National Institute of Occupational Safety and Health, Japan
Influence of Temperature and Pressure on the Inflammability Limits of Ethylene
TR-1966-1
M.Naito
Influences of temperature and pressure to the upper inflammability of Ethylene are studied.
Experiments to establish the upper limit in the temperature range from room temperature to 200°C and pressure range from atmospheric to 10atm, show that the upper limit is raised with rise of temperature and pressure, and is 76 per cent by volume at maximum temperature with maximum pressure.
On the other hand, influences of added inert gas on the inflammability range of ethlene under elevated temperature and pressure are also studied.
The results show that the ratio of added nitrogen to air for noninflmmabilitizing at 200°C with 10atm is about twenty three times.
A Safe Distance between a High Voltage Live Line and a Pole-step on which Various Working Approaching the Line is Done.
TR-1966-2
M.Terasawa
Workers on poles, approaching high coltage live line, may have possible electric shock hazards from the overhead lines as a result of contacting parts of their bodies with the line.
This paper reports on the safe distance between a working pole-step and high voltage overfead live line, which has been investigated with reference to such as statures, arm-lengths of workers.
