conflict resolution
I'm guessing that submitting a safety report of some sort might not work ... as it will land on his desk.
First, is it a matter of interpretation of a process or situation? Or is it something to do with a breach of procedure?
In a perfect world it should be possible to establish what the situation is, identify why it is a problem (risk, consequence etc), agree the level of severity, establish what alternatives there might be, decided on a solution and then consider the way to increase buy-in to the solution.