Preventive measures and Safety valve

Safety valve and preventive measures are semantically related. in security guarantee topic. In some cases you can use "Safety valve" instead a noun phrase "Preventive measures".

Safety valve noun - A valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level.

Preventive measures and safety valve are semantically related. Sometimes you can replace phrase "Preventive measures" with "Safety valve", this phrases are similar.