Strojírenství

Oblast zaměření: Spojovací součásti
Komise : CEN/TC 185 (Fasteners)
Původce: CEN
K připomínkám do: 28.05.2019
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This document specifies the mechanical and physical properties of heat-treated self-tapping screws made of steel, with thread ST2,2 to ST9,5 in accordance with ISO 1478, together with the related test methods.

Self-tapping screws are designed to form mating threads in materials into which they are driven, without deforming their own thread.

Oblast zaměření: Armatury
Komise : CEN/TC 69 (Industrial valves)
Původce: CEN
K připomínkám do: 5.06.2019
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This International Standard specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation.

NOTE          For what concern the chemical aggression of the materials, a classification table is reported in ISO TR 10358[1].

This International Standard includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that parameters may be different in particular product standards (see 5.1).

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 11.06.2019
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Amendment

Komise : CEN/TC 305 (Potentially explosive atmospheres. Explosion prevention and protection)
Původce: CEN
K připomínkám do: 18.06.2019
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This document specifies analysis and evaluation procedures for determining self-ignition temperatures (TSI) of combustible dusts or granular materials as a function of volume by hot storage experiments in ovens of constant temperature. The specified test method is applicable to any solid material for which the thermal explosion theory according to Annex A.2 holds (i.e. not limited to only oxidatively unstable materials).

The specified test is applicable to any dust or granular material that reacts primarily with oxygen from the air. For safety reasons, this test shall not be used with materials mixed with solid/liquid oxidant (e.g. gunpowder, thermites, wood impregnated with liquid oxygen) or materials that could undergo violent non-oxidative reactions (e.g. peroxides, explosives). On a case by case basis, some types of materials undergoing non-oxidative reactions (e.g. non-violent exothermic decomposition reactions) may be however tested provided that additional safety precautions are taken. Where any doubt exists about the existence of hazard due to the properties of the test material (e.g. toxic or explosive), expert advice should be sought.

This document is not applicable to the ignition of dust layers or bulk solids under aerated conditions (e.g. as in fluid bed dryer).

Oblast zaměření: Kladky a pásy
Komise : CEN/TC 188 (Conveyor belts)
Původce: CEN
K připomínkám do: 19.06.2019
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This International Standard specifies test methods for determining the electrical resistances of light conveyor belts according to ISO 21183‑1. The resistances are surface resistance, volume resistance perpendicular to the belt plane, and longitudinal and transverse volume resistance parallel to the belt plane. This International Standard also specifies two test methods for determining the surface resistivity and the volume rezistivity.

Oblast zaměření: Chlazení
Komise : CEN/TC 44 (Household refrigerating appliances and commercial refrigerated cabinets)
Původce: CEN
K připomínkám do: 19.06.2019
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The scope of this Standard is to define the classification for horizontal closed ice-cream freezer with access of the product from the top via transparent or solid lid(s) and to specify their requirements and test methods.

These appliances are different to supermarket segment freezers, as they work with static air cooling, with a skin evaporator (no evaporator fan) and are used specifically for the storage and display of pre-packed ice-cream. This standard is only applicable to integral type refrigeration systems. This standard is not applicable to remote and secondary system type cabinets. Ice-cream freezers within this standard should have a net volume ≤ 600 l and only for transparent lid ice cream freezers they should have a net volume/TDA ≥ 0,35 m.

Oblast zaměření: Stroje pro zpracování kovů
Komise : CEN/TC 322 (Equipments for making and shaping of metals. Safety requirements)
Původce: CEN
K připomínkám do: 25.06.2019
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This document applies for new steel converter and its associated equipment (hereinafter referred to as converter plant) used in the process of carbon or stainless steel making as defined in 3.1 and illustrated in Annex B.

This document deals with significant hazards, hazardous situations and events relevant to the converter plant. It covers the intended use and foreseeable misuse.

This document specifies the safety requirements to be met during design, transport, setting up/installation, assembly, commissioning, operation, maintenance (as described in Clause 5) and decommissioning/disassembly of the equipment.

NOTE 1       Assembly does not include erection because national regulations, e.g., national civil engineering laws and regulations or occupational health and safety regulations have to be considered.

This document applies to:

Steel converter and its associated equipment (see Annex B, Figure B.1) for the oxygen steelmaking process

—    from charging hot metal/liquid steel and scrap;

—    via oxygen refining and stirring;

—    temperature measurement and sampling equipment;

—    up to tapping including slag retaining device;

—    cooling systems;

—    maintenance devices (e.g., relining device, tap hole repair device, device for cleaning the converter mouth);

—    process related interfaces/interactions (e.g., according to design, controls) to

—    process media,

—    primary and secondary gas cleaning plant,

—    material feeding systems and ladle alloying systems,

—    transfer cars for steel ladle and slag pot, and

—    charging/tapping equipment, e.g., crane, scrap chute, ladles and slag pots.

This document does not cover safety requirements for:

—    usage of process media other than oxygen, nitrogen, argon and compressed air;

—    primary and secondary gas cleaning plants;

—    measuring devices with radioactive sources;

—    material feeding systems and ladle alloying systems;

—    transfer cars for steel ladle and slag pot;

—    charging/tapping and de-slagging equipment, e.g., crane, scrap chutes, ladles and slag pots;

—    auxiliary winches and hoists.

NOTE 2       For variations of converter process where other gases and process media, e.g., hydrocarbons, fuels, steam, etc. are used, additional safety measures have to be considered which are not covered in this safety standard.

NOTE 3       In case of revamping, this document can be used as a guideline for the specific parts to be revamped.

Komise : CEN/TC 153 (Machinery intended for use with foodstuffs and feed)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (fuxova@unmz.cz)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 25.06.2019
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Amendment

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 1.07.2019
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Amendment

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 1.07.2019
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This Part 12 of EN 13445 series specifies requirements for unfired pressure vessels and their parts made of copper and copper alloys (see 5.2) in addition to the general requirements for unfired pressure vessels in EN 13445‑1:2014 to EN 13445‑5:2014.

NOTE 1       Cast materials are not included in this version. Details regarding cast materials will be subject to an amendment to or a revision of EN 13445 series.

NOTE 2       Soldered connections are presently not considered.

Oblast zaměření: Nezařazeno
Komise : CEN/TC 438 (Additive Manufacturing)
Původce: CEN
K připomínkám do: 2.07.2019
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This document specifies requirements for the qualification of operators of metal powder bed fusion machines and equipment for additive manufacturing.

This document is applicable if the operator qualification testing is required by contract or by application standards.

Komise : CEN/TC 151 (Construction equipment and building material machines. Safety)
Původce: CEN
K připomínkám do: 2.07.2019
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This part of ISO 19014 specifies general principles for software development and signal transmission requirements of safety-related parts of machine-control systems (MCS) in earth-moving machinery and its equipment, as defined in ISO 6165.

Cyber security is out of the scope of this document.

Oblast zaměření: Nezařazeno
Komise : CEN/TC 438 (Additive Manufacturing)
Původce: CEN
K připomínkám do: 2.07.2019
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This document specifies requirements and test methods for the qualification and re-qualification of laser beam machines for metal powder bed fusion additive manufacturing for aerospace applications.

This standard can also be used to verify machine features during periodic inspections or following maintenance and repair measures.