Assessors will assess referees locally, usually a couple of times a season, and maybe more if complaints are received about a specific referee. The Fai also run developement modules around the country to help further referees knowledge of the LotG and their guidelines.
I'm not entirely sure what you're getting at with the players safety bit. A referee can't be held accountable if a player is injured, whether it be from a tackle or an act of violence!!
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