---
kind: "section"
citation: "46 C.F.R. § 154.1340"
title: "46"
number: "154.1340"
heading: "Temperature measuring devices."
url: "https://uscodex.org/cfr/46/154.1340"
---

# §154.1340. Temperature measuring devices.

- (a) Each cargo tank must have devices that measure the temperature:
  - (1) At the bottom of the tank; and
  - (2) Near the top of the tank and below the maximum liquid level allowed under [§ 154.1844](/cfr/46/154.1844.md).
- (b) Each device required by [paragraph (a)](#a) must have a readout at the cargo control station.
- (c) Except for independent tanks type C, each cargo containment system for a design temperature colder than −55 °C (−67 °F) must have temperature measuring devices that meet the following:
  - (1) The number and location of the devices must be specially approved by the Commandant (CG-OES).
  - (2) The devices must be within the cargo tank's insulation or on the adjacent hull structure.
  - (3) Each device must show the temperature continuously or at regular intervals of one hour or less.
  - (4) Each device must actuate an audible and visual alarm at the cargo control station and a remote group alarm in the wheelhouse before the temperature of the steel of the adjacent hull structure is cooled below the lowest temperature allowed for the steel under [§ 154.172](/cfr/46/154.172.md).
- (d) For each cargo tank with a design temperature colder than −55 °C (−67 °F), the number and arrangement of the devices that show the temperature of the tank during cool down procedures must be specially approved by the Commandant (CG-OES).

## Notes

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

### 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.

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]