Below is a proposed wording for rule 1.5.5....
I think it leaves no doubt as to the intent of this rule.. Please feel free to comment.


1.5.5
When any robot is not in compertition any sharp or pointed edges must be coverd to prevent injury.
In addition, any moving, swinging, rotating or actuating arm, lever or mechanism must be fitted with a visible locking device that clearly shows that the arm/lever/mechanism is securely locked into place and incapable of accidental movement.
The only exception to this would be a mechanism that by its design is incapable of movement without electrical supply I.E. a mechanism powered by a lead screw or similar. In which case the removable link would be regarded as the locking device