report any fire safety defects to the Responsible Person, or their on-site representative (such as the managing agent, or caretaker or concierge if there is one).
rhoi gwybod am unrhyw ddiffygion diogelwch tân i'r Person Cyfrifol, neu ei gynrychiolwyr ar y safle (megis yr asiant rheoli neu'r gofalwr porthwr os oes un).