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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 TestingTake relevant dust explosion prevention measures, and at this time, consider using designated samples from the dust workshop for productionDust explosionRelevant 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:

AISO IEC 80079-20-2-2016Explosive gas environment20-2Test method for combustible dust with partial material characteristics

BASTM EI 1226-12aStandard test method for determining the explosiveness of dust clouds

CVDI 2263-1990Risk 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 combustible vapor, gas, or dust and air can explode upon contact with a fire source (concentration of combustible vapor, gas, calculated by volume ratio)

Testing standards:

AGB/T 16425-2018Determination method for lower limit concentration of dust cloud explosion

BASTM E 1515-14Standard measurement method for minimum explosive concentration of combustible dust

CBS EN 14034-3:2006 A1:2011Determination of explosion characteristics of dust clouds3Part: Lower explosive limit of dust cloudsLELDetermination of

DVDI 2263-1990Risk assessment of dust combustion and dust explosion——Test Method for Determining Dust Safety Characteristics of Protective Measures

 

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

Testing standards:

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

BASTM E1226-12aStandard test method for determining the explosiveness of dust clouds

CBS EN 14034-1-2004 A1:2011, BS EN 14034-2-2006 A1:2011Concept of explosion characteristics of dust clouds: maximum explosion pressure of dust cloudsPmaxDetermination of dust cloud explosion characteristics: Part4part:The maximum oxygen concentration of dust cloudsLOCDetermination of

DVDI 2263-1:1990 Risk assessment of dust combustion and dust explosion——Test Method for Determining Dust Safety Characteristics of Protective Measures

EISO 6184-1:1985 Explosion suppression system.Section1part:Determination of explosion index of combustible dust in the air

 

2、 Sample testing process

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