Management of Change System is an essential component of HSE management. Whilst the typical risk management framework is aimed at ensuring a safe system of work, the somewhat complementary management of change system is crucial in sustaining that safe system of work.

In the execution of work activities, changes or deviation from defined processes/procedures is inevitable; and this is not necessarily a problem provided such changes are adequately controlled. The key consideration in managing changes is ensuring that risk posed by proposed changes, if any, remains ALARP.

In PETRONAS Carigali, the management of change system clearly defines the required change governance, spanning the entire value chain of the company business; it caters for:

  • Geophysical (survey and seismic) activities

  • drilling activities

  • facility design, fabrication and installation

  • production and maintenance activities

  • facility abandonment and decommissioning

Key considerations in the management of change system include the followings:

  • Types of changes requiring control are clearly defined; including changes to plant design, operating philosophy, plant equipment, operating parameters, standard operating procedures, personnel, bypass of safety critical equipment, etc.

  • For temporary changes, the maximum duration and criteria for approval of such changes clearly defined.

  • Types of risk assessment that need to be carried out for the various proposed changes; including aspect of risk screening and acceptance criteria.

  • Approval process, including review by multi-disciplines technical authorities.

  • Key performance indicators and target; the critical success factors of the management of change system.

Specific examples of changes, selected from amongst the different types of changes representing the entire business value chain, will be discussed. This is aimed at sharing PETRONAS Carigali experience on how changes are managed in the organization, including a perspective of the key challenges.

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