Thorndon Cook Power
Thorndon Cook Power
Thorndon Cook Power
Phú Mỹ 2.2 CCGT Power Plant

Binary Plant Major Hazard Review

Mercury Energy Binary Plant

The Project

Under the Health and Safety at Work (Major Hazard Facilities) Regulations 2016 the Mercury Ltd binary cycle power plants have been designated as upper tier Major Hazard Facilities (MHF). 

Mercury is required to implement a complete Process Safety system for its MHF.

Thorndon Cook was engaged to prepare a technical specification covering binary cycle turbines and associated equipment.

Our Role

  • Initial assessment of Safety Case features required for submission to WorkSafe NZ
  • Preparation of draft process safety specification for binary cycle turbine
  • Specification was structured for integration with overall Mercury MHF process safety system


The process safety specification prepared by Thorndon Cook provided the client with input to the overall process safety system being developed for major hazard facilities incorporating binary cycle plant.


mechanical engineering, electrical engineering, control and instrumentation

asset management

planning and permit requirements

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