tokens: The supplier shall perform task 8 according to the following procedure : 1 . Periodically assess and review all identified hazards and update the results after each iteration of the hazard analysis process . 2 . Identify changes to existing hazards , and subsequently initiate new hazard analysis . 3 . Verify the performance and the effect of the hazard reduction activities . 4 . Identify and communicate the evolution of hazards over the project life cycle .