EL PASO NATURAL GAS CO — Integrity Assurance Notification

REASSESSMENT INTERVAL ABOVE 30% SMYSPursuant to 49 C.F.R. §192.939(a) and §192.18, El Paso Natural Gas Company (EPNG), OPID 4280, requests an extension of the 7-calendar year reassessment interval for the pipeline segment noted below. The compliance date is 12/31/2024, and EPNG is requesting an extension to 2/28/2025. The EMAT ILI tool was originally ran on 7/12/2024; however, the DQA for the survey was recently rejected by the ILI Vendor, Rosen, on 12/18/2024 after having originally accepted the DQA on 07/26/2024. For this inspection, ROSEN configured the EMAT tool with an L10E sensor due to the presence of heavy wall pipe (= 0.500” wall thickness). During data analysis of the EMAT recorded data, increased signal levels were observed throughout most of the inspection, affecting wall thicknesses < 0.500”. ROSEN informed us that their automated feature search returned too large of a feature count (which are mostly due to coating reflections) and cannot be managed through their analysis process. As a result, the EMAT tool will need to be re-run with an L10 sensor to assess the thinner wall pipe sections. The re-run is currently scheduled for late January; however, we are asking for the end of February to account for unforeseen delays.#