The calculation of severely hazardous radius and area of the leaky ammonia provides theoretically basis for working out emergency succor plan.

预测液氨泄漏的重度危险半径和面积，为企业事故应急预案的制定提供理论依据。

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In the case of cargo ships, no one under 18 May work in the areas marked on the ship's plan (to be attached to this Declaration) as "hazardous area".

对于货船来说，任何18岁以下的人都不得在船舶平面图(将附在本声明之后)中被标为“危险区域”的区域内工作。

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