Asset Management - Identification Prioritization of Capital Projects

摘要

The California State Water Project (SWP) is one of the largest water and power systems in the world. It conveys an average annual 2.4 million acre-feet of water to long-term water contractors through 17 pumping plants, 8 hydroelectric power plants (including 3 pumping-generating plants), 28 dams and reservoirs, and more than 660 miles of aqueducts and pipelines. The SWP is also the largest consumer and fourth largest producer of energy within California.The Department of Water Resources (DWR) is charged with managing, operating, and maintaining the SWP. With over 150 large hydros and associated supporting equipment to operate and maintain, DWR adopted an Asset Management Plan to permit high level proactive budgeting of all future SWP capital projects. Fundamental to DWR's Asset Management Plan was development and subsequent implementation of a Condition Assessment Program (CAP) to identify projects (2006). In 2007, DWR added a critical prioritization model to its asset management plan. This model consists of a risk analysis approach to prioritize all projects identified by the CAP.Consistent and regular condition assessment of SWP plant facilities allows for responsive action to ensure equipment health for an aging system (35 plus years of age) and enables DWR to operate and maintain the SWP at highest levels of operational availability (OA). High levels of OA are critical to DWR since California operates in the deregulated energy market (deregulated in 2001). Unscheduled or prolonged scheduled outages can result in lost opportunities for revenue and/or increased costs related to "on-peak" pumping.DWR's CAP has three primary objectives consisting of 1) long-term planning: objectively identify future SWP projects for proactive budgeting (1 to 5 year budget cycle), 2) medium-term: enable maintenance resources to embrace and move toward a Reliability Centered Maintenance philosophy, and 3) short-term: identify projects/equipment that may require immediate maintenance action.All CAP identified projects are prioritized by DWR's Risk Analysis model to determine when capital projects should be approved for proactive budgeting. Risk Analysis takes into account probability of equipment failure, equipment repair costs, and energy costs of an unscheduled outage to determine funding priority. High dollar consequence projects with a high probability of failure receive the highest funding priority. Dollar consequence is determined from the risk model while probability of failure is determined by the CAP. The CAP (implemented 2006) and Risk Analysis model (implemented 2007) are the two key features of DWR's Asset Management Plan.