Be sure to close the valve before sleeping.

在入睡之前，要确认气体阀门一定关闭。

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Slowly close the valve, reduce the intensity of shock wave.

缓慢关闭阀门，削减冲击波的强度。

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If dripping continues, close the valve more tightly in small increments until dripping ceases.

如果滴水仍然继续，则稍微更紧的关闭阀门直到滴漏停止。

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Risk assessments on the next stage, to close off the valve where the oil is coming from, are still being carried out.

BBC: Shell claims progress on North Sea oil leak

That included Exxon employees' failure to close an upstream safety valve, which could have significantly reduced the size of the spill after it was first detected.

NPR: APNewsBreak: $1.7M Penalty Proposed In Exxon Spill

Proper metrics such as the amount of time it takes to identify a problem and to close a valve are essential.

FORBES: Pipeline Explosion Rattles Natural Gas Industry