46 CFR § 148.140 - Stowage and segregation for materials of Class 5.1.

---
identifier: "/us/cfr/t46/s148.140"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 148.140 - Stowage and segregation for materials of Class 5.1."
title_number: 46
title_name: "Shipping"
section_number: "148.140"
section_name: "Stowage and segregation for materials of Class 5.1."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "N"
subchapter_name: "DANGEROUS CARGOES"
part_number: "148"
part_name: "CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1602; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; 46 U.S.C. 3306, 5111; 49 U.S.C. 5103; Department of Homeland Security Delegation No. 0170.1."
regulatory_source: "75 FR 64591, Oct. 19, 2010, unless otherwise noted."
cfr_part: "148"
---


# 148.140 Stowage and segregation for materials of Class 5.1.

(a) Class 5.1 materials listed in Table 148.10 of this part must—

(1) Be kept as cool and dry as practical before loading;

(2) Be stowed away from all sources of heat or ignition; and

(3) Be stowed separate from foodstuffs and all readily combustible materials.

(b) Special care must be taken to ensure that holds containing Class 5.1 materials are clean and, whenever practical, only noncombustible securing and protecting materials are used.

(c) Class 5.1 materials must be prevented from entering bilges or other cargo holds.