The petroleum and chemical industries are facing pressure to become more energy efficient and sustainable. The use of green energy is a feasible option to address that issue. This paper discusses the application of various source technologies available to offshore petroleum and gas production platforms. The pros and cons of each source is considered, as applied to critical systems, including safety systems. A hybrid system using photovoltaic cells and wind generation, installed on an offshore platform in Brazil is reviewed.

This paper evaluates the protection system of an offshore gas production unit and proposes utilization of devices dedicated to identify the arc flash incidents inside the panels. A quantitative analysis has been performed by comparing the incident energy levels of the original design with the levels provided by the new design. The new design includes numerical relays equipped with dual sensing of arc flash: optical detection of the light and high-speed overcurrent detection. The analysis indicates that a drastic reduction of incident energy can be achieved. The reduction is based on very fast detection and elimination of the arc, lowering the arcing time.Index Terms-Arc flash, arcing time, incident energy, protective relay, safety in the workplace.

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