---
kind: "section"
citation: "46 C.F.R. § 154.1838"
title: "46"
number: "154.1838"
heading: "Discharge by gas pressurization."
url: "https://uscodex.org/cfr/46/154.1838"
---

# §154.1838. Discharge by gas pressurization.


The person in charge of cargo transfer may not authorize cargo discharge by gas pressurization unless:

- (a) The tank to be offloaded is an independent tank type B or C;
- (b) The pressurizing medium is the cargo vapor or a nonflammable, nontoxic gas that is inert with the cargo; and
- (c) **The pressurizing line has—**
  - (1) A pressure reducing valve that has a setting that is 90 percent or less of the tank's relief valve setting; and
  - (2) **A manual control valve between the pressure reducing valve and the tank.**

## Notes

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.