iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
CEN

EN 14491:2006/AC:2008

(Corrigendum)

Dust explosion venting protective systems

Dust explosion venting protective systems

TC/AFNOR/DIN - Various editorial improvements including the corrections of 1st Corrigendum EN 14491:2006/AC:2008, WI 00305C03

Schutzsysteme zur Druckentlastung von Staubexplosionen

Systèmes de protection par évent contre les explosions de poussières

Zaščitni sistemi za razbremenitev tlaka eksplozije prahu

General Information

Status
Withdrawn
Publication Date
18-Nov-2008
Withdrawal Date
07-Aug-2012
ICS
13.230 - Explosion protection
Technical Committee
CEN/TC 305 - Potentially explosive atmospheres - Explosion prevention and protection
Drafting Committee
CEN/TC 305/WG 3 - Devices and systems for explosion prevention and protection (provisional title)
Current Stage
9960 - Withdrawal effective - Withdrawal
Due Date
08-Aug-2012
Completion Date
08-Aug-2012
Mandate
M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
Ref Project
SIST EN 14491:2006/AC:2009 - Dust explosion venting protective systems

Relations

Replaced By
EN 14491:2012 - Dust explosion venting protective systems
Effective Date
15-Aug-2012

Buy Standard

EN 14491:2006/AC:2009EN 14491:2006/AC:2009
PreviousNext
Corrigendum
EN 14491:2006/AC:2009
English language
4 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schutzsysteme zur Druckentlastung von StaubexplosionenSystèmes de protection par évent contre les explosions de poussièresDust explosion venting protective systems13.230Varstvo pred eksplozijoExplosion protectionICS:Ta slovenski standard je istoveten z:EN 14491:2006/AC:2008SIST EN 14491:2006/AC:2009en,fr,de01-marec-2009SIST EN 14491:2006/AC:2009SLOVENSKI
STANDARD



SIST EN 14491:2006/AC:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14491:2006/ACNovember 2008Novembre 2008November 2008ICS 13.230English versionVersion FrançaiseDeutsche FassungDust explosion venting protective systemsSystèmes de protection par évent contreles explosions de poussièresSchutzsysteme zur Druckentlastung vonStaubexplosionenThis corrigendum becomes effective on 19 November 2008 for incorporation in the three officiallanguage versions of the EN.Ce corrigendum prendra effet le 19 novembre 2008 pour incorporation dans les trois versionslinguistiques officielles de la EN.Die Berichtigung tritt am 19.November 2008 zur Einarbeitung in die drei offiziellen Sprachfassungender EN in Kraft.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Tous droits d'exploitation sous quelque forme et de quelque manière que ce soit réservés dans le monde entier auxmembres nationaux du CEN.Alle Rechte der Verwertung, gleich in we
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CEN
CEN/TR 15281:2022(Main)
Potentially explosive atmospheres - Explosion prevention and protection - Guidance on inerting for the prevention of explosions
SIST-TP CEN/TR 15281:2023

Inerting is a preventive measure to avoid explosions or fire to happen. By feeding inert gas into a system, which is to be protected against an explosion or a fire, the oxygen content is reduced below a certain limit or completely replaced by an inert gas, depending on the inert gas, on the fuel and the process until no explosion or fire can occur or develop.
Inerting can be used to prevent fire and explosion by reducing the O2 content.
NOTE Inerting can also be used to prevent and to extinguish smouldering nests and glowing fires which are a primary source of ignition in pulverized fuel storage and handling facilities, substituting air by sufficient inert gas inside the equipment.
The following cases are not covered by the guideline:
- admixture of an inert solid powder to a combustible dust;
- inerting of flammable atmospheres by wire mesh flame traps in open spaces of vessels and tanks;
- firefighting;
- avoiding an explosive atmosphere by exceeding the upper explosion limit of a flammable substance;
- anything related to product quality (oxidation or ingress of humidity) or product losses;
- any explosive atmosphere caused by other oxidizing agents than oxygen.
Other technologies might be used in combination with inerting such as floating screens made of independent collaborative floaters consisting of an array of small floaters non-mechanically linked but overlapping each other in order to form a continuous layer covering the liquid surface.
Product oxidation or evaporation reduction is directly proportional to the surface area covering ratio and quality of the inerting.

  • Technical report
    63 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
CEN/TR 17838:2022(Main)
Use of plugs of bulk material in screw conveyors and product receivers for explosion isolation
SIST-TP CEN/TR 17838:2022

This document describes the recommendations for the design and use of screw conveyors and product receivers which can in addition be used as a means for explosion isolation to prevent a dust explosion transmission into connected plant items by using the bulk material which is inside.
The recommendations given in this document are procedural measures since the properties of the bulk material affect the efficacy of this measure essentially (e.g. flow and explosion characteristics). Product receivers and screw conveyors cannot be considered as protective systems under the scope of the ATEX Directive.
As far as screw conveyors are concerned, the scope of this document is limited to rigid, tubular, singular screw conveyors which consist of a spiral blade coiled around a shaft held by external bearings (the rotating part of the conveyor is sometimes called “auger”).
NOTE   Additional internal bearings can be necessary if the tubular screw conveyor exceeds a certain length.
This document includes limits of application where a plug of bulk material in a screw conveyor is not possible/sufficient to achieve explosion isolation and also application ranges where a plug of bulk material is not necessary to achieve explosion isolation.
This document does not address the mandatory risk analysis and ignition hazard assessment, which are performed for the application of the screw conveyors and product receivers. The mandatory risk assessment includes start-up and shut-down conditions, when potentially no plug of material is present to prevent explosion propagation. To mitigate this residual risk, it is possible to use as an extra measure, e.g. a traditional gate valve which prevents flame transmission and is able to withstand the expected maximum explosion pressure.

  • Technical report
    19 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 17624:2022(Main)
Determination of explosion limits of gases and vapours at elevated pressures, elevated temperatures or with oxidizers other than air
SIST EN 17624:2022

This document specifies a test method to determine the explosion limits of gases, vapours and their mixtures, mixed with a gaseous oxidizer or an oxidizer/inert gas mixture at pressures from 0,10 MPa to 10 MPa and for temperatures up to 400 °C.

  • Standard
    19 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    19 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14373:2021(Main)
Explosion suppression systems
SIST EN 14373:2022

This document describes the basic requirements for the design and application of explosion suppression systems. This document also specifies test methods for evaluating the effectiveness and the scaling up of explosion suppression systems against defined explosions. This document covers:
-   general requirements for explosion suppression system parts;
-   evaluating the effectiveness of an explosion suppression system;
-   evaluating the scale up of an explosion suppression system to larger than tested volumes;
-   development and evaluation of design tools for explosion suppression systems;
-   installation, operation and maintenance instructions for an explosion suppression system.
This document is applicable only to explosion suppression systems intended for the protection of closed, or essentially closed, enclosures in which an explosion could result as a consequence of ignition of an explosible mixture, e.g. dust-air, gas(vapour)-air, dust-gas(vapour)-air and mist-air.
This document is not applicable for explosions of materials listed below, or for mixtures containing some of those materials:
-   unstable materials that are liable to dissociate;
-   explosive materials;
-   pyrotechnic materials;
-   pyrophoric materials.

  • Standard
    46 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    41 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 15967:2022(Main)
Determination of maximum explosion pressure and the maximum rate of pressure rise of gases and vapours
SIST EN 15967:2022

This document specifies a test method that is designed to measure the explosion pressure and the maximum explosion pressure, the rate of explosion pressure rise and the maximum rate of explosion pressure rise of a quiescent flammable gas/air/inert mixture in closed volume at ambient temperature and pressure. In this document, the term “gas” includes vapours but not mists. Detonation and decomposition phenomena are not considered in this document.
The pressures and rates of pressure rise measured by the procedures specified in this document are not applicable to flameproof enclosures, i.e. enclosures intended to withstand an internal explosion and not to transmit it to an external explosive atmosphere, or any other closed volume where the internal geometry can result in pressure piling. Even in an enclosure of relatively simple geometry the disposition of the internal components can lead to rates of pressure rise significantly higher than those measured using this document. This document does not apply to the design and testing of flameproof enclosures in conformity with EN ISO 80079-37 (for non-electrical equipment) and EN 60079-1 (for electrical equipment).

  • Standard
    41 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    40 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 15188:2020(Main)
Determination of the spontaneous ignition behaviour of dust accumulations
SIST EN 15188:2021

This European Standard 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 linear correlation of lg (V/A) versus the reciprocal self-ignition temperature 1/TSI (with TSI in K) holds (i.e. not limited to only oxidatively unstable materials).
This European Standard is not applicable to the ignition of dust layers or bulk solids under aerated conditions (e.g. as in fluid bed dryer).
This European Standard shall not be applied to dusts like recognised explosives that do not require atmospheric oxygen for combustion, nor to pyrophoric materials.
NOTE   Because of regulatory and safety reasons "recognised explosives" are not in the scope of this European Standard. In spite of that, substances which undergo thermal decomposition reactions and which are not "recognised explosives" but behave very similarly to self-ignition processes when they decompose are in the scope. If there are any doubts as to whether the dust is an explosive or not, experts should be consulted.

  • Standard
    35 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    34 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 1127-1:2019(Main)
Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
SIST EN 1127-1:2019

This document specifies methods for the identification and assessment of hazardous situations leading to explosion and the design and construction measures appropriate for the required safety. This is achieved by:
-   risk assessment;
-   risk reduction.
The safety of equipment, protective systems and components can be achieved by eliminating hazards and/or limiting the risk, i.e. by:
a)   appropriate design (without using safeguarding);
b)   safeguarding;
c)   information for use;
d)   any other preventive measures.
Measures in accordance with a) (prevention) and b) (protection) against explosions are dealt with in Clause 6, measures according to c) against explosions are dealt with in Clause 7. Measures in accordance with d) are not specified in this document. They are dealt with in EN ISO 12100:2010, Clause 6.
The preventive and protective measures described in this document will not provide the required level of safety unless the equipment, protective systems and components are operated within their intended use and are installed and maintained according to the relevant codes of practice or requirements.
This document specifies general design and construction methods to help designers and manufacturers in achieving explosion safety in the design of equipment, protective systems and components.
This document is applicable to any equipment, protective systems and components intended to be used in potentially explosive atmospheres, under atmospheric conditions. These atmospheres can arise from flammable/combustible substances processed, used or released by the equipment, protective systems and components or from materials in the vicinity of the equipment, protective systems and components and/or from the materials of construction of the equipment, protective systems and components.
This document is applicable to equipment, protective systems and components at all stages of its use.
This document is only applicable to equipment group II which is intended for use in other places than underground parts of mines and those parts of surface installations of such mines endangered by firedamp and/or combustible dust.
This document is not applicable to:
1)   medical devices intended for use in a medical environment;
2)   equipment, protective systems and components where the explosion hazard results exclusively from the presence of explosive substances or unstable chemical substances;
3)   equipment, protective systems and components where the explosion can occur by reaction of substances with other oxidizers than atmospheric oxygen or by other hazardous reactions or by other than atmospheric conditions;
4)   equipment intended for use in domestic and non-commercial environments where potentially explosive atmospheres may only rarely be created, solely as a result of the accidental leakage of fuel gas;
5)   personal protective equipment covered by Regulation (EU) 2016/425;
6)   seagoing vessels and mobile offshore units together with equipment on board such vessels or units;
7)   means of transport, i.e. vehicles and their trailers intended solely for transporting passengers by air or by road, rail or water networks, as well as means of transport insofar as such means are designed for transporting goods by air, by public road or rail networks or by water; vehicles intended for use in a potentially explosive atmosphere shall not be excluded;
8)   the design and construction of systems containing desired, controlled combustion processes, unless they can act as ignition sources in potentially explosive atmospheres.

  • Standard
    47 pages
    English language
    sale 10% off
    e-Library read for
    1 day
  • Draft
    47 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
CEN/TR 16829:2016+AC:2019(Main + Amendment)
Fire and explosion prevention and protection for bucket elevators
SIST-TP CEN/TR 16829:2017+AC:2019

This European Technical Report applies to bucket elevators that may handle combustible products capable of producing potentially explosive atmospheres of dust or powder inside the bucket elevator during its operation. The precautions to control ignition sources will also be relevant where the product in the bucket elevator creates a fire risk but not an explosion risk.
For the purposes of this report, a bucket elevator is defined as an item of bulk material handling equipment that carries material in powder form or as coarse products such as whole grain, wood chips or flakes, in a vertical direction by means of a continuous movement of open containers.
This Technical Report specifies the principles of and guidance for fire and explosion prevention and explosion protection for bucket elevators.
Prevention is based on the avoidance of effective ignition sources, either by the elimination of ignition sources or the detection of ignition sources.
Explosion protection is based on the application of explosion venting, explosion suppression or explosion containment and explosion isolation rules specifically adapted for bucket elevators. These specific rules may be based on agreed test methods.
This European Technical Report does not apply to products that do not require atmospheric oxygen for combustion.

  • Technical report
    63 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 14460:2018(Main)
Explosion resistant equipment
SIST EN 14460:2018

This European Standard specifies requirements for explosion resistant equipment which will be able to withstand an internal explosion without rupturing and will not give rise to dangerous effects to the surroundings. It is applicable to equipment (vessels and systems) where explosions are considered to be an exceptional load case.
There are two types of explosion resistant equipment: explosion pressure resistant and explosion pressure shock-resistant equipment (see Figure 1).
(...)
Explosion pressure resistant equipment is designed to withstand the explosion pressure without permanent deformation and will not give rise to dangerous effects to the surroundings. Since the design and calculation methods for explosion pressure resistant equipment are similar to those described in EN 13445-1 to -6 "Unfired pressure vessels" they are not repeated in this standard.
For explosion pressure shock resistant equipment permanent deformation is allowed provided the equipment will not give rise to dangerous effects to the surroundings. This design has been developed especially for explosion protection purposes. This standard focusses on the requirements for explosion pressure shock resistant equipment.
This standard is valid for atmospheres having absolute pressures ranging from 800 mbar to 1 100 mbar and temperatures ranging from −20 °C to +60 °C. This standard may also be helpful for the design, construction, testing and marking of equipment intended for use in atmospheres outside the validity range stated above, as far as this subject is not covered by specific standards.
This standard applies to equipment and combinations of equipment where deflagrations may occur and is not applicable to equipment and combination of equipment where detonations may occur. In this case, different design criteria for the required explosion resistance are applicable which are not covered by this standard.
It is not applicable to equipment which is designed according to type of protection, flameproof enclosures "d" (EN 13463-3 or EN 60079-1).
This standard does not apply to offshore situations.
This standard is only applicable for equipment where metallic materials provide the explosion resistance. This standard does not cover fire risk associated with the explosions, neither with the materials processed nor with the materials used for construction.

  • Standard
    36 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN ISO/IEC 80079-20-2:2016/AC:2017(Corrigendum)
Explosive atmospheres - Part 20-2: Material characteristics - Combustible dusts test methods - Technical Corrigendum 1 (ISO/IEC 80079-20-2:2016/Cor 1:2017)
SIST EN ISO/IEC 80079-20-2:2016/AC:2018

2017-07-03 - Endorsement of ISO corrigendum including corrigendum content for the EN ISO version! TAN & SV collaboration

  • Corrigendum
    15 pages
    English and French language
    sale 10% off
    e-Library read for
    1 day