# EL PASO NATURAL GAS CO — Integrity Assurance Notification

- **operation:** document
- **citation:** PHMSA 25-329709
- **title:** EL PASO NATURAL GAS CO — Integrity Assurance Notification
- **source type:** inspection
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2024-12-27
- **effective on:** 2024-12-27
- **summary:** GAS TRANSMISSION in AZ; REASSESSMENT INTERVAL ABOVE 30% SMYS; PHMSA status: RESOLVED.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-leading-ian-25-329709-operator-4280.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-leading-ian-25-329709-operator-4280.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-leading-ian-25-329709-operator-4280
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/data_statistics/pipeline/SRCR_and_Integrity_Assurance_Notifications.zip
**body:**

Pursuant 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.
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- **body characters:** 1216