49 CFR § 195.304 - Test pressure.
---
identifier: "/us/cfr/t49/s195.304"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 195.304 - Test pressure."
title_number: 49
title_name: "Transportation"
section_number: "195.304"
section_name: "Test pressure."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "D"
subchapter_name: "PIPELINE SAFETY"
part_number: "195"
part_name: "TRANSPORTATION OF HAZARDOUS LIQUIDS BY PIPELINE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
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: "Amdt. 195-22, 46 FR 38360, July 27, 1981, unless otherwise noted."
cfr_part: "195"
---
# 195.304 Test pressure.
The test pressure for each pressure test conducted under this subpart must be maintained throughout the part of the system being tested for at least 4 continuous hours at a pressure equal to 125 percent, or more, of the maximum operating pressure and, in the case of a pipeline that is not visually inspected for leakage during the test, for at least an additional 4 continuous hours at a pressure equal to 110 percent, or more, of the maximum operating pressure.
[Amdt. 195-51, 59 FR 29384, June 7, 1994. Redesignated by Amdt. 195-65, 63 FR 59480, Nov. 4, 1998]