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Uued standardid

ISO 12759-4:2019
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Fans -- Efficiency classification for fans -- Part 4: Driven fans at maximum operating speed
This document establishes a system for the classification of fan efficiency for all fan types driven by motors of nominal rating 0,125 kW and above. It applies to driven fans only, but not to the system (finished original equipment manufacturer's product, for example box fans and roof fans or ventilation system) in which they might be installed. This document describes a number of different procedures to classify the efficiency of a fan or to apply a minimum efficiency limit (MEL). Those procedures are described in: - ISO 12759-3; - this document (ISO 12759-4); - ISO 12759-5; - ISO 12759-6. There is no method described to compare these classifications and MEL's.
Asendab ISO 12759:2010; ISO 12759:2010/Amd 1:2013

Asendatud või tühistatud standardid


Kavandite arvamusküsitlus

EN 13445-3:2014/prA16
Tähtaeg 15.01.2020
Leekkuumutuseta surveanumad. Osa 3: Kavandamine
Standardi EN 13445-3:2014 muudatus
Vessels on brackets- Revision of clause 16

Keel: Inglise

prEN 593
Identne prEN 593
Tähtaeg 15.01.2020
Industrial valves - Metallic butterfly valves
This European Standard specifies minimum general requirements for butterfly valves having metallic bodies for use with all type of pipe end connections (e.g. wafer, lug, flange, butt welding) and used for isolating, regulating or control applications. The PN and Class ranges are: - PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; - Class 150; Class 300; Class 600; Class 900. The size range is: - 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 1 050; DN 1 100; DN 1 200; DN 1 400; DN 1 500; DN 1 600; DN 1 800; DN 2 000; DN 2 200; DN 2 400; DN 2 600; DN 2 800; DN 3 000; DN 3 200; DN 3 400; DN 3 600; DN 3 800; DN 4 000. DN 750 and DN 1 050 are used only for Class 150 and Class 300. Intermediate DNs are allowed upon agreement between manufacturer and customer. For valves subject to European legislation on pressure equipment, EN 16668 applies together with this European Standard. For industrial process control valves, EN 1349 and EN 60534 2 1 apply together with this European Standard. For water supply application, EN 1074 1 and EN 1074 2 apply together with this European Standard. NOTE 1 Butterfly valves for water supply application do not comply with Annex ZA and are not CE marked because they are excluded from the pressure equipment European legislation. NOTE 2 The range of DN, applicable to each PN, for wafer and wafer lug valve types is as given in the appropriate part of EN 1092 for Type 11 flanges for the applicable material. The range of DN, applicable to each PN, for flanged valve types is as given in the appropriate part of EN 1092 for Type 21 flanges for the applicable material. The correspondence between DN and NPS is given for information in Annex D.
Keel: Inglise

prEN 286-4
Identne prEN 286-4
Tähtaeg 15.01.2020
Simple unfired pressure vessels designed to contain air or nitrogen - Part 4: Aluminium alloy pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock
1.1 This document is applicable to simple unfired aluminium alloy pressure vessels, referred to as "vessel" in this document, designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock (see 1.6). 1.2 The vessels to this document are: a) made from a single shell; b) made from aluminium alloy; c) fabricated by welding; d) used at a maximum working pressure of 10 bar; e) the product of the maximum working pressure (in bar) and the volume (in litre): 50 bar litres < PV ≤ 10 000 bar litres; f) made of a cylindrical part of circular cross section called the shell with two outwardly dished torispherical ends, that is two dished ends with the same axis of rotation. This document therefore does not apply to vessels with one or two flat ends or those made up of several compartments; g) calculated with a design pressure P (See; h) designed for a working temperature of between −50 °C and +100 °C [+65 °C for certain grades of aluminium alloy (see 4.1.1)]; i) fastened to the vehicles by straps. 1.3 In normal service, a momentary overpressure of 1 bar of the maximum working pressure is permitted (10 % of PS). 1.4 This document applies to the vessel proper, from the inlet connection to the outlet connection and to all other connections and fittings belonging to the vessel. 1.5 This document gives the requirements to be met for the calculation, design, fabrication, inspection during fabrication and certification of the vessel, and fittings for assembly to the vehicle. These requirements cannot be written in sufficient detail to ensure good workmanship or proper construction. Each manufacturer is therefore responsible for taking every necessary step to make sure that the quality of workmanship and construction is such as to ensure compliance with good engineering practice. This document gives: a) in Annex B, recommendations for assembly to the vehicles; b) in Annex C, recommendations for the service surveillance of vessels. 1.6 The requirements of this document apply to vessels designed to be fitted to rail vehicles used on the main national networks, urban networks, underground railways, trams, private networks (regional railways, company railways, etc.).
Keel: Inglise

EN 13445-3:2014/prA19
Tähtaeg 15.01.2020
Unfired pressure vessels - Part 3: Design
Revision of annex C
Keel: Inglise

EN 13445-2:2014/prA8
Tähtaeg 15.01.2020
Leekkuumutuseta surveanumad. Osa 2: Materjalid
Revision of 4.1.7 and annex A
Keel: Inglise