EN 12881-1:2005
(Main)Conveyor belts - Fire simulation flammability testing - Part 1: Propane burner tests
Conveyor belts - Fire simulation flammability testing - Part 1: Propane burner tests
This part of EN 12881 describes three methods for measuring the propagation of a flame along a conveyor belt which has been exposed to a relatively high localised heat source such as a fire. The damage suffered by the conveyor belt, as well as its tendency to support combustion, are measured by observing the extent to which the fire spreads along the test piece.
Method A uses a test piece 2 m in length and consumes propane gas through the burner at the rate of (1,30 ± 0,05) kg per 10 min.
Method B uses a test piece 2,5 m in length and consumes propane gas through two burners mounted above and below the test piece trestle at the rate of (1,30 ± 0,05) kg per 10 min for each burner.
Method C uses a test piece 1,5 m in length and consumes propane gas through the burner at the rate of (565 ± 10) g per 50 min.
Fördergurte - Brandtechnische Prüfungen - Teil 1: Prüfungen mit dem Propanbrenner
Dieser Teil der EN 12881 legt drei Verfahren zur Bestimmung der Ausbreitung einer Flamme entlang eines Fördergurtes fest, der einer örtlichen Wärmequelle, wie Feuer, ausgesetzt war. Es wird sowohl die Beschädigung des Fördergurtes gemessen als auch seine Neigung, die Verbrennung zu unterstützen, wobei das Fortschreiten der Flamme entlang des Probekörpers beobachtet wird.
Für Verfahren A wird ein 2 m langer Probekörper verwendet, wobei der Propangasverbrauch des Brenners (1,30 ± 0,05) kg in 10 min beträgt.
Für Verfahren B wird ein 2,5 m langer Probekörper verwendet, wobei der Propangasverbrauch von zwei Brennern, die über und unter dem Gestell mit dem Probekörper montiert sind, (1,30 ± 0,05) kg in 10 min für jeden Brenner beträgt.
Für Verfahren C wird ein 1,5 m langer Probekörper verwendet, wobei der Propangasverbrauch des Brenners (565 ± 10) g in 50 min beträgt.
Courroies transporteuses - Essais simulation d'inflammation - Partie 1: Essais avec brûleur propane
La présente partie de l'EN 12881 décrit trois méthodes de mesurage de la propagation d'une flamme sur une courroie transporteuse qui a été exposée à une source de chaleur localisée relativement élevée, comme par exemple un feu. On mesure la détérioration de la courroie transporteuse, ainsi que sa tendance à entretenir la combustion, en observant le degré de propagation du feu sur l'éprouvette.
La méthode A utilise une éprouvette de 2 m de long et consomme du gaz propane à l'aide d'un brûleur, à raison de (1,30 ± 0,05) kg par 10 min.
La méthode B utilise une éprouvette de 2,5 m de long et consomme du gaz propane à l'aide de deux brûleurs installés au-dessus et au-dessous du support d'éprouvette à raison de (1,30 ± 0,05) kg par 10 min pour chaque brûleur.
La méthode C utilise une éprouvette de 1,5 m de long et consomme du gaz propane à l'aide d'un brûleur, à raison de (565 ± 10) g par 50 min.
Naprave za kontinuirni transport – Trakovi tračnih transporterjev – Požarnovarnostni preskusi – 1. del: Preskusi s propanskim gorilnikom
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2006
1DSUDYH]DNRQWLQXLUQLWUDQVSRUW±7UDNRYLWUDþQLKWUDQVSRUWHUMHY±
3RåDUQRYDUQRVWQLSUHVNXVL±GHO 3UHVNXVLVSURSDQVNLPJRULOQLNRP
Conveyor belts - Fire simulation flammability testing - Part 1: Propane burner tests
Fördergurte - Brandtechnische Prüfungen - Teil 1: Prüfungen mit dem Propanbrenner
Courroies transporteuses - Essais simulation d'inflammation - Partie 1: Essais avec
bruleur propane
Ta slovenski standard je istoveten z: EN 12881-1:2005
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
53.040.20 Deli za transporterje Components for conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 12881-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2005
ICS 13.220.40; 53.040.20
English Version
Conveyor belts - Fire simulation flammability testing - Part 1:
Propane burner tests
Courroies transporteuses - Essais simulation Fördergurte - Brandtechnische Prüfungen - Teil 1:
d'inflammation - Partie 1: Essais avec brûleur propane Prüfungen mit dem Propanbrenner
This European Standard was approved by CEN on 26 August 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12881-1:2005: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Propane gas supply.5
4 Method A – Two metre single burner test .6
4.1 Apparatus .6
4.2 Preparation of test pieces .9
4.3 Temperature at commencement of test .9
4.4 Number of tests.9
4.5 Procedure .10
4.6 Termination of tests.10
4.7 Measurement of damage to test pieces .10
4.8 Test report .11
5 Method B – Double burner test .12
5.1 Apparatus .12
5.2 Preparation of test pieces .13
5.3 Temperature at commencement of test .13
5.4 Number of tests.13
5.5 Procedure .14
5.6 Termination of tests.14
5.7 Measurement of damage to test pieces .14
5.8 Test report .15
6 Method C – Mid-scale fire propagation test .15
6.1 Apparatus .15
6.2 Preparation of test pieces .22
6.3 Installation of the test pieces and burner.22
6.4 Temperature at commencement of test .22
6.5 Number of tests.23
6.6 Procedure .23
6.7 Termination of tests.23
6.8 Expression of results.23
6.9 Exhaust temperature calibration .24
6.10 Test report .25
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC .26
Bibliography.27
Foreword
This European Standard (EN 12881-1:2005) has been prepared by Technical Committee CEN/TC 188
“Conveyor belts”, the secretariat of which is held by BSI.
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 2006, and conflicting national standards shall be withdrawn at the
latest by April 2006.
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this European
Standard.
The other part of EN 12281 is:
EN 12881-2, Conveyor belts – Fire simulation flammability testing – Part 2: Large scale fire test
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
Introduction
This European Standard is a type B1 standard as stated in EN ISO 12100-1.
The provisions of this European Standard may be supplemented or modified by a type C standard.
The machinery concerned and the extent to which hazards, hazardous situations and events are covered are
indicated in the scope of this European Standard.
NOTE For machines which are covered by the scope of a type C standard and which have been designed and built
according to the provisions of that standard, the provisions of that type C standard take precedence over the provisions of
this type B1 standard.
The methods of test described in this part of EN 12881 are intended to provide an indication of the reaction of
a conveyor belt to a fire situation. However, in doing so attention is drawn to the fact that in assessing the
overall flammability characteristics of conveyor belting for specific installations, it is not sufficient to rely solely
on any single method of test but consideration has also to be given to the individual site location.
WARNING — The tests described in this part of EN 12881 can generate large amounts of smoke and
heat. It is therefore essential to conduct the tests with caution, having due regard to health and safety
considerations and to terminate any test immediately if at any time it is considered advisable to do so.
In this regard it is recommended that no test should be supervised by only one person.
1 Scope
This part of EN 12881 describes three methods for measuring the propagation of a flame along a conveyor
belt which has been exposed to a relatively high localised heat source such as a fire. The damage suffered by
the conveyor belt, as well as its tendency to support combustion, are measured by observing the extent to
which the fire spreads along the test piece.
Method A uses a test piece 2 m in length and consumes propane gas through the burner at the rate of
(1,30 ± 0,05) kg per 10 min.
Method B uses a test piece 2,5 m in length and consumes propane gas through two burners mounted above
and below the test piece trestle at the rate of (1,30 ± 0,05) kg per 10 min for each burner.
Method C uses a test piece 1,5 m in length and consumes propane gas through the burner at the rate of
(565 ± 10) g per 50 min.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 10088-3, Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods,
wire, sections and bright products of corrosion resisting steels for general purposes
EN 22768-1:1993, General tolerances - Part 1: Tolerances for linear and angular dimensions without
individual tolerance indications (ISO 2768-1:1989)
ISO 65, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 9162:1989, Petroleum products – Fuels (Class F) – Liquefied petroleum gases – Specifications
3 Propane gas supply
The burners used in each method shall be supplied from bottled propane gas complying with ISO 9162 which
shall be fed to each burner, using high pressure propane hose having a minimum internal diameter of 6,3 mm,
either:
a) through a pressure reducing valve, a non-return valve and an orifice plate 1,7 mm thick with a 2,5 mm
diameter hole; or
b) through a pressure reducing valve and a non-return valve followed by a flowmeter calibrated to ensure
that the correct mass of gas is consumed.
Before and during the test, immerse each gas cylinder to approximately two-thirds of its height in a bath of
water at a temperature of (25 ± 3) °C. Ensure that each gas cylinder is not emptied at the end of a test by
more than 90 % of its gas mass capacity.
4 Method A – Two metre single burner test
4.1 Apparatus
4.1.1 Gallery (see Figure 1) having a cross section not greater than 6 m , a height of not less than 1,9 m
and not greater than 2,25 m and a width of not less than 1,9 m and not greater than 2,75 m through which air
is drawn by an adjustable fan. The gallery shall have a concrete floor and shall be not less than 15,0 m long
measured from the gallery entrance.
4.1.2 Trestle (see Figure 2) comprising a framework having internal dimensions 2,25 m long x 1,25 m wide
and constructed of steel tubing complying with ISO 65, having a bore designation of DN 15 heavy series. The
upper sides of the trestle frame shall be fitted with rod retainers to position and retain 15 steel bars
manufactured from an austenitic chrome/nickel steel of an appropriate quality, such as 1·4310X CrNi88
complying with EN 10088-3, resistant to rust, acid and heat. The bars shall be 10 mm diameter x 1,4 m in
length and form the frame on which the belting rests. The upper surface of the bars shall be 350 mm from the
floor.
4.1.3 Burner, constructed in accordance with Figure 3, comprising a square having side dimensions of
(450 ± 9) mm and an overall height of (220 ± 5) mm. The burner shall be made of welded steel tube complying
with ISO 65, having a bore designation of DN 15
...
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