Risk assessment involves a process of identifying hazards associated with the event, considering the risks arising from hazards and putting in plans and control measures to minimise harm.
Mae asesu risg yn cynnwys proses o nodi peryglon sy'n gysylltiedig â'r digwyddiad, ystyried y risgiau sy'n deillio o beryglon a rhoi cynlluniau a mesurau rheoli ar waith i leihau niwed.