---
kind: "section"
citation: "46 C.F.R. § 182.470"
title: "46"
number: "182.470"
heading: "Ventilation of spaces containing diesel fuel tanks."
url: "https://uscodex.org/cfr/46/182.470"
---

# §182.470. Ventilation of spaces containing diesel fuel tanks.

- (a) Unless provided with ventilation that complies with [§ 182.465](/cfr/46/182.465.md), a space containing a diesel fuel tank and no machinery must meet the requirements of this section.
  - (1) A space of 14 cubic meters (500 cubic feet) or more in volume must have a gooseneck vent of not less than 65 millimeters (2.5 inches) in diameter.
  - (2) A space of less than 14 cubic meters (500 cubic feet) in volume must have a gooseneck vent of not less than 40 millimeters (1.5 inches) in diameter.
- (b) Vent openings may not be located adjacent to possible sources of vapor ignition.
- (c) A vessel of not more than 19.8 meters (65 feet) in length, carrying not more than 12 passengers, with ventilation installations in accordance with ABYC H-32 (incorporated by reference; see [46 CFR 175.600](/cfr/46/175.600.md)) will be considered as meeting the requirements of this section.

## Notes

### Amendments

[CGD 85-080, 61 FR 986, Jan. 10, 1996, as amended by USCG-2003-16630, 73 FR 65209, Oct. 31, 2008]

### Authority

Authority: 46 U.S.C. 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 85-080, 61 FR 986, Jan. 10, 1996, unless otherwise noted.

### Amendments

[CGD 85-080, 61 FR 986, Jan. 10, 1996, as amended by USCG-2003-16630, 73 FR 65209, Oct. 31, 2008]