{"operation":"document","citation":"PHMSA-2008-0158","title":"Texas Gas Transmission Company — Pipeline Special Permit","source_type":"permit","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":"2019-09-19","effective_on":"2019-09-19","summary":"PHMSA-2008-0158, issued 2019-09-19 for Texas Gas Transmission Company's gas transmission system.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-special-permit-phmsa-2008-0158.json","markdown":"https://regulus.evalyn.ai/document/phmsa-special-permit-phmsa-2008-0158.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-special-permit-phmsa-2008-0158","source_url":"https://www.regulations.gov/docket/PHMSA-2008-0158","body":"PHMSA pipeline special permit PHMSA-2008-0158. Operator: Texas Gas Transmission Company. System: Gas Transmission. Issue date: 2019-09-19.\n\n<<<PAGE 1>>>\n\nof Transportation\nU.S. Department\nSEP\n19 2019\n1200 New Jersey Avenue, SE\nMaterials Safety\nPipeline and Hazardous\nWashington, D.C. 20590\nAdministration\nMr. Tony Rizk\nVice President, Technical Services\nTexas Gas Transmission Company\n9 Greenway Plaza, Suite 2800\nHouston, TX 77046\nDocket No. PHMSA-2008-0158\nDear Mr. Rizk:\nOn May 14, 2019, Texas Gas Transmission LLC (TXGT) requested the Pipeline and Hazardous\nMaterials Safety Administration (PHMSA) to extend the segments in special permit\nPHMSA-2008-0158 by 1,123 feet, and 1,145 feet respectively for the TXT's 20-inch diameter\npipeline EUT Line 20-1 and the 26-inch diameter pipeline EUT 26-1. This existing special\npermit waives compliance from the 49 Code of Federal Regulations (CFR) 192.611(a) for two\n(2) natural gas transmission pipelines located in Iberia Parish, Louisiana. 49 CFR 192.611(a)\nrequires natural gas pipeline operators to confirm or revise the maximum allowable operating\npressure of a pipeline segment after a change in class location.\nAfter reviewing your application materials, the technical and safety issues involved, and the\nperformance of TXT under the special permit, PHMSA is granting your request for an\nextension of the special permit segments, provided the special permit conditions are met.\nMy staff would be pleased to discuss this matter or any other regulatory matter with you.\nSentho White, Director of PHMSA Engineering and Research Division, may be contacted at\n202-366-2415, on technical matters specific to this special permit segment extension. James\nmatters specific to this special permit segment extension.\nUrisko, Director of PHMSA Southern Region, may be contacted at 404-832-1150, on operational\nSincerely,\nlan K. Mayberry Y\nAssociate Administrator for Pipeline Safety\nEnclosure: Special Permit - PHMSA-2008-0158\n\n<<<PAGE 1>>>\n\nU.S. DEPARTMENT OF TRANSPORTATION\nPIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION\nSPECIAL PERMIT- Class 1 to 3\nSpecial Permit Segments- Extension\nSpecial Permit Information:\nDocket Number:\nRequested By:\nOperator ID#:\nOriginal Date Requested:\nOriginal Issuance Date:\nSegment Modification Request: Effective Dates: Code Section(s):\nPHMSA-2008-0158\nTexas Gas Transmission, LLC\n19270\nMay16, 2008\nFebruary 27, 2009\nMay 14, 2019\nSeptember 19, 2019 to September 19, 2029\n49 CFR 192.611(a)\nGrant of Special Permit:\nThe Pipeline and Hazardous Materials Safety Administration (PHMSA) grants an extension of\nthis special permit to Texas Gas Transmission LLC (TXGT) waiving compliance from 49 Code\nof Federal Regulations (CFR) 192.6 11(a) for two (2) natural gas transmission pipelines located\nin Iberia Parish,Louisiana. The Federal Pipeline Safety Regulations in 49 CFR 192.611(a)\nrequire natural gas pipeline operators to confirm or revise the maximum allowable operating\npressure (MAOP) of a pipeline segment after a change in class location.\nThe original special permit (Docket No. PHMSA-2008-0158) was granted on February 27, 2009.\nThis special permit modification extends specialpermit segment 1 on EUT Line 20-1 by 1,123\nfeet and specialpermit segment 2 on BUT Line 26-1 by 1,145 feet. Condition 26 of the original\nspecial permit allows PHMSA to extend the existing specialpermit segments to include\ncontiguous segments under certain circumstances.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 1 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 2>>>\n\nSpecial Permit Segments and Inspection Areas:\nIberia Parish, Louisiana\nPHMSA waives compliance from 49 CFR 192.611(a) for two (2) natural gas transmission\npipeline segments on the EUT Lines 20-1 and 26-1 pipelines located in Iberia Parish, Louisiana,\nwhere a change has occurred from a Class 1 to a Class 3 location. This special permit allows\nTXGT to continue to operate each specialpermit segment at its current maximum allowable\noperating pressure (MAUP) of 1052 pounds per square inch gauge sig) for the 20-inch\ndiameter pipeline EUT Line 20-1 and MAUP of 1080 psig for the 26-inch diameter pipeline\nBUT Line 26-1.\nThis special permit applies to the specialpermit segments' defined using the TXGT mile post\n(MP) references as follows\nSpecialpermit segment 1- EUT Line 20-1- 1805 feet, MP 50+3236 to MP 50+504 1.2\nSpecialpermit segment 2- EUT Line 26-1- 1859 feet, MP 50+3222 to MP 50+5081.\nThis special permit applies to the specialpermit inspection areas defined using the TXGT mile\npost references as follows:\nEUT special permit inspection areas-means the area that extends 220 yards on each side of the\ncenterline along the entire length of the BUT Lines 20-1 and 26-1 pipelines as follows:\n¯ Specialpermit inspection area 1- EUT Line 20-1- MP 40+0505 to MP 75+503 1\n¯ Specialpermit inspection area 2- EUT Line 26-1- MP 40+0505 to MP 75+5023\nThe specialpermit inspection areas are in Lafayette, Vermillion, Theria, and St. Mary Parishes,\nLouisiana. The specialpermit inspection areas start upstream of the Morgan City Compressor\nStation and terminate at the Youngsville Compressor Station for 35.8 miles.\nPHMSA grants this special permit based on the findings set forth in the \"Special Permit Analysis\nand Findings\" document, which can be read in its entirety in Docket No. PHMSA-2008-0158 in\n1 Specialpermit segment(s) refer to either or both specialpermit segment 1 and specialpermit segment 2.\n2 The original special permit segment 1 was defined in the original special permit using TXGT mile post\nreferences: EUT Line 20-1-682 feet, MP 50+4349 to MP 50+5031.\nThe original special permit segment 2 was defined in the original special permit using TXGT mile post\nreferences: EUT Line 26-1-714 feet, MP 50+4309 to MP 50+5023.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 2 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 3>>>\n\nthe Federal Docket Management System (FDMS) located on the internet at www.Regulations.gov.\nConditions:\nPHMSA grants this special permit subject to the following conditions:\n1) TXGT must continue to operate the specialpermit segments at or below their existing\nMAOP as follows: EUT Line 20-1- MAOP 1052 psig; and EUT Line 26-1- MAOP 1080\npsig.\n2) TXGT must incorporate the specialpermit segments into its written integrity management\nprogram (IMP) as a \"covered segment\" in a \"high consequence area (HCA)\" per 49 CFR\n192.903, except for the reporting requirements contained in 49 CFR 192.945. TXGT need\nnot include the specialpermit segments described in this special permit into its IMP baseline\nassessment plan unless those areas meet the conditions of an HCA per 49 CFR 192.905.\n3) TXGT must perform a close interval survey (CIS) of the EUT Line 20-1 and EUT Line 26-1\npipelines along the entire length of all specialpermit inspection areas not later than one (1)\nyear after the grant of this special permit and remediate any areas of inadequate cathodic\nprotection. A CIS and remediation need not be performed if TXGT has performed a CIS and\nremediation on the EUT Line 20-1 and EUT Line 26-1 pipelines along the entire length of all\nspecialpermit inspection areas less than four (4) years prior to the grant of this special\npermit. If factors beyond TXGT's control prevent the completion of the CIS and remediation\nwithin one (1) year, a CIS and remediation must be completed as soon as practicable and a\nletter justifying the delay and providing the anticipated date of completion must be submitted\nto the Director, PHMSA Southern Region4 not later than one (1) year after the grant of this\nspecial permit.\nPHMSA Note:5 TXGT reported that a CIS was conducted for the special permit\ninspection areas in 2018. No pipeline coating areas were found out of criteria due to\ninadequate cathodic protection that required remediation.\n' If PHMSA changes the region that is responsible for this TXGT special permit, the Director, PHMSA Southern\nRegion will instruct TXGT on the appropriate PHMSA Region Director to contact for the reporting requirements\nof this special permit.\n\"PHMSA Note\" is to document information provided by TXGT for specialpermit segments 1 and 2 extensions.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 3 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 4>>>\n\n4) TXGT must perform a periodic CIS of the specialpermit segments at the applicable\nreassessment interval(s) for a \"covered segment\" determined in concert and data integrated\nwith in-line inspection (ILl) in accordance with 49 CFR 192 Subpart 0 reassessment\nintervals as contained in 49 CFR 192.937 (a) and (b) and 192.939.\n5) TXGT must perform a Direct Current Voltage Gradient (DCVG) survey or an Alternating\nCurrent Voltage Gradient (ACVG) survey of each specialpermit segment not later than one\n(1) year after the grant of this special permit to verify the pipeline coating conditions and to\nremediate any integrity issues in the specialpermit segments. A DCVG or ACVG survey\nand remediation need not be performed on specialpermit segments, if TXGT has performed\na DCVG or ACVG survey and conducted remediation on the EUT Line 20-1 and BUT Line\n26-1 pipelines along the entire length of all specialpermit inspection areas less than four (4)\nyears prior to the grant of this special permit. TXGT must remediate any damaged coating\nindications found during these assessments that are classified as moderate (i.e. 35% JR and\nabove for DCVG or 50 dBtV and above for ACVG) or severe based on NACE International\nRecommended Practice 0502-2002, \"Pipeline External Corrosion DirectAssessment\nMethodology \", (NACE RP 0502-2002). A minimum of two (2) coating survey assessment\nclassifications must be excavated, classified and/or remediated per each survey crew each\ntime the survey is performed. If factors beyond TXGT's control prevent the completion of\nthe DCVG or ACVG survey and remediation within one (1) year, a DCVG or ACVG survey\nand remediation must be performed as soon as practicable and a letter justifying the delay\nand providing the anticipated date of completion must be submitted to the Director, PHMSA\nSouthern Region not later than one (1) year after the grant of this special permit.\n¯ TXGT must conduct DCVG surveys and remediation by September 30, 2020, for the\nnew special permit segments.6\n¯ PHMSA Note: DCVG surveys were performed in the special permit segments in\n2009 for the original issuance of the special permit in 2009:\no On August 18, 2009, two (2) DCVG investigation digs were performed on the\nBUT Line 20-1. One (1) excavation was performed at MP 50+4368 for a 3% JR\nDCVG defect. The other excavation was performed at MP 50+4777. The\n6 Surveys, tests, and remediation that are specified as one (1) year throughout this special permit will have the later\nof one (1) yearafter the special permit renewal grant date or until September 30, 2020 for TXGT to complete for\nthe new specialpermit segments extension footage.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 4 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 5>>>\n\ncoating defects were confirmed, and the pipes were recoated and backfihled at\nboth excavations.\no On August 19, 2009, two (2) DCVG investigation digs were performed on the\nEUT Line 26-1. One (1) excavation was at MP 50+5030 where a 5% JR DCVG\ncoating defect was confirmed, excavated, and repaired. At MP 50+5 139 another\n5% DCVG defect was excavated and repaired.\n6) TXGT must evaluate the EUT Line 20-1 and EUT Line 26-1 pipelines for stress corrosion\ncracking (SCC) as follows:\na) TXGT must perform a stress corrosion cracking direct assessment (SCCDA) or other\nappropriate assessment method for SCC [such as pressure test or ILl with a crack\ndetection tool] of the BUT Line 20-1 and BUT Line 26-1 pipelines along the entire\nlength of the specialpermit inspection areas according to the requirements of 49\nCFR 192.929 and/or NACE RP 0204-2008 not later than one (1) year after the grant\nof this special permit. The SCCDA or other approved method must address both high\npH SCC and near neutral pH SCC. An SCCDA need not be performed if TXGT has\nperformed an SCCDA of the BUT Line 20-1 and EUT Line 26-1 pipelines along the\nentire length of the specialpermit inspection areas less than four (4) years prior to\nthe grant of this special permit. If factors beyond TXGT' s control prevent the\ncompletion of the SCCDA survey and remediation within one (1) year, an SCCDA\nand remediation must be performed as soon as practicable and a letter justifying the\ndelay and providing the anticipated date of completion must be submitted to the\nDirector, PHMSA Southern Region not later than one (1) year after the grant of this\nspecial permit. TXGT may eliminate this Condition 6(a), provided TXGT provides\nan engineering assessment showing that the pipeline does not meet any of the criteria\nfor both near neutral and high pH SCC per the applicable edition of the American\nSociety of Mechanical Engineers Standard B31.8S, \"Managing System Integrity of\nGas Pipelines\" (ASME B31.8S) Appendix A3, or NACE 0204 -2008, \"Stress\nCorrosion Cracking (SCC) Direct Assessment Methodology \", Sections 1.2.1.1 and\n1.2.2.\nb) If the threat of SCC exists as determined in Condition 6(a), and when the TXGT\nBUT Line 20-1 and BUT Line 26-1 pipelines are exposed for any reason to comply\nwith the special permit and integrity management activities in the specialpermit\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 5 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 6>>>\n\n7) inspection areas and the coating has been identified as poor during the pipeline\nexamination, then TXGT must directly examine the pipe for SCC using an accepted\nindustry detection practice such as dry or wet magnetic particle tests. Poor coating is\na coating that has become damaged and is losing adhesion to the pipe which is shown.\nby falling off the pipe, is porous, has pin holes, and/or shields the cathodic protection.\nVisual inspection is not sufficient to determine 'poor coating'; it is expected that a\nholiday detection test at the correct voltage will be performed. TXGT must keep\ncoating records at all excavation locations in the specialpermit inspection areas to\ndemonstrate the coating condition.\n. PHMSA Note: SCCDA was performed in the special permit segments in 2016 by\nexcavating both EUT Line 20-1 and EUT Line 26-1 pipelines. During the prescribed\nexaminations and validation excavations, no SCC was discovered along the entire\nlength of the specialpermit inspection areas. TXGT must conduct a new 5CC\nassessment for the special permit segments by September 30, 2020, see Condition\n23. TXGT will use pressure testing for assessment of the SCC threat in the special\npermit segments.\nTXGT must submit the DCVG or ACVG, CIS and SCCDA {or other approved methods of\ndetermining SCC] findings including remediation actions in a written report to the Director,\nPHMSA Southern Region, not later than two (2) years after the grant of this special permit.\n8) TXGT must amend applicable sections of its operations and maintenance (O&M) manual(s)\nto incorporate the inspection and reassessment intervals by in-line inspection (ILl) including\nboth metal loss and geometry tools of the EUT Line 20-1 and EUT Line 26-1 pipelines along\nthe entire length of the specialpermit inspection areas at a frequency consistent with\n49'CFR Part 192, Subpart 0.\n9) TXGT must amend applicable sections of its 0&M manual(s) to incorporate the inspection\nand reassessment intervals by CIS of the EUT Line 20-1 and BUT Line 26-1 pipelines\nspecial permit segments at a frequency consistent with 49 CFR Part 192, Subpart 0.\n10) The assessments of the BUT Line 20-1 and BUT Line 26-1 pipelines along the entire length\nof the specialpermit inspection areas using ILl must conform to the required maximum\nreassessment intervals specified in 49 CFR 192.939.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 6 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 7>>>\n\n11) TXGT must schedule future reassessment dates for the BUT Line 20-1 and BUT Line 26-1\npipelines along the entire length of the specialpermit inspection areas according to 49 CFR\n192.939 by adding the required time interval to the previous assessment date.\n12) TXGT must ensure its damage prevention program incorporates the applicable best practices\nof the Common Ground Alliance (CGA) within the specialpermit inspection areas.\n13) TXGT must give a minimum of 14-day notice to the Director, PHMSA Southern Region to\nenable him/her to observe the excavations relating to Conditions 5, 6b, 19, 20, 21, 22 and 23\nof field activities in the specialpermit inspection areas. Immediate response conditions do\nnot require a 14-day notice, but the PHMSA Southern Region Director should be noticed by\nTXGT no later than two (2) business days after the immediate condition is discovered.\n14) TXGT must not let this special permit impact or defer any of the operator's assessments for\nHCAs under 49 CFR Part 192, Subpart 0.\n15) Within three (3) months following the grant of this special permit and annually7 thereafter,\nTXGT must provide an annual report of the following to the Director, PHMSA Southern\nRegion and a copy placed on Docket PHMSA-2008-0158 at www.regulations.gov.\na) In the first annual report, TXGT should describe the economic benefits of the special\npermit extension including both the costs avoided from not replacing the pipe and the\nadded costs of the inspection program. Subsequent annual reports should address any\nchanges to these economic benefits.\nb) The number of new residences, other structures intended for human occupancy and\npublic gathering areas built within the specialpermit inspection areas.\nc) Any new integrity threats identified during the previous year and the results of any ILl or\ndirect assessments performed (including any un-remediated anomalies over 30% wall\nloss, cracking found in the pipe body, weld seam or girth welds, and dents with metal\nloss, cracking or stress riser) during the previous year in the specialpermit segments\nincluding their survey station, failure pressure ratio, anomaly depth and length, class\nlocation and whether they are in an HCA.\nAnnual reports must be received by PHMSA by the last day of the month in which the special permit is granted.\nFor example, the annual report for a special permit granted on May 15, 2009, must be received by PHMSA no\nlater than May 31 each year beginning in 2009.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 7 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 8>>>\n\nd) e) Any reportable incident, any leak normally indicated on the DOT Annual Report and all\nrepairs on the pipeline that occurred during the previous year in the specialpermit\ninspection areas.\nAny on-going damage prevention initiatives affecting the special permit inspection areas\nand a discussion of the success of the initiatives.\nf) Any mergers, acquisitions, transfer of assets, or other events affecting the regulatory\nresponsibility of the company operating the pipeline.\n16) At least one (1) cathodic protection (CP) pipe-to-soil test station must be located within each\nHCA with a maximum spacing between test stations of one-half mile within an HCA. In\ncases where obstructions or restricted areas prevent test station placement, the test station\nmust be placed in the closest practical location. This requirement applies to any HCA within\nthe specialpermit inspection areas.\n17) If any annual CP test station readings on the EUT Line 20-1 and EUT Line 26-1 pipelines\nwithin the specialpermit inspection areas fall below 49 CFR Part 192, Subpart I\nrequirements, remediation must occur within six (6) months and include a CIS on each side\nof the affected test station to the next test station and any identified corrosion system\nmodifications to ensure corrosion control. If factors beyond TXGT' s control prevent the\ncompletion of remediation within six (6) months, remediation must be completed as soon as\npracticable and a letter justifying the delay and providing the anticipated date of completion\nmust be submitted to the Director, PHMSA Southern Region no later than the end of the six\n(6) month completion date.\n18) Interference Currents Control: Control of induced AC from parallel electric transmission\nlines and other interference issues in the specialpermit inspection areas, that may affect the\npipeline must be incorporated into the operations of the pipeline and addressed. An induced\nAC program to protect the pipeline from corrosion caused by stray currents must be in place\nwithin one year of the date of this special permit.\n¯ PHMSA Note: TXGT reports that based upon the original application and latest\nimagery there are no major electric transmission powerlines in the specialpermit\ninspection areas right of way. AC survey was conducted in 2010; no interference\nissues were found in the specialpermit inspection areas.\n19) Field Coating: The coatings used on the pipeline and girth weld joints in the specialpermit\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 8 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 9>>>\n\nsegments must be non-shielding to CP. If the coating type is unknown or is known to shield\nCP for girth weld joints, then TXGT must take special care to:\na) Analyze ILl logs in the areas of girth welds for potential corrosion indications.\nb) Any ILl corrosion indications above 30% wall loss at girth welds where the coating type\nis unknown or is known to shield CP, girth weld joints must be exposed and evaluated\neach time the ILl is run or until the girth weld coating is replaced.\nc) A minimum of two (2) girth weld joints at locations most likely to have shielding and\ncorrosion shall be exposed and evaluated each time ILl is run. If corrosion is found, the\nnext most likely joint is to be exposed and evaluated until no corrosion is found.\n20) Anomaly Evaluation and Repair:\na) General: TXGT must account for ILl tool tolerance8'9and corrosion growth rates in\nscheduled response times and repairs, and document and justify the values used.\nb) Dents: TXGT must repair dents to the EUT Line 20-1 and EUT Line 26-1 pipelines in\nthe specialpermit inspection areas in accordance with 49 CFR 192.933 repair criteria.\nSpecialpermit inspection areas must have a geometry tool inspection as part of the\ninitial ILl. The geometry tool can be from past ILl inspections. The timing for these dent\nrepairs should follow TXGT's O&M Manual but must not be longer than one (1) year\nafter discovery.\n8 ILl tool calibration excavations may include previously excavated anomalies or recent anomaly excavations with\nknown dimensions that were field measured for length, depth, and width, externally re-coated, CP maintained, and\ndocumented for ILl calibrations prior to the ILl tool run. ILl tool calibrations must use ILl tool run results and\nanomaly calibrations from either the specialpermit inspection areas or from the complete ILl tool run segment, if\nthe continuous ILl segment is longer than the special permit inspection areas. A minimum of four (4) calibration\nexcavations must be used for unity plots.\nNote: Other known and documented pipeline features that are appropriate for the type ILl tool used may be used\nas calibration excavations for ILl tool calibration with technical documentation of their validity. To use other\nknown and documented pipeline features as calibration excavations for ILl tool calibration TXGT must complete\nboth of the following: (1) submit a plan for using known and documented pipeline features as calibration\nexcavations to, and receive a \"No Objection\" from, the Director, PHMSA Southern Region prior to performing\nthe ILl tool calibration using pipeline features. PHMSA must reply to TXGT within 90-days of TXGT's request.\nThe plan must include at least the following information: reason that known and documented pipeline features\nwill be used in place of anomalies on the pipelines; the pipeline features that will be used for the ILl tool\ncalibration, and the technical justification for using the pipeline features for ILl tool calibration. (2) submit a\nreport to the Director, PHMSA Southern Region and the Director, PHMSA Engineering and Research Division\nwith the results of the use of pipeline features for the ILl tool calibration that includes technical documentation\nestablishing the validity of using the pipeline features for the ILl tool calibration. TXGT must submit the report\nto PHMSA within 90-days after completion of the ILl tool calibration.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 9 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 10>>>\n\nc) Repair Criteria: Repair criteria apply to anomalies located on the EUT Line 20-1 and\nEUT Line 26-1 pipelines within the specialpermit inspection areas when they have been\nexcavated and investigated in accordance with 49 CFR 192.485 and 192.933 as follows:\ni) Specialpermit segments- Repair any anomaly that meets either: (1) a failure\npressure ratio (FPR) less than or equal to 1.39 for original Class 1 location pipe in a\nClass 3 location operating up to 72% of the specified minimum yield strength\n(SMYS); (2) an anomaly depth greater than 40% of pipe wall thickness.\nii) Special permit inspection areas- Anomaly evaluations and repairs in the special\npermit inspection areas must be performed in accordance with 49 CFR 192.485 and\n192.111 incorporating appropriate class location design factors, except HCAs outside\nof the specialpermit segments may be repaired in accordance with 49 CFR 192.933.\niii) Specialpermit inspection areas- the response time must be in accordance with 49\nCFR Part 192, Subpart 0, the applicable edition of the American Society of\nMechanical Engineers Standard B31.8S, \"Managing System Integrity ofGas\nPipelines\" (ASME B31.8S) and TXGT's Integrity Management Program.\nd) Response Time for ILl Results: The following guidelines provide the required timing for\nexcavation and investigation of anomalies based on ILl results. Reassessment by ILl will\n\"reset\" the timing for anomalies not already investigated and/or repaired. TXGT must\nevaluate ILI data by using either the ASME Standard B31G, \"Manual for Determining\nthe Remaining Strength ofCorroded Pzpelines\" (ASME B3 1 G), the modified B3 1 G\n(0.85dL) or R-STRENG for calculating the predicted FPR to determine anomaly\nresponses.\ni) Specialpermit segments:\n- Immediate response: Any anomaly within a specialpermit segment operating up\nto 72% SMYS that meets either: (1) an FPR equal to or less than 1.1; or (2) an\nanomaly depth equal to or greater than 80% wall thickness loss.\n- One-year response: Any anomaly within a special permit segment with original\nClass 1 location pipe in a Class 3 location operating up to 72% SMYS that meets\neither: (1) an FPR equal to or less than 1.39; or (2) an anomaly depth equal to or\ngreater than 40% wall thickness loss.\n- Monitored response: Any anomaly within a specialpermit segment with original\nClass 1 location pipe in a Class 3 location operating up to 72% SMYS that meets\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 10 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 11>>>\n\nboth: (1) an FPR greater than 1.39; and (2) an anomaly depth less than 40% wall\nthickness loss. The schedule for the response must take tool tolerance and\ncorrosion growth rates into account.\nii) Specialpermit inspection areas: The response time must be in accordance with\n49 CFR Part 192, Subpart 0, or TXGT's Integrity Management Program, which ever\nis shorter. Anomaly evaluations and repairs must be performed in accordance with 49\nCFR 192.485 and 192.111 incorporating appropriate class location design factors,\nexcept HCA's outside of the specialpermit segments may be repaired in accordance\nwith 49 CFR 192.933.\n. PHMSA Note: In 2014, TXGT performed ILl along the entire length of the special\npermit inspection areas:\na Eight (8) anomalies were excavated on EUT 20-1 in the specialpermit\ninspection areas. One anomaly was repaired with a sleeve, and the other\nseven (7) anomalies were removed by replacing the pipes. No anomalies\nwere found in the specialpermit segments.\na Three (3)anomalies were excavated on EUT 26-1 in the special permit\ninspection areas. Two (2) anomalies were repaired with a sleeve, and the\npipe at the other anomaly was recoated. No anomalies were found in the\nspecial permit segments.\na TXGT will perform ILl on EUT 20-1 in the special permit inspection areas\nfrom Youngsville to Berwick Header by August 3, 2021, and will perform ILl\non EUT 26-1 in the special permit inspection areas from Youngsville to\nMorgan City by October 21, 2021\n21) TXGT must provide records to PHMSA to demonstrate the girth welds on the EUT Line 20-\n1 and EUT Line 26-1 pipelines were nondestructively tested at the time of construction in\naccordance with:\na) The Federal pipeline safety regulations at the time the pipelines were constructed or at\nleast. 1% of the girth welds in each specialpermit segment were non-destructively tested\nafter construction but prior to the application for this special permit provided at least two\ngirth welds in each special permit segment were excavated and inspected.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 11 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 12>>>\n\nb) If TXGT cannot provide girth weld records to PHMSA to demonstrate either of the above\nin Condition 21(a), TXGT must accomplish either (i) or ((ii) and (iii)) of the following:\ni) Certify to PHMSA in writing that there have been no in-service leaks or breaks in\nthe girth welds on the EUT Line 20-1 and EUT Line 26-1 pipelines within the\nentire specialpermit inspection areas for the entire life of the pipelines, or\nii) Evaluate the terrain along the special permit segments for threats to girth weld\nintegrity from soil or settlement stresses and remediate all such integrity threats;\nand\niii) Excavate10, visually inspect and nondestructively test at least two girth welds on\nthe BUT Line 20-1 and EUT Line 26-1 pipelines in each specialpermit segment\nin accordance with the American Petroleum Institute Standard 1104, \"Welding of\nPipelines and Related Facilities\" (API 1104) as follows:\nA. Use the edition of API 1104 current at the time the pipelines were constructed;\nor\nB. Use the edition of API 1104 recognized in the Federal pipeline safety\nregulations at the time the pipelines were constructed; or\nC. Use the edition of API 1104 currently recognized in the Federal pipeline\nsafety regulations.\nc) If any girth weld in any of the specialpermit segments is found unacceptable in\naccordance with API 1104, TXGT must repair the girth weld immediately and then\nprepare an inspection and remediation plan for all remaining girth welds in the special\npermit segments based upon the repair findings and the threat to the specialpermit\nsegments. TXGT must submit the inspection and remediation plan to the Director,\nPHMSA Southern Region and remediate girth welds in the special permit segments in\naccordance with the inspection and remediation plan within 60 days of finding girth\nwelds that do not meet this Condition 21(c).\nd) Additionally, all oxy-acetylene girth welds, mechanical couplings and wrinkle bends in\nspecialpermit segments must be removed.\n10 TXGT must evaluate for SCC any time the EUT Lines 20-1 and 26-1 pipelines are uncovered in accordance with\nCondition 6(b) of this special permit.\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 12 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 13>>>\n\ne) TXGT must complete the girth weld testing, and the girth weld inspection and\nremediation plan, within six (6) months after the grant of this special permit. If factors\nbeyond TXGT's control prevent the completion of these tasks within six (6) months, the\ntasks must be completed as soon as practicable and a letter justifying the delay and\nproviding the anticipated date of completion must be submitted to the Director, PHMSA\nSouthern Region not later than six (6) months after the grant of this special permit.\n. PHMSA Note: TXGT performed X-ray examinations on the EUT Line 20-1 at\nMP 50+4368 and MP 50+4777 and on the EUT Line 26-1 at MP 50+5030 and\nMP 50+5139 on August 24, 2009. All welds passed evaluation. There have been\nno in-service leaks or breaks in the girth welds on the EUT Line 20-1 and EUT\nLine 26-1 pipelines within the entire special permit inspection areas. No\nadditional girth weld examinations are required for the specialpermit segment\nextension.\n22) TXGT must identify all shorted casings within the specialpermit segments not later than six\n(6) months after the grant of this special permit and classify any shorted casings as either\nhaving a \"metallic short\" (the carrier pipe and the casing are in metallic contact) or an\n\"electrolytic short\" (the casing is filled with an electrolyte) using a commonly accepted\nmethod such as the Panhandle Eastern, Pearson, DCVG, ACVG or AC Attenuation.\na) Metallic Shorts: TXGT must clear any metallic short on a casing in the specialpermit\nsegments not later than six (6) months after the short is identified.\nb) Electrolytic Shorts: TXGT must remove the electrolyte from the casing/pipe annular\nspace on any casing in the specialpermit segments that has an electrolytic short not\nlater than six (6) months after the short is identified.\nc) All Shorted Casings: TXGT must install external corrosion control test leads on both\nthe carrier pipe and the casing in accordance with 49 CFR 192.471 to facilitate the\nfuture monitoring for shorted conditions and may then choose to fill the casing/pipe\nannular space with a high dielectric casing filler or other material which provides a\ncorrosion inhibiting environment provided an assessment and all repairs were\ncompleted.\nIf TXGT identifies any shorted casings within the specialpermit segments, they must\nmonitor all casings within the specialpermit segments for shorts at least once each calendar\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 13 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 14>>>\n\nquarter, but at intervals not to exceed 100 days, for four consecutive calendar quarters after\nthe grant of this special permit. The intent is to identify through monitoring the calendar\nquarter(s) when electrolytic casing shorts are most likely to be identified. TXGT must then\nmonitor all casings for shorts within the special permit segments at least once each calendar\nyear during the calendar quarter(s) when electrolytic casing shorts are most likely to be\nidentified. Any casing shorts found in the specialpermit segments at any time must be\nclassified and cleared as explained above.\n¯ PHMSA Note: TXGT reports no cased pipes under road crossings in the special\npermit segments.\n23) Pipe Seam Evaluations: TXGT must identify any pipeline in a special permit inspection\nareas that may be susceptible to pipe seam issues because of the vintage of the pipe, the\nmanufacture of the pipe, or other issues. Once TXGT has identified such issues, they must\ncomplete one or all of the following as required:\na) TXGT must perform an engineering analysis to determine if there are any pipe seam\nthreats on the EUT Line 20-1 and EUT Line 26-1 pipelines located in the special\npermit inspection areas. This analysis must include the documentation that the\nprocesses in 'M Charts' in \"Evaluating the Stability ofManufacturing and\nConstruction Defects in Natural Gas Pipelines\" by Kiefner and Associates updated\nApril 26, 2007 under PHMSA Contract DTFAA-COSPO212O and Figure 4.2,\n'Framework for Evaluation with Path for the Segment Analyzed Highlighted' from\nTTO-5 \"Low Frequency ERW and Lap Welded Longitudinal Seam Evaluation\" by\nMichael Baker Jr., and Kiefner and Associates, et. al. under PHMSA Contract\nDTRS56-02-D-70036 were utilized along with other relevant materials. If the\nengineering analysis shows that the pipe seam issues on the EUT Line 20-1 and EUT\nLine 26-1 pipelines located in the specialpermit inspection areas are not a threat to\nthe integrity of the pipeline, TXGT does not have to complete Conditions 23(b)\nthrough 23(e). If there is a threat to the integrity of the pipeline, then one or more of\nConditions 23(b) through 23(e) must be completed; or\nb) The specialpermit segment pipeline must be hydrostatically tested to a minimum\npressure of 100 percent SMYS, per 49 CFR Part 192, Subpart J requirements for eight\ncontinuous hours, within One (1) year of issuance of this special permit if no 49 CFR\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 14 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 15>>>\n\nPart 192, Subpart J had been performed since 1971. The hydrostatic test must confirm\nno systemic issues with the weld seam or pipe. A root cause analysis, including\nmetallurgical examination of the failed pipe, must be performed for any failure\nexperienced to verify that it is not indicative of a systemic issue. The results of this\nroot cause analysis must be reported to the Director, PHMSA Southern Region within\n60 days of the failure; or\nc) If the pipeline in the specialpermit inspection areas has experienced a seam leak or\nfailure in the last five (5) years and no hydrostatic test meeting the conditions per 49\nCFR Part 192, Subpart J was performed after the seam leak or failure, then a\nhydrostatic test must be performed within one (1) year after the grant of this special\npermit on the specialpermit segment pipeline; and\nd) If the pipeline in the specialpermit segments has any LF ERW seam or EFW seam\nconditions as noted in i, ii, or iii below, the specialpermit segment pipeline must be\nreplaced:\ni) constructed or manufactured prior to 1954 and has had any pipe seam leaks or\nruptures in the specialpermit inspection areas,\nii) has unknown manufacturing processes, or\niii) has known manufacturing or construction issues that are unresolved [such as\nconcentrated hard spots, hard heat-affected weld zones, selective seam corrosion,\npipe movement that has lead to buckling, have had past leak and rupture issues; or\nany other systemic issues].\ne) If the pipeline in the specialpermit segments has a reduced longitudinal joint seam\nfactor, below 1.0, as defined in 49 CFR 192.113 the specialpermit segment pipeline\nmust be replaced.\nPHMSA Note: TXGT reports that EUT Line 20-1 was originally constructed\nwith electric flash welded pipes (EFW) in the special permit segments in 1956.\nEUT Line 26-1 was originally constructed with EFW welded pipes in the special\npermit segments in 1962, with several replaced pipes manufactured with double\nsubmerged arc welded (DSAW) seam. TXGT reports that there are no known\nmanufacturing or construction issues such as hard spots, hard heat-affected weld\nzones, selective seam corrosion or buckling.\nHydrotests were performed for the special permit segments in 2009 at 1462 psig for\nSpecial Permit: PHMSA-2009-0158, Texas Gas Transmission Page 15 of 18\nModification of Special Permit Segments for EUT Line 20-1 and EUT Line 26-1\n\n<<<PAGE 16>>>\n\neight (8) hours. TXGT must conduct hydrotests for the new specialpermit segments\nfor EUT 26-1 by December 31, 2019, and BUT 20-1 by September 30, 2020.\n24) Not/Applicable\n25) TXGT must maintain the following records for each specialpermit segment:\na) Documentation showing that each specialpermit segment has received a 49 CFR\n192.505, Subpart J, hydrostatic test for eight (8) continuous hours and at a minimum\np","truncated":true,"body_characters":45864}