Encyclopedia of the oil crash: X is for X-ray pipeline inspection

X-RAY PIPELINE INSPECTION

Among TransCanada’s safety claims about its proposed Keystone XL pipeline is that they would inspect every single weld with a combination of X-ray and ultrasonic technology, helping to protect against leaks the human eye can’t detect, although critics have questioned the effectiveness of the technology. Sarah Barmak

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• Y is for yellow mountains, Yergin
• Z is for zero-discharge policy, Zama City
• A is for Alberta, Ali Al-Naimi