Evaluation of the Effectiveness of Active HRD Systems for Dust Explosion Suppression in a Technology Demonstrator System

Lesiak, Piotr; Bąk, Damian; Małozięć, Daniel; Grabarczyk, Marcin; Kołaczkowski, A.

doi:10.12845/sft.53.1.2019.3

Cited by 1 publication

(2 citation statements)

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“…Active HRD suppression system in a confined space was the subject of research work (Lesiak et al 2019). The test stand was designed and manufactured to meet the assumptions of the PN-EN 14034 series of standards.…”

Section: Introductionmentioning

confidence: 99%

“…Active explosion suppression systems tested by Lesiak et al (2019) as well as Späth et al (2011) anddu Plessis (2015) are based on the structure of the fire extinguisher tank in which the extinguishing material was kept at a certain high pressure (50-80 bar). Oleszczak et al (2007), Klemens et al (2007) and Gieras and Klemens (2012) studied the effectiveness of suppression of an explosion initiated by a mixture of corn starch with air pneumatically dispersed inside a 1.3 m 3 test chamber.…”

Section: Introductionmentioning

confidence: 99%

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Active protection of work area against explosion of dust–gas mixture

Szkudlarek

Janas

2021

Int J Coal Sci Technol

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Potentially explosive atmosphere can occur not only in the production systems of the food, energy, chemical and petrochemical industries but also in the production processes of the mining industry. Gases, vapours, mists and dusts arise can escape in an uncontrolled way during production, processing, transportation and storage of flammable substances. In combination with oxygen, they create explosive atmospheres that, if ignited, lead to an explosion causing catastrophic damage to people's lives and property. To protect against the results of hazardous dust–gas mixtures explosions in a confined work space, where employees can stay, various control and protection mechanisms are used in the form of an active explosion-proof system. The article presents the results of tests on an active system for limiting the effects of ignition of gas and/or dust based on a highly efficient explosion suppression system—equipped with an ignition detection system, high-pressure fire extinguisher and a power supply and trigger system. Smokeless powder was used as the explosive charge and sodium bicarbonate as the suppressive material. Tests of the effectiveness of the active explosion suppression system were carried out on two devices: a small-size dry dust collector and a zone extinguishing system adapted for direct explosion suppression in closed working spaces. In both cases, the explosion suppression process took place through the action of extinguishing powder blown out of the fire extinguisher after membrane perforation by compressed combustion products.

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Section: Introductionmentioning

confidence: 99%