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http://dx.doi.org/10.7842/kigas.2018.22.6.104

Experimental Studies on the Aging Characteristics by Service Periods of Regulator Diaphragms at Governor Room of City Gas  

Lee, Chi-Woo (Disaster Safety & Fire Protection Program, Graduate School of Industry, Seoul National University of Science and Technology)
Park, Dal-Jae (Dept. of Safety Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Institute of Gas / v.22, no.6, 2018 , pp. 104-108 More about this Journal
Abstract
Experimental studies have been done to examine the aging characteristics by regulator diaphragms of gas pressure, governor room of city gas. Various testing samples with different service periods were manufactured. The results of SEM observation indicated that the surface and thickness of the samples tested were slightly sensitive to the service periods. It was found that as the service periods increased, the tensile strength of diaphragm samples decreased. For samples over 25 years of service, the strength decreased to approximately 60 % of that of new diaphragms. It was also found that as the service periods increased, the elongation increased.
Keywords
gas pressure regulator; diaphragms; service periods;
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