Horse Mesa Dam, Units 1 – 4 Intake Repairs
September , 2013
Global Diving & Salvage, Inc was contracted by Salt River Project (SRP), operator of Horse Mesa Dam, located 65 miles northeast of Phoenix, AZ, to provide project management and diving services to make repairs of Units 1 through 4. The work on Unit 4, located in 160 feet of water, and on Units 1, 2, and 3, located in 260 feet, necessitated the use of saturation divers.
Saturation diving is a method where divers live at a pressure equal to the depth they are working and transit to and from the work area via a diving bell. When not working, they live in chambers that are located on the deck of the barge. A crew of 21 working in two 12-hour shifts are required to support both the divers on deck and those in the water. In saturation diving, decompression is not eliminated; it is delayed until their rotation is over, which is usually 30 days. On this project, it took three days to decompress from the working depth to the surface.
9/7/13: (Arizona Republic)
8/29/13: (ENR Southwest)