NEHRP Clearinghouse
- Title
- Pipeline Replacement Feasibility Study: A Methodology for Minimizing Seismic and Corrosion Risks to Underground Natural Gas Pipelines.
- File
- PB95252326.pdf
- Author(s)
- Eguchi, R. T.; Seligson, H. A.; Honegger, D. G.
- Source
- National Science Foundation, Arlington, VA.; New York State Science and Technology Foundation, Albany.; Southern California Gas Co., Los Angeles., March 2, 1995, 124 p.
- Identifying Number(s)
- NCEER-95-0005
- Abstract
- This report presents a methodology which a utility can use to fold mitigation for seismic hazards into its ongoing repair and replacement program. The methodology was developed specifically for buried pipeline components within the Southern California Gas Company (SoCalGas) system. Both transmission and distribution pipeline systems are considered; however, suggested procedures differ, due in part to the importance and relative lack of redundancy (i.e., interconnectedness) for transmission pipe. The new methodology incorporates potential seismic damage as characterized by areas of potential ground failure. As part of this effort, a new procedure for estimating corrosion leakage rates in 'data-poor' areas is proposed.
- Keywords
- ; Corrosion environments; Replacing; Risk analysis; Cost benefit analysis; Repairs; Natural gas distribution systems; Corrosion prevention; Retrofitting; Earthquake damage; Leakage; Gas pipelines; Cracks; Seismic effects; Underground corrosion; Maintenance; Earthquake resistance; Earthquake engineering; Underground pipelines