BS EN 13121-3:2008 + Amendment 1:2010 GRP tanks and vessels for use above ground. Design and workmanship
BS EN 13121-3 is a European standard which gives requirements for the design, fabrication, inspection, testing and verification of glass reinforced plastic (GRP) tanks and vessels. It applies to GRP vessel with or without Thermoplastics lining, for storage or processing of fluids, factory made or site built, non pressurised or pressurised up to 10 bar, for use above ground.
BS EN 13121-3 covers vessels and tanks subject to temperatures between – 40 °C and + 120 °C.
BS EN 13121 Part 3 covers those tanks with a working pressure up to 10 bar for above ground use only. The standard was prepared under the European Commission Mandate 83/139/EEC the Pressure Equipment Directive (PED). In Europe this has been in force since May 2002 and all organizations in the European Union are obliged to comply with it.
The design and manufacture of GRP (glass-reinforced plastic) tanks and vessels involve a number of different materials in a lamina design. As a result there are many possible combinations of reinforcement type that will meet the structural requirement for the application of the tank. This allows the designer to select the laminate construction best suited to the available manufacturing facilities and hence be most cost effective
With the publication of BS EN 13121-3, BS 4994:1987 Specification for design and construction of vessels and tanks in reinforced plastics is declared obsolescent, which will still cover those tanks still in service as tanks made from GRP are generally accepted to have a long working life.
Contents of BS EN 13121-3:
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviations
- 5 Information and requirements to be supplied and to be documented
- 6 Material
- 7 Mechanical properties
- 8 Determination of design strain and loadings
- 9 Design
- 10 Design analysis
- 11 Bolted flange connections
- 12 Supports
- 13 Structures and fittings
- 14 Local load analysis
- 15 Quality control
- 16 Site built tanks and vessels
- 17 Marking
- Annex A (informative) Product testing for volume or batch production process
- Annex B (informative) Derivation of laminate properties from lamina properties
- Annex C (normative) Pressure and leak testing
- Annex D (normative) Methods of tests
- Annex E (normative) Approval testing of laminators
- Annex F (normative) Approval testing of welders
- Annex G (informative) Loading from local loads - Methods of calculation
- Annex H (informative) Design method for filament wound laminates
- Annex I (normative) Pre-moulded flanges technical requirements
- Annex J (informative) Shells subjected to wind loading value from metallic codes
- Annex K (informative) Horizontal vessel design
- Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC
- Bibliography
The other parts of this standard are also available:
- BS EN 13121-1:2003 GRP tanks and vessels for use above ground. Raw materials. Specification conditions and acceptance conditions
- BS EN 13121-2:2003 GRP tanks and vessels for use above ground. Composite materials. Chemical resistance
- BS EN 13121-4:2005 GRP tanks and vessels for use above ground. Delivery, installation and maintenance
