One Safety Question per Day 2021.8.4
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After a natural gas leak, if the concentration in a confined space reaches 35%, then ( ). A. Explodes immediately upon contact with an open flame B. Within a safe range C. Will not explode, but it is dangerous D. Difficult to determine
C. It won’t explode, but it’s very dangerous
According to \"General Properties of Liquefied Natural Gas\" GB19204-2003, the lower and upper limits for natural gas to burn and explode in air are 5%–15%; in other words, at 35% it will not burn or explode. However, if a confined space loses its integrity, the concentration inside the container can reach the explosive limit, making it very dangerous.