Strojírenství

Oblast zaměření: Nezařazeno
Komise : CEN/TC 438 (Additive Manufacturing)
Původce: CEN
K připomínkám do: 20.11.2019
Zobraz více Zobraz méně
 

This document provides specifications and illustrations for the positioning and orientation of parts with regards with coordinate systems and testing methodologies for additive manufacturing (AM) technologies in an effort to standardize the method of representation used by AM users, producers, researchers, educators, press/media, and others, particularly when reporting results from testing of parts made on AM systems. Specifications included cover coordinate systems and the location and orientation of parts. It is intended, where possible, to be compliant with the principles of ISO 841 and to clarify the specific adaptation of those principles for additive manufacturing.

Oblast zaměření: Chlazení
Komise : CEN/TC 44 (Household refrigerating appliances and commercial refrigerated cabinets)
Původce: CEN
K připomínkám do: 26.11.2019
Zobraz více Zobraz méně
 

This document defines classification criteria, test conditions and test procedures for performance testing of packaged refrigerating units for stationary cold room applications. This includes ductless units for cold storage applications at medium temperatures (MT) and low temperatures (LT) in either compact or split designs, fitted with electrically driven compressors, which work according to the vapour compression cycle.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 26.11.2019
Zobraz více Zobraz méně
 

This document specifies the requirements for safety systems which protect a vessel, a system of vessels, piping, accessories or assemblies from exceeding operating conditions.

It is also applicable to safety related indicators and alarms, signals and warning devices when used in safety systems.

Equipment connected together by piping of adequate capacity, free from potential blockages and which does not contain any valve that can isolate any part from the safety system, can be considered as a single pressure system when considering the requirements for overpressure protection.

Safety systems include the interconnections between the equipment to be protected and any discharge location. This location can either be an outlet to atmosphere or the entry into a closed disposal system.

NOTE          The scope of this document and its relationship to the safety accessories and other protective devices described in the Pressure Equipment Directive are shown in Annex E.

Oblast zaměření: Armatury
Komise : CEN/TC 69 (Industrial valves)
Původce: CEN
K připomínkám do: 26.11.2019
Zobraz více Zobraz méně
 

Amendment

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: 15.12.2019
Zobraz více Zobraz méně
 

This document specifies requirements for, and gives guidance on, the application of life cycle costing for the development activities and operations associated with drilling, exploitation, processing and transport of petroleum, petrochemical and natural gas resources. This document covers facilities and associated activities within different business categories (upstream, midstream, downstream and petrochemical).

The life cycle costing process as described in this document is applicable when making decisions between competing options that are differentiated by cost and/or economic value implications. This document is not concerned with decision making related to the economic performance of individual options or options differentiated by factors other than cost or economic value.

Guidance is provided on the management methodology and application of life cycle costing in support of decision making across life cycle phases. The extent of planning and management depends on the magnitude of the costs involved, the potential value that can be created and the life cycle phase. It also provides the means of identifying cost drivers and provides a cost-control framework for these cost drivers, allowing effective cost control and optimization over the entire life of an asset.  

Komise : CEN/TC 153 (Machinery intended for use with foodstuffs and feed)
Původce: CEN
K připomínkám do: 16.12.2019
Zobraz více Zobraz méně
 

This document specifies safety and hygiene requirements of clipping machines (hereafter referred to as machine) for closing of casings filled with foodstuffs (hereafter referred to as product) by using a clip, and which are intended to be used in butcheries, meat processing factories, main kitchens and other food processing factories.

Clipping machines are used to close tubes with a single clip (one side) or a double clip (end locking and start locking).

The machines are equipped with closing tools (punch/die), which create the closure by deforming the locking element (clip).

This document deals with all significant hazards, hazardous situations and hazardous events relevant to machinery when it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).

This document covers the following types of machines:

—    semi-automatic machine (see Figure 1 and Figure 2);

—    automatic machine (see Figure 3).

This document does not cover any machines whose closing procedure is only performed manually.

This document is not applicable to machinery manufactured before the date of publication of this document by CEN.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 16.12.2019
Zobraz více Zobraz méně
 

This document applies to the design and manufacture of welded, simple unfired pressure vessels manufactured in series, with a single or multiple compartment, here-in-after referred to as vessels.

It only applies to vessels that:

a)     include fabrication by welding, but some designs can entail the use of bolts;

b)    have a simple geometry enabling simple-to-use production procedures. This is achieved by either

1)    a cylindrical part of circular cross section closed by outwardly dished and/or flat ends which revolve around the same axis as the cylindrical part; or

2)    two outwardly dished ends revolving around the same axis.

1.2     It applies to vessels which are intended to contain air or nitrogen which are not intended to be fired and which operate within the following constraints:

a)     subjected to an internal gauge pressure greater than 0,5 bar;

b)    the parts and assemblies contributing to the strength of the vessel under pressure to be made either of non-alloy quality steel or of non-alloy aluminium or non-age hardening aluminium alloys;

NOTE          In this document, the use of “aluminium” covers non-alloy aluminium and aluminium alloys.

c)     the maximum working pressure is not greater than 30 bar. The product of the maximum working pressure and the capacity of the vessel (PS · V) is greater than 50 bar · l but does not exceed 10 000 bar · l. Below 50 bar · l use of this document is considered to fulfil the requirements of sound engineering practice;

d)    the minimum working temperature is not lower than −50 °C and maximum working temperature not higher than 300 °C for steel and 100 °C for aluminium or aluminium alloy vessels.

It does not apply to vessels specifically designed for nuclear use, to vessels specifically intended for installation in or the propulsion of ships and aircraft, or to fire extinguishers.

The document neither applies to transportation vessels nor to vessels which also contain substances other than air or nitrogen which could adversely affect their safety. For vessels to contain compressed air for braking systems of road vehicles and their trailers, see also EN 286‑2. For vessels to contain compressed air for braking systems of rail mounted vehicles, see also EN 286‑3 and EN 286‑4.

1.3     It applies to the vessel proper, from the inlet connection to the outlet connection and to all other connections required for valves and fittings.

1.4     For the purposes of calculations required to be made in accordance with this document, dimensions are in millimetre, pressures are in bar (except otherwise specified), stresses are in newton per square millimetre and temperatures are in degree Celsius.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 16.12.2019
Zobraz více Zobraz méně
 

            This document is applicable to simple unfired steel pressure vessels, referred to as “vessel” in this document, designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock (see Clause 13).

It defines three types of vessel A, B and C (see Table 1) corresponding to the current practice of European railway networks.

1.2     The vessels in this document are:

a)     made from a single shell;

b)    made from non-alloy steel;

c)     fabricated by welding;

d)    used at a maximum working pressure of 15 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 5.1.4.1.2);

h)    designed for a working temperature of between −40 °C and +100 °C;

i)      fastened to vehicles:

1)    by straps for types A and B vessels,

2)    by welded brackets for types B and C vessels.

1.3     In normal service, a momentary overpressure of 10 % of PS, the maximum working pressure PS, is permitted.

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 type A vessels;

c)     in Annex D, recommendations for the service surveillance of types B and C vessels.

The requirements of this document apply to vessels designed to be fitted to rail vehicles.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 16.12.2019
Zobraz více Zobraz méně
 

This document applies to the design and manufacture of simple unfired serially made pressure vessels, herein after referred to as vessels, designed for air breaking equipment and auxiliary systems for motor vehicles and their trailers, and which:

a)     include fabrication by welding;

b)    have a simple geometry enabling simple-to-use production procedures. This is achieved by either:

1)    a cylindrical shell of circular cross section closed by outwardly dished and/or flat ends having the same axis of revolution as the shell; or:

2)    two dished ends having the same axis of revolution;

c)     have branches not larger in diameter than 0,5 of the diameter of the cylinder to which they are welded.

1.2     It applies only to vessels intended to contain compressed air, and which operate within the following constraints:

a)     subjected to an internal pressure greater than 0,5 bar;

b)    the parts and assemblies contributing to the strength of the vessel under pressure to be made either of non-alloy quality steel or of non-alloy aluminium or non-age hardening aluminium alloys;

c)     maximum working pressure 30 bar, the product of that pressure and the capacity of the vessel (PS ∙ V) is greater than 50 bar litres and not exceeding 1 500 bar litres;

d)    capacity not exceeding 150 litres;

e)     minimum working temperature not lower than −50 °C and maximum working temperature not higher than 100 °C.

It does not apply to vessels specifically designed for nuclear use, to vessels specifically intended for installation in or the propulsion of ships and aircraft, or to fire extinguishers.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 23.12.2019
Zobraz více Zobraz méně
 

Amendment

Oblast zaměření: Armatury
Komise : CEN/TC 69 (Industrial valves)
Původce: CEN
K připomínkám do: 23.12.2019
Zobraz více Zobraz méně
 

This document 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.

This document applies to metallic butterfly valves used for all industrial applications. Additional requirements given in the relevant application standards may apply to butterfly valves used for more specific applications (e.g. for the water industry, the chemical and petrochemical process industry, the gas distribution industry).

NOTE 1       Industrial applications cover water applications.

For valves subject to European legislation on pressure equipment, EN 16668 applies together with this document.

For industrial process control valves, EN 1349 and EN 60534-2-1 apply together with this document.

For water supply application, EN 1074-1 and EN 1074-2 apply together with this document.

NOTE 2       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 3       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.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 30.12.2019
Zobraz více Zobraz méně
 

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 5.1.4.2);

h)    designed for a working temperature of between −50 °C and +100 °C [+65 °C for certain grades of aluminium alloy (see 4.1.2)];

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.).

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 30.12.2019
Zobraz více Zobraz méně
 

Amendment

Komise : CEN/TC 153 (Machinery intended for use with foodstuffs and feed)
Původce: CEN
K připomínkám do: 30.12.2019
Zobraz více Zobraz méně
 

This document deals with all significant hazards, hazardous situations and events relevant to derinding-, skinning- and membrane removal machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).

This document deals with the hazards which can arise during commissioning, operation, cleaning, use, maintenance and decommissioning of the machine.

The machines described in this standard are used for derinding-, skinning- and membrane removal of meat and fish by cutting at a straight blade and/or cutting with circular blades. Feeding could be done manually or automatically.

Using open derinding-, skinning- and membrane removal machines, the product is guided by hand towards the cutting device.

With automatic derinding-, skinning and membrane removal machines the product is transported by an infeed conveyor against the cutting device. Product with a weight > 25 kg has to be processed by an automatic machine.

Derinding-, skinning-, and membrane removal machines for domestic purposes, hand-guided machines and table-top machines are not covered by this standard.

This document only applies to machines which are manufactured after the date of issue of this document.

Oblast zaměření: Tlakové nádoby
Komise : CEN/TC 54 (Unfired pressure vessels)
Původce: CEN
K připomínkám do: 30.12.2019
Zobraz více Zobraz méně
 

Amendment