---
kind: "section"
citation: "46 C.F.R. § 32.56-40"
title: "46"
number: "32.56-40"
heading: "Category A machinery spaces: Insulation—T/ALL."
url: "https://uscodex.org/cfr/46/32.56-40"
---

# §32.56-40. Category A machinery spaces: Insulation—T/ALL.


Structural insulation within category A machinery spaces must have a barrier such as metal foil, sheet metal, cementitious coating, or other vapor barrier so that the surface of that insulation is impervious to oil and oil vapors.


## Notes

### Amendments

[CGD 74-127, 41 FR 3844, Jan. 26, 1976, as amended by CGD 74-127, 41 FR 4826, Feb. 2, 1976]

### Source

Source: CGD 74-127, 41 FR 3844, Jan. 26, 1976, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 2103, 3306, 3703, 3719; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.4; Subpart 32.59 also issued under the authority of Sec. 4109, Pub. L. 101-380, 104 Stat. 515.

### Source

Source: CGFR 65-50, 30 FR 16671, Dec. 30, 1965, unless otherwise noted.

### Amendments

[CGD 74-127, 41 FR 3844, Jan. 26, 1976, as amended by CGD 74-127, 41 FR 4826, Feb. 2, 1976]