This document specifies the minimum requirements for the design, manufacture and testing of centrifugal pumps for cryogenic service.
This document does not apply to reciprocating pumps.
This document also gives guidance on the design of installations.
It does not specify requirements for operation or maintenance.
NOTE            For general requirements for materials used in cryogenic fluid service, see ISO 21029-1, ISO 20421-1 or ISO 21009-1.

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This document specifies a procedure for the evaluation of centreline segregation of continuously cast slabs, including sampling, sample preparation and evaluation method. This document is applicable for low carbon steel slabs for pipe production manufactured by continuous casting. These steels have a typical chemical composition as follows (mass percentages): — C ≤ 0,12 % — Mn ≤ 2,0 % — Si ≤ 0,5 % — Ti + Nb + V ≤ 0,2 % The common dimensions of these slabs are in the following ranges: — Slab width: 800 mm to 2 600 mm — Slab thickness: 150 mm to 450 mm The evaluation methods covered by this document are based on macroscopic etching of slab samples followed by visual inspection by means of human eye or camera systems. The procedures for sampling described in 5.1 to 5.3 of this document are applicable to steels slabs in general (e. g. other steel grades or dimensions). However, the etching procedure (see 5.4) in combination with the evaluation methods described in Clause 6 have been developed especially for the application on pipeline steels as given above. Thus, they are not applicable to other steel grades, product types or dimensions without a prior validation. Any extension or modification beyond the scope of this document necessitates a separate agreement between producer and customer.

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This document specifies the operational procedures and best practices when checking transportation racks for LPG cylinders before and during loading and unloading prior to the vehicles going on the road and at any break during the journey.
This document applies to racks containing transportable refillable LPG cylinders of water capacity from 0,5 l up to and including 150 l.
This document applies to the following equipment:
-   rack frame/structure;
-   rack closures;
-   rack fixing equipment or accessories on to the vehicle.
This document applies to checks performed:
-   at cylinder filling plants and depots;
-   or at cylinder manufacturing and/or refurbishment facilities;
-   or at any place where racks are used or moved.
This document also provides guidance and examples for rack maintenance and repair procedures, including rejection criteria and for establishing operational procedures. Transportation racks are also called stillages, pallets or racks (see Clause 3).
This document does not cover the design and the manufacturing of racks.
This document does not apply to presentation display racks at points of sale.

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This document specifies the requirements for the design, performance and testing of fittings made of malleable cast iron (see also Clause 5 "Materials") with compression ends for polyethylene piping systems.
This document applies to piping systems in polyethylene (PE) materials for different application fields, such as supply and distribution of gas, water for general purposes (irrigation, etc.) as well as for human consumption, aqueous liquids and pressurized air.
NOTE   Products complying with this document used for water applications intended for human consumption are expected to comply with the relevant national, regional or local regulatory provisions applicable in the place of use. Due to the variety and dynamic of the requirements, it is advisable to check the compliance.
The malleable cast iron fittings specified in this document are of compression end type for the connection of PE pipes or of transition type with combined compression ends for pipes in different materials or with combined compression and threaded ends in conformance with EN 10226 1. Their range of sizes covers nominal outside diameters of PE pipes dn 16 mm to dn 110 mm (DN 10 to DN 100) and pipe thread sizes 3/8 to 4.

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This document specifies the requirements for the design and performance of threaded pipe fittings in malleable cast iron with black or hot dip galvanized surface.
These fittings are for general purposes for the transmission of fluids and gases up to the limits of operating pressure and operating temperature specified in this document. They are intended for the connection of elements threaded with sizes 1/8 to 6 (DN 6 to DN 150).
Fittings with alternative permanent coatings or permanent coatings on top of hot dip galvanizing do not fall under the scope of this document.
NOTE   One main use is for the connection of non-alloy steel tubes according to EN 10255 and with support of the thread joint by using sealing materials according to the EN 751 series.

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This document specifies the functional requirements relevant for design, materials, construction, testing, operation and maintenance of gas pressure control stations to ensure their reliability in terms of safety of the station itself and the downstream system and continuity of service.
This document is applicable for gas pressure control stations which are part of gas transmission or distribution systems for hydrogen, and hydrogen rich, and methane rich gases. Additional requirements in the case of gases heavier than air and/or toxic or corrosive gases are not covered by this document.
This document does not apply to gas pressure control stations in operation prior to the publication of this document. However, Annex D of this document can be used as guidance for the evaluation of stations in operation prior to the publication of this document, regarding the change of the type of gas, e.g. repurposing for the use with hydrogen.
The stations covered by this document have a maximum upstream operating pressure, which does not exceed 100 bar. For higher maximum upstream operating pressures, this document can be used as a guideline.
If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not exceed 16 bar and the design flow rate is equal to 2000 kW based on the gross calorific value or less, EN 12279 applies.
This document contains the basic system requirements for gas pressure control stations. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained in the appropriate European Standards.
NOTE   For combined control and measuring stations, the additional requirements of EN 1776 can apply.
The requirements in this document do not apply to the design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring. These facilities are covered by the appropriate European Standards, where existing, or applicable national standards.
The requirements of this document are based on good gas engineering practice under conditions normally encountered in the gas industry. Requirements for unusual conditions cannot be specifically provided for, nor are all engineering and construction details prescribed.
The objective of this document is to ensure the safe operation of such stations. This does not, however, relieve all concerned of the responsibility for taking the necessary care and applying effective quality and safety management during the design, construction, operation and maintenance.

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This document specifies equipment and accessories for road tankers used for the transport of Liquefied Petroleum Gas (LPG) and identifies the equipment that is considered necessary to ensure that filling, transportation and discharge operations can be carried out safely. It specifies the requirements for the assembly of the accessories and the vehicle LPG equipment to the road tanker. This document also identifies additional equipment and accessories that can be used on road tankers carrying LPG.
This document does not preclude the use of alternative designs, materials and equipment testing which provide the same or a higher level of safety. ADR [9] requires that such alternative technical codes be recognized by the competent authority, provided that the minimum requirements of section 6.8.2 of ADR [9] are complied with.
This document does not apply to “tank-containers” or “battery-vehicles” used for the transport of LPG.

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This Part of this document specifies requirements for the design of unfired pressure vessels covered by EN 13445-1:2019 and constructed of steels in accordance with EN 13445-2:2019.
EN 13445-5:2019, Annex C specifies requirements for the design of access and inspection openings, closing mechanisms and special locking elements.
NOTE This Part applies to design of vessels before putting into service. It may be used for in service calculation or analysis subject to appropriate adjustment.

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This document specifies the requirements for two types of rubber hoses and rubber hose assemblies for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of 10 bar (1,0 MPa).
Both types of hose are designed for:
a)   use with hydrocarbon fuels, having an aromatic hydrocarbon content not exceeding 50 % by volume and containing oxygenated compounds up to 15 %;
b)   operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of −50 °C to 70 °C when stored in static conditions.
This document is not applicable to hoses and hose assemblies for LPG, aviation fuel systems, fuel station systems and marine applications.

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This document specifies the housing dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back-up rings). The dimensions of the O-rings (d1 and d2), size codes (SC) and tolerances conform to ISO 3601-1. This document also addresses different design approaches in industry, and this is reflected in the table structures for hardware dimensions. Using the O-ring as a starting point to design the optimal hardware dimensions is reflected in REF Table_tab_3 \r \h Tables 3 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0033000000 , REF Table_tab_5 \r \h 5 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0035000000 , and REF Table_tab_8 \r \h 8 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0038000000 . Using fixed hardware dimensions (i.e. bore/rod) and choosing the most appropriate O-ring to fit is reflected in REF Table_tab_4 \r \h Tables 4 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0034000000 and REF Table_tab_6 \r \h 6 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0036000000 . Housing dimensions for the O-rings intended for aerospace applications that are specified in ISO 3601-1 are addressed in REF Annex_sec_A \r \h Annex A 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C00000041006E006E00650078005F007300650063005F0041000000 . NOTE 1 It is expected that O-ring housing dimensions for special applications be agreed upon between the O-ring manufacturer and the user. NOTE 2 The term “housing”, in this document, is used to describe the groove or cavity, into which the O-ring is fitted, and the mating surface, which between them confine the O-ring.

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This document specifies the requirements for two types of rubber hoses and rubber hose assemblies for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of 10 bar (1,0 MPa).
Both types of hose are designed for:
a)   use with hydrocarbon fuels, having an aromatic hydrocarbon content not exceeding 50 % by volume and containing oxygenated compounds up to 15 %;
b)   operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of −50 °C to 70 °C when stored in static conditions.
This document is not applicable to hoses and hose assemblies for LPG, aviation fuel systems, fuel station systems and marine applications.

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This document specifies the general aspects of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see Table 1).
This document also specifies the basis for the test parameters for the test methods referred to in the ISO 15875 series.
This document covers a range of service conditions (application classes), design pressures and pipe dimension classes. The ISO 15875 series does not apply to values of design temperature (TD), maximum temperature (Tmax) and malfunction temperature (Tmal), as well as service times in excess of those defined in Table 1.

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This document specifies the characteristics of the fitness for purpose of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures appropriate to the class of application (see ISO 15875-1:2025, Table 1).
This document also specifies the test parameters for the test methods referred to herein.
This document is applicable to joints between pipes conforming to ISO 15875-2 and fittings made of plastics and non-plastics materials conforming to ISO 15875-3, for hot and cold water installations.

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This document specifies the characteristics of fittings for crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems) and for heating systems under design pressures and temperatures according to the class of application (see ISO 15875-1:—, Table 1).
This document also specifies the test parameters for the test methods referred to herein.
This document is applicable to fittings made from PE-X or other plastics or non-plastics materials, which are intended to be connected to pipes conforming to ISO 15875-2 for hot and cold water installations, whereby the joints conform to the requirements of ISO 15875-5.
This document is applicable to fittings of the following types:
—     mechanical fittings;
—     electrofusion fittings;

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This document specifies the characteristics of pipes for crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see ISO 15875-1:2025, Table 1).
This document also specifies the test parameters for the test methods referred to in this document.
It is applicable to PE-X pipes with and without barrier layer.
This document is applicable to PE-X pipes for hot and cold water installations, which are intended to be connected to fittings conforming to ISO 15875-3, whereby the joints conform to the requirements of ISO 15875-5.

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This document specifies a test method to assess ductility of the fusion joint interface of polyethylene electrofusion socket assemblies for use in pipe systems for the distribution of fluids. This method is applicable to assemblies, with nominal outside diameters greater than or equal to 90 mm.

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This document specifies the characteristics and the requirements of air gap with injector Family A, Type D for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document is applicable to air gaps in factory-assembled products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests can be required to verify the efficacy of the solution in practical use.
The AD device is intended to be used in potable water installations according to EN 806 (all parts).

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This document is applicable to the design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and –196°C. It specifies the requirements for testing, drying, purging, cool-down and decommissioning of refrigerated liquefied gas storage tank systems.
The tank systems covered by this document are used to store large volumes of hydrocarbon products, ammonia and other non-hydrocarbon gases with low temperature boiling points, generally called “Refrigerated Liquefied Gases” (RLGs). Typical products stored in the tank systems are: methane, ethane, propane, butane, ethylene, propylene, butadiene (this range includes Liquefied Natural Gas (LNG) and Liquefied Petroleum Gas (LPG), ammonia, nitrogen, oxygen and argon.
NOTE Properties of the gases are given in Annex A EN 14620-1:2024.
This document provides requirements and specifies measures to be taken following completion of major tank construction activities and before the tank is brought in to service. It provides requirements for full-height and partial height hydrostatic testing to check the structural integrity of tanks and the capacity of the foundations. Settlement monitoring of the foundations at this stage form the starting point of an annual settlement monitoring programme for the tank foundation. Recommendations are given for marker systems for such monitoring. Requirements for water quality of both fresh water and seawater used during hydrotest, are provided to avoid the risk of corrosion of tanks and appurtenances.
Guidance and requirements for positive and negative pneumatic tests to further check tank structural integrity, leak tightness of welds and the function of pressure and vacuum relief valve systems are also given. Requirements specific to testing of double wall and membrane type tanks is included.
Rules and procedures for commissioning activities, including drying and purging with inert and product gas are provided, including required oxygen concentrations for various RLG’s. The document also provides guidance for cool-down procedures and suggestions for temperature monitoring, including an informative Annex A.
For major maintenance inspection or at the end of the life of the tank, decommissioning will be required. Guidance on safe decommissioning processes is provided.
Suggested procedures for Global testing for membrane tanks are provided in informative Annex B
This document is applicable to the design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and -196°C.

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This document specifies requirements, test and assessment methods, marking, labelling and packaging applicable to overfill prevention devices with closure device. The devices are usually composed by:
-   sensor;
-   evaluation device;
-   closure device.
Overfill prevention devices intended to be used in/with underground and/or above ground, non-pressurized, static tanks designed for liquid fuels.
NOTE   Liquid fuel means liquids for internal combustion engines, heating/cooling boilers and generators.

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This document defines terms for the manufacture and use of gas cylinders and other pressure receptacles and their fittings.

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This document specifies the procedures to be followed when connecting cylinder valves to gas cylinders. It specifically applies to all valve and cylinder combinations connected with ISO screw threads as specified in ISO 11363-1 and ISO 15245-1. It defines procedures and practices for inspection and preparation prior to valving for both taper and parallel screw threads.
Torque values are given in Annex A for steel and aluminium alloy gas cylinders including composite cylinders with steel or aluminium alloy neck boss.
NOTE            The procedures and practices specified in this document can be beneficially applied to other valve to cylinder screw thread connection systems. ISO/TR 11364 lists the valve to gas cylinder threads in use worldwide. It gives details of the thread identification codes, whether the threads are interchangeable with ISO threads and if the taping procedure and torque values specified in this document can be used. ISO/TR 11364 gives clear guidance for the method and torque for all listed inlet threads, which are not interchangeable.

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This document specifies a method for the evaluation of the ductility of the fusion joint interface of assemblies of polyethylene (PE) pipe and electrofusion saddles, intended for the conveyance of fluids. NOTE The applicability of this method depends upon the design of the saddle. If not applicable, the strip-bend test according to ISO 21751[1 08D0C9EA79F9BACE118C8200AA004BA90B0200000008000000100000005200650066006500720065006E00630065005F007200650066005F0031000000 ] is considered an alternative.

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This document, together with EN 13476-1, specifies the definitions and requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are intended for use in non-pressure underground drains and sewers for foul wastewater.
NOTE 1   Products complying with this document can also be used in non-pressure underground drains and sewers for surface water.
This document is applicable to pipes and fittings with smooth internal and external surfaces, designated as Type A.
This document also specifies test methods and test parameters.
This document is applicable to:
a)   structured-wall pipes and fittings, which are intended to be used buried underground outside the building structure; reflected in the marking of products by “U”;
b)   structured-wall pipes and fittings, which are intended to be used buried underground both outside (application area code “U”) and within the building structure, reflected in the marking of products by “UD”.
This document is applicable to structured-wall pipes and fittings with or without an integral socket with elastomeric ring seal joints as well as welded and fused joints.
This document is applicable to a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes, application areas, tolerance classes and gives recommendations concerning colours.
NOTE 2   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

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This document gives guidance and requirements for the assessment of conformity of materials, products, joints and assemblies in accordance with the applicable part(s) of EN 13476 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of certification procedures.
NOTE 1   A test matrix provides an overview of the testing scheme in Annex A, Table A.1.
NOTE 2   If certification is involved, the certification body operating in accordance with EN ISO/IEC 17065 [1] and EN ISO/IEC 17020 [2] is considered to be competent.
In conjunction with EN 13476-1:2025, EN 13476-2:2025 and EN 13476-3:2025 this document is applicable to Plastics piping systems for non-pressure underground drains and sewers — Structural-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE).
The application area code used in the marking of pipes and fittings indicates for which application area(s) the products are intended:
U: for the area more than 1 m from the building to which the buried piping system is connected, and
UD: for application area U and the area under and within 1 m from the building where the pipes and the
fittings are buried in ground and are connected to the soil and waste discharge system of the building.

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This document, together with EN 13476-1, specifies the definitions and requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are intended for use in non-pressure underground drains and sewers for foul wastewater.
NOTE 1   Products complying with this document can also be used in non-pressure underground drains and sewers for surface water.
This document is applicable to pipes and fittings with smooth internal and profiled external surfaces, designated as Type B.
This document also specifies test methods and test parameters.
This document is applicable to:
a)   structured-wall pipes and fittings, which are intended to be used buried underground outside the building structure, reflected in the marking of products by “U”; and
b)   structured-wall pipes and fittings, which are intended to be used buried underground both outside (application area code “U”) and within the building structure, reflected in the marking of products by “UD”.
This document is applicable to structured-wall pipes and fittings with or without an integral socket with elastomeric ring seal joints as well as welded and fused joints.
This document is applicable to a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes, application areas, tolerance classes and gives recommendations concerning colours.
NOTE 2   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

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This document specifies the procedure and gives guidance for structural design of buried thermoplastics piping systems under various conditions of loading for non-pressure application. This document can be used for pressure piping systems before applying operating pressure.
This document is applicable to all solid and structured wall thermoplastics piping systems covered by an EN standard developed by CEN/TC 155.
NOTE 1   PE piping systems for gas infrastructure are covered in EN 12007-2 [1].
This document gives guidance for structural design by either validated field experience or calculation, and contents of EN 476 [2], EN1295-1 [3] and EN 1610 [4] have been considered.
At the design stage, precise details of types of soil and installation conditions are not always available. The choice of design assumptions is left to the judgement of the designer/specifier. In this respect, this technical specification provides general indications and advice.
NOTE 2   It is the responsibility of the designer/specifier to make the appropriate selection of the design aspects, taking into account any relevant National regulation and installation practices or codes.

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This document, together with EN 13476-2 and EN 13476-3, specifies the definitions and general requirements for pipes, fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) structured-wall piping systems that are intended for use in non-pressure underground drains and sewers for foul wastewater.
NOTE 1   Products complying with this document can also be used in non-pressure underground drains and sewers for surface water.
This document is applicable to:
a)   structured-wall pipes and fittings, which are to be used buried in the ground outside a building structure only; reflected by the marking of products by “U”;
b)   structured-wall pipes and fittings, which are to be used buried in ground both outside (application area code “U”) and within a building structure (application area code “D”); reflected in the marking of products by “UD”.
In conjunction with EN 13476-2 and EN 13476-3, it is applicable to structured-wall pipes and fittings with or without an integral socket with elastomeric ring seal joints, as well as welded and fused joints.
This part specifies general aspects and gives guidance concerning a national selection of requirement levels and classes where EN 13476-2 and EN 13476-3 provide options.
EN 13476-2 and EN 13476-3 specify material characteristics, dimensions and tolerances, test methods, test parameters and requirements for pipes with smooth internal and external surfaces, Type A, and pipes with smooth internal and profiled external surfaces, Type B, respectively.
This document, together with EN 13476-2 and EN 13476-3, is applicable to a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes and tolerance classes and offers recommendations concerning colours.
NOTE 2   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
NOTE 3   Pipes, fittings and other components conforming to any plastic product standards referred to in Clause 2 can be used with pipes and fittings conforming to this document, when they conform to the requirements for joint dimensions given in EN 13476-2 and to the performance requirements given in Clause 9.

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This document specifies the characteristics and the requirements of air gap with injector Family A, Type D for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document is applicable to air gaps in factory-assembled products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests can be required to verify the efficacy of the solution in practical use.
The AD device is intended to be used in potable water installations according to EN 806 (all parts).

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This document specifies the minimum requirements for the design, manufacture and testing of centrifugal pumps for cryogenic service.
This document does not apply to reciprocating pumps.
This document also gives guidance on the design of installations.
It does not specify requirements for operation or maintenance.
NOTE            For general requirements for materials used in cryogenic fluid service, see ISO 21029-1, ISO 20421-1 or ISO 21009-1.

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This document specifies the minimum requirements for the design, manufacture and testing of centrifugal pumps for cryogenic service. This document does not apply to reciprocating pumps. This document also gives guidance on the design of installations. It does not specify requirements for operation or maintenance. NOTE For general requirements for materials used in cryogenic fluid service, see ISO 21029-1, ISO 20421-1 or ISO 21009-1.

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This document specifies the general aspects of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see Table 1).
This document also specifies the basis for the test parameters for the test methods referred to in the ISO 15875 series.
This document covers a range of service conditions (application classes), design pressures and pipe dimension classes. The ISO 15875 series does not apply to values of design temperature (TD), maximum temperature (Tmax) and malfunction temperature (Tmal), as well as service times in excess of those defined in Table 1.

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This document specifies the characteristics of fittings for crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems) and for heating systems under design pressures and temperatures according to the class of application (see ISO 15875-1:—, Table 1).
This document also specifies the test parameters for the test methods referred to herein.
This document is applicable to fittings made from PE-X or other plastics or non-plastics materials, which are intended to be connected to pipes conforming to ISO 15875-2 for hot and cold water installations, whereby the joints conform to the requirements of ISO 15875-5.
This document is applicable to fittings of the following types:
—     mechanical fittings;
—     electrofusion fittings;

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This document specifies determining sound power levels of fans under standardized laboratory conditions from sound pressure levels measured in a reverberant room. This document is applicable for determination of the acoustic performance of fans. This document can additionally be applied to determine the acoustic performance of fans combined with an ancillary device, such as a roof cowl or damper or, where the fan is fitted with a silencer, the sound power resulting from the fan and silencer combination. For guidance of testing with ancillary items, see Annex C. This document applies to fans as defined in ISO 13349-1. It is limited to the determination of airborne sound emission for the specified set-ups. Vibration is not measured, nor is the sensitivity of airborne sound emission to vibration effects determined. This document is intended to be used in conjunction with ISO 5136, which covers the in-duct method, and ISO 10302-1 for small fans. The size of fans which can be tested in accordance with this document is limited only by the practical aspects of the test set-up. Test fan dimensions and air performance will control the room size. NOTE Based on usage, small fans can be tested according to this document or to ISO 10302-1. For reverberant field tests, the size of equipment under test is limited to less than 2 % of the room volume. For low power fans (up to 3 kW) that can be run from a domestic power supply (single phase AC at a voltage not exceeding 250 V and a current not exceeding 16 A), reference IEC 60704-2-7[18]. The test arrangements in this document establish the laboratory conditions necessary for a successful test. It is difficult to meet these requirements in situ and this document is not intended for field measurements. In these situations, users are reminded that the acoustic environment is unlikely to meet the specified conditions and there can be additional acoustic system effects where inlet and outlet conditions at the fan are less than ideal.

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This document specifies the characteristics of the fitness for purpose of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures appropriate to the class of application (see ISO 15875-1:2025, Table 1).
This document also specifies the test parameters for the test methods referred to herein.
This document is applicable to joints between pipes conforming to ISO 15875-2 and fittings made of plastics and non-plastics materials conforming to ISO 15875-3, for hot and cold water installations.

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This document specifies the characteristics of pipes for crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see ISO 15875-1:2025, Table 1).
This document also specifies the test parameters for the test methods referred to in this document.
It is applicable to PE-X pipes with and without barrier layer.
This document is applicable to PE-X pipes for hot and cold water installations, which are intended to be connected to fittings conforming to ISO 15875-3, whereby the joints conform to the requirements of ISO 15875-5.

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This document specifies the testing and calculating methods for sensible heating recovery seasonal performance factor of heat recovery ventilators (HRVs) covered by ISO 16494-1. This document also specifies the test conditions and the corresponding test procedures for determining the sensible heating recovery seasonal performance factor of HRVs. It is intended for use only for marking and comparison purposes.

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This document specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to EN 1555 2 and EN 1555 3 respectively.
Valves made from materials other than PE, designed for the supply of gaseous fuels conforming to the relevant standards can be used in PE piping systems according to EN 1555 (all parts), provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to EN 1555 3.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-1, EN 1555-2, EN 1555-3 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints and, joints with components of PE and other materials intended to be used under the following conditions:
a)   a maximum operating pressure, MOP, up to and including 10 bar  at a design reference temperature of 20 °C;
NOTE 1   For the purpose of this document and the references to ISO 8233, MOP is considered to be nominal pressure.
b)   an operating temperature between −20 °C to 40 °C.
For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in EN 1555 5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This document covers valve bodies designed for connection with pipes with a nominal outside diameter dn ≤ 400 mm.
NOTE 2   Additional information related to the installation of PE 100-RC systems is given in EN 1555-1:2025, Annex A.
NOTE 3   Additional information about the suitability of PE pipe systems for hydrogen and its admixtures is given in EN 1555-1:2025, Annex B.

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This document specifies the characteristics of pipes made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
NOTE 1   Additional information related to the installation of PE 100-RC systems is given in EN 1555-1:2025, Annex A.
NOTE 2   Additional information about the suitability of PE pipe systems for hydrogen and its admixtures is given in EN 1555-1:2025, Annex B.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-1, EN 1555-3, EN 1555-4 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:
a)   a maximum operating pressure, MOP, up to and including 10 bar  at a design reference temperature of 20 °C;
b)   an operating temperature between −20 °C and 40 °C.
For operating temperatures between 20 °C and 40 °C derating coefficients are specified in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
This document is applicable to three types of pipe:
-   PE pipes (outside diameter, dn) including any identification stripes;
-   PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter, dn) as specified in Annex A, where all PE layers have the same MRS rating;
-   PE pipes (outside diameter, dn) with a peelable and contiguous thermoplastics additional layer on the outside of the pipe (”coated pipe”) as specified in Annex B.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.

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This document gives requirements and guidance for the assessment of conformity of formulations, products and assemblies in accordance with EN 1401-1 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of third-party certification procedures.
NOTE 1 The quality management system is expected to conform to or is no less stringent than the relevant requirements to EN ISO 9001 [1].
NOTE 2 If third party certification is involved, the certification body is expected to be compliant with either EN ISO/IEC 17065 [2] or EN ISO/IEC 17021-series [3], as applicable.
NOTE 3 In order to help the reader, a basic test matrix is given in Annex A.
In conjunction with EN 1401-1, this document is applicable to piping systems made of unplasticized poly(vinyl chloride) (PVC-U) intended for non-pressure underground drainage and sewerage:
- buried in ground outside the building structure (application area code "U");
- both buried in ground within the building structure and outside the building structure (application area code "UD").

  • Technical specification
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This document specifies materials and the general aspects of polyethylene (PE) piping systems in the field of the supply of gaseous fuels.
NOTE   For the purpose of this document the term gaseous fuels include for example natural gas, methane, butane, propane, hydrogen, manufactured gas, biogas, and mixtures of these gases.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-2, EN 1555-3, EN 1555-4 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints and, joints with components of PE and other materials intended to be used under the following conditions:
a)   a maximum operating pressure, MOP, up to and including 10 bar  at a design reference temperature of 20 °C;
b)   an operating temperature between −20 °C and 40 °C.
For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.

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This document specifies the characteristics of fusion fittings made from polyethylene (PE) as well as of mechanical fittings for piping systems in the field of the supply of gaseous fuels.
NOTE 1   Additional information related to the installation of PE 100-RC systems is given in EN 1555-1:2025, Annex A.
NOTE 2   Additional information about the suitability of PE pipe systems for hydrogen and its admixtures is given in EN 1555-1:2025, Annex B.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with EN 1555-1, EN 1555-2, EN 1555-4 and EN 1555-5, this document is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:
a)   a maximum operating pressure, MOP, up to and including 10 bar , at a design reference temperature of 20 °C;
b)   an operating temperature between −20 °C and 40 °C.
For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in EN 1555-5.
The EN 1555 series covers a range of MOPs and gives requirements concerning colours.
This document is applicable for fittings of the following types:
a)   electrofusion socket fittings;
b)   electrofusion saddle fittings;
c)   spigot end fittings (for butt fusion using heated tools and electrofusion);
d)   mechanical fittings.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.
NOTE 3   The fittings can be, for example, in the form of couplers, saddles, equal and reduced tees, reducers, elbows, bends or end caps.

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This document specifies the procedure and gives guidance for structural design of buried thermoplastics piping systems under various conditions of loading for non-pressure application. This document can be used for pressure piping systems before applying operating pressure.
This document is applicable to all solid and structured wall thermoplastics piping systems covered by an EN standard developed by CEN/TC 155.
NOTE 1   PE piping systems for gas infrastructure are covered in EN 12007-2 [1].
This document gives guidance for structural design by either validated field experience or calculation, and contents of EN 476 [2], EN1295-1 [3] and EN 1610 [4] have been considered.
At the design stage, precise details of types of soil and installation conditions are not always available. The choice of design assumptions is left to the judgement of the designer/specifier. In this respect, this technical specification provides general indications and advice.
NOTE 2   It is the responsibility of the designer/specifier to make the appropriate selection of the design aspects, taking into account any relevant National regulation and installation practices or codes.

  • Technical specification
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This document is concerned with the assessment of fish survival in pumping stations and hydropower plants, defined as the fraction of fish that passes an installation without significant injury. It does not concern indirect consequences of such installations, usually included in the notions ‘fish safety’ or ‘fish-friendliness’, like avoidance of fish affecting migration, behavioural changes, injury during attempted upstream passage, temporary stunning of fish resulting in potential predation, or depleted oxygen levels.
This document applies to pumps and turbines in pumping stations and hydropower plants that operate in or between bodies of surface water, in rivers, in streams or estuaries containing resident and/or migratory fish stocks. Installations include centrifugal pumps (radial type, mixed-flow type, axial type), Archimedes screws, and water turbines (Francis type, Kaplan type, Bulb type, Straflo type, etc.).
The following methods to assess fish survival are described:
—   Survival tests involving the paired release of live fish, introduced in batches of test and control fish upstream and downstream of an installation, and the subsequent recapture in full-flow collection nets. The method is applicable to survival tests in the field and in a laboratory environment. (Clause 6);
—   A validated model-based computational method consisting of a blade encounter model and correlations that quantify the biological response to blade strike (Clause 7).
The computational method can be used to scale results from laboratory fish survival tests to full-scale installations operating under different conditions (Clause 8).
The survival tests and computational method can also be applied to open-water turbines, with the caveats mentioned in Annex C.
The results of a survival test or a computed estimation can be compared with a presumed maximum sustainable mortality rate for a given fish population at the site of a pumping station or hydropower plant. However, this document does not define these maximum rates allowing to label a machine as “fish-friendly”, nor does it describe a method for determining such a maximum.
This document offers an integrated method to assess fish survival in pumping stations and hydropower plants by fish survival tests and model-based calculations. It allows (non-)government environmental agencies to evaluate the impact on resident and migratory fish stocks in a uniform manner. Thus the document will help to support the preservation of fish populations and reverse the trend of declining migratory fish stocks. Pump and turbine manufacturers will benefit from the document as it sets uniform and clear criteria for fish survival assessment. Further, the physical model that underlies the computational method in the document, may serve as a tool for new product development. To academia and research institutions, this document represents the baseline of shared understanding. It will serve as an incentive for further research in an effort to fill the omissions and to improve on existing assessment methods.

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This document specifies a method for the determination of the strain hardening modulus, which is used as a measure for the resistance to slow crack growth of polyethylene. This document specifies how to obtain a strain hardening modulus measurement from “true stress vs. draw ratio” curves on compression moulded samples. Details of the necessary equipment, precision and sample preparation for the generation of data are given. This document provides a method that is valid for all types of polyethylene, independent from the manufacturing technology, comonomer or catalyst type used for pipes and fittings applications.

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This document specifies product category rules (PCR) for Environmental Product Declarations (EPDs), as described in EN ISO 14025 and EN 15942.
This document is applicable to:
-   functional unit as plastic piping systems buried outside building structure;
-   declared unit as one or more main structural components, as specified by the list of product standards provided in Annex CC.
Main structural components are:
-   pipes;
-   fittings (e.g. flange couplers, bends and reducers, valves and electrofusion fittings);
-   manholes, inspection chambers and infiltration boxes.
This document gives guidelines for both pressure and non-pressure applications.
The intended function of the system considered is to convey fluids according to EN 476 (for sewers, drain and surface water), EN 805 (water supply), or EN 12007 (gas supply).
This document provides in Annex DD a non-exhaustive list of application fields. In addition, the following applications and materials are not in scope of this document: GRP pipes and fittings, and district heating pipes.
This document specifies the rules for the product category of construction products as defined in and is intended to be used in conjunction with EN 15804+A2.
In addition to EN 15804+A2, this document specifies:
-   the functional unit (consisting of pipes, fittings, manholes and inspection chambers and ancillary components) and declared unit (consisting of pipes and/or fittings and/or manholes and /or inspection chambers);
-   the system boundaries and additional mandatory modules to be declared;
-   the processes to be included in the installation phase;
-   scenarios for module A4, A5;
-   use conditions for the use phase (B modules);
-   reference service life (RSL);
-   end of life scenarios.

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This document specifies product category rules (PCR) for Environmental Product Declarations (EPDs), as described in EN ISO 14025 and EN 15942.
This document is applicable to:
-   functional unit as plastics piping systems inside the building structure;
-   declared unit as one or more main structural components which are represented by pipes and fittings, as specified by the list of product standards provided in Annex CC.
This document gives guidelines for:
-   both pressure and non-pressure applications;
-   metal fittings (including manifolds) which are used in a plastic piping system.
The intended function of the system considered is to convey liquids according to EN 806 (for potable water supply), EN 1264 (for heating and cooling systems), EN 12828 (for radiators), EN 12056 (for soil and waste discharge and for water traps).
This document specifies product category rules of construction products as defined in and is intended to be used in conjunction with EN 15804+A2.
This document provides in Annex DD a non-exhaustive list of application fields. In addition, the insulated pipes are not in the scope of this document.
In addition to EN 15804+A2, this document specifies:
-   the functional unit (consisting of pipes, fittings and ancillary components) and declared unit (consisting of pipes and/or fittings);
-   the system boundaries and additional mandatory modules to be declared;
-   the processes to be included in the installation phase;
-   scenarios for module A4, A5;
-   reference service life (RSL);
-   end of life scenarios.

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This document specifies the general aspects of crosslinked polyethylene (PE-X) piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems), and for heating systems, under design pressures and temperatures according to the class of application (see REF Table_tab_1 \r \h Table 1 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0031000000 ). This document also specifies the basis for the test parameters for the test methods referred to in the ISO 15875 series. This document covers a range of service conditions (application classes), design pressures and pipe dimension classes. The ISO 15875 series does not apply to values of design temperature (TD), maximum temperature (Tmax) and malfunction temperature (Tmal), as well as service times in excess of those defined in REF Table_tab_1 \r \h Table 1 08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000C0000005400610062006C0065005F007400610062005F0031000000 .

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