ASTM E1226-19
Standard Test Method for Explosibility of Dust Clouds

Standard No.

ASTM E1226-19

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E1226-19

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 Test Method E789, which describes this method, has been withdrawn.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.

ASTM E1226-19 Referenced Document

• ASTM D3173 Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
• ASTM D3175 Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke
• ASTM E1445 Standard Terminology Relating to Hazardous Potential of Chemicals
• ASTM E1515 Standard Test Method for Minimum Explosible Concentration of Combustible Dusts*， 2022-06-01 Update
• ASTM E789 Standard Test Method for Dust Explosions in a 1.2-Litre Closed Cylindrical Vessel (Withdrawn 2007)
• ISO 6184-1 Explosion protection systems; Part 1 : Determination of explosion indices of combustible dusts in air

ASTM E1226-19 history

• 2019 ASTM E1226-19 Standard Test Method for Explosibility of Dust Clouds
• 2012 ASTM E1226-12a Standard Test Method for Explosibility of Dust Clouds
• 2012 ASTM E1226-12 Standard Test Method for Explosibility of Dust Clouds
• 2010 ASTM E1226-10 Standard Test Method for Explosibility of Dust Clouds
• 2009 ASTM E1226-09 Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
• 2005 ASTM E1226-05 Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
• 2000 ASTM E1226-00e1 Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts
• 2000 ASTM E1226-00 Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts