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Installation amp。 Commissioning Planning 6 7 8 Overall Operation amp。 Maintenance Planning Overall Validation Planning Overall Planning Back to appropriate Overall Safety Lifecycle phase SIL Determination Hazard Identification Software design Overall Operation amp。Maintenance Planning Overall Operation amp。 Maintenance Overall Modification amp。 Retrofit 169。 ABB Page 5 Safety Lifecycle, where are we 169。 ABB Page 6 Hardware Software Relationship 169。 ABB Page 7 Software example ? A client order c on s t?TVp*169。 ABB Page 8 Software example ? In the specification ? Reqirement ? Calculate the pressure with the following formula ? The programmer ? Programs according to 83 ? Tests requirement ? Program is done according to the specification TV*cp ?169。 ABB Page 9 Software example ? What can go wrong? ? Is the specification correct? ? This project not… ? Was th