UL Certifies Microturbine for Hazardous Area Placement

By Consulting Specifying Engineer Staff July 21, 2005

Underwriters Laboratories confirmed earlier this month that Capstone Turbine, Chatsworth, Calif., has successfully completed certification testing on its new 30-kW product specifically designed for hazardous oil and gas applications. This certification states that the 30-kW unit meets the NEC Class I, Division 2, Groups C and D classification where explosive gases may be present under abnormal conditions.

According to the UL’s Hazardous Locations Gas & Oil Group, this is the first stationary engine manufacturer to receive UL certification for NEC Class I, Division 2. The formal listing process will be completed in the next few weeks and will note that the 30-kW Class I, Division 2, Groups C and D certification will be for hazardous area operating temperature class T2 (300°C). The unit is protected with Type X pressurization in accordance with NFPA 496.

The manufacturer claims that the microturbine satisfied a previously received order for two “hazardous area placement” C30 CID2 units that are now being commissioned on a Louisiana offshore platform. Capstone has been active in the research and development of offshore products for several years, including the installation of microturbine products with several multinational operators on oil and gas platforms in the Gulf of Mexico, Bay of Campeche, Gulf of Alaska, the North Sea and Mediterranean Sea.

An NEC Class I, Division 2 60-kilowatt C60 Offshore model is expected to be submitted to UL for certification and available later this year.

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