Energi- och värmeöverföring

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: CEN
Svarsdatum: den 4 jul 2022
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This document applies for systems for biogas production by anaerobic digestion, biogas conditioning,
biogas upgrading and biogas utilization from a safety, environmental, performance and functionality
perspective, during the design, manufacturing, installation, construction, testing, commissioning,
acceptance, operation, regular inspection and maintenance phases.
The following topics are excluded from this document:
— boilers, burners, furnaces and lighting in case these are not specifically applied for locally
produced biogas;
— gas fuelled engines for vehicles and ships;
— the public gas grid;
— specifications to determine biomethane quality;
— transportation of compressed or liquefied biogas;
— transportation of biomass or digestate;
— assessment and determination whether biomass is sourced sustainably or not.
An informative explanation of the scope is included in Annex A.

Ämnesområden: Värmepumpar; Kylteknik
Kommittébeteckning: SIS/TK 243 (Kyl- och värmepumpsanläggningar - Säkerhet)
Källa: CEN
Svarsdatum: den 2 aug 2022
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ISO 14903:2017 provides the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in relevant parts of ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this document.
The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg.
ISO 14903:2017 is intended to characterize their tightness stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of necessary information to be provided by the supplier of a component to the person in charge of carrying out this procedure.
It specifies the level of tightness of the component, as a whole, and its assembly as specified by its manufacturer.
It applies to the hermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are.
ISO 14903:2017 specifies additional requirements for mechanical joints that can be recognized as hermetically sealed joints.

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This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded single pipe assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, polyurethane foam thermal insulation and a casing of polyethylene.
The pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 29 aug 2022
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This document is the first of a suite of seven (7) documents which outlines the general principles to manage the various type of radioactive waste, and provides guidance for the practical implementation of those principles.
The purpose of this document is to address the following:
1) Principles, objectives and practical approaches for radioactive waste management;
2) Outline of the structure of suite from ISO 24389 part-1 through part-7.

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 29 aug 2022
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