COLUMBIA GAS TRANSMISSION, LLC — Corrective Action Order

case documentOfficial PDF420071017H_CAO_12192007.pdf#

case documentOfficial PDF420071017h_cao_12192007_text.pdf#

420071017H_Closure_01312011_text.pdf, page 1Official PDFCERTIFIED MAIL - RETURN RECEIPT REQUESTED January 31, 2011 Mr. Richard Keyser Vice President, Engineering NiSource Gas Transmission & Storage 5151 San Felipe, Suite 2500 Houston, TX 77056 CPF 4-2007-1017H Dear Mr. Keyser: On December 14, 2007, Columbia Gulf Transmission (Columbia Gulf) experienced a failure of its 30-inch natural gas pipeline near Delhi, LA. As a result of the incident the Pipeline and Hazardous Materials Administration (PHMSA) issued a Corrective Action Order (CAO), 4- 2007-1017H, dated December 19, 2007, requiring Columbia Gulf to take corrective actions with respect to its natural gas pipeline system. The cause of the failure was determined to be external corrosion and Columbia Gulf presented a plan of corrective measures designed to prevent additional in-service failures. Through field and records inspections over the past three years, PHMSA has determined that Columbia Gulf has substantially completed the requirements of the CAO. Consequently, PHMSA has closed the CAO, CPF 4-2007-1017H. Sincerely, R. M. Seeley Director, Southwest Region Pipeline and Hazardous Materials Safety Administration#