Analisys of dust respirators exhalation valves construction
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- Category: Ecology
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Authors:
S.I. Cheberiachko, Candidate of Technical Sciences, State Higher Educational Institution “National Mining University”, Senior Lecturer of the Aerology and Labour Protection Department, Dnipropetrovsk, Ukraine
D.I. Radchuk, State Higher Educational Institution “National Mining University”, Assistant Lecturer of the Aerology and Labour Protection Department, Dnipropetrovsk, Ukraine
Annotation:
The authors have analyzed the exhalation valve in the respirator construction and have found that its presence reduces the breathing resistance and allows removing moisture from undermask space. Structural features of the exhalation valve have been investigated by standardized method tests and identified key parameters and impermeability. Analysis of the effect of temperature on the impermeability of valves showed that it leads to damage of the petal and performance degradation. Tests with simulated ingress of dust into the valve has been carried out.
References:
1. Голінько В.І. Застосування респіраторів на вугільних і гірничорудних підприємствах: Монографія / Голінько В.І., Чеберячко С.І., Чеберячко Ю.І. – Д.: НГУ, 2008. – 99 с.
Holinko V.I. Use of respirators at coal and ore mining and processing enterprises: Monograph / Holinko V.I., Cheberiachko S.I., Cheberiachko Yu.I. – D.: NGU, 2008. – 99 p.
2. Каминский С.Л. Основы рациональной защиты органов дыхания на производстве: Учебное пособие / Каминский С.Л. – СПб.:Проспект Науки, 2007.– 208с.
Kaminskiy S.L. Bases of efficient protection of respiratory organs at factories: Tutorial / Kaminskiy S.L. – SPb.: Prospekt Nauki, 2007. – 208 p.
3. Evaluation of Exhalation Valves / Yu-Mei Kuo, Chane-Yu Lai, Chin-Chien Chen, Bo-Hong Lu, Sheng-Hsiu Huang, Chun-Wan Chen // British Occupational Hygiene Society. – 2005. Vol .49. – No.7 – pp. 563–568.
4. Детали резиновые к средствам индивидуальной защиты органов дыхания. Технические условия: ГОСТ 17263-79. – [Введ. 01.01.81]. – М.: Изд-во стандартов, 1988. – 40 с.
Rubbers for respiratory protective devices. Technical requirements: GOST 17263-79. – [implemented 01.Jan.81]. – M.: Izd-vo standartov, 1988. – 40 p.
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