46 CFR § 193.15-17 - Odorizing units.

---
identifier: "/us/cfr/t46/s193.15-17"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 193.15-17 - Odorizing units."
title_number: 46
title_name: "Shipping"
section_number: "193.15-17"
section_name: "Odorizing units."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "U"
subchapter_name: "OCEANOGRAPHIC RESEARCH VESSELS"
part_number: "193"
part_name: "FIRE PROTECTION EQUIPMENT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2213, 3102, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "CGFR 67-83, 33 FR 1145, Jan. 27, 1968, unless otherwise noted."
cfr_part: "193"
---


# 193.15-17 Odorizing units.

Each carbon dioxide extinguishing system installed or altered after July 9, 2013, must have an approved odorizing unit to produce the scent of wintergreen, the detection of which will serve as an indication that carbon dioxide gas is present in a protected area and any other area into which the carbon dioxide may migrate. “Altered” means modified or refurbished beyond the maintenance required by the manufacturer's design, installation, operation and maintenance manual.

[USCG-2006-24797, 77 FR 33893, June 7, 2012]