B-nuts are a small piece of hardware that can cause a big problem if they are not properly secured

The latest NTSB Safety Alert can be applied to Process Safety! It speaks to the critical nature of “joinment” using a B-nut on fuel, oil, and air lines on aircraft.  It also addresses over-torquing or under-torquing as a failure mode for this joint. A B-nut is a common term for a nut that provides the...