---
kind: "section"
citation: "46 C.F.R. § 153.515"
title: "46"
number: "153.515"
heading: "Special requirements for extremely flammable cargoes."
url: "https://uscodex.org/cfr/46/153.515"
---

# §153.515. Special requirements for extremely flammable cargoes.


When Table 1 refers to this section:

- (a) An enclosed space containing a cargo tank must have an inerting system that meets the requirements in [§ 153.500](/cfr/46/153.500.md) applying to the inert gas system of a containment system;
- (b) Cargo discharge pumps must be of a type that does not subject the shaft gland to the cargo under pressure or that is submerged; and
- (c) The cargo tank's relief valve setting must be no less than 21 kPa gauge (approx. 3 psig).

## Notes

### Authority

Authority: 46 U.S.C. 3703; Department of Homeland Security Delegation No. 0170.1. Section 153.40 issued under 49 U.S.C. 5103. Sections 153.470 through 153.491, 153.1100 through 153.1132, and 153.1600 through 153.1608 also issued under 33 U.S.C. 1903 (b).

### Source

Source: CGD 73-96, 42 FR 49027, Sept. 26, 1977, unless otherwise noted.