance
BS EN 13121-2 is the 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 gives the requirements necessary to establish that the GRP material and any thermoplastic lining willl have sufficient chemical and thermal resistance to service conditions. Part 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 prEN 13121-3. Five methods are described — use of Media Lists, use of resin manufacturers data, use of thermoplastics manufacturers data, service experience and sample testing. The manufacturer of the tank or vessel may choose any one of these methods subject to here being sufficient data available in that method for the particular application.
Together with the requirements and acceptance conditions for the raw materials determined in EN 13121-1, the design and workmanship requirements as determined in prEN 13121-3 and the delivery, handling, installation and maintenance recommendations given in EN 13121-4, EN 13121-2 completes the total standard's requirements.
Contents of BS EN 13121-2 include:
- Foreword
- Introduction
- Scope
- Normative references
- Definitions
- Protective layers
- Determination of partial design factor, A2
- Determination of partial design factor, A2, in accordance with media lists
- Determination of partial design factor, A2, by service experience
- Evaluation of partial design factor, A2, by testing in situ or by laboratory testing
- Relationship between this European Standard
- The Essential requirements of EU Directive 97/23/EC (PED)