---
kind: "section"
citation: "46 C.F.R. § 119.470"
title: "46"
number: "119.470"
heading: "Ventilation of spaces containing diesel fuel tanks."
url: "https://uscodex.org/cfr/46/119.470"
---

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

- (a) Unless provided with ventilation that complies with [§ 119.465](/cfr/46/119.465.md) of this part, a space containing a diesel fuel tank and no machinery must meet one of the following requirements:
  - (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; or
  - (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.

## Notes

### Authority

Authority: 46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.3.

### Source

Source: CGD 85-080, 61 FR 922, Jan. 10, 1996, unless otherwise noted.