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Basic Introduction and Testing Process of Dust Explosion Concentration Testing

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| 2021-03-18|Return

Many dust related enterprises, such as feed processing plants, paper processing plants, etc., do not know whether the relevant workshops belong to explosive workshops and whether they need toZhongnuo TestingWhen taking relevant dust explosion prevention measures, it is necessary to consider using designated samples from the dust workshopDust explosionRelated tests have been conducted.

1、 Related tests

1Dust cloud explosiveness screening test: This test is used to determine whether there is explosive dust

Testing standards:

A、ISO IEC 80079-20-2-2016Explosive gas environment20-2Partial material characteristics - Combustible dust test method

B、ASTM EI 1226-12aStandard test method for determining the explosiveness of dust clouds

C、VDI 2263-1:1990Hazard assessment of dust combustion and dust explosion——Test method for determining dust safety characteristics of protective measures

 

2Lower explosive limit(LEL)The minimum concentration at which a mixture of flammable vapors, gases, or dust with air can explode upon contact with a fire source (concentration of flammable vapors or gases, calculated by volume ratio)

Testing standards:

A、GB/T 16425-2018Determination method for lower limit concentration of dust cloud explosion

B、ASTM E 1515-14Determination method for minimum explosive concentration standard of combustible dust

C、BS EN 14034-3:2006 A1:2011Measurement of Dust Cloud Explosion Characteristics3Part: Lower limit of dust cloud explosionLELThe determination

D、VDI 2263-1:1990Hazard assessment of dust combustion and dust explosion——Test method for determining dust safety characteristics of protective measures

 

3Maximum explosion pressurePmaxExplosion indexKstImportant parameter reflecting the intensity of the explosion,Used for explosion pressure relief, explosion suppression, explosion isolation, and explosion resistance design.

Testing standards:

A、GB / T 16426-1996Method for determining the maximum explosion pressure and maximum pressure rise rate of dust clouds

B、ASTM E1226-12aStandard test method for determining the explosiveness of dust clouds

C、BS EN 14034-1-2004 A12011 , BS EN 14034-2-2006 A12011Concept of Dust Cloud Explosion Characteristics: Maximum Explosion Pressure of Dust CloudPmaxDetermination of dust cloud explosion characteristics: Section4part:The maximum oxygen concentration of dust cloudsLOCThe determination

D、VDI 2263-11990 Hazard assessment of dust combustion and dust explosion——Test method for determining dust safety characteristics of protective measures

E、ISO 6184-11985 Explosion suppression system.The1part:Determination of explosion index of combustible dust in the air

 

2、 Sample testing process

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