A problem with ARMA 3, partially to do with the AddAction Menu is that all explosives are always in the menu no matter where they are in the inventory, this means there is a chance to accidentally place explosives when meaning to do something else.
ACE in ARMA 2 counter-acted this by making the items in backpacks (mainly explosives) unusable meaning you had to take them out yet Ammo and Meds were still usable.
What I am trying to say is that if an explosive such as a Tripmine or Satchel is in your backpack, you should be unable to place it until it is put in your vest, etc. Now that does cause problems if you don't have a vest but the only other way to solve it is to make an interaction menu with explosives to Arm or Pick them up.