46 CFR § 153.438 - Cargo pressure or temperature alarms required.
---identifier: "/us/cfr/t46/s153.438"source: "ecfr"legal_status: "authoritative_unofficial"title: "46 CFR § 153.438 - Cargo pressure or temperature alarms required."title_number: 46title_name: "Shipping"section_number: "153.438"section_name: "Cargo pressure or temperature alarms required."chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"subchapter_number: "O"subchapter_name: "CERTAIN BULK DANGEROUS CARGOES"part_number: "153"part_name: "SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS"positive_law: falsecurrency: "2026-04-05"last_updated: "2026-04-05"format_version: "1.1.0"generator: "[email protected]"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)."regulatory_source: "CGD 73-96, 42 FR 49027, Sept. 26, 1977, unless otherwise noted."cfr_part: "153"---
Identifier
/us/cfr/t46/s153.438
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Coast Guard, Department of Homeland Security
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... 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).
# 153.438 Cargo pressure or temperature alarms required.(a) Each refrigerated tank must have:(1) An alarm that operates when the cargo's pressure exceeds the vapor pressure described in § 153.371(b); or(2) An alarm that operates when the cargo's temperature exceeds the steady state temperature described in § 153.371(b).(b) The alarm must give an audible and visual signal on the bridge and at the cargo control station.(c) The cargo pressure or temperature alarm must be independent of other cargo pressure or temperature sensing arrangements.