---
kind: "section"
citation: "46 C.F.R. § 153.1118"
title: "46"
number: "153.1118"
heading: "Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C."
url: "https://uscodex.org/cfr/46/153.1118"
---

# §153.1118. Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C.

- (a) Unless [§ 153.1114](/cfr/46/153.1114.md) allows the prewash to be omitted, a cargo tank from which a Category B NLS is unloaded must be prewashed using the procedures in [§ 153.1120(b)](/cfr/46/153.1120.md?p=b) if the tank—
  - (1) Operates under the interim standard in [§ 153.481(b)](/cfr/46/153.481.md?p=b); or
  - (2) Has a waiver issued under [§ 153.483](/cfr/46/153.483.md).
- (b) Unless [§ 153.1114](/cfr/46/153.1114.md) allows the prewash to be omitted, a cargo tank from which a Category C NLS is unloaded must be prewashed using the procedures in [§ 153.1120(b)](/cfr/46/153.1120.md?p=b) if the tank has a waiver issued under [§ 153.483](/cfr/46/153.483.md).

## Notes

### Source

Source: CGD 81-101, 52 FR 7785, Mar. 12, 1987, unless otherwise noted.

### 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.