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<br />State of Wyoming 1268-DR-WY <br />Hazard Mitigation Survey Team Report <br /> <br />Recommendations <br /> <br />ISSUE: <br /> <br />Improve overhead power lines <br /> <br />BACKGROUND: <br /> <br />Storm damaged overhead power lines can be repaired and replaced <br />with stronger structures, more (Please see Page 20 for definitions <br />of technical terms) deadend structures and stronger conductors. <br />New and improved technologies offer a wider variety of options <br />for storm damaged overhead lines. Each utility should consider <br />the cost/benefit and effectiveness of each mitigation measure to <br />ensure overall strength of their power line system. <br /> <br />RECOMMENDATIONS: Deadend Structures <br /> <br />Provide additional deadend structures into the design. This will <br />increase the reliability of the system. <br /> <br />Use stronger guy wires and stronger hardware with through-bolts <br />when securing power poles. Guy wires are typically attached on <br />deadend structures. Guys could also be added to other structures <br />not originally designed as deadend structures. <br /> <br />Assure that hardware and guys are not loose on existing structures. <br /> <br />Use PVC covered power anchors when securing guy wires. Power <br />anchors provide a stronger tie to the surrounding materials than <br />expanding anchors. PVC covering provides added protection from <br />corrosion. <br /> <br />Use anchor anodes to stop electrical interactions in highly <br />corrosive areas. <br /> <br />Use light duty steel poles for deadend poles to increase the <br />reliability of the system with minimum cost. <br /> <br />Increase Structure Strength <br /> <br />Use stronger, larger diameter poles or poles made from alternate <br />materials such as steel or laminate that exhibit stronger strength <br />and longevity. Typically, cedar poles last longer than other wood <br />species. <br /> <br />10 <br />