sigma S6 Oil Spill Detection System at work in Alaska

Aug 23, 18

Maritime activity in the Arctic is increasing as permanent sea-ice diminishes and the probability of oil spills in the region is increasing as well. High priority has been placed on developing options for identifying and recovering oil in Arctic waters. Nowhere is this demonstrated better than in the Port of Valdez, Alaska, which sees supertankers, handling more than 1.5 million barrels of crude oil, transit through its waters every day. The tankers are escorted by a fleet of nine tugs operated by Edison-Chouest Offshore. The tugs are equipped with a state of the art sigma S6 Oil Spill Detection (OSD) system from Rutter Inc.

As the United States’ northern-most ice-free port and the southern terminus of the trans-Alaska oil pipeline (TAPS), Valdez has an important stake in such technological implementation. The OSD system interprets raw radar data provided by the on-board Raytheon NautoScan digital radars, interfacing seamlessly with the radars and other bridge software. The systems are critical in the event of an oil spill emergency and allow shore-side operations to see the monitoring data from the tugs in real-time. Every step in the operation is efficiently controlled by the operational center through the data sharing capability of the sigma S6 system, known as sigma S6 Connect.

The Alyeska Pipeline Service Company manages TAPS operations and worked in partnership with Marine Technologies, LLC to ensure that appropriate oil spill detection equipment was installed on the tugs. “By using the latest in oil spill detection and tracking technology, a reliable measure of surveillance and environmental protection is added to operations,” said a representative from Marine Technologies, LLC.  Rutter provided certification training to several of the Marine Technologies and Edison-Chouest employees as sigma S6 technicians thereby ensuring efficient operations.

The early detection of any spill and subsequent on-going monitoring provided by the sigma S6 spill detection technology provides peace of mind to operators. In spite of harsh port conditions, with potential high sea states, the systems will alert on the detection of oil in the water providing the location and outline of the spill. For these reasons the tugboats, which consist of six escort tugs and three assist tugs, all have OSD capabilities. The systems are able to monitor the surface of the water during low visibility (eg. fog, rain) and in darkness for a distance of up to four nautical miles.

The Port of Valdez offers access to Alaska’s interior as well as to the United States Pacific Northwest, Northern Canada, and Pacific Rim trade routes. Therefore, it is no small wonder that great care is being taken to protect the port and its assets. By implementing these proactive measures, Valdez is demonstrating the forward thinking attitude that is hopefully characteristic of a trend in all future Arctic operations. The heightened state of awareness surrounding environmental contamination in the Arctic has propelled research into better, more site-specific spill detection and response techniques. The Rutter sigma S6 Oil Spill Detection system is an integral part of this solution.