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49 CFR 193.2631 - Internal corrosion control. | Regulus

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49 CFR Part 193

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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 193 subpartSubpart G—Maintenance

20 sections

Subpart A—General10

§ 193.2001Scope of part.§ 193.2003[Reserved]§ 193.2005Applicability.§ 193.2007Definitions.§ 193.2009Rules of regulatory construction.§ 193.2011Reporting.§ 193.2013What documents are incorporated by reference partly or wholly in this part?§ 193.2015[Reserved]§ 193.2017Plans and procedures.§ 193.2019Mobile and temporary LNG facilities.

Subpart B—Siting Requirements7

§ 193.2051Scope.§ 193.2055[Reserved]§ 193.2057Thermal radiation protection.§ 193.2059Flammable vapor-gas dispersion protection.§ 193.2061-193.2065§§ 193.2061-193.2065 [Reserved]§ 193.2067Wind forces.§ 193.2069-193.2073§§ 193.2069-193.2073 [Reserved]

Subpart C—Design16

§ 193.2101Scope.§ 193.2103-193.2117§§ 193.2103-193.2117 [Reserved]§ 193.2119Records § 193.2121-193.2153§§ 193.2121-193.2153 [Reserved]§ 193.2155Structural requirements.§ 193.2157-193.2159§§ 193.2157-193.2159 [Reserved]§ 193.2161Dikes, general.§ 193.2163-193.2165§§ 193.2163-193.2165 [Reserved]§ 193.2167Covered systems.§ 193.2169-193.2171§§ 193.2169-193.2171 [Reserved]§ 193.2173Water removal.§ 193.2175-193.2179§§ 193.2175-193.2179 [Reserved]§ 193.2181Impoundment capacity: LNG storage tanks.§ 193.2183-193.2185§§ 193.2183-193.2185 [Reserved]§ 193.2187Nonmetallic membrane liner.§ 193.2189-193.2233§§ 193.2189-193.2233 [Reserved]

Subpart D—Construction6

§ 193.2301Scope.§ 193.2303Construction acceptance.§ 193.2304Corrosion control overview.§ 193.2305-193.2319§§ 193.2305-193.2319 [Reserved]§ 193.2321Nondestructive tests.§ 193.2323-193.2329§§ 193.2323-193.2329 [Reserved]

Subpart E—Equipment5

§ 193.2401Scope.§ 193.2403-193.2439§§ 193.2403-193.2439 [Reserved]§ 193.2441Control center.§ 193.2443[Reserved]§ 193.2445Sources of power.

Subpart F—Operations11

§ 193.2501Scope.§ 193.2503Operating procedures.§ 193.2505Cooldown.§ 193.2507Monitoring operations.§ 193.2509Emergency procedures.§ 193.2511Personnel safety.§ 193.2513Transfer procedures.§ 193.2515Investigations of failures.§ 193.2517Purging.§ 193.2519Communication systems.§ 193.2521Operating records.

Subpart G—Maintenance20

§ 193.2601Scope.§ 193.2603General.§ 193.2605Maintenance procedures.§ 193.2607Foreign material.§ 193.2609Support systems.§ 193.2611Fire protection.§ 193.2613Auxiliary power sources.§ 193.2615Isolating and purging.§ 193.2617Repairs.§ 193.2619Control systems.§ 193.2621Testing transfer hoses.§ 193.2623Inspecting LNG storage tanks.§ 193.2625Corrosion protection.§ 193.2627Atmospheric corrosion control.§ 193.2629External corrosion control: buried or submerged components.§ 193.2631Internal corrosion control.§ 193.2633Interference currents.§ 193.2635Monitoring corrosion control.§ 193.2637Remedial measures.§ 193.2639Maintenance records.

Subpart H—Personnel Qualifications and Training10

§ 193.2701Scope.§ 193.2703Design and fabrication.§ 193.2705Construction, installation, inspection, and testing.§ 193.2707Operations and maintenance.§ 193.2709Security.§ 193.2711Personnel health.§ 193.2713Training: operations and maintenance.§ 193.2715Training: security.§ 193.2717Training: fire protection.§ 193.2719Training: records.

Subpart I—Fire Protection2

§ 193.2801Fire protection.§ 193.2803-193.2821§§ 193.2803-193.2821 [Reserved]

Subpart J—Security9

§ 193.2901Scope.§ 193.2903Security procedures.§ 193.2905Protective enclosures.§ 193.2907Protective enclosure construction.§ 193.2909Security communications.§ 193.2911Security lighting.§ 193.2913Security monitoring.§ 193.2915Alternative power sources.§ 193.2917Warning signs.

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Subpart A—General10

§ 193.2001Scope of part.§ 193.2003[Reserved]§ 193.2005Applicability.§ 193.2007Definitions.§ 193.2009Rules of regulatory construction.§ 193.2011Reporting.§ 193.2013What documents are incorporated by reference partly or wholly in this part?§ 193.2015[Reserved]§ 193.2017Plans and procedures.§ 193.2019Mobile and temporary LNG facilities.

Subpart B—Siting Requirements7

§ 193.2051Scope.§ 193.2055[Reserved]§ 193.2057Thermal radiation protection.§ 193.2059Flammable vapor-gas dispersion protection.§ 193.2061-193.2065§§ 193.2061-193.2065 [Reserved]§ 193.2067Wind forces.§ 193.2069-193.2073§§ 193.2069-193.2073 [Reserved]

Subpart C—Design16

§ 193.2101Scope.§ 193.2103-193.2117§§ 193.2103-193.2117 [Reserved]§ 193.2119Records § 193.2121-193.2153§§ 193.2121-193.2153 [Reserved]§ 193.2155Structural requirements.§ 193.2157-193.2159§§ 193.2157-193.2159 [Reserved]§ 193.2161Dikes, general.§ 193.2163-193.2165§§ 193.2163-193.2165 [Reserved]§ 193.2167Covered systems.§ 193.2169-193.2171§§ 193.2169-193.2171 [Reserved]§ 193.2173Water removal.§ 193.2175-193.2179§§ 193.2175-193.2179 [Reserved]§ 193.2181Impoundment capacity: LNG storage tanks.§ 193.2183-193.2185§§ 193.2183-193.2185 [Reserved]§ 193.2187Nonmetallic membrane liner.§ 193.2189-193.2233§§ 193.2189-193.2233 [Reserved]

Subpart D—Construction6

§ 193.2301Scope.§ 193.2303Construction acceptance.§ 193.2304Corrosion control overview.§ 193.2305-193.2319§§ 193.2305-193.2319 [Reserved]§ 193.2321Nondestructive tests.§ 193.2323-193.2329§§ 193.2323-193.2329 [Reserved]

Subpart E—Equipment5

§ 193.2401Scope.§ 193.2403-193.2439§§ 193.2403-193.2439 [Reserved]§ 193.2441Control center.§ 193.2443[Reserved]§ 193.2445Sources of power.

Subpart F—Operations11

§ 193.2501Scope.§ 193.2503Operating procedures.§ 193.2505Cooldown.§ 193.2507Monitoring operations.§ 193.2509Emergency procedures.§ 193.2511Personnel safety.§ 193.2513Transfer procedures.§ 193.2515Investigations of failures.§ 193.2517Purging.§ 193.2519Communication systems.§ 193.2521Operating records.

Subpart G—Maintenance20

§ 193.2601Scope.§ 193.2603General.§ 193.2605Maintenance procedures.§ 193.2607Foreign material.§ 193.2609Support systems.§ 193.2611Fire protection.§ 193.2613Auxiliary power sources.§ 193.2615Isolating and purging.§ 193.2617Repairs.§ 193.2619Control systems.§ 193.2621Testing transfer hoses.§ 193.2623Inspecting LNG storage tanks.§ 193.2625Corrosion protection.§ 193.2627Atmospheric corrosion control.§ 193.2629External corrosion control: buried or submerged components.§ 193.2631Internal corrosion control.§ 193.2633Interference currents.§ 193.2635Monitoring corrosion control.§ 193.2637Remedial measures.§ 193.2639Maintenance records.

Subpart H—Personnel Qualifications and Training10

§ 193.2701Scope.§ 193.2703Design and fabrication.§ 193.2705Construction, installation, inspection, and testing.§ 193.2707Operations and maintenance.§ 193.2709Security.§ 193.2711Personnel health.§ 193.2713Training: operations and maintenance.§ 193.2715Training: security.§ 193.2717Training: fire protection.§ 193.2719Training: records.

Subpart I—Fire Protection2

§ 193.2801Fire protection.§ 193.2803-193.2821§§ 193.2803-193.2821 [Reserved]

Subpart J—Security9

§ 193.2901Scope.§ 193.2903Security procedures.§ 193.2905Protective enclosures.§ 193.2907Protective enclosure construction.§ 193.2909Security communications.§ 193.2911Security lighting.§ 193.2913Security monitoring.§ 193.2915Alternative power sources.§ 193.2917Warning signs.

Related 10 Definitions History 30 Authority 34

RegulationsTitle 49Subtitle BChapter ISubchapter DPart 193Subpart G—Maintenance49 CFR 193.2631

Regulationcurrent

49 CFR 193.2631

Internal corrosion control.

Current as of 2026-08-18 Government source

eCFR editorial compilationAuthoritative but unofficial

3 passages

Each component that is subject to internal corrosive attack must be protected from internal corrosion by—#

(a)Material that has been designed and selected to resist the corrosive fluid involved; or#

(b)Suitable coating, inhibitor, or other means.#

Previous§ 193.2629 Next§ 193.2633

On this page

(a)Material that has been designed and selected to resist the corrosive fluid involved; or (b)Suitable coating, inhibitor, or other means.

Related 10 Definitions History 30 Authority 34 Community

Only explicit, source-backed relationships are shown.

Regulations1

LAC 43:XIII §7931

Internal Corrosion Control [49 CFR 193.2631]

193.2631(a) · incorporates or references

Inspection6

PHMSA LNG.2026.01

2026 LNG IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

PHMSA LNG.2025.01

2025 Lng IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

PHMSA LNG.2024.01

2024 Lng IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

PHMSA LNG.2023.01

2023 Lng IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

PHMSA LNG.2022.01

2022 Lng IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

PHMSA LNG.2021.01

2021 Lng IA Question Set

DC.TD.CORRINTERNAL.P — 193.2631(a), 193.2631(b) (+3 more questions) · examined by inspection

Enforcement2

CPF 42026022NOA

FLORIDA CITY GAS — Notice of Amendment

193.2631 · cited in enforcement

CPF 520183003M

FAIRBANKS NATURAL GAS — Notice of Amendment

193.2631 · cited in enforcement

Special permits1

PHMSA-2018-0042

Golden Pass LNG — Pipeline Special Permit

193.2631 · special permit cites

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Claims link back to retrieved source passages.

Record details

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

c7874c169c7a30129d…