Kemiteknik

Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 19 mar 2018
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This document is applicable to iron-based coagulants used for treatment of water intended for human consumption. It specifies analytical methods to be used for products described in EN 888, EN 889, EN 890, EN 891 and EN 14664.

Kommittébeteckning: SIS/TK 410 (Hydrogenteknik)
Källa: ISO
Svarsdatum: den 1 maj 2018
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This International Standard defines or recommends the minimum design, installation, commissioning, operation, inspection and maintenance requirements, for safety, and, where appropriate, for performance of public and non-public fueling stations that dispense gaseous hydrogen to light duty road vehicles (e.g. Fuel Cell Electric Vehicles).

NOTE 1 These requirements or recommendations are in addition to applicable national regulations and codes, which can prohibit certain aspects of this document.

NOTE 2 The dispensing of hydrogen outside the limits defined within this document, is outside the scope of this document. Therefore requirements or recommendations for dispensing of gaseous hydrogen should not be treated as applicable for example for cryogenic hydrogen dispensers.

While this document is targeted for the fueling of light duty hydrogen road vehicles, requirements and guidance for fueling medium and heavy duty road vehicles (e.g. buses, trucks) are also covered.

Many of the generic requirements within this Standard are applicable to fueling stations for other hydrogen applications, including but not limited to the following:

• fueling stations for motorcycles, fork-lift trucks, trams, trains, fluvial and marine applications;

• fueling stations with indoor dispensing;

• residential applications to fuel land vehicles;

• mobile fueling stations; and

• non-public demonstration fueling stations.

However, it should be noted that further, specific requirements that may be necessary for the safe operation of such fueling stations are not addressed in this Standard.

This Standard provides requirements for and guidance on the following elements of a fueling station (see Figure 1 and Figure 2):

— hydrogen production/delivery system

— delivery of hydrogen by pipeline, trucked in gaseous and/or liquid hydrogen, or metal hydride

storage trailers;

— on-site hydrogen generators using water electrolysis process or hydrogen generators using fuel

processing technologies;

— liquid hydrogen storage;

— hydrogen purification systems, as applicable;

— compression

— gaseous hydrogen compression;

— pumps and vaporizers;

— gaseous hydrogen buffer storage;

— pre-cooling device;

— gaseous hydrogen dispensers.

Figure 1 — Example of typical elements that a fueling station may consist of, including hydrogen supply

Figure 2 — Image of an example hydrogen fueling station

 

 

Kommittébeteckning: SIS/TK 410 (Hydrogenteknik)
Källa: ISO
Svarsdatum: den 1 maj 2018
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ISO 22734 defines the construction, safety and performance requirements of modular or factory-matched hydrogen gas generation appliances, herein referred to as hydrogen generators, using electrochemical reactions to electrolyse water to produce hydrogen.

ISO 22734 is applicable to hydrogen generators that use the following types of ion transport medium:

— group of aqueous bases;

— group of aqueous acids;

— solid polymeric materials with acidic function group additions, such as acid proton exchange membrane (PEM).

— solid polymeric materials with basic function group additions, such as anion exchange membrane (AEM).

ISO 22734 is applicable to hydrogen generators intended for industrial and commercial uses, and indoor and outdoor residential use in sheltered areas, such as car-ports, garages, utility rooms and similar areas of a residence.

Hydrogen generators that can also be used to generate electricity, such as reversible fuel cells, are excluded from the scope of ISO 22734.

Residential hydrogen generators that also supply oxygen as a product are excluded from the scope of ISO 22734.

Kommittébeteckning: SIS/TK 410 (Hydrogenteknik)
Källa: ISO
Svarsdatum: den 1 maj 2018
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This International Standard specifies the requirements for design, manufacture and testing of standalone or manifolded (for some specific tests such as bonfire) cylinders, tubes, and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 110 MPa, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels. Type 2 and 3 vessels with welded liners are excluded.

For an existing design already qualified for other applications (e.g. transportable applications) follow the requirements of Annex B.

This International Standard is not intended as a specification for pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications.

This International Standard does not include external piping which can be designed according to a recognized standard (e.g. ISO 15649).