Fluidsystem och delar: allmänt

Kommittébeteckning: SIS/TK 118 (Rörledningsprodukter och ventiler)
Källa: CEN
Svarsdatum: den 31 okt 2020
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This International Standard specifies a test method for the determination of the opening and closing torque of thermoplastics valves.

This International Standard applies to all types of thermoplastics valves intended to be used for the transport of fluids according to ISO 16135, ISO 16136, ISO 16138, ISO 16139, ISO 21787.

It does not specify the relationship between the torque and its possible increase after valve prolonged use at specific working condition or materials wear/chemical aggression.

NOTE Concerning the chemical aggression of the materials, a collection of data is reported in ISO/TR 10358[1], concerning the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure, information are given in ISO 8659[2].

Ämnesområden: Tryckkärl
Kommittébeteckning: SIS/TK 296 (Gasflaskor)
Källa: ISO
Svarsdatum: den 2 nov 2020
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This document specifies the minimum requirements for the material, design, construction and workmanship, manufacturing processes, examinations, and tests at manufacture for refillable seamless stainless steel gas cylinders

— with water capacities up to and including 150 l

— for compressed, liquefied, and dissolved gases

— with a maximum actual tensile strength, Rma, of less than 1 100 MPa.

NOTE If so desired, cylinders of water capacity between 150 l and 450 l can be manufactured to be in full compliance with this document.

Kommittébeteckning: SIS/TK 118 (Rörledningsprodukter och ventiler)
Källa: CEN
Svarsdatum: den 11 nov 2020
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This document specifies the "face-to-face" (FTF) and "centre-to-face" (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.

This document covers valves with the following PN, Class and DN values:

— PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;

— Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500;

— DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.

For valves in other shell materials than metal the same FTF and CTF dimensions can be used.

For relationship between DN and NPS, see Annex B.

Ämnesområden: Tryckkärl; Gasflaskor
Kommittébeteckning: SIS/TK 296 (Gasflaskor)
Källa: CEN
Svarsdatum: den 12 nov 2020
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This document specifies minimum requirements for the materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite gas cylinders for compressed, liquefied and dissolved gases.

NOTE 1 For the purposes of this document, the word "cylinder" includes tubes (seamless transportable pressure receptacles of a water capacity exceeding 150 l and of not more than 3 000 litres).

This document is applicable to cylinders that comprise a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by a wound composite consisting of fibres of glass, carbon or aramid (or a mixture thereof) embedded in a matrix.

This document is also applicable to composite cylinders without liners.

This document is not applicable to gas cylinders which are partially covered with fibres and commonly called "hoop wrapped" cylinders. For hoop wrapped composite cylinders, see EN 12257.

NOTE 2 This document does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, they are considered separately.

This document is primarily for compressed, liquefied and dissolved gases other than LPG.

NOTE 3 For dedicated LPG cylinders, see EN 14427.

Ämnesområden: Plaströr; Rördelar av plast
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: ISO
Svarsdatum: den 20 nov 2020
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This document specifies a method for determining the chemical resistance properties of glassreinforced thermosetting plastics (GRP) pipes and fittings in a deflected condition for nominal sizes DN 100 and larger.
In conjunction with ISO 10928, this document provides a method for evaluating the effect of a chemical environment on the interior of a pipe or fitting after a specified period of time. Test conditions and requirements are specified in the referring International Standard. ISO 23856 references this document.
NOTE It has been found that the effect of chemical environments can be accelerated by strain induced from
deflection; hence, it is frequently referred to as strain corrosion.

Ämnesområden: Plaströr
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: ISO
Svarsdatum: den 20 nov 2020
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This document specifies a method for determining the apparent axial long-term modulus of pipes subject to beam bending deflection between vertically supported end-couplers, which allow rotation of the pipe relative to the couplers.
The pipe is loaded by filling with water (without pressure) and vertical deflection measured both at the centre of the beam and at the end supports.
In conjunction with ISO 10928, this document expresses the results of the test as an apparent axial long-term modulus for use in the calculation of mid span beam deflection and end rotation of GRP pipes in accordance with ISO/TS 10986.
Test conditions and requirements are specified in the referring standard.
For practical reasons the test method is not suited for diameters greater than DN 600.

Ämnesområden: Gasflaskor; Bränslesystem
Kommittébeteckning: SIS/TK 296 (Gasflaskor)
Källa: CEN
Svarsdatum: den 24 nov 2020
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This International Standard specifies minimum requirements for light-weight refillable gas cylinders intended only for the on-board storage of high pressure compressed natural gas as a fuel for automotive vehicles to which the cylinders are to be fixed. The service conditions do not cover external loadings that can arise from vehicle collisions, etc.

This International Standard covers cylinders of any seamless steel, seamless aluminium alloy or non-metallic material construction, using any design or method of manufacture suitable for the specified service conditions. This International Standard does not cover cylinders of stainless steel. Although this standard uses 200 bar as a reference working pressure, other working pressures can be used.

Cylinders covered by this International Standard are designated Type 1, Type 2, Type 3 and Type 4.

Ämnesområden: Tryckkärl; Gasflaskor
Kommittébeteckning: SIS/TK 296 (Gasflaskor)
Källa: CEN
Svarsdatum: den 11 dec 2020
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This document

— specifies minimum requirements for materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite cylinders with a water capacity from 0,5 litre up to and including 150 litres for liquefied petroleum gases (LPG) exposed to ambient temperatures, with a test pressure of at least 30 bar;

— is only applicable to cylinders which are fitted with a pressure relief valve (see 4.1.3);

— is applicable to cylinders with a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by fibres of glass, carbon or aramid (or a mixture thereof);

— is also applicable to composite cylinders without liners.

Cylinders manufactured to this document are suitable for temperatures down to −40 °C.

This document does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, the choice of material and sleeve performance should be considered separately.

Kommittébeteckning: SIS/TK 298 (Konstruktion, tillverkning och kontroll av tryckbärande anordningar)
Källa: CEN
Svarsdatum: den 11 dec 2020
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This document specifies requirements for the design, manufacture and testing of composite piping for use with LPG in liquid phase and vapour pressure phase.

This document is applicable to LPG composite piping having a maximum allowable pressure of less than or equal to 25 bar.

NOTE For installation of composite pipework systems see EN 16125.

This document applies to pipes where the first layer of the pipework containment in contact with the LPG is of thermoplastic material which may include some degree of reinforcement.

It does not apply to fibre reinforced thermosets, commonly referred to as glass fibre reinforced plastic (GRP), nor rigid metals or corrugated metal pipework or hoses to EN ISO 10380.