8 Reference of Death or Serious Injury matters
Any DSI matter which is required to be referred to the Commission shall be referred in such manner as the Commission specifies and—
(a) in a case where the Commission directs that the matter be referred to it, without delay and in any event not later than the end of the day following the day on which the Commission so directs;
(b) in any other case, without delay and in any event not later than the end of the day following the day on which the matter first comes to the attention of the appropriate authority.