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49 CFR 192.147 - Flanges and flange accessories. | Regulus

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49 CFR Part 192

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titleTitle 49 — Transportation subtitleSubtitle B — Other Regulations Relating to Transportation chapterChapter I — Pipeline and Hazardous Materials Safety Administration, Department of Transportation subchapterSubchapter D — Pipeline Safety partPart 192 subpartSubpart D—Design of Pipeline Components

36 sections

Subpart A—General14

§ 192.1What is the scope of this part?§ 192.3Definitions.§ 192.5Class locations.§ 192.7What documents are incorporated by reference partly or wholly in this part?§ 192.8How are onshore gathering pipelines and regulated onshore gathering pipelines determined?§ 192.9What requirements apply to gathering pipelines?§ 192.10Outer continental shelf pipelines.§ 192.11Petroleum gas systems.§ 192.12Underground natural gas storage facilities.§ 192.13What general requirements apply to pipelines regulated under this part?§ 192.14Conversion to service subject to this part.§ 192.15Rules of regulatory construction.§ 192.16Customer notification.§ 192.18How to notify PHMSA.

Subpart B—Materials10

§ 192.51Scope.§ 192.53General.§ 192.55Steel pipe.§ 192.57[Reserved]§ 192.59Plastic pipe.§ 192.61[Reserved]§ 192.63Marking of materials.§ 192.65Transportation of pipe.§ 192.67Records: Material properties.§ 192.69Storage and handling of plastic pipe and associated components.

Subpart C—Pipe Design14

§ 192.101Scope.§ 192.103General.§ 192.105Design formula for steel pipe.§ 192.107Yield strength (S) for steel pipe.§ 192.109Nominal wall thickness (t) for steel pipe.§ 192.111Design factor (F) for steel pipe.§ 192.112Additional design requirements for steel pipe using alternative maximum allowable operating pressure.§ 192.113Longitudinal joint factor (E) for steel pipe.§ 192.115Temperature derating factor (T) for steel pipe.§ 192.117-192.119§§ 192.117-192.119 [Reserved]§ 192.121Design of plastic pipe.§ 192.123[Reserved]§ 192.125Design of copper pipe.§ 192.127Records: Pipe design.

Subpart D—Design of Pipeline Components36

§ 192.141Scope.§ 192.143General requirements.§ 192.144Qualifying metallic components.§ 192.145Valves.§ 192.147Flanges and flange accessories.§ 192.149Standard fittings.§ 192.150Passage of internal inspection devices.§ 192.151Tapping.§ 192.153Components fabricated by welding.§ 192.155Welded branch connections.§ 192.157Extruded outlets.§ 192.159Flexibility.§ 192.161Supports and anchors.§ 192.163Compressor stations: Design and construction.§ 192.165Compressor stations: Liquid removal.§ 192.167Compressor stations: Emergency shutdown.§ 192.169Compressor stations: Pressure limiting devices.§ 192.171Compressor stations: Additional safety equipment.§ 192.173Compressor stations: Ventilation.§ 192.175Pipe-type and bottle-type holders.§ 192.177Additional provisions for bottle-type holders.§ 192.179Transmission line valves.§ 192.181Distribution line valves.§ 192.183Vaults: Structural design requirements.§ 192.185Vaults: Accessibility.§ 192.187Vaults: Sealing, venting, and ventilation.§ 192.189Vaults: Drainage and waterproofing.§ 192.191[Reserved]§ 192.193Valve installation in plastic pipe.§ 192.195Protection against accidental overpressuring.§ 192.197Control of the pressure of gas delivered from high-pressure distribution systems.§ 192.199Requirements for design of pressure relief and limiting devices.§ 192.201Required capacity of pressure relieving and limiting stations.§ 192.203Instrument, control, and sampling pipe and components.§ 192.204Risers installed after January 22, 2019.§ 192.205Records: Pipeline components.

Subpart E—Welding of Steel in Pipelines10

§ 192.221Scope.§ 192.225Welding procedures.§ 192.227Qualification of welders and welding operators.§ 192.229Limitations on welders and welding operators.§ 192.231Protection from weather.§ 192.233Miter joints.§ 192.235Preparation for welding.§ 192.241Inspection and test of welds.§ 192.243Nondestructive testing.§ 192.245Repair or removal of defects.

Subpart F—Joining of Materials Other Than by Welding9

§ 192.271Scope.§ 192.273General.§ 192.275Cast iron pipe.§ 192.277Ductile iron pipe.§ 192.279Copper pipe.§ 192.281Plastic pipe.§ 192.283Plastic pipe: Qualifying joining procedures.§ 192.285Plastic pipe: Qualifying persons to make joints.§ 192.287Plastic pipe: Inspection of joints.

Subpart G—General Construction Requirements for Transmission Lines and Mains16

§ 192.301Scope.§ 192.303Compliance with specifications or standards.§ 192.305Inspection: General.§ 192.307Inspection of materials.§ 192.309Repair of steel pipe.§ 192.311Repair of plastic pipe.§ 192.313Bends and elbows.§ 192.315Wrinkle bends in steel pipe.§ 192.317Protection from hazards.§ 192.319Installation of pipe in a ditch.§ 192.321Installation of plastic pipe.§ 192.323Casing.§ 192.325Underground clearance.§ 192.327Cover.§ 192.328Additional construction requirements for steel pipe using alternative maximum allowable operating pressure.§ 192.329Installation of plastic pipelines by trenchless excavation.

Subpart H—Customer Meters, Service Regulators, and Service Lines19

§ 192.351Scope.§ 192.353Customer meters and regulators: Location.§ 192.355Customer meters and regulators: Protection from damage.§ 192.357Customer meters and regulators: Installation.§ 192.359Customer meter installations: Operating pressure.§ 192.361Service lines: Installation.§ 192.363Service lines: Valve requirements.§ 192.365Service lines: Location of valves.§ 192.367Service lines: General requirements for connections to main piping.§ 192.369Service lines: Connections to cast iron or ductile iron mains.§ 192.371Service lines: Steel.§ 192.373Service lines: Cast iron and ductile iron.§ 192.375Service lines: Plastic.§ 192.376Installation of plastic service lines by trenchless excavation.§ 192.377Service lines: Copper.§ 192.379New service lines not in use.§ 192.381Service lines: Excess flow valve performance standards.§ 192.383Excess flow valve installation.§ 192.385Manual service line shut-off valve installation.

Subpart I—Requirements for Corrosion Control26

§ 192.451Scope.§ 192.452How does this subpart apply to converted pipelines and regulated onshore gathering pipelines?§ 192.453General.§ 192.455External corrosion control: Buried or submerged pipelines installed after July 31, 1971.§ 192.457External corrosion control: Buried or submerged pipelines installed before August 1, 1971.§ 192.459External corrosion control: Examination of buried pipeline when exposed.§ 192.461External corrosion control: Protective coating.§ 192.463External corrosion control: Cathodic protection.§ 192.465External corrosion control: Monitoring and remediation.§ 192.467External corrosion control: Electrical isolation.§ 192.469External corrosion control: Test stations.§ 192.471External corrosion control: Test leads.§ 192.473External corrosion control: Interference currents.§ 192.475Internal corrosion control: General.§ 192.476Internal corrosion control: Design and construction of transmission line.§ 192.477Internal corrosion control: Monitoring.§ 192.478[Reserved]§ 192.479Atmospheric corrosion control: General.§ 192.481Atmospheric corrosion control: Monitoring.§ 192.483Remedial measures: General.§ 192.485Remedial measures: Transmission lines.§ 192.487Remedial measures: Distribution lines other than cast iron or ductile iron lines.§ 192.489Remedial measures: Cast iron and ductile iron pipelines.§ 192.490Direct assessment.§ 192.491Corrosion control records.§ 192.493In-line inspection of pipelines.

Subpart J—Test Requirements10

§ 192.501Scope.§ 192.503General requirements.§ 192.505Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more of SMYS.§ 192.506Transmission lines: Spike hydrostatic pressure test.§ 192.507Test requirements for pipelines to operate at a hoop stress less than 30 percent of SMYS and at or above 100 p.s.i. (689 kPa) gage.§ 192.509Test requirements for pipelines to operate below 100 p.s.i. (689 kPa) gage.§ 192.511Test requirements for service lines.§ 192.513Test requirements for plastic pipelines.§ 192.515Environmental protection and safety requirements.§ 192.517Records.

Subpart K—Uprating4

§ 192.551Scope.§ 192.553General requirements.§ 192.555Uprating to a pressure that will produce a hoop stress of 30 percent or more of SMYS in steel pipelines.§ 192.557Uprating: Steel pipelines to a pressure that will produce a hoop stress less than 30 percent of SMYS: plastic, cast iron, and ductile iron pipelines.

Subpart L—Operations26

§ 192.601Scope.§ 192.603General provisions.§ 192.605Procedural manual for operations, maintenance, and emergencies.§ 192.607Verification of Pipeline Material Properties and Attributes: Onshore steel transmission pipelines.§ 192.609Change in class location: Required study.§ 192.610Change in class location: Change in valve spacing.§ 192.611Change in class location: Confirmation or revision of maximum allowable operating pressure.§ 192.612Underwater inspection and reburial of pipelines in the Gulf of America and its inlets.§ 192.613Continuing surveillance.§ 192.614Damage prevention program.§ 192.615Emergency plans.§ 192.616Public awareness.§ 192.617Investigation of failures and incidents.§ 192.619Maximum allowable operating pressure: Steel or plastic pipelines.§ 192.620Alternative maximum allowable operating pressure for certain steel pipelines.§ 192.621Maximum allowable operating pressure: High-pressure distribution systems.§ 192.623Maximum and minimum allowable operating pressure; Low-pressure distribution systems.§ 192.624Maximum allowable operating pressure reconfirmation: Onshore steel transmission pipelines.§ 192.625Odorization of gas.§ 192.627Tapping pipelines under pressure.§ 192.629Purging of pipelines.§ 192.631Control room management.§ 192.632Engineering Critical Assessment for Maximum Allowable Operating Pressure Reconfirmation: Onshore steel transmission pipelines.§ 192.634Transmission lines: Onshore valve shut-off for rupture mitigation.§ 192.635Notification of potential rupture.§ 192.636Transmission lines: Response to a rupture; capabilities of rupture-mitigation valves (RMVs) or alternative equivalent technologies.

Subpart M—Maintenance34

§ 192.701Scope.§ 192.703General.§ 192.705Transmission lines: Patrolling.§ 192.706Transmission lines: Leakage surveys.§ 192.707Line markers for mains and transmission lines.§ 192.709Transmission lines: Record keeping.§ 192.710Transmission lines: Assessments outside of high consequence areas.§ 192.711Transmission lines: General requirements for repair procedures.§ 192.712Analysis of predicted failure pressure and critical strain level.§ 192.713Transmission lines: Permanent field repair of imperfections and damages.§ 192.714Transmission lines: Repair criteria for onshore transmission pipelines.§ 192.715Transmission lines: Permanent field repair of welds.§ 192.717Transmission lines: Permanent field repair of leaks.§ 192.719Transmission lines: Testing of repairs.§ 192.720Distribution systems: Leak repair.§ 192.721Distribution systems: Patrolling.§ 192.723Distribution systems: Leakage surveys.§ 192.725Test requirements for reinstating service lines.§ 192.727Abandonment or deactivation of facilities.§ 192.731Compressor stations: Inspection and testing of relief devices.§ 192.735Compressor stations: Storage of combustible materials.§ 192.736Compressor stations: Gas detection.§ 192.739Pressure limiting and regulating stations: Inspection and testing.§ 192.740Pressure regulating, limiting, and overpressure protection—Individual service lines directly connected to regulated gathering or transmission pipelines.§ 192.741Pressure limiting and regulating stations: Telemetering or recording gauges.§ 192.743Pressure limiting and regulating stations: Capacity of relief devices.§ 192.745Valve maintenance: Transmission lines.§ 192.747Valve maintenance: Distribution systems.§ 192.749Vault maintenance.§ 192.750Launcher and receiver safety.§ 192.751Prevention of accidental ignition.§ 192.753Caulked bell and spigot joints.§ 192.755Protecting cast-iron pipelines.§ 192.756Joining plastic pipe by heat fusion; equipment maintenance and calibration.

Subpart N—Qualification of Pipeline Personnel5

§ 192.801Scope.§ 192.803Definitions.§ 192.805Qualification program.§ 192.807Recordkeeping.§ 192.809General.

Subpart O—Gas Transmission Pipeline Integrity Management26

§ 192.901What do the regulations in this subpart cover?§ 192.903What definitions apply to this subpart?§ 192.905How does an operator identify a high consequence area?§ 192.907What must an operator do to implement this subpart?§ 192.909How can an operator change its integrity management program?§ 192.911What are the elements of an integrity management program?§ 192.913When may an operator deviate its program from certain requirements of this subpart?§ 192.915What knowledge and training must personnel have to carry out an integrity management program?§ 192.917How does an operator identify potential threats to pipeline integrity and use the threat identification in its integrity program?§ 192.919What must be in the baseline assessment plan?§ 192.921How is the baseline assessment to be conducted?§ 192.923How is direct assessment used and for what threats?§ 192.925What are the requirements for using External Corrosion Direct Assessment (ECDA)?§ 192.927What are the requirements for using Internal Corrosion Direct Assessment (ICDA)?§ 192.929What are the requirements for using Direct Assessment for Stress Corrosion Cracking?§ 192.931How may Confirmatory Direct Assessment (CDA) be used?§ 192.933What actions must be taken to address integrity issues?§ 192.935What additional preventive and mitigative measures must an operator take?§ 192.937What is a continual process of evaluation and assessment to maintain a pipeline's integrity?§ 192.939What are the required reassessment intervals?§ 192.941What is a low stress reassessment?§ 192.943When can an operator deviate from these reassessment intervals?§ 192.945What methods must an operator use to measure program effectiveness?§ 192.947What records must an operator keep?§ 192.949[Reserved]§ 192.951Where does an operator file a report?

Subpart P—Gas Distribution Pipeline Integrity Management (IM)8

§ 192.1001What definitions apply to this subpart?§ 192.1003What do the regulations in this subpart cover?§ 192.1005What must a gas distribution operator (other than a small LPG operator) do to implement this subpart?§ 192.1007What are the required elements of an integrity management plan?§ 192.1009[Reserved]§ 192.1011What records must an operator keep?§ 192.1013When may an operator deviate from required periodic inspections under this part?§ 192.1015What must a small LPG operator do to implement this subpart?

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Subpart A—General14

§ 192.1What is the scope of this part?§ 192.3Definitions.§ 192.5Class locations.§ 192.7What documents are incorporated by reference partly or wholly in this part?§ 192.8How are onshore gathering pipelines and regulated onshore gathering pipelines determined?§ 192.9What requirements apply to gathering pipelines?§ 192.10Outer continental shelf pipelines.§ 192.11Petroleum gas systems.§ 192.12Underground natural gas storage facilities.§ 192.13What general requirements apply to pipelines regulated under this part?§ 192.14Conversion to service subject to this part.§ 192.15Rules of regulatory construction.§ 192.16Customer notification.§ 192.18How to notify PHMSA.

Subpart B—Materials10

§ 192.51Scope.§ 192.53General.§ 192.55Steel pipe.§ 192.57[Reserved]§ 192.59Plastic pipe.§ 192.61[Reserved]§ 192.63Marking of materials.§ 192.65Transportation of pipe.§ 192.67Records: Material properties.§ 192.69Storage and handling of plastic pipe and associated components.

Subpart C—Pipe Design14

§ 192.101Scope.§ 192.103General.§ 192.105Design formula for steel pipe.§ 192.107Yield strength (S) for steel pipe.§ 192.109Nominal wall thickness (t) for steel pipe.§ 192.111Design factor (F) for steel pipe.§ 192.112Additional design requirements for steel pipe using alternative maximum allowable operating pressure.§ 192.113Longitudinal joint factor (E) for steel pipe.§ 192.115Temperature derating factor (T) for steel pipe.§ 192.117-192.119§§ 192.117-192.119 [Reserved]§ 192.121Design of plastic pipe.§ 192.123[Reserved]§ 192.125Design of copper pipe.§ 192.127Records: Pipe design.

Subpart D—Design of Pipeline Components36

§ 192.141Scope.§ 192.143General requirements.§ 192.144Qualifying metallic components.§ 192.145Valves.§ 192.147Flanges and flange accessories.§ 192.149Standard fittings.§ 192.150Passage of internal inspection devices.§ 192.151Tapping.§ 192.153Components fabricated by welding.§ 192.155Welded branch connections.§ 192.157Extruded outlets.§ 192.159Flexibility.§ 192.161Supports and anchors.§ 192.163Compressor stations: Design and construction.§ 192.165Compressor stations: Liquid removal.§ 192.167Compressor stations: Emergency shutdown.§ 192.169Compressor stations: Pressure limiting devices.§ 192.171Compressor stations: Additional safety equipment.§ 192.173Compressor stations: Ventilation.§ 192.175Pipe-type and bottle-type holders.§ 192.177Additional provisions for bottle-type holders.§ 192.179Transmission line valves.§ 192.181Distribution line valves.§ 192.183Vaults: Structural design requirements.§ 192.185Vaults: Accessibility.§ 192.187Vaults: Sealing, venting, and ventilation.§ 192.189Vaults: Drainage and waterproofing.§ 192.191[Reserved]§ 192.193Valve installation in plastic pipe.§ 192.195Protection against accidental overpressuring.§ 192.197Control of the pressure of gas delivered from high-pressure distribution systems.§ 192.199Requirements for design of pressure relief and limiting devices.§ 192.201Required capacity of pressure relieving and limiting stations.§ 192.203Instrument, control, and sampling pipe and components.§ 192.204Risers installed after January 22, 2019.§ 192.205Records: Pipeline components.

Subpart E—Welding of Steel in Pipelines10

§ 192.221Scope.§ 192.225Welding procedures.§ 192.227Qualification of welders and welding operators.§ 192.229Limitations on welders and welding operators.§ 192.231Protection from weather.§ 192.233Miter joints.§ 192.235Preparation for welding.§ 192.241Inspection and test of welds.§ 192.243Nondestructive testing.§ 192.245Repair or removal of defects.

Subpart F—Joining of Materials Other Than by Welding9

§ 192.271Scope.§ 192.273General.§ 192.275Cast iron pipe.§ 192.277Ductile iron pipe.§ 192.279Copper pipe.§ 192.281Plastic pipe.§ 192.283Plastic pipe: Qualifying joining procedures.§ 192.285Plastic pipe: Qualifying persons to make joints.§ 192.287Plastic pipe: Inspection of joints.

Subpart G—General Construction Requirements for Transmission Lines and Mains16

§ 192.301Scope.§ 192.303Compliance with specifications or standards.§ 192.305Inspection: General.§ 192.307Inspection of materials.§ 192.309Repair of steel pipe.§ 192.311Repair of plastic pipe.§ 192.313Bends and elbows.§ 192.315Wrinkle bends in steel pipe.§ 192.317Protection from hazards.§ 192.319Installation of pipe in a ditch.§ 192.321Installation of plastic pipe.§ 192.323Casing.§ 192.325Underground clearance.§ 192.327Cover.§ 192.328Additional construction requirements for steel pipe using alternative maximum allowable operating pressure.§ 192.329Installation of plastic pipelines by trenchless excavation.

Subpart H—Customer Meters, Service Regulators, and Service Lines19

§ 192.351Scope.§ 192.353Customer meters and regulators: Location.§ 192.355Customer meters and regulators: Protection from damage.§ 192.357Customer meters and regulators: Installation.§ 192.359Customer meter installations: Operating pressure.§ 192.361Service lines: Installation.§ 192.363Service lines: Valve requirements.§ 192.365Service lines: Location of valves.§ 192.367Service lines: General requirements for connections to main piping.§ 192.369Service lines: Connections to cast iron or ductile iron mains.§ 192.371Service lines: Steel.§ 192.373Service lines: Cast iron and ductile iron.§ 192.375Service lines: Plastic.§ 192.376Installation of plastic service lines by trenchless excavation.§ 192.377Service lines: Copper.§ 192.379New service lines not in use.§ 192.381Service lines: Excess flow valve performance standards.§ 192.383Excess flow valve installation.§ 192.385Manual service line shut-off valve installation.

Subpart I—Requirements for Corrosion Control26

§ 192.451Scope.§ 192.452How does this subpart apply to converted pipelines and regulated onshore gathering pipelines?§ 192.453General.§ 192.455External corrosion control: Buried or submerged pipelines installed after July 31, 1971.§ 192.457External corrosion control: Buried or submerged pipelines installed before August 1, 1971.§ 192.459External corrosion control: Examination of buried pipeline when exposed.§ 192.461External corrosion control: Protective coating.§ 192.463External corrosion control: Cathodic protection.§ 192.465External corrosion control: Monitoring and remediation.§ 192.467External corrosion control: Electrical isolation.§ 192.469External corrosion control: Test stations.§ 192.471External corrosion control: Test leads.§ 192.473External corrosion control: Interference currents.§ 192.475Internal corrosion control: General.§ 192.476Internal corrosion control: Design and construction of transmission line.§ 192.477Internal corrosion control: Monitoring.§ 192.478[Reserved]§ 192.479Atmospheric corrosion control: General.§ 192.481Atmospheric corrosion control: Monitoring.§ 192.483Remedial measures: General.§ 192.485Remedial measures: Transmission lines.§ 192.487Remedial measures: Distribution lines other than cast iron or ductile iron lines.§ 192.489Remedial measures: Cast iron and ductile iron pipelines.§ 192.490Direct assessment.§ 192.491Corrosion control records.§ 192.493In-line inspection of pipelines.

Subpart J—Test Requirements10

§ 192.501Scope.§ 192.503General requirements.§ 192.505Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more of SMYS.§ 192.506Transmission lines: Spike hydrostatic pressure test.§ 192.507Test requirements for pipelines to operate at a hoop stress less than 30 percent of SMYS and at or above 100 p.s.i. (689 kPa) gage.§ 192.509Test requirements for pipelines to operate below 100 p.s.i. (689 kPa) gage.§ 192.511Test requirements for service lines.§ 192.513Test requirements for plastic pipelines.§ 192.515Environmental protection and safety requirements.§ 192.517Records.

Subpart K—Uprating4

§ 192.551Scope.§ 192.553General requirements.§ 192.555Uprating to a pressure that will produce a hoop stress of 30 percent or more of SMYS in steel pipelines.§ 192.557Uprating: Steel pipelines to a pressure that will produce a hoop stress less than 30 percent of SMYS: plastic, cast iron, and ductile iron pipelines.

Subpart L—Operations26

§ 192.601Scope.§ 192.603General provisions.§ 192.605Procedural manual for operations, maintenance, and emergencies.§ 192.607Verification of Pipeline Material Properties and Attributes: Onshore steel transmission pipelines.§ 192.609Change in class location: Required study.§ 192.610Change in class location: Change in valve spacing.§ 192.611Change in class location: Confirmation or revision of maximum allowable operating pressure.§ 192.612Underwater inspection and reburial of pipelines in the Gulf of America and its inlets.§ 192.613Continuing surveillance.§ 192.614Damage prevention program.§ 192.615Emergency plans.§ 192.616Public awareness.§ 192.617Investigation of failures and incidents.§ 192.619Maximum allowable operating pressure: Steel or plastic pipelines.§ 192.620Alternative maximum allowable operating pressure for certain steel pipelines.§ 192.621Maximum allowable operating pressure: High-pressure distribution systems.§ 192.623Maximum and minimum allowable operating pressure; Low-pressure distribution systems.§ 192.624Maximum allowable operating pressure reconfirmation: Onshore steel transmission pipelines.§ 192.625Odorization of gas.§ 192.627Tapping pipelines under pressure.§ 192.629Purging of pipelines.§ 192.631Control room management.§ 192.632Engineering Critical Assessment for Maximum Allowable Operating Pressure Reconfirmation: Onshore steel transmission pipelines.§ 192.634Transmission lines: Onshore valve shut-off for rupture mitigation.§ 192.635Notification of potential rupture.§ 192.636Transmission lines: Response to a rupture; capabilities of rupture-mitigation valves (RMVs) or alternative equivalent technologies.

Subpart M—Maintenance34

§ 192.701Scope.§ 192.703General.§ 192.705Transmission lines: Patrolling.§ 192.706Transmission lines: Leakage surveys.§ 192.707Line markers for mains and transmission lines.§ 192.709Transmission lines: Record keeping.§ 192.710Transmission lines: Assessments outside of high consequence areas.§ 192.711Transmission lines: General requirements for repair procedures.§ 192.712Analysis of predicted failure pressure and critical strain level.§ 192.713Transmission lines: Permanent field repair of imperfections and damages.§ 192.714Transmission lines: Repair criteria for onshore transmission pipelines.§ 192.715Transmission lines: Permanent field repair of welds.§ 192.717Transmission lines: Permanent field repair of leaks.§ 192.719Transmission lines: Testing of repairs.§ 192.720Distribution systems: Leak repair.§ 192.721Distribution systems: Patrolling.§ 192.723Distribution systems: Leakage surveys.§ 192.725Test requirements for reinstating service lines.§ 192.727Abandonment or deactivation of facilities.§ 192.731Compressor stations: Inspection and testing of relief devices.§ 192.735Compressor stations: Storage of combustible materials.§ 192.736Compressor stations: Gas detection.§ 192.739Pressure limiting and regulating stations: Inspection and testing.§ 192.740Pressure regulating, limiting, and overpressure protection—Individual service lines directly connected to regulated gathering or transmission pipelines.§ 192.741Pressure limiting and regulating stations: Telemetering or recording gauges.§ 192.743Pressure limiting and regulating stations: Capacity of relief devices.§ 192.745Valve maintenance: Transmission lines.§ 192.747Valve maintenance: Distribution systems.§ 192.749Vault maintenance.§ 192.750Launcher and receiver safety.§ 192.751Prevention of accidental ignition.§ 192.753Caulked bell and spigot joints.§ 192.755Protecting cast-iron pipelines.§ 192.756Joining plastic pipe by heat fusion; equipment maintenance and calibration.

Subpart N—Qualification of Pipeline Personnel5

§ 192.801Scope.§ 192.803Definitions.§ 192.805Qualification program.§ 192.807Recordkeeping.§ 192.809General.

Subpart O—Gas Transmission Pipeline Integrity Management26

§ 192.901What do the regulations in this subpart cover?§ 192.903What definitions apply to this subpart?§ 192.905How does an operator identify a high consequence area?§ 192.907What must an operator do to implement this subpart?§ 192.909How can an operator change its integrity management program?§ 192.911What are the elements of an integrity management program?§ 192.913When may an operator deviate its program from certain requirements of this subpart?§ 192.915What knowledge and training must personnel have to carry out an integrity management program?§ 192.917How does an operator identify potential threats to pipeline integrity and use the threat identification in its integrity program?§ 192.919What must be in the baseline assessment plan?§ 192.921How is the baseline assessment to be conducted?§ 192.923How is direct assessment used and for what threats?§ 192.925What are the requirements for using External Corrosion Direct Assessment (ECDA)?§ 192.927What are the requirements for using Internal Corrosion Direct Assessment (ICDA)?§ 192.929What are the requirements for using Direct Assessment for Stress Corrosion Cracking?§ 192.931How may Confirmatory Direct Assessment (CDA) be used?§ 192.933What actions must be taken to address integrity issues?§ 192.935What additional preventive and mitigative measures must an operator take?§ 192.937What is a continual process of evaluation and assessment to maintain a pipeline's integrity?§ 192.939What are the required reassessment intervals?§ 192.941What is a low stress reassessment?§ 192.943When can an operator deviate from these reassessment intervals?§ 192.945What methods must an operator use to measure program effectiveness?§ 192.947What records must an operator keep?§ 192.949[Reserved]§ 192.951Where does an operator file a report?

Subpart P—Gas Distribution Pipeline Integrity Management (IM)8

§ 192.1001What definitions apply to this subpart?§ 192.1003What do the regulations in this subpart cover?§ 192.1005What must a gas distribution operator (other than a small LPG operator) do to implement this subpart?§ 192.1007What are the required elements of an integrity management plan?§ 192.1009[Reserved]§ 192.1011What records must an operator keep?§ 192.1013When may an operator deviate from required periodic inspections under this part?§ 192.1015What must a small LPG operator do to implement this subpart?

Related 42 Definitions History 36 Authority 67

RegulationsTitle 49Subtitle BChapter ISubchapter DPart 192Subpart D—Design of Pipeline Components49 CFR 192.147

Regulationcurrent

49 CFR 192.147

Flanges and flange accessories.

Current as of 2026-08-18 Government source

eCFR editorial compilationAuthoritative but unofficial

3 passages

(a)Each flange or flange accessory (other than cast iron) must meet the minimum requirements of ASME/ANSI B16.5 (incorporated by reference, see § 192.7), ANSI/MSS SP-44 (incorporation by reference, see § 192.7), or the equivalent.#

(b)Each flange assembly must be able to withstand the maximum pressure at which the pipeline is to be operated and to maintain its physical and chemical properties at any temperature to which it is anticipated that it might be subjected in service.#

(c)Each flange on a flanged joint in cast iron pipe must conform in dimensions, drilling, face and gasket design to ASME/ANSI B16.1 (incorporated by reference, see § 192.7)and be cast integrally with the pipe, valve, or fitting.#

Previous§ 192.145 Next§ 192.149

On this page

(a)Each flange or flange accessory (other than cast iron) must meet the minimum requirements (b)Each flange assembly must be able to withstand the maximum pressure at which the pipeline (c)Each flange on a flanged joint in cast iron pipe must conform in dimensions, drilling, fac

Related 42 Definitions History 36 Authority 67 Community

Only explicit, source-backed relationships are shown.

Regulations7

What documents are incorporated by reference partly or wholly in this part?

192.147(c) · incorporates or references

LAC 43:XIII §1107

Flanges and Flange Accessories [49 CFR 192.147]

192.147(a) · incorporates or references

Flanges and Flange Accessories

192.147 · incorporates or references

23 CAR pt. 500 191-A

Appendix A to Part 191 - Procedure for determining reporting threshold

192.147(c) · incorporates or references

20 CSR 4240-40.030

Safety Standards-Transportation of Gas by Pipeline

49 CFR 192.147 · incorporates or references

HAR 6-77-43

HAR 6-77-43 Valves

192.147 · incorporates or references

HAR 6-77-44

HAR 6-77-44 Flanges and flange accessories

192.147 · incorporates or references

Rulemaking11

90 FR 40749

Pipeline Safety: Periodic Standards Update II

192.147(c) · cited in rulemaking

89 FR 33264

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments

192.147(a) · cited in rulemaking

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments

192.147(a) · cited in rulemaking

84 FR 52180

Pipeline Safety: Safety of Gas Transmission Pipelines: MAOP Reconfirmation, Expansion of Assessment Requirements, and Other Related Amendments

192.147(a) · cited in rulemaking

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments

192.147(a) · cited in rulemaking

Interpretations & guidance8

PHMSA Guidance, Small Natural Gas Operator Guide (January 2017) (PDF)

Small Natural Gas Operator Guide (January 2017) (PDF)

192.147 · guidance cites regulation

PHMSA IA FED.2021.01

IA Content FED.2021.01

192.147 · guidance cites regulation

Railroad Commission of Texas — Pipeline Safety Interpretation

192.147 · interpreted by

Pipeline Safety Interpretation PI-81-0105

192.147 · interpreted by

NIBCO Inc. — Pipeline Safety Interpretation

192.147 · interpreted by

Inspection11

PHMSA GT.2026.01

2026 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection

PHMSA GD.2026.01

2026 Gas Distribution IA Question Set

DC.DPC.FLANGE.R — 192.147(a), 192.147(b), 192.147(c) (+1 more questions) · examined by inspection

PHMSA GT.2025.01

2025 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection

PHMSA GD.2025.01

2025 Gas Distribution IA Question Set

DC.DPC.FLANGE.R — 192.147(a), 192.147(b), 192.147(c) (+1 more questions) · examined by inspection

Enforcement5

CPF 12025024NOA

COLUMBIA GAS TRANSMISSION, LLC — Notice of Amendment

192.147(a) · cited in enforcement

CPF 12024014NOA

ANR PIPELINE CO — Notice of Amendment

192.147 · cited in enforcement

CPF 52021036WL

TESORO REFINING & MARKETING COMPANY, LLC — Warning Letter

192.147(a), 192.147 · cited in enforcement

CPF 520191006W

GAS TRANSMISSION NORTHWEST LLC — Warning Letter

192.147(b), 192.147 · cited in enforcement

CPF 520030003

CPN PIPELINE COMPANY — Notice of Amendment

192.147(b) · cited in enforcement

Ask the corpus

Claims link back to retrieved source passages.

Record details

Retrieved: Aug 20, 2026
Version: 2026-08-18

7924a2a44ffd4f471f…

Rulemaking

78 FR 49996

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Amendments

192.147 · cited in rulemaking

75 FR 48593

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Edits

192.147(c) · cited in rulemaking

74 FR 36139

Pipeline Safety: Periodic Updates of Regulatory References to Technical Standards and Miscellaneous Edits

192.147(c) · cited in rulemaking

71 FR 33402

Pipeline Safety: Update of Regulatory References to Technical Standards

192.147(a) · cited in rulemaking

70 FR 41174

Pipeline Safety: Update of Regulatory References to Technical Standards

192.147(a) · cited in rulemaking

69 FR 32886

Pipeline Safety: Periodic Updates to Pipeline Safety Regulations (2001)

192.147(c) · cited in rulemaking

PI-77-021

ADB 77-9 — Pipeline Safety Interpretation

192.147 · interpreted by

Pipetech, Inc. — Pipeline Safety Interpretation

192.147 · interpreted by

ACF Industries, Inc. — Pipeline Safety Interpretation

192.147 · interpreted by

PHMSA GT.2024.01

2024 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection

PHMSA GD.2024.01

2024 Gas Distribution IA Question Set

DC.DPC.FLANGE.R — 192.147(a), 192.147(b), 192.147(c) (+1 more questions) · examined by inspection

PHMSA GT.2023.01

2023 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection

PHMSA GD.2023.01

2023 Gas Distribution IA Question Set

DC.DPC.FLANGE.R — 192.147(a), 192.147(b), 192.147(c) (+1 more questions) · examined by inspection

PHMSA GD.2022.01

2022 Gas Distribution IA Question Set

DC.DPC.FLANGE.R — 192.147(a), 192.147(b), 192.147(c) (+1 more questions) · examined by inspection

PHMSA GT.2022.01

2022 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection

PHMSA GT.2021.01

2021 Gas Transmission IA Question Set

DC.DPC.FLANGE.P — 192.147, 192.147(a), 192.147(b), 192.147(c) (+2 more questions) · examined by inspection