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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: C200 Hazardous Location Turbine Assembly Engine exhaust ducting must be properly secured. Make sure that maximum back pressure on the engine is not greater than 8 inches (20.3 cm) H2O. Any termination used must prevent wind- driven rain or other water from entering while the turbine is not running. Vertical terminations of at least 1.2 m (4 feet) in length, with exhaust exit pointing down are acceptable. The exhaust can be ducted to a heat exchanger or other device, or to extended ducting. Offshore Platform and Coastal Installations For offshore platform installations, observe the following guidelines: • The hazardous location turbine assembly must be installed on the platform at a height of at least 40 feet (12 m) above the sea water line. • While installing the turbine assembly on grated floors is permitted, installation on a solid floor is the recommended method. The floor must cover the entire maintenance area of the turbine assembly or assemblies. For installations with multiple turbine assemblies, maintenance areas may overlap on adjacent systems. • A 7 foot (2.1 m) high wall must be installed on one side along the longer edge of the maintenance area. The wall must be located so that it blocks the direction of prevailing winds. It is acceptable to use the wall of an existing structure on the platform. If the hazardous location assembly will be welded to a platform, use extreme caution and follow these guidelines. Make sure that all external connections are removed during welding. This includes RS-232 cables, power cables, grounding cables, I/O connections, and any other conceivable connection. Instruct the welder to attach his return cable to the platform side of the weld, not the turbine side. Start the weld melt on the platform and then move the melt to the turbine assembly base. This assures that grounding is made before the arc comes in contact with the turbine. Controller Requirements The hazardous location controller must be installed in a non-hazardous (unclassified) area. The controller provides alarm relaying of all system faults, including loss of pressure via standard Modbus RTU protocol over RS-485 or TCP/IP. In accordance with applicable NFPA 496 and ATEX requirements, it is necessary to provide both audible and visual alarms at a constantly attended location alerting the user that the pressurization system has failed to maintain a positive pressure. It is the responsibility of the installer to ensure that these alarms are relayed to a manned console. The console must also provide alarming in case of loss of communications with the controller. 480047 Rev. B (November 2010) Page 31 of 82 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Application Guide Capstone Model C200 Hazardous Location Turbine Assembly
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