U.S. plans generator repair at 558-MW Bonneville Second

The U.S. Army Corps of Engineers says it plans to seek bids to repair a generator in the 558-MW Second Powerhouse at 1,076.6-MW Bonneville Dam, on the Columbia River in Oregon. The tentative due date for bids is May 8.

Work will involve Unit 11, a 70-megavolt-ampere, 18.8-kilovolt, 69.23-revolutions-per-minute generator with a rotor diameter of about 37 feet and a rotor height of 56 inches. The unit is one of 20 generators at the Bonneville Dam hydroelectric project.

The contractor is to move the generator stator so that it is round, plumb, and properly aligned to the turbine shaft; test and repair stator laminations; shrink the rotor rim onto rotor spider arms; check the integrity of rotor poles; and inspect and repair the upper guide bearing. Additional optional items could be exercised once the required work has progressed and identified other damage caused by contact of the stator to the rotor.

The Corps says it intends to award a firm fixed-price contract. It estimates the value of the work will range from $500,000 to $1 million.

The announcement is available on the Federal Business Opportunities Internet site, www.fbo.gov, by entering solicitation number W9127N09R0013 in the “Quick Search” box.

For information, contact Kenneth Piper, Corps of Engineers, Portland District, Contracting Division (CENWP-CT), P.O. Box 2946, Portland, OR 97208-2946; (1) 503-808-4619.

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