---
kind: "section"
citation: "46 C.F.R. § 30.10-6a"
title: "46"
number: "30.10-6a"
heading: "Category A machinery space—TB/ALL."
url: "https://uscodex.org/cfr/46/30.10-6a"
---

# §30.10-6a. Category A machinery space—TB/ALL.


The term Category A machinery space means any space and trunks and ducts to such a space that contains:

- (a) Internal combustion machinery used for main propulsion;
- (b) Internal combustion machinery used for purposes other than main propulsion where the total aggregate power is at least 500 brake horsepower;
- (c) Internal combustion machinery that uses a fuel that has a flash point of less than 43.3°C (110°F); or
- (d) **One or more oil fired boilers or oil fuel units.**

## Notes

### Amendments

[CGD 74-127, 41 FR 3842, Jan. 26, 1976]

### Authority

Authority: 46 U.S.C. 2103, 3306, 3703; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGFR 65-50, 30 FR 16657, Dec. 30, 1965, unless otherwise noted.

### Amendments

[CGD 74-127, 41 FR 3842, Jan. 26, 1976]