Risk Reduction by Automatic Seismic Shutoff
Publication: Practice Periodical on Structural Design and Construction
Volume 22, Issue 2
Abstract
Seismic shutoff devices are expected to automatically stop the flow of hazardous gases and liquids through distribution systems that may be damaged by earthquakes. There is some uncertainty in the actuation of these devices; they may actuate when not needed and they may not actuate when needed. Therefore, these devices can only reduce, and not eliminate, the risk of hazardous leaks. It is shown in this paper that shutoff devices can be deployed to meet specific performance goals in seismic design. A cost-benefit analysis is conducted to show that devices are most effective in reducing the risk to weak systems in highly seismic areas. The uncertainty in actuation diminishes the effectiveness of these devices.
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References
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 22 • Issue 2 • May 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Apr 1, 2016
Accepted: Aug 23, 2016
Published online: Sep 29, 2016
Discussion open until: Mar 1, 2017
Published in print: May 1, 2017
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