{"operation":"document","citation":"CPF 520081008W","title":"TUSCARORA GAS TRANSMISSION COMPANY — Warning Letter","source_type":"enforcement","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2008-12-03","effective_on":null,"summary":"CLOSED warning letter citing 192.199(g), 192.473(a), 192.735(a).","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-enforcement-520081008w.json","markdown":"https://regulus.evalyn.ai/document/phmsa-enforcement-520081008w.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-enforcement-520081008w","source_url":"https://primis.phmsa.dot.gov/enforcement-data/case/520081008W","body":"Warning Letter involving TUSCARORA GAS TRANSMISSION COMPANY. PHMSA's enforcement data identifies the cited regulations as 192.199(g),  192.473(a),  192.735(a). The case was opened on 2008-12-03 and is reported as closed as of 2008-12-03. Open the official case record for notices, responses, orders, and the latest status.\n\nOfficial case documents:\n\n520081008W_Warning Letter_12032008.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520081008W/520081008W_Warning%20Letter_12032008.pdf\n\n520081008w_warning letter_12032008_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520081008W/520081008w_warning%20letter_12032008_text.pdf\n\n520081008w_warning letter_12032008_text.pdf\n\nU. S, Department\nof Tf'GrisportQtlori\nPiipellmne and\nHazardovs Materiialls Safety\nAdmi1niistitahon\n12300 W Dakota Ave, Suite 110\nLakewood, CO 80228\nWA~IXG KKTTKR\nDecember 3, 2008\nMr Ross T. Parker\nRegional Director, US Operations\nTransCanada\n1400 SW 5\" Avenue, Suite 900\nPortland, OR 97201\nCPF 5-2008-1 0M&\nDear Mr Parker\nBetween March and June of 2008, a representative of the Pipehne and Hazardous Materials\nSafety Administration (PHMSA), pursuant to Chapter 601 of 49 United States Code, inspected\nyour Gas Transmission Northwest (GTN) and Tuscarora Pipeline Systems in the States of\nIdaho, Oregon, Cahfornia, and Nevada\nAs a result of the inspection, it appears that you have committed violations of the Pipehne\nSafety Regulations, Title 49, Code of Federal Regulations The items inspected and the\nprobable violations are\n\n\n\nAt the West Klamath tap, GTN utihzes \"worker\" and \"momtor\" regulators to control dehvery\npressure to the Avista Gas Company, a local distribution company There are two parallel runs\nof worker and monitor pressure regulators at the West Iklamath Tap At the time of mspection,\nthe pressure sensing hnes for all four regulators were installed mto one tap on the downstream\nlower pressure pipe hne Because a failure of the single tap would disable all pressure\nregulation, the described installation of the downstream pressure sensing hnes is a violation of\nSection 192 199(g)\nThe GTN and Tuscarora systems both have pipehne segments that parallel high-voltage power\nhnes These segments did have mitigation systems in place to reduce the harmful effects of\nmduced AC Voltage on the pipeline However, GTN and Tuscarora do not regularly monitor\nand record AC pipe-to-soil potentials (P/S) m these areas to ensure the AC mitigation systems\nwere effective\nDurnig the mspection of the Tuscarora system, our mspector witnessed and recorded the\nfollowing AC P/S readmgs on the mainhne. MP 147. 3 — 15. 8 Volts, MP 145 9 — 10 6 Volts, MP\n40 0 - 34 Volts, and MP 41 3 — 27 Volts For the GTN system, there was one area at MP 18 2 on\nthe Coyote lateral that revealed elevated AC Voltage readings at 10 Volts These voltage levels\nmdicate the presence of potentially damaging interference currents\n(a) Flammable or combustible materials in quantities beyond those required for\neveryday use, or othe&. than those normally used in conipressor buildings, must be\nsto~ed a safe distance from the compressor building.\nAt GTN's Bend compressor station, there were combustible box and pallet materials stored\ninside the compressor building These combustibles were not required for everyday use\nUnder 49 Umted States Code, ) 60122, you are subject to a civil penalty not to exceed $100, 000-\nfor each violation for each day the violation persists up to a maximum of $1, 000, 000 for any\nrelated series of violations We have reviewed the circumstances and supporting documents\nmvolved in this case, and have decided not to conduct additional enforcement action or penalty\nassessment proceedmgs at this time We advise you to correct the item(s) identified in this\nletter Failure to do so will result in TransCanada being subject to additional enforcement\nactloll\n\n\n\nNo reply to this letter is required If you choose to reply, in your correspondence please refer to\nCPF 5-2OO8-1OO8W. Be advised that all material you submit in response to this enforcement\naction is subject to bemg made publicly available If you beheve that any portion of your\nresponsive material quahfies for confidential treatment under 5 U S. C, 552(b), along with the\ncomplete original document you must provide a second copy of the document with the portions\nyou beheve quahfy for confidential treatment redacted and an explanation of why you believe\nthe redacted information quahfies for confidential treatment under 5 U S C 552(b)\nC is Hoidal\nDirector, Western Region\nPipehne and Hazardous Materials Safety Administration\ncc PHP-60 Comphance Registry\nPHP-500, C Allen (0120797, 0120800, 4121745)","truncated":false,"body_characters":4664}