---
kind: "section"
citation: "46 C.F.R. § 153.1126"
title: "46"
number: "153.1126"
heading: "Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D."
url: "https://uscodex.org/cfr/46/153.1126"
---

# §153.1126. Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D.


NLS residue in a slop tank may not be discharged into the sea unless—

- (a) The ship meets the conditions for discharging the NLS residue from a cargo tank in [§ 153.1128](/cfr/46/153.1128.md); and
- (b) For Category B NLS residue transferred to the slop tank under [§ 153.1119(b)](/cfr/46/153.1119.md?p=b), the NLS is discharged—
  - (1) Through an NLS residue discharge system with the flow recording equipment required in [§ 153.481(b)(2)](/cfr/46/153.481.md?p=b-2) operating; and
  - (2) **At a rate maintained at or below Q in the following—** For tank contents that are miscible

    For tank contents that are immiscible


## 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.