00000nam 2200000za 4500 9.840462 CaOODSP 20221107151840 cr ||||||||||| 170726s1967 oncad ob f000 0 eng d CaOODSP eng n-cn--- M38-8/54E-PDF M38-8/54 Dainty, E. D. Diffusion of external methane atmospheres through gaps of various sizes and widths into enclosures of different volumes and the effects of greased joints [electronic resource] / E.G. Dainty and G.K. Brown, Fuels Research Centre. Ottawa : Queen's Printer, 1967. 23 p. : charts, ill. Reprint series ; RS 54 Cover title. "Presented to 12th International Conference of Mine-Safety Research Establishments, Dortmund, September 1967." Historical publication digitized from print 2017 [by Natural Resources Canada]. Includes bibliographical references (p. 15). "Fifty per cent methane-air mixtures were prepared in a cubical case containing a cylinder which was divided in half by a joint at a right angle to the longitudinal axis. The gap, joint width and internal volume were varied to determine their effects on the diffusion rate of the external mixture into the cylinder. The application of grease on the gap surface in sufficient quantities stopped the diffusion process, and the effects on the grease seal of internal pressures simulating pressure changes due to thermal cycling of electrical equipment, were briefly studied. The results showed that the seal was effective for pressures greater than those considered possible during thermal cycling"--Summary, p. [1]. gccst Mining industry gccst Coal gccst Gases Brown, G. K. Canada. Natural Resources Canada. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Reprint series - Dept. of Energy, Mines and Resources, Mines Branch ; RS 54 (CaOODSP)9.834843 PDF 1.70 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-54-eng.pdf 300133