• There are no items in your cart

AS/NZS 61241.2.1:2000

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Electrical apparatus for use in the presence of combustible dust Test methods - Methods for determining the minimum ignition temperature of dust
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

06-30-2017

Language(s)

English

Published date

02-03-2000

Preview

1 - AS/NZS 61241.2.1:2000 ELECTRICAL APPARATUS FOR USE IN THE PRESENCE OF COMBUSTIBLE DUST - TEST METHODS- METHODS FOR DETERMINING..
4 - PREFACE
5 - CONTENTS
6 - INTRODUCTION
7 - 1 Scope
7 - 2 Normative references
8 - 3 Definitions
8 - 3.1 dust:
8 - 3.2 ignition of a dust layer:
8 - 3.3 minimum ignition temperature of a dust layer:
8 - 3.4 ignition of a dust cloud:
8 - 3.5 ignition temperature of a dust cloud:
8 - 4 Method A: Dust layer on a heated surface at a constant temperature
8 - 4.1 Preparation of dust sample
8 - 4.2 Test apparatus
9 - 4.2.1 Heated surface
9 - 4.2.2 Dust layer thermocouple
9 - 4.2.3 Temperature measurements
9 - 4.2.4 Ambient temperature measurements
9 - 4.2.5 Dust layers
10 - 4.2.6 Formation of dust layer
10 - 4.3 Procedure
10 - 4.3.1 General
11 - 4.3.2 Method
11 - 4.3.3 Results
12 - 4.4 Test acceptance criteria
12 - 4.5 Reporting of results
12 - 4.6 Application of results
13 - 5 Method B: Dust cloud in a furnace at a constant temperature
13 - 5.1 Preparation of dust sample
13 - 5.2 Test apparatus
13 - 5.3 Procedure
13 - 5.3.1 Setting-up
13 - 5.3.2 Determination of minimum ignition temperature
14 - 5.3.3 Mass of dust
14 - 5.3.4 Air pressure
14 - 5.4 Criterion of ignition
14 - 5.5 Minimum ignition temperature of a dust cloud
14 - 5.6 Reporting of results
15 - ANNEX A - Method A - Construction of a heated surface and measurement of temperature distribution on the surface
21 - ANNEX B - Construction of a constant temperature furnace

Specifies two test methods for determining the minimum ignition temperatures of dust. This Standard is identical with and has been reproduced from IEC 61241-2-1:1994.

This part of AS/NZS 61241 specifies two test methods for determining the minimum ignition temperatures of dust.The methods are not suitable for use with substances having explosive properties.Method A (clause 4) is applicable to the determination of the minimum temperature of a prescribed hot surface which will result in the decomposition and/or ignition of a layer of dust of a specified thickness deposited on it. The method is particularly relevant to industrial equipment with which dust is present on hot surfaces in thin layers exposed to the atmosphere.Method B (clause 5) is applicable to the determination of the minimum temperature of a prescribed hot surface which will result in the ignition of a cloud of a given sample of dust or other particulate solid. The test is intended to be carried out as a complementary test after determining the minimum ignition temperature of a dust layer by method A of this standard.NOTES concerning method B1 Because the method of operation of the furnace gives short residence times for dust particles within it, this method of test is applicable to industrial equipment where dust is present as a cloud for a short time. This method of test is of small scale and the results are not necessarily representative of all industrial conditions.2 The method is not applicable to dusts which may, over a longer period of time than provided for in the test method, produce from deposits gases generated during pyrolysis or smouldering.

Committee
EL-014
DocumentType
Standard
ISBN
0 7337 2950 9
Pages
25
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

Standards Relationship
IEC 61241-2-1:1994 Identical

First published as AS/NZS 61241.2.1:2000.

AS/NZS 4745:2004 Code of practice for handling combustible dusts
AS 3846-2005 The handling and transport of dangerous cargoes in port areas
AS/NZS 3004.2:2008 Electrical installations - Marinas and recreational boats Recreational boats installations
AS/NZS 3019:2007 Electrical installations - Periodic verification
AS/NZS 4745:2012 Code of practice for handling combustible dusts
AS/NZS 61241.4:2002 Electrical apparatus for use in the presence of combustible dust Type of protection 'pD'
HB 239:2011 Guidance on the repair and overhaul of electrical equipment for explosive atmospheres
AS 60204.11-2006 Safety of machinery - Electrical equipment of machines Requirements for HV equipment for voltages above 1000 V a.c. or 1500 V d.c and not exceeding 36 kV (IEC 60204-11, Ed. 1.0 (2000) MOD)
AS/NZS 2381.1:2005 Electrical equipment for explosive gas atmospheres - Selection, installation and maintenance - General requirements
AS 60204.1-2005 Safety of machinery - Electrical equipment of machines General requirements (IEC 60204-1, Ed. 5 (FDIS) MOD)
AS/NZS 4783.2:2002 Performance of electrical lighting equipment - Ballasts for fluorescent lamps Energy labelling and minimum energy performance standards requirements (Reconfirmed 2013)
HB 13-2007 Electrical equipment for hazardous areas
HB 13-2000 Electrical equipment for hazardous areas
AS/NZS 61241.1.2:2000 Electrical apparatus for use in the presence of combustible dust Electrical apparatus protected by enclosures and surface temperature limitation - Selection, installation and maintenance
AS/NZS 60079.14:2009 Explosive atmospheres Electrical installations design, selection and erection (IEC 60079-14, Ed. 4.0 (2007) MOD)

View more information
US$69.34
Excluding Tax where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.