HAZOP is the best Hira method to be use for a complex design during a phase operation.
Hazard identification and risk analysis entails all all activities that are carry out to dentify hazards and evaluating risk at facilities all through their life cycle and the method use to control them.
Hazard and Operability Study (HAZOP) is
a technique use identify hazards and operating problems by employing the usage of guide words to study process deviations. A HAZOP is used to question all aspect of a process to discover what deviations from the intention of the design happened and what could be it's causes and consequences as well.
Therefore, HAZOP is the best Hira method to be use for a complex design during a phase operation.
Learn more about Hazard from the link below.
https://brainly.com/question/14367881