Currently, Abu Dhabi Marine Operating Company (ADMA-OPCO) is developing three new fields. The respective projects or fields are named as A, B, C in subsequent sections of this paper. All three new fields have Main Automation Contractor (MAC) concept which means plant process control and safety systems are supplied by single manufacturer. This paper presents the difference in MAC concept between these projects and proposes an extended MAC Scheme which covers the electrical control system also in MAC scope. The authors predict that merger of process and electrical control system along with most of the subsystems (Packages) into a unified network will be the trend for future green field projects. The paper describes the technical and commercial advantages the proposed scheme can have over conventional MAC philosophy. A section of the paper also highlights the challenges associated for implementation of the proposed architecture.
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