46 CFR § 169.627 - Compartments containing diesel fuel tanks.

---
identifier: "/us/cfr/t46/s169.627"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 169.627 - Compartments containing diesel fuel tanks."
title_number: 46
title_name: "Shipping"
section_number: "169.627"
section_name: "Compartments containing diesel fuel tanks."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "R"
subchapter_name: "NAUTICAL SCHOOLS"
part_number: "169"
part_name: "SAILING SCHOOL VESSELS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1321(j); 46 U.S.C. 3306, 6101; Pub. L. 103-206, 107 Stat. 2439; E.O. 11735, 38 FR 21243, 3 CFR, 1971-1975 Comp., p. 793; DHS Delegation 00170.1, Revision No. 01.4; § 169.117 also issued under the authority of 44 U.S.C. 3507."
regulatory_source: "CGD 83-005, 51 FR 896, Jan. 9, 1986, unless otherwise noted."
cfr_part: "169"
---


# 169.627 Compartments containing diesel fuel tanks.

Unless they are adequately ventilated, enclosed compartments or spaces containing diesel fuel tanks and no machinery must be provided with a gooseneck vent of not less than 2
1/2 inches in diameter. The vent opening must not be located adjacent to possible sources of vapor ignition.