Grace Ann Yap Su-Mei

Grace Ann Yap Su-Mei is a Principal Engineer with a specialization in Energy with Group Technical Solutions, Petroliam Nasional Bhd (PETRONAS). Since joining PETRONAS 15 years ago, she has led more than 10 energy optimisation studies including Strategic Energy Optimization and Integration projects in the various PETRONAS refinery, gas and petrochemical facilities. In 2020, she was also the technical lead for the first Multi-Site Energy Optimisation Study in Kertih. She has also led CAPEX feasibility studies in particular for energy improvement and/or greenhouse gas reduction. In addition, she has been involved in the development of the PETRONAS Energy Standard Practices, conducting Energy Baselines, developing and delivering internal training for Energy Optimization and is the secretariat for the PETRONAS Value Improvement Program & Energy and Loss Community of Practice. She is a PETRONAS scholar, who graduated with a double degree in Chemical Engineering and Commerce with the University Medal from the University of Sydney. She is also a Chartered Chemical Engineer with iCHemE.

Speaker Details
  • Organisation


  • Position

    Principal (Energy), Group Technical Solutions

  • Update Time

    September 2022

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