EN 14983:2024
(Main)Explosion prevention and protection in underground mines - Equipment and protective systems for firedamp drainage
Explosion prevention and protection in underground mines - Equipment and protective systems for firedamp drainage
This document specifies the requirements for equipment and protective systems for firedamp drainage at mines. It also contains requirements for the construction and monitoring of this equipment and protective systems (see EN 1127 2:2014).
This document does not apply to firedamp utilization systems beyond the utilization shut-off device.
Explosionsschutz in untertägigen Bergwerken - Geräte und Schutzsysteme zur Absaugung von Grubengas
Dieses Dokument legt Anforderungen für Geräte und Schutzsysteme zur Absaugung von Grubengas aus Bergwerken fest. Es enthält auch Anforderungen für die Einrichtung und die Überwachung dieser Geräte und Schutzsysteme (siehe EN 1127 2:2014).
Dieses Dokument gilt nicht für Grubengasnutzungssysteme, die über die Nutzungsabsperrvorrichtung hinausgehen.
Prévention de l’explosion et protection contre l’explosion dans les mines souterraines - Appareils et systèmes de protection destinés au captage du grisou
Le présent document spécifie les exigences pour les appareils et systèmes de protection destinés au captage du grisou dans les mines. Il contient également les exigences relatives à la mise en place et à la surveillance de ces appareils et systèmes de protection (voir EN 1127 2:2014).
Le présent document ne s’applique pas au recyclage du grisou en aval du dispositif de fermeture.
Preprečevanje eksplozij in zaščita v podzemnih rudnikih - Oprema in zaščitni sistemi za odvajanje jamskega plina
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2024
Preprečevanje eksplozij in zaščita v podzemnih rudnikih - Oprema in zaščitni
sistemi za odvajanje jamskega plina
Explosion prevention and protection in underground mines - Equipment and protective
systems for firedamp drainage
Explosionsschutz in untertägigen Bergwerken - Geräte und Schutzsysteme zur
Absaugung von Grubengas
Prévention de l’explosion et protection contre l’explosion dans les mines souterraines -
Appareils et systèmes de protection destinés au captage du grisou
Ta slovenski standard je istoveten z: EN 14983:2024
ICS:
13.230 Varstvo pred eksplozijo Explosion protection
73.100.20 Prezračevalna, Ventilation, air-conditioning
klimatizacijska in and illumination equipment
razsvetljevalna oprema
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 14983
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2024
EUROPÄISCHE NORM
ICS 73.100.20 Supersedes EN 14983:2007
English Version
Explosion prevention and protection in underground
mines - Equipment and protective systems for firedamp
drainage
Prévention de l'explosion et protection contre Explosionsschutz in untertägigen Bergwerken - Geräte
l'explosion dans les mines souterraines - Appareils et und Schutzsysteme zur Absaugung von Grubengas
systèmes de protection destinés au captage du grisou
This European Standard was approved by CEN on 5 August 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14983:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Equipment and protective systems for firedamp drainage .10
4.1 General .10
4.2 Borehole standpipes .10
4.3 Drainage pipes for seals and stoppings .13
4.4 Water separators at drainage points .13
4.5 Firedamp pipes .13
4.5.1 General requirements for firedamp pipes .13
4.5.2 Measuring points for measuring equipment in firedamp drainage pipes .13
4.6 Pressure vessels in firedamp drainage plant .14
4.7 Pressure generators .14
4.7.1 Requirements for pressure generators .14
4.7.2 Reserve pressure generators .14
4.7.3 Location of pressure generators .15
4.8 Venting of the drained firedamp .15
4.9 Flame arresters in pipelines .15
4.9.1 Flame arresters .15
4.9.2 Firedamp vent pipe outlets .16
4.9.3 Firedamp drainage pipe .17
4.9.4 Gas utilization plant .17
4.9.5 Reserve container and operating state .17
4.10 Requirements for the design of electrical safety devices .17
4.11 Electrostatic ignition risks .18
5 Instructions for installation and use .18
Annex A (informative) Installation and use of firedamp drainage system .19
A.1 General .19
A.2 Work on firedamp pipes .19
A.3 Measures to be taken when gas levels fall below or exceed limit values during
firedamp drainage .20
A.4 Failure or shutdown of pressure generators .20
Annex B (normative) Monitoring of firedamp drainage system .21
B.1 Examination and inspection by competent persons .21
B.2 Measurement of the drained firedamp mixture and pressure .21
B.2.1 Measurements taken by hand .21
B.2.2 Fixed monitoring equipment. 21
B.3 Documentation . 22
B.4 Firedamp circuit plan . 22
Annex C (normative) Requirements for location of pressure generators . 23
Annex D (normative) Requirements for degassing equipment for abandoned surface
openings . 24
Annex E (informative) Example for calculation of t -path . 28
E.1 General . 28
E.2 Example for calculation of t90-path . 28
Annex F (informative) Significant Changes between this European Standard and
EN 14983:2007 . 30
Annex ZA (informative) Relationship between this European Standard and the requirements
of Directive 2014/34/EU aimed to be covered . 32
Bibliography . 35
European foreword
This document (EN 14983:2024) has been prepared by Technical Committee CEN/TC 305 “Potentially
explosive atmospheres — Explosion prevention and protection”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2025, and conflicting national standards shall be
withdrawn at the latest by October 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14983:2007.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
Firedamp drainage is a technical process for selected gas removal, the purpose of which is to reduce the
risks presented by inflammable gas and air mixtures. Firedamp drainage is therefore a measure for
preventive explosion protection.
In the mining industry, firedamp is drained from the underground workings of gassy mines, from
boreholes and abandoned mine workings to ensure that mine workers are not exposed to the risks
associated with the occurrence of an explosive atmosphere at their place of work. In this case, the
explosion risk results from unacceptable accumulations of firedamp occurring in the waste areas and
cavities left in the in the rock strata after the coal has been extracted from the coal seam. In such cases,
the need to drain these accumulations, and the complexity of the drainage system, depends on the amount
of firedamp produced by the coal and the likelihood of it occurring in explosive quantities in the mine
roadways and coal face. Examples of situations that might cause firedamp to move in dangerous
concentrations from the waste area or cavities into the mine roadways: a breakdown of the mine
ventilation system or a sudden reduction in the underground atmospheric pressure. National legislation
in EU coal mining member countries requires workers to be withdrawn to a safe place if firedamp levels
attain a specific nationally defined value in the general body of mine air. Firedamp drainage is therefore
often used in gassy mines in an attempt to ensure that the concentration of firedamp in the general body
of mine air is kept well below this critical level, even during abnormal situations such as those described
above.
Once the accumulations of firedamp have been drained from the affected areas, it is usually discharged
to the mine surface, but in some cases it is discharged into the mine return ventilation system. In systems
where the firedamp is brought to the mine surface, it is discharged to the atmosphere through an earthed
metallic discharge stack or pressurized and delivered to a utilization system, such as a gas-fired boiler.
In abandoned mines, firedamp drainage is used
— to prevent gas pressure building up and gas issuing at the surface in an uncontrolled manner, and
— to protect workers at an adjacent nearby mine, or
— to allow it to be utilized, for example by burning it in a gas-fired boiler to produce heat or to generate
electricity.
1 Scope
This document specifies the requirements for equipment and protective systems for firedamp drainage
at mines. It also contains requi
...
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