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Title: The 2010 Chilean earthquake: gas distribution system resilience
Category: Technical papers from the Journal of Pipeline Engineering
Downloadable: Yes 
Project No.:
Research Agency:
Catalog No.: 2210s
Date of Publication: Sep 1 2010 12:00AM
Price: $25.00 US
Authors: Enrique Acuna C
Abstract: THIS ARTICLE provides a quick review of the gas distribution pipeline systems’ behaviour during and after the Cobquecura earthquake; with an 8.8Mw1 magnitude, this was the fifthbiggest earthquake since 1900 and the seventh (by magnitude) ever recorded in human history.

Modern transmission and distribution piping systems endured the earthquake effects with no fatalities, serious injuries, or property damage related to gas pipe failures. Some marginal supply loss occurred due to customers’ decisions to cut-off the gas supply and some under-pressure-protection actuation. Gas service was restored within two to three weeks.

In the city of Concepcion and the port of Talcahuano, the area most affected by the Cobquecura earthquake and following tsunami, an old cast iron gas network collapsed because of earth settlement and subsequent flooding. On one hand, service restoration and cast iron pipe insertion took between 7 and 11 weeks to get maximum penetration; on the other hand, 97km were impossible to rehabilitate, and 500 customer services have had to be converted to LPG.

There are no available official figures and evaluation of the effect of the Cobquecura earthquake on gas transmission and distribution systems. Information is not available either from companies or authorities. The figues presented in this article are general information acquired from public sources and unofficialdiscussions, and are not from an official damage eport.

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