ASTM International - ASTM E1226-19

Standard Test Method for Explosibility of Dust Clouds

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Organization: ASTM International
Publication Date: 15 December 2019
Status: active
Page Count: 15
ICS Code (Explosion protection): 13.230
ICS Code (Measurement of force, weight and pressure): 17.100
significance And Use:

5.1 This test method provides a procedure for performing laboratory tests to evaluate deflagration parameters of dusts.

5.2 The data developed by this test method may be used for the... View More

scope:

1.1 Purpose. The purpose of this test method is to provide standard test methods for characterizing the "explosibility" of dust clouds in two ways, first by determining if a dust is "explosible," meaning a cloud of dust dispersed in air is capable of propagating a deflagration, which could cause a flash fire or explosion; or, if explosible, determining the degree of "explosibility," meaning the potential explosion hazard of a dust cloud as characterized by the dust explosibility parameters, maximum explosion pressure, Pmax; maximum rate of pressure rise, (dP/dt)max; and explosibility index, KSt.

1.2 Limitations. Results obtained by the application of the methods of this standard pertain only to certain combustion characteristics of dispersed dust clouds. No inference should be drawn from such results relating to the combustion characteristics of dusts in other forms or conditions (for example, ignition temperature or spark ignition energy of dust clouds, ignition properties of dust layers on hot surfaces, ignition of bulk dust in heated environments, etc.)

1.3 Use. It is intended that results obtained by application of this test be used as elements of a dust hazard analysis (DHA) that takes into account other pertinent risk factors; and in the specification of explosion prevention systems (see, for example NFPA 68, NFPA 69, and NFPA 652) when used in conjunction with approved or recognized design methods by those skilled in the art.

Note 1: Historically, the evaluation of the deflagration parameters of maximum pressure and maximum rate of pressure rise has been performed using a 1.2-L Hartmann Apparatus. Test Method E789, which describes this method, has been withdrawn. The use of data obtained from the test method in the design of explosion protection systems is not recommended.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM E1226-19
December 15, 2019
Standard Test Method for Explosibility of Dust Clouds
5.1 This test method provides a procedure for performing laboratory tests to evaluate deflagration parameters of dusts. 5.2 The data developed by this test method may be used for the purpose of...
December 1, 2012
Standard Test Method for Explosibility of Dust Clouds
5.1 This test method provides a procedure for performing laboratory tests to evaluate deflagration parameters of dusts. 5.2 The data developed by this test method may be used for the purpose of...
May 15, 2012
Standard Test Method for Explosibility of Dust Clouds
1.1 Purpose. The purpose of this test method is to provide standard test methods for characterizing the “explosibility” of dust clouds in two ways, first by determining if a dust is “explosible,”...
January 1, 2010
Standard Test Method for Explosibility of Dust Clouds
1.1 Purpose. The purpose of this test method is to provide standard test methods for characterizing the “explosibility” of dust clouds in two ways, first by determining if a dust is “explosible,”...
November 15, 2009
Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
1.1 This test method is designed to determine the deflagration parameters of a combustible dust-air mixture within a near-spherical closed vessel of 20 L or greater volume. The parameters measured...
September 15, 2005
Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
1.1 This test method is designed to determine the deflagration parameters of a combustible dust-air mixture within a near-spherical closed vessel of 20 L or greater volume. The parameters measured...
March 10, 2000
Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
1.1 This test method is designed to determine the deflagration parameters of a combustible dust-air mixture within a near-spherical closed vessel of 20 L or greater volume. The parameters measured...
March 10, 2000
Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
1.1 This test method is designed to determine the deflagration parameters of a combustible dust-air mixture within a near-spherical closed vessel of 20 L or greater volume. The parameters measured...
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