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  • BSI
    BS EN 14986:2017 Design of fans working in potentially explosive atmospheres
    Edition: 2017
    $526.05
    / user per year

Description of BS EN 14986:2017 2017

1.1 This European Standard specifies the constructional requirements for fans constructed to Group II G (of explosion groups IIA, IIB and hydrogen) categories 1, 2 and 3, and Group II D categories 2 and 3, intended for use in explosive atmospheres.

NOTE 1

Operation conditions for the different categories of fans used in this European Standard are defined in Clause 4.

NOTE 2

Technical requirements for category 1 D fans are not given in this document. Where explosive dust atmospheres are regularly conveyed, explosion protection measures as described in EN 1127‑1 are required if this specific us is needed.

1.2 This European Standard does not apply to group I fans (fans for mining), cooling fans or impellers on rotating electrical machines, cooling fans or impellers on internal combustion engines.

NOTE 1

Requirements for group I fans are given in EN 1710 .

NOTE 2

The requirements for electrical parts are covered by references to electrical equipment standards.

1.3 This European Standard specifies requirements for design, construction, testing and marking of complete fan units intended for use in potentially explosive atmospheres in air containing gas, vapour, mist and/or dusts. Such atmospheres may exist inside (the conveyed atmosphere (flammable or not)), outside, or inside and outside of the fan.

1.4 This European Standard is applicable to fans working in ambient atmospheres and with normal atmospheric conditions at the inlet, having

  • absolute pressures ranging from 0,8 bar to 1,1 bar,

  • and temperatures ranging from −20 °C to +60 °C,

  • and maximum volume fraction of 21 % oxygen content,

  • and an aerodynamic energy increase of less than 25 kJ/kg.

NOTE 1

25 kJ/kg is equivalent to 30 kPa at inlet density of 1,2 kg/m 3.

This European Standard may also be helpful for the design, construction, testing and marking of fans intended for use in atmospheres outside the validity range stated above or in cases where other material pairings need to be used. In this case, the ignition risk assessment, ignition protection provided, additional testing (if necessary), manufacturer's marking, technical documentation and instructions to the user, should clearly demonstrate and indicate the equipment's suitability for the conditions the fan may encounter.

This European Standard should not apply to integral fans as a part of Diesel engines, vehicles or electric motors.

NOTE 2

Where undated references are used in the body of the standard the latest edition applies.



Standard NumberBS EN 14986:2017
TitleDesign of fans working in potentially explosive atmospheres
StatusWithdrawn
Publication Date2017-01-31
Withdrawn Date2024-05-03
ReplacesBS EN 14986:2007
Replaced ByBS EN 14986:2024
Identical National Standard OfEN 14986:2017
DescriptorsVerification, Protected electrical equipment, Explosive atmospheres, Explosions, Safety measures, Fans, Equipment safety, Fire risks, Test methods, Risk assessment
ICS29.260.20 Electrical apparatus for explosive atmospheres, 23.120 Ventilators. Fans. Air-conditioners
CommitteeEXL/23
ISBN978 0 580 85162 9
PublisherBSI
Pages56

The following editions for this book are also available...

Format Year Publisher Type Title Annual Price
2020
BSI
Standards
 $736.46 Buy

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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