* ሐ ምንም ቁጥጥር: ማቀዝቀዝ እና lubricating ጊዜና የሚቆራረጥ ጊዜ ምንም ቁጥጥር ቁጥጥር ነው
* vulnerability to social collapse - if there is not enough time to safely shut it down and safely remove and hide the nuclear material