46 CFR § 61.30-1 - Scope.

---
identifier: "/us/cfr/t46/s61.30-1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 61.30-1 - Scope."
title_number: 46
title_name: "Shipping"
section_number: "61.30-1"
section_name: "Scope."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "F"
subchapter_name: "MARINE ENGINEERING"
part_number: "61"
part_name: "PERIODIC TESTS AND INSPECTIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "43 U.S.C. 1333; 46 U.S.C. 2103, 3306, 3307, 3703; sec. 617, Pub. L. 111-281, 124 Stat. 2905; E.O. 12234, 45 FR 58801, 3 CFR 1980 Comp., p. 277; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.3."
regulatory_source: "CGFR 68-82, 33 FR 18890, Dec. 18, 1968, unless otherwise noted."
cfr_part: "61"
---


# 61.30-1 Scope.

The term *thermal fluid heater* as used in this part includes any fired automatic auxiliary heating unit which uses a natural or synthetic fluid in the liquid phase as the heat exchange medium and whose operating temperature and pressure do not exceed 204 °C (400 °F) and 225 psig, respectively. Thermal fluid heaters having operating temperatures and pressures higher than 204 °C (400 °F) and 225 psig, respectively, are inspected under subpart 61.05.

[CGFR 68-82, 33 FR 18890, Dec. 18, 1968, as amended by USCG-2020-0634, 89 FR 50189, June 12, 2024]