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Renewable Energy Use on the Rise: Beyond Fossil Fuels

As the nation looks for alternative energy sources, valves and actuators stand to play a role in alternative applications such as solar, wind and geothermal.

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A Bright Future for Wireless Technology

Wireless technology provides an opportunity to save costs while expanding the amount of information available to help industry run its processes more productively and reliably.

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Exploring the Evolution of Non-Destructive Examination

A look back at how NDE came to be and how it has progressed shows how such testing came to be increasingly important.

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How to Increase Revenue in Gas-Lift Applications

In the gas lift process, using an integrated flow control system can increase productivity and lower costs. Here’s how that works.

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Are You Ready for the Unexpected? Valve Triage and Repair

Recovering from disasters such as fire and floods requires knowing when and how to repair and replace valves and actuators.

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Purging Gas Lines in All the Wrong Places
Written by Peter Cleaveland   
Thursday, 25 February 2010 22:27

explosionIt is important to make sure that gas supply lines contain nothing but gas before the equipment they feed is started. Unfortunately, there seems to have been little guidance or regulation on how this should be done, and sometimes the pipes are purged (in pipeline work the process is called blowdown) into the interior of a building. With all that gas around just a spark can blow the place up. The U.S. Chemical Safety Board (CSB) cites a number of explosions dating back to 1997 caused by improper purging - practices that were in most cases allowable under prevailing regulations.

One would think that the odorant added to natural gas would warn people when a problem is developing, but this is often unreliable, says the CSB. Senses of smell vary and fatigue, as well as a variety of things can interfere with perception, and new pipes and containers can react with or absorb the odorants in a process called odor fade.
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