49 CFR § 192.459 - External corrosion control: Examination of buried pipeline when exposed.
---
identifier: "/us/cfr/t49/s192.459"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 192.459 - External corrosion control: Examination of buried pipeline when exposed."
title_number: 49
title_name: "Transportation"
section_number: "192.459"
section_name: "External corrosion control: Examination of buried pipeline when exposed."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "192"
part_name: "TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 and 49 CFR 1.97."
regulatory_source: "35 FR 13257, Aug. 19, 1970, unless otherwise noted."
cfr_part: "192"
---
# 192.459 External corrosion control: Examination of buried pipeline when exposed.
Whenever an operator has knowledge that any portion of a buried pipeline is exposed, the exposed portion must be examined for evidence of external corrosion if the pipe is bare, or if the coating is deteriorated. If external corrosion requiring remedial action under §§ 192.483 through 192.489 is found, the operator shall investigate circumferentially and longitudinally beyond the exposed portion (by visual examination, indirect method, or both) to determine whether additional corrosion requiring remedial action exists in the vicinity of the exposed portion.
[Amdt. 192-87, 64 FR 56981, Oct. 22, 1999]