Abstract: The commissioning of an offshore oil and gas production platform system is a critical task preceding mechanical completion of both onshore fabrication and offshore installation. The thoroughness and outcomes of the commissioning work will have a direct impact on the safe operation of the oil and gas fields. This article primarily addresses the preparatory work and overarching principles prior to system commissioning， alongside the key tasks that require focused attention during the commissioning phase. The primary framework encompasses platform power transmission and reception， crude oil generator commissioning， EMS (emergency management system) commissioning， central control logic testing， and the commissioning of water circulation and other utility systems. These cover areas such as power， process， utilities， and instrumentation controls. It provides a detailed elaboration on the pre-commissioning activities pertinent to conventional offshore oil and gas production platforms， the main elements of the commissioning process， and the objective of employing commissioning to promote construction progress and quality， thereby ensuring the seamless completion of the commissioning work.

Key words: pre-commissioning, platform, generator, utilities, central control, process