Cholla Power Plant

Joseph City, AZ


Arizona Public Service Company



Arizona Public Service Company (APS) chose SGH to perform a condition assessment and develop repairs for the circulating water pipelines at the Cholla Power Plant. The coal-fired power plant, co-owned and operated by APS, has four units, three of which include 66 in. and 72 in. diameter prestressed concrete cylinder pipe (PCCP) in their circulating water pipelines. The pipelines have been in service for thirty to fifty years and exhibited a high level of distress due to breaks in prestressing wires.