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Subpart A—General10

Subpart B—Siting Requirements7

Subpart C—Design16

Subpart D—Construction6

Subpart E—Equipment5

Subpart F—Operations11

Subpart G—Maintenance20

Subpart H—Personnel Qualifications and Training10

Subpart I—Fire Protection2

Subpart J—Security9

Regulationcurrent

49 CFR 193.2631

Internal corrosion control.

Current as of 2026-08-18 Government source

eCFR editorial compilationAuthoritative but unofficial

View source

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.#

Treatment labels are shown only when backed by an indexed source relationship. Event dates link to official evidence.

enforces

enforces

mentions

mentions

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

Evidence

mentions

PHMSA LNG.2025.01

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

Evidence

mentions

PHMSA LNG.2024.01

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

Evidence

mentions

PHMSA LNG.2023.01

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

Evidence

mentions

PHMSA LNG.2022.01

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

Evidence

mentions

PHMSA LNG.2021.01

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

Evidence

2025-10-01snapshot

Official annual CFR edition 2025-10-01

2024-10-01snapshot

Official annual CFR edition 2024-10-01

2023-10-01snapshot

Official annual CFR edition 2023-10-01

2023-04-10amended

§ 193.2631 Internal corrosion control. version event

2022-10-01snapshot

Official annual CFR edition 2022-10-01

2021-10-01snapshot

Official annual CFR edition 2021-10-01

2020-10-01snapshot

Official annual CFR edition 2020-10-01

2019-10-01snapshot

Official annual CFR edition 2019-10-01

2018-10-01snapshot

Official annual CFR edition 2018-10-01

2017-10-01snapshot

Official annual CFR edition 2017-10-01

2017-01-01amended

§ 193.2631 Internal corrosion control. version event

2016-10-01snapshot

Official annual CFR edition 2016-10-01

2015-10-01snapshot

Official annual CFR edition 2015-10-01

2014-10-01snapshot

Official annual CFR edition 2014-10-01

2013-10-01snapshot

Official annual CFR edition 2013-10-01

2012-10-01snapshot

Official annual CFR edition 2012-10-01

2011-10-01snapshot

Official annual CFR edition 2011-10-01

2010-10-01snapshot

Official annual CFR edition 2010-10-01

2009-10-01snapshot

Official annual CFR edition 2009-10-01

2008-10-01snapshot

Official annual CFR edition 2008-10-01

2007-10-01snapshot

Official annual CFR edition 2007-10-01

2006-10-01snapshot

Official annual CFR edition 2006-10-01

2005-10-01snapshot

Official annual CFR edition 2005-10-01

2004-10-01snapshot

Official annual CFR edition 2004-10-01

2003-10-01snapshot

Official annual CFR edition 2003-10-01

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Record details

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

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