Failure of Riveted and Forge-Welded Penstock

by Charles J. Trenkle, (M.ASCE), Civ. Engr.; Southern California Edison Co., Rosemead, Calif.,

Serial Information: Journal of the Energy Division, 1979, Vol. 105, Issue 1, Pg. 93-102

Document Type: Journal Paper

Abstract: This paper describes the failure and repair of a 1920's vintage 78-in. (198-cm) diam, 1-1/4-in. (3.18-cm) thick riveted and forge-welded penstock. The failure occurred at a metallurgical discontinuity located in a forge-welded joint when the turbine shut-off valve swung closed in less than 3 sec.

Subject Headings: Failure analysis | Rivets | Conduits | Structural failures | Discontinuities | Joints | Turbines | Valves |

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