This document specifies the product characteristics and test/assessment methods for workshop
fabricated cylindrical, horizontal steel tanks, single (type S) and double skin (type D) intended to be
used for the underground storage of water polluting liquids (both flammable and non-flammable),
specifically used for storage and/or supply of fuel for building heating/cooling systems, and of hot or
cold water not intended for human consumption at normal ambient temperature conditions (−20 °C to
+50 °C) within the following limits:
— from 800 mm up to 3000 mm nominal diameter and;
— up to a maximum overall length of 6 times the nominal diameter;
— for liquids with a maximum density of up to 1,1 kg/l and;
— with an operating pressure (Po) of maximum 50 kPa (0,5 bar(g)) and minimum – 5 kPa (–50
mbar(g)) and;
— for double skin tanks with a vacuum leak detection system where the kinematic viscosity does not
exceed 5 × 10−3 m2/s.
Two tank types are distinguished:
— Type S: Single skin;
— Type D: Double skin.
Tanks designed to this document allow for an earth cover of up to 1,5 m. If there are imposed traffic
loads or a greater earth cover, calculation will occur.
This document is not applicable to tanks installed in industrial processes or in petrol stations, nor to
loads and special measures necessary in areas subject to risk of earthquakes and/or to flooding.

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This document specifies the product characteristics and test methods for workshop fabricated cylindrical,
horizontal steel tanks, single (type S) and double skin (type D) intended to be used for the underground
storage of water polluting liquids (both flammable and non-flammable) and installed in industrial processes
or in petrol stations at normal ambient temperature conditions (−20 °C to +50 °C) within the following
limits:
— from 800 mm up to 3 000 mm nominal diameter and;
— up to a maximum overall length of 6 times the nominal diameter;
— with an operating pressure (Po) of maximum 50 kPa (0,5 bar(g)) and minimum – 5 kPa (–50 mbar(g))
and;
— for double skin tanks with a vacuum leak detection system where the kinematic viscosity does not
exceed 5 × 10−3 m2/s.
Tanks designed to this standard allow for an earth cover of up to 1,5 m. If there are imposed traffic loads or a
greater earth cover, calculation is expected to be carried out.
This document is not applicable to tanks used for storage and/or supply of fuel/gas for building
heating/cooling systems, and of hot or cold water not intended for human consumption, nor to loads and
special measures necessary in areas subject to risk of earthquakes.
Guidance on installation of tanks is presented in Annex A, which does not include special measures that
might be necessary in areas subject to flooding.
This document is not applicable for the storage of liquids having dangerous goods classes listed in Table 1
because of the special dangers involved.

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This Technical Report gives guidance for the design of a vessel using the standard EN 13121-3 GRP tanks and vessels for use above ground. The calculation is done according to the advanced design method given in EN 13121-3:2016, 7.9.3 with approved laminates and laminate properties.

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ISO/IEC 17025:2017 specifies the general requirements for the competence, impartiality and consistent operation of laboratories.
ISO/IEC 17025:2017 is applicable to all organizations performing laboratory activities, regardless of the number of personnel.
Laboratory customers, regulatory authorities, organizations and schemes using peer-assessment, accreditation bodies, and others use ISO/IEC 17025:2017 in confirming or recognizing the competence of laboratories.

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This European Standard specifies the requirements for leak detection systems - class V for use with systems designed for fuels which are flammable, having a flash point up to but not exceeding 100 °C.

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This standard gives requirements and the corresponding test/assessment methods applicable to leak detection kits, based upon volumetric loss from within the tank or pressurised pipework system. The kits are usually composed by:
- measuring device
; - evaluation device
; - alarm device

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This standard gives requirements and the corresponding test/assessment methods applicable to leak detection kits based on the drop of the liquid level in the leak detector header tank. The kits are usually composed of:
- sensing device;
- evaluation device;
- alarm device.

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This standard gives requirements and the corresponding test/assessment methods applicable to leak detection lining kits and leak detection jacket kits. Leak detection lining kits and leak detection jackets kits intended to be used as post-installed to create an interstitial space or leakage containment in single skin underground or above ground, non-pressurized, tanks designed for water polluting liquids. The kit has to be used only in conjunction with leak detection kits covered by prEN 13160-2 to prEN 13160-4.

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This standard gives requirements and the corresponding test/assessment methods applicable to leak detection kits based on the detection of the presence of liquid and/or vapour in interstitial spaces, leakage containments or monitoring wells. The kits are usually composed by:
- sensing device(s);
- evaluation device;
- alarm device.

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This European Standard specifies the general principles for leak detection systems for use with double-skin tanks, single-skin tanks and pipework designed for water polluting fluids.

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This standard gives requirements and the corresponding test/assessment methods applicable to leak detection kits (leak detector) based on the measurement of pressure change. Leak detection kits are intended to be used with double skin, underground or above ground, pressurized or non-pressurized, tanks or pipework designed for water polluting liquids/fluids. The kits are usually composed of:
- measuring device;
- evaluation device;
- alarm device;
- pressure generator;
- pressure relief device;
- liquid stop device;
- condensate trap.

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This European Standard specifies requirements and the corresponding test/assessment methods applicable to overfill prevention devices without closure device.
The overfill prevention device is usually composed of
-  sensor,
-  electric-mechanical interface.
These overfill prevention devices intended to be used in/with underground or above ground, non-pressurised, metallic or non-metallic, static tanks designed for liquid fuels.
NOTE   In further text, for liquid fuels the term liquid is used.

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This European Standard gives requirements and the corresponding test/assessment methods applicable to overfill prevention devices with closure device. The devices are usually composed by
-  sensor,
-  evaluation device,
-  shut-off and / or alarm device.
Overfill prevention devices intended to be used in/with underground or above ground, non-pressurised, static tanks designed for liquid fuels.

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This part of EN 13121 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 part of EN 13121 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 part of EN 13121 also requires the items in Clause 5 to be fully documented.
This part of EN 13121 covers vessels and tanks subject to temperatures between – 40 °C and 120 °C.
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 this standard shall be maintained and such tanks and vessels shall only be designed in accordance with the advanced design method given in 7.9.2.
Excluded from this part of EN 13121 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).-

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This European Standard is applicable to the construction and testing of drains and sewers normally buried in the ground and usually operating under gravity. The construction of pipelines operating under pressure is covered by this European Standard together with EN 805 as appropriate. This European Standard is applicable to drains and sewers installed in trenches, under embankments or above ground. For trenchless construction EN 12889 applies. Additionally other local regulation should be taken into account e.g. concerning health and safety pavement reinstatement and requirements for tightness testing.
This standard does not apply for planning and design in accordance with EN 752.

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The standard specifies requirements for materials, physical properties and performance for blow moulded and rotationally moulded polyethylene single tanks, with or without reinforcement, for the above ground storage of chemical liquids except water and those liquids dealt with by EN 13341.
It is only applicable to static blow moulded or rotationally moulded polyethylene tanks, which are subjected to atmospheric pressures, and having a volume of 400 l to 10 000 l. Except for periodic temperature fluctuation their normal operating temperature does not exceed 25 °C.

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This International Standard contains requirements for the competence of bodies performing inspection and for the impartiality and consistency of their inspection activities. It applies to inspection bodies of type A, B or C, as defined in this International Standard, and it applies to any stage of inspection.

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  • Standard – translation
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This document specifies requirements for materials, physical properties and performance of single blow moulded and rotationally moulded polyethylene tanks and of rotationally moulded tanks made of anionically polymerized polyamide 6, with or without reinforcements, for above ground storage of domestic heating oil, kerosene and diesel fuels for the supply of building heating/cooling systems.
It is only applicable to static blow moulded and rotationally moulded polyethylene tanks and to rotationally moulded tanks made of anionically polymerized polyamide 6 that are subject to atmospheric pressure, but not subject to any external loading and have a capacity from 400 l up to 10 000 l.

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This European Standard describes the requirements for and methods of testing of combined systems with tile and brick layers which are applied to concrete or metallic process engineering equipment that will come in contact with chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners or having been given by national regulations1)). The standard applies to systems which serve one or more of the following purposes: to protect the component from adverse effects of aggressive substances; to protect waters (e.g. ground water) against hazardous substances; to protect the charge from becoming contaminated by components released from the substrate material; to achieve a particular surface quality. The described combined systems can be used for concrete or metallic process engineering equipment that will come into contact with chemical substances. The combined system is a combination of: a coating according to EN 14879-2 or EN 14879-3 with an additional layer of tiles or bricks embedded in cement mortar, resin based mortar and/or potassium silicate mortar as an adhesive bonding cement (referred to simply as cement in this standard); or a lining according to EN 14879-4 or EN 14879-5 with an additional layer of tiles or bricks embedded in cement mortar, resin based mortar and/or potassium silicate mortar as an adhesive bonding cement (referred to simply as cement in this standard). For design and preparation of substrate, see EN 14879-1.

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This document describes the requirements for and methods of testing of organic linings which are applied to concrete process engineering equipment that will come in contact with aggressive chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners).
The standard applies to linings which serve one or more of the following purposes:
-   to protect the component from damaging effects of aggressive substances;
-   to protect waters (e.g. ground water) from harmful substances;
-   to achieve a particular surface quality.
The different  lining systems are:
a)   bonded linings;
b)   mechanically fixed linings;
c)   loose linings of sheeting material;
d)   loose linings of pre-formed pieces or lining units.
Handling of aggressive or water pollutant materials is understood to include
a)   storage;
b)   filling;
c)   loading and unloading;
d)   manufacture;
e)   treatment;
f)   use.

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This document describes the requirements for and methods of testing of organic linings which are applied to metallic process engineering equipment that will come in contact with chemical substances. The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract
partners )).
The standard applies to linings which serve one or more of the following purposes:
-   to protect the component from adverse effects of aggressive substances;
-   to protect waters (e.g. ground water) from harmful substances;
-   to protect the charge from becoming contaminated by components released from the substrate material;
-   to achieve a particular surface quality.
This standard applies to vessels, apparatus, piping parts and other components for process plants made of metallic substrate materials which are in contact with media and are provided with a surface protection made of
a)   prefabricated, natural or synthetic rubber based sheeting (subsequently named rubber lining), to be
applied in the workshop or on site;
b)   prefabricated, phenol formaldehyde or epoxy resin based sheeting (subsequently named duroplastic lin-ing), to be applied in the workshop only;
c)   prefabricated,  thermoplastic products (e.g. foils, sheeting, plates, pipes) (subsequently named thermo-plastic lining), to be applied  in the workshop or on site.
The standard specifies the requirements, acceptance inspection, packaging, transport, storage, installation and external finish of organic linings for metallic materials.
The tests described in this standard are intended for verification of the suitability of sheeting used for linings and for acceptance inspection to be carried out on the products during or after application of the lining or as part of routine inspections to determine any changes effected in the lining during service.

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TC - Modification to Table A.1

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This European Standard specifies the requirements for and methods of testing of organic coatings which are applied to concrete process engineering equipment that will come in contact with aggressive chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners).
The standard does not cover coatings as in EN ISO 12944-1, but it does apply to coatings which serve one or more of the following purposes:
-   to protect the component from damaging effects of aggressive substances;
-   to protect waters (e.g. ground water) from harmful substances;
-   to protect the charge from becoming contaminated by components released from the substrate material;
-   to achieve a particular surface properties.
The different coating systems are:
a)   impregnation, seals, thin coatings (applied by brushing, spraying or rolling);
b)   high-build coatings (applied by brushing, spraying, rolling, trowelling or pouring (self-levelling));
c)   laminate coatings;
d)   resinous screed;
e)   mastic asphalt screed with a waterproofing layer;
f)   combinations of the above coatings.
Table 1 shows the coating methods to be employed for various types of concrete members.
Handling of aggressive or water pollutant materials is understood to include:
storage;
1)   filling;
2)   loading and unloading;
3)   manufacture;
4)   treatment;
5)   use.

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This European Standard specifies the requirements for and methods of testing of organic coatings which are applied to metallic process engineering equipment that will come in contact with chemical substances (liquids, solids and gases). The requirements specified here may be used for the purposes of quality control (e.g. as agreed between the contract partners or been given by national regulations).
The standard does not cover coatings as in EN ISO 12944-1, but it does apply to coatings which serve one or more of the following purposes:
-   to protect the component from adverse effects of aggressive substances;
-   to protect waters (e.g. ground water) against hazardous substances;
-   to protect the charge from becoming contaminated by components released from the substrate material;
-   to achieve a particular surface properties.
The described coatings are to be used for metallic process engineering equipment that will come in contact with chemical substances. The different coating systems are:
-   laminate coating systems which contain cold-curing resins;
-   trowelled coating which contain cold-curing resins;
-   sprayed coating systems which contain resins (in special cases, such coatings may also be applied by brushing, rolling, flow coating, dipping, or by other means, such as providing sleeving for nozzles);
-   powder coating systems which contain organic materials (powder coatings may be used as corrosion protection or for non-stick purposes).
For design and preparation of substrate see EN 14879-1.

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This European Standard describes the terminology, the design and the preparation of the substrate of
industrial apparatus for the protection against corrosion caused by aggressive media. These industrial apparatus include, for example, reaction tanks, storage tanks, floors in industrial plants, in general for production and handling of chemicals.
The protection is applicable to metallic and concrete structures.
Beside the protection of the apparatus, the protection of the media itself against pollution is also considered in this series of European Standards EN 14879.
A protection against corrosion caused by atmospheric exposure (as for example according to EN ISO 12944-4) is not included in the scope of this series of European Standards EN 14879.
Corrosion protection systems according to this series of European Standards EN 14879 are:
1)  Thick coatings normally of 1 mm or more thick.
2)  Linings made of pre-fabricated sheets respectively plate materials.
3)  Combined linings with tile and brick layers.

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This document specifies the requirements for metallic shop fabricated cylindrical, horizontal steel tanks, single and double skin for the aboveground storage of water polluting liquids (both flammable and non-flammable) within the following limits:
-   from 800 mm up to 3 000 mm nominal diameter and,
-   up to a maximum overall length of 6 times the nominal diameter and,
-   for liquids with a maximum density of up to 1,9 kg/l and,
-   with an operating pressure (Po) of maximum 1,5 bar (abs.) and,
-   where double skin tanks with a vacuum leak detection system are used the cinematic viscosity of the stored media shall not exceed 5 ´ 10-3 m2/s.
This document is applicable for normal ambient temperature conditions (- 20 °C to + 50 °C). Where temperatures are outside this range, additional requirements need to be taken into account.
This document is not applicable for the storage of liquids having dangerous good classes listed in Table 1 because of the special dangers involved.
Table 1 - List of dangerous goods the storage of which are not covered by this document
UN-classification   Storage media
Class 1                     Explosives
Class 4.2                  Substances liable to spontaneous combustion
Class 4.3                  Substances which in contact with water emit flammable gases
Class 5.2                  Organic peroxides
Class 6.2                  Infectious substances
Class 7                   Radioactive material, hydrocyanic or hydrocyanic solvent liquids, metalcarbonyls, hydrofluoracid, bromide liquids
NOTE   The classifications referred to are those adopted by the United Nations Committee of Experts on the Transport of Dangerous Goods (not to be interpreted as tank classes described in 3.1.4).
This document does not cover the installation of tanks which might be subject to local regulations involving pollution control.

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This document gives requirements for delivery, installation and maintenance of GRP tanks and vessels in accordance with prEN 13121- 3.

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This European Standard 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.

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This European Standard gives requirements for acceptance and usage conditions of raw materials for GRP tanks and vessels with or without lining for storage or processing of fluids, factory made or site built, non pressurised or pressurised, for use above ground.

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This EN specifies mastic asphalts for waterproofing, states their characteristics, the test methods to be used to verify these characteristics, and their manufacturing and transport recommendations. It applies to mastic asphalts used for waterproofing or by application on polymer bitumen sheets in the construction and civil engineering fields, such as roofing, parking, tanking, bridge decks (concrete and steel). It does not include functional requirements to the installed products.

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This Part 1 of European Standard EN 976 specifies the requirements and associated test methods for horizontal, cylindrical single walls tanks made of glass reinforced thermosetting resins (hereafter called tanks), and for their accessories, used for the underground non-pressure storage of liquid petroleum based fuels. The tanks specified by this European Standard are tanks with one or more compartments and with or without the possibility of leak detection.

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This part 2 of this European standard EN 976 specifies the requirements for the transportation, site handling, storage and installation of horizontal, cylindrical single wall tanks made of glass reinforced thermosetting resins used for the underground non-pressure storage of liquid petroleum based fuels, complying with the requirement of EN 976-1.

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