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An equipment problem involving steam to the main turbine at the Palo Verde Nuclear Generating Station in Arizona caused a shutdown of Unit 2, APS Generation said on Friday. The 1,270 MW unit (APS share = 380 MW) performed as designed in this situation and shut down automatically. While all of the equipment operated normally during the shutdown, the details are being investigated and it is expected that the unit will return to service early next week, APS said. Units 1 and 3 continue to operate at full power. In the meantime, APS reported that it has adequate supply to meet its customer needs. “Our reserves are sufficient to meet customer demands during the outage,” said Jim Levine, executive vice president of APS Generation. “Our customers will have the energy they need to keep their homes cool and their lights on.” APS Generation, a subsidiary of Pinnacle West Capital Corp., operates Palo Verde on behalf of the station’s six other owners.
The Midwest Independent Transmission System Operator (MISO) said that the North American Electric Reliability Council (NERC) Operating Committee approved the electric grid operator’s security plan to act as regional security coordinator for its members. NERC’s approval of MISO’s security coordination plan marks the first time the organization has approved a security plan that spans multiple NERC regional reliability councils. Regional Transmission Organizations such as MISO must have their security plan approved by NERC’s Operating Committee to be recognized by NERC as a security coordinator. Approval as a NERC security coordinator moves the MISO significantly closer toward implementing FERC’s Order 2000, which directs regional transmission organizations to be operating by Dec. 15, 2001.
DTE Energy Technologies, a subsidiary of DTE Energy, reported on Friday that the testing of Pratt & Whitney Power Systems’ new ST5 gas-fired turbine was successful. The ST5 was tested for distributed generation applications at Pratt & Whitney Canada’s (P&WC) facilities at Longueuil, Canada, and operated as expected. DTE and Pratt and Whitney said they hope to market the ST5 worldwide as part of the energy|now(TM) ENT 400. DTE said the ST5 is the largest gas turbine with air bearings. The company has ordered 100 ST5 units. The energy|now mini-turbine(TM), model ENT 400, is targeted for distributed generation applications for small- to medium-sized commercial customers and micro-grids serving residential and commercial development projects. DTE Energy Technologies also will be responsible for marketing the ENT 400. Commercial units are expected to be available in early 2002, the company said.
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