allumette de sûreté

 n.  safety match, match used for creating a fire  detail>>

cran de sûreté

 n.  safety catch, safety lock, lock to prevent accidental use; lock, device in a firearm ...  detail>>

dispositif de sûreté

 n.  safety device  detail>>

facteur de sûreté

 n.  safety factor, considering several different elements in a calculation to be sure of ...  detail>>