46 CFR § 119.710 - Piping for vital systems.

---
identifier: "/us/cfr/t46/s119.710"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 119.710 - Piping for vital systems."
title_number: 46
title_name: "Shipping"
section_number: "119.710"
section_name: "Piping for vital systems."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "K"
subchapter_name: "SMALL PASSENGER VESSELS CARRYING MORE THAN 150 PASSENGERS OR WITH OVERNIGHT ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS"
part_number: "119"
part_name: "MACHINERY INSTALLATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation No. 00170.1, Revision No. 01.3."
regulatory_source: "CGD 85-080, 61 FR 922, Jan. 10, 1996, unless otherwise noted."
cfr_part: "119"
---


# 119.710 Piping for vital systems.

(a) Vital systems are those systems that are vital to a vessel's survivability and safety. For the purpose of this part the following are vital systems:

(1) Fuel systems;

(2) Fire main;

(3) Carbon dioxide, Halon 1301, and clean agent systems;

(4) Bilge system;

(5) Steering system;

(6) Propulsion system and its necessary auxiliaries and controls;

(7) Ship's service and emergency electrical generation system and its necessary auxiliaries; and

(8) A marine engineering system identified by the cognizant OCMI as being crucial to the survival of the vessel or to the protection of the personnel on board.

(b) For the purpose of this part, a system not identified in paragraph (a) of this section is a non-vital system.

(c) Piping used in a vital system must meet § 56.60 in subchapter F of this chapter, except that § 119.730 of this part replaces § 56.60-20 in subchapter F of this chapter.

[CGD 85-080, 61 FR 922, Jan. 10, 1996, as amended by USCG-2006-24797, 77 FR 33883, June 7, 2012]