Strojírenství

Oblast zaměření: Nádoby na plyny
Komise : CEN/TC 23 (Transportable gas cylinders)
Původce: CEN
K připomínkám do: 23.07.2019
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This document provides requirements for the selection of safe combinations of metallic cylinder and valve materials and cylinder gas content.

The compatibility data given is related to single gases and to gas mixtures.

Seamless metallic, welded metallic and composite gas cylinders and their valves, used to contain compressed, liquefied and dissolved gases, are considered.

NOTE          In this document the term “cylinder” refers to transportable pressure receptacles, which also include tubes and pressure drums.

Aspects such as the quality of delivered gas product are not considered.

Oblast zaměření: Stroje pro zpracování kovů
Komise : CEN/TC 202 (Foundry machinery)
Původce: CEN
K připomínkám do: 29.07.2019
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This document applies to the following equipment:

a)   Machinery constructed to condition and/or reclaim foundry sands for mold and core making (including related moldablegranular materials);

b)   Molding machinery;

c)   Coremaking machinery;

d)   Knock-out equipment;

e)   Other directly associated equipment.

This document does not apply to

—  ladles and pouring equipment

NOTE   This equipment is covered within EEC by EN 1247.

—  wax- and lost foam pattern production and wax removal equipment;

—  additive manufacturing equipment;

—  dust and/or gaseous emissions reduction equipment;

—  crane installations;

—  winches;

—  continuous conveyors or handling systems which could be an integral part of the equipment covered by the scope.

This document deals with foreseeable significant hazards, hazardous situations and events relevant to molding and coremaking machinery and associated equipment when used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. It provides the requirements to be met by the manufacturer to ensure the safety of persons and property during the life-cycle phases according ISO 12100:2010; 5.4, as well as in the event of foreseeable failures or malfunctions that can occur in the equipment.

The foreseeable significant hazards are listed in Clause 5 and include:

—  Mechanical hazards, movement of machinery and workpieces, ejection of material, of liquids and gases, inadequacy of the mechanical strength;

—  Explosion, fire, exothermic reactions;

—  Contact with hot parts, gases and flames;

—  Noise and vibration;

—  Thermal heat radiation and conduction;

—  Harmful by-products, poisoning, pollution of operators' breathing air.

Oblast zaměření: Nezařazeno
Komise : CEN/TC 352 (Nanotechnologies)
Původce: CEN
K připomínkám do: 6.08.2019
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This International Standard (IS) specifies fundamental characteristics to be measured of an engineered nanoparticles sample to determine the size, the chemical composition and the specific surface area of nanoparticles in powder form.  This IS is applied to both particles that have a covering material on the surface of a core material and that do not have it. The IS also specifies measurement methods for determining each of these characteristics.

Excluded in this IS are characteristics that pertain to industrial applications of nanoparticles in powder form and detailed measurement protocols as well as characteristics related to health, safety, and environmental issues.

Oblast zaměření: Zařízení pro naftový průmysl
Komise : CEN/TC 12 (Materials, equipment and offshore structures for petroleum and natural gas industries)
Původce: CEN
K připomínkám do: 6.08.2019
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This document specifies detailed manufacturing requirements for circular steel and nickel alloy compact flanged connections and associated seal rings, for designated pressures and temperatures in class designations CL 150 (PN 20) to CL 1500 (PN 260) for nominal sizes from DN 15 (NPS ½) to DN 1200 (NPS 48), and for CL 2500 (PN 420) for nominal sizes from DN 15 (NPS ½) to DN 600 (NPS 24).

NOTE           NPS is in accordance with ASME B36.10M and ASME B36.19M.

This document is applicable to welding neck flanges, blind flanges, paddle spacers and spacer blinds (paddle blanks), valve/equipment integral flanges, orifice spacers, reducing threaded flanges and rigid interfaces for use in process piping for the petroleum, petrochemical and natural gas industries.

This document is applicable within a temperature range from -196 °C to +250 °C.

This document is not applicable for external pressure.

Oblast zaměření: Nádoby na plyny
Komise : CEN/TC 286 (Liquefied petroleum gas equipment and accessories)
Původce: CEN
K připomínkám do: 3.09.2019
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This document specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders of water capacity of 0,5 l up to and including 150 l.

These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [4] and EN ISO 15995 [5]) or a separate device.

This document specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders of water capacity of 0,5 l up to and including 150 l.

These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [4] and EN ISO 15995 [5]) or a separate device.