Assessment of Centerville powerhouse penstocks
- Pacific Gas & Electric Co., San Francisco, CA (United States)
- Structural Integrity Associates, Inc., San Jose, CA (United States); and others
Pacific Gas & Electric Company (PG&E) has performed an assessment of the Centerville Powerhouse penstocks to determine their acceptability for continued long term service throughout the remaining 20 years of the project license. Preliminary penstock investigations were aimed at determining continued short term serviceability (5 years) through the end of construction of a new Centerville plant. Based on project economics, PG&E evaluated cancelling construction of the new plant and continuing operation of the existing Centerville Powerhouse. The preliminary studies were determined to be of insufficient detail for judging the penstocks` fitness for continued long term operation. Therefore, PG&E embarked upon a more detailed study. The acceptability of the Centerville penstocks for long term continued operation hinged mainly on the performance and reliability of the powerhouse control equipment and its ability to limit pressure rises, the material properties of the penstock shell, and the extent of erosion/corrosion and pitting within the penstock walls.
- OSTI ID:
- 219980
- Report Number(s):
- CONF-9507190--
- Country of Publication:
- United States
- Language:
- English
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