This European Standard gives requirements for the design, fabrication, inspection, testing and verification of
GRP tanks and vessels 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.
The terms vessels and tanks as used in this European Standard include branches up to the point of
connection to pipe work or other equipment by bolting and supports, brackets or other attachments bonded
directly to the shell. In addition to the definitive requirements, this European Standard also requires the items
in Clause 5 to be fully documented.
This European Standard covers vessels and tanks subject to temperatures between – 40 °C and + 120 °C.
NOTE It is possible that future advances in resin technology would allow tanks and vessels to be considered for
operating temperatures above + 120 °C. Should such a situation arise and a manufacturer wishes to take advantage of
such developments, then all other requirements of the standard shall be maintained and such tanks and vessels shall only
be designed in accordance with the advanced design method given in 7.8.3.
Excluded from this European Standard are:
tanks and vessels for the transport of fluids;
underground storage tanks;
spherical vessels;
vessels and tanks of irregular shape;
tanks and vessels with double containment;
tanks and vessels which are subject to the risk of explosion, or failure of which may cause an emission of
radioactivity;
specification for fibre reinforced cisterns of one piece and sectional construction for the storage, above
ground, of cold water (see EN 13280:2001).
EN 13121-3:2008 Referenced Document
EN 13121-1:2003 GRP tanks and vessels for use above ground - Part 1: Raw materials; Specification conditions and acceptance conditions
EN 13121-2:2003 GRP tanks and vessels for use above ground - Part 2: Composite materials; Chemical resistance*， 2024-04-19 Update
EN 13121-4:2005 GRP tanks and vessels for use above ground - Part 4: Delivery, installation and maintenance
EN 13923 Filament-wound FRP pressure vessels - Materials, design, manufacturing and testing*， 2024-04-19 Update
EN 1993-1-1 Eurocode 3 - Design of steel structures - Part 1-1: General rules and rules for buildings*， 2022-11-09 Update
EN 1993-1-2 Eurocode 3 - Design of steel structures - Part 1-2: Structural fire design*， 2024-03-20 Update
EN 1993-1-3 Eurocode 3 - Design of steel structures - Part 1-3: Cold-formed members and sheeting*， 2024-03-27 Update
EN 59 Glass reinforced plastics - Determination of indentation hardness by means of a Barcol hardness tester*， 2016-02-01 Update
EN ISO 1172 Textile-glass-reinforced plastics - Prepregs, moulding compounds and laminates - Determination of the textile-glass and mineral-filler content using calcination methods (ISO 1172:2023)*， 2023-09-06 Update
EN ISO 14125:1998 Fibre-reinforced plastic composites - Determination of flexural properties (ISO 14125:1998)
EN ISO 2592 Petroleum and related products - Determination of flash and fire points - Cleveland open cup method*， 2017-09-01 Update
EN ISO 291 Plastics - Standard atmospheres for conditioning and testing (ISO 291:2008)
EN ISO 3915 Plastics - Measurement of resistivity of conductive plastics (ISO 3915:2022)*， 2022-03-02 Update
EN ISO 527-4 Plastics - Determination of tensile properties - Part 4: Test conditions for isotropic and orthotropic fibre-reinforced plastic composites (ISO 527-4:2023)*， 2023-04-12 Update
EN ISO 527-5 Plastics - Determination of tensile properties - Part 5: Test conditions for unidirectional fibre-reinforced plastic composites (ISO 527-5:2021)*， 2021-12-08 Update
EN ISO 75-2 Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite*， 2013-04-01 Update
EN ISO 7500-1 Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system
EN ISO 899-1 Plastics - Determination of creep behaviour - Part 1: Tensile creep*， 2017-11-01 Update
EN ISO 899-2 Plastics - Determination of creep behaviour - Part 2: Flexural creep by three-point loading - Amendment 1 (ISO 899-2:2003/Amd 1:2015)*， 2015-03-01 Update
EN ISO 9513 Metallic materials - Calibration of extensometer systems used in uniaxial testing - Technical Corrigendum 1 (ISO 9513:2012/Cor 1:2013)*， 2013-05-01 Update
EN 13121-3:2008 history
2016EN 13121-3:2016 GRP tanks and vessels for use above ground - Part 3: Design and workmanship
2008EN 13121-3:2008 GRP tanks and vessels for use above ground - Part 3: Design and workmanship Incorporates Amendment A1: 2010