This is heaven's contingency plan.

这是天国的应急计划。

Is there a Plant Contingency Plan written?

是否有书面的工厂应急计划？

It would be sensible to have a contingency plan.

制定一份应急计划是明智的。

Eg: It would be sensible to have a contingency plan.

制定一份应急计划是明智的。

Prepare Contingency Plan for critical equipments.

制定关键设备应急方案。