By De Souza, E.
Read or Download Mine Ventilation: Proceedings of the North American/Ninth US Mine Ventilation Symposium, Kingston, Canada, 8-12 June 2002 PDF
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Extra info for Mine Ventilation: Proceedings of the North American/Ninth US Mine Ventilation Symposium, Kingston, Canada, 8-12 June 2002
Sample text
It must also be capable of preventing the uncontrolled release of radioactive contaminants from the facility. Although a radioactive materials release in the facility is very unlikely, the ventilation system incorporates many special features to reduce or prevent the spread of contamination. Although it is in the relative infancy of its operational life, and the basic design “footprint” of 2 DESCRIPTION OF THE UNDERGROUND VENTILATION SYSTEM Four vertical shafts, three of which act as intake airways, provide access and ventilation for the underground facility.
To assess the problem, another ramp ventilation survey was carried out on October 20, 1998. The survey started at the crosscut 9 and progressed down to crosscut 3. Air pressures, volumes and temperatures were measured at each station. Air samples were also taken and analyzed for dust concentrations. During the survey, three water transfer points and two sources of particulate matter were identified. High-pressure water droplets mixed with entrained cold air were generated at each transfer point.
12 kPa. 00 kPa. 8 m3/s was measured in the shaft below the 4900 level shaft station. 4 m3/s will flow from the shaft. 17 kPa. 00 kPa. 0 m3/s was measured in the shaft below the 4900 level shaft station. The relatively high pressure existing at the shaft station can be attributed to a suction pressure influence from the WRAR and from the Williams fan. 1, it was presumed that, during the underground test, some of the shaft downcast flow below 5050 level exhausted via this route to the ERAR. It was predicted that, with a fan installed on the 4750 shaft station door, and with the ERAR regulators closed, the 4750 level could be ventilated and air exhausted into the shaft instead of having it exhausted via the ERAR.
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