---
kind: "section"
citation: "33 C.F.R. § 157.128"
title: "33"
number: "157.128"
heading: "Stripping system."
url: "https://uscodex.org/cfr/33/157.128"
---

# §157.128. Stripping system.

- (a) Each tank vessel having a COW system under [§ 157.10(e)](/cfr/33/157.10.md?p=e), [§ 157.10a(a)(2)](/cfr/33/157.10a.md?p=a-2), or [§ 157.10c(b)(2)](/cfr/33/157.10c.md?p=b-2) must have a stripping system that is designed to remove crude oil from—
  - (1) Each cargo tank at 1.25 times the rate at which all the COW machines that are designed to simultaneously wash the bottom of the tank, are operating; and
  - (2) The bottom of each tank to allow the tank vessel to pass the inspection under [§ 157.140(a)(2)](/cfr/33/157.140.md?p=a-2).
- (b) Each cargo tank must be designed to allow the level of crude oil in the tank to be determined by:
  - (1) Hand dipping at the aftermost portion of the tank and three other locations; or
  - (2) Any other means accepted by the Commandant.
- (c) Each stripping system must have at least one of the following devices for stripping oil from each cargo tank:
  - (1) **A positive displacement pump.**
  - (2) **A self-priming centrifugal pump.**
  - (3) An eductor
  - (4) **Any other device accepted by the Commandant.**
- (d) There must be a means in the stripping system piping between the device under [paragraph (c)](#c) of this section and each cargo tank to isolate each tank from the device.
- (e) If the stripping system has a positive displacement pump or a self-priming centrifugal pump, the stripping system must have the following:
  - (1) **In the stripping system piping—**
    - (i) A pressure gauge at the inlet connection to the pump; and
    - (ii) **A pressure gauge at the discharge connection to the pump.**
  - (2) **At least one of the following monitoring devices to indicate operation of the pump.**
    - (i) **Flow indicator.**
    - (ii) **Stroke counter.**
    - (iii) **Revolution counter.**
- (f) If the stripping system has an eductor, the stripping system must have:
  - (1) A pressure gauge at each driving fluid intake and at each discharge; and
  - (2) **A pressure/vacuum gauge at each suction intake.**
- (g) The equipment required under paragraphs [(e)](#e) and [(f)](#f) of this section must have indicating devices in the cargo control room or another location that is accepted by the Commandant.

## Notes

### Amendments

[CGD 77-058b, 45 FR 43709, June 30, 1980, as amended by CGD 82-28, 50 FR 11627, Mar. 22, 1985]

### Source

Source: CGD 77-058b, 45 FR 43709, June 30, 1980, unless otherwise noted.

### Authority

Authority: 33 U.S.C. 1903; 46 U.S.C. 3703, 3703a (note); Department of Homeland Security Delegation No. 0170.1. Subparts G, H, and I are also issued under section 4115(b), Pub. L. 101-380, 104 Stat. 520; Pub. L. 104-55, 109 Stat. 546.

### Source

Source: CGD 74-32, 40 FR 48283, Oct. 14, 1975, unless otherwise noted.

### Amendments

[CGD 77-058b, 45 FR 43709, June 30, 1980, as amended by CGD 82-28, 50 FR 11627, Mar. 22, 1985]