---
kind: "section"
citation: "46 C.F.R. § 128.420"
title: "46"
number: "128.420"
heading: "Keel cooler installations."
url: "https://uscodex.org/cfr/46/128.420"
---

# §128.420. Keel cooler installations.

- (a) Except as provided by this section, each keel cooler installation must comply with [§ 56.50-96](/cfr/46/56.50-96.md) of this chapter.
- (b) Approved metallic flexible connections may be located below the deepest-load waterline if the system is a closed loop below the waterline and if its vent is located above the waterline.
- (c) Fillet welds may be used in the attachment of channels and half-round pipe sections to the bottom of the vessel.
- (d) Short lengths of approved non-metallic flexible hose fixed by metallic or non-metallic hose-clamps may be used at machinery connections if—
  - (1) The clamps are of a corrosion-resistant material;
  - (2) The clamps do not depend on spring tension for their holding power; and
  - (3) Two of the clamps are used on each end of the hose, except that one clamp may be used on an end expanded or beaded to provide a positive stop against hose slippage.
  - (4) **The clamps are resistant to vibration, high temperature, and brittleness.**

## Notes

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49331, Sept. 19, 1997, as amended by USCG-2000-7790, 65 FR 58463, Sept. 29, 2000]

### Authority

Authority: 46 U.S.C. 3306; sec. 617, Pub. L. 111-281, 124 Stat. 2905; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 82-004 and CGD 86-074, 62 FR 49331, Sept. 19, 1997, unless otherwise noted.

### Amendments

[CGD 82-004 and CGD 86-074, 62 FR 49331, Sept. 19, 1997, as amended by USCG-2000-7790, 65 FR 58463, Sept. 29, 2000]