U.S. Code of Federal Regulations

Regulations most recently checked for updates: Feb 24, 2020

§ 176.84 - Other requirements for stowage, cargo handling, and segregation for cargo vessels and passenger vessels.

(a) General. When Column 10B of the § 172.101 Table refers to a numbered or alpha-numeric stowage provision for water shipments, the meaning and requirements of that provision are set forth in this section. Terms in quotation marks are defined in § 176.83. Other terms used in the table in this section such as “acids”, “chlorates” and “permanganates” indicate different chemical groups referred to here as segregation groups. Materials falling within a segregation group are considered to have certain similar chemical properties and, although not exhaustive in nature, the materials belonging to each group include those substances identified in section 3.1.4 of the IMDG Code (IBR, see § 171.7 of this subchapter) as set forth in § 176.83(m).

(b) Table of provisions:

Code Provisions
1[Reserved]
2Temperature controlled material.
3Do not stow with high explosives.
4Stow “Separated from” liquid organic materials.
5Stow “Separated from” powdered metals and their compounds.
6Emergency temperature material.
7[Reserved]
8Glass carboys not permitted on passenger vessels.
9Glass carboys not permitted under deck.
10Glass bottles not permitted under deck.
11Keep away from heat and open flame.
12Keep as cool as reasonably practicable. 3
13Keep as dry as reasonably practicable. 3
14For metal drums, stowage permitted under deck on cargo vessels.
15May be stowed in portable magazine or metal locker.
16No other cargo may be stowed in the same hold with this material.
17Segregation same as for flammable gases but “away from” dangerous when wet.
18Prohibited on any vessel carrying explosives (except explosives in Division 1.4, Compatibility group S).
20Segregation same as for corrosives.
21Segregation same as for flammable liquids.
22Segregation same as for flammable liquids if flash point is below 60 °C (140 °F).
23Segregation same as for flammable liquids if flash point is between 23 °C (73 °F) and 60 °C (140 °F).
24Segregation same as for flammable solids.
25Protected from sources of heat
26Stow “away from” acids. 2
27Stow “away from” alkaline compounds. 2
28Stow “away from” flammable liquids.
29Stow “away from” ammonium compounds.
30Stow “away from” animal or vegetable oils.
31Stow “away from” combustible materials.
32Stow “away from” copper, its alloys and its salts.
33Stow “away from” fluorides.
34Stow “away from” foodstuffs.
35Stow “away from” all odor-absorbing cargo.
36Stow “away from” heavy metals and their compounds.
37Stow “away from” hydrazine.
38Stow “away from” all other corrosives.
39Stow “away from” liquid halogenated hydrocarbons.
40Stow “clear of living quarters”.
41Stow “away from” mercury and its compounds.
42Stow “away from” nitric acids and perchloric acids not exceeding 50 percent acid by weight.
43Stow “away from” organic materials.
44Stow “away from” oxidizers.
45Stow “away from” permanganates.
46Stow “away from” powdered metals.
47Stow “away from” sodium compounds.
49Stow “away from” corrosives.
51Stow “separated from” acetylene.
52Stow “separated from” acids. 1 2
53Stow “separated from” alkaline compounds. 2
54Stow “separated from” animal or vegetable oils.
55Stow “separated from” ammonia.
56Stow “separated from” ammonium compounds.
57Stow “separated from” chlorine.
58Stow “separated from” cyanides.
59Stow “separated from” combustible materials.
60Stow “separated from” chlorates, chlorites, hypochlorites, nitrites, perchlorates, permanganates, and metallic powders.
61Stow “separated from” corrosive materials.
62Stow “separated from” diborane.
63Stow “separated from” diethylene triamine.
64Stow “separated from” explosives.
65Stow “separated from” flammable substances.
66Stow “separated from” flammable solids.
67Stow “separated from” halides.
68Stow “separated from” hydrogen.
69Stow “separated from” hydrogen peroxide.
70Stow “separated from” mercury salts.
71Stow “separated from” nitric acid.
72Stow “separated from” nitrogen compounds.
73Stow “separated from” chlorates.
74Stow “separated from” oxidizers.
75Stow “separated from” permanganates.
76Stow “separated by a complete compartment or hold from” organic peroxides.
77Stow “separated longitudinally by a complete compartment or hold from” explosives.
78Stow “separated longitudinally by an intervening complete compartment or hold from” explosives.
79The maximum net quantity in one package for this material shipped aboard a passenger vessel is limited to 22.7 kg (50 pounds).
80Toy torpedoes must not be packed with other special fireworks.
81Under deck stowage permitted only if an indicating substance such as chloropicrin has been added.
82Under deck stowage is permitted only if containing not more than 36 percent by weight of hydrazine.
83[Reserved]
84Under deck stowage must be in well-ventilated space.
85Under deck stowage must be in mechanically ventilated space.
86Stow “separated by a complete compartment or hold from” explosives Division 1.3.
87Stow “separated from” Class 1 (explosives) except Division 1.4.
88Stow “separated by a complete compartment or hold from” Class 1 (explosives) except Division 1.4.
89Segregation same as for oxidizers.
90Stow “separated from” radioactive materials.
91Stow “separated from” flammable liquids.
92Stow “separated from” powdered materials.
93Stow not accessible to unauthorized persons on passenger vessels.
94Plastic jerricans and plastic drums not permitted under deck.
95Stow “separated from” foodstuffs.
96Glass carboys not permitted under deck on passenger vessels.
97Stow “away from” azides.
98Stow “away from” all flammable materials.
99Only new metal drums permitted on passenger vessels.
100Stow “away from” flammable solids.
101Stow “separated from” iron oxide.
102Stow “separated from” all odor absorbing cargoes.
103Only to be loaded under dry weather conditions.
104Stow “separated from” bromine.
105As approved by the Competent Authority of the country concerned.
106Stow “separated from” powdered metal.
107Stow “separated from” peroxides and superoxides.
108The transport temperature should be indicated on the tank.
109Label as a flammable liquid if flash point is 60 °C (140 °F) or below.
110Packaging Group II if concentration does not exceed 70 percent acid.
111If concentration exceeds 50 percent acid, notes 66, 74, 89, and 90 apply.
112Packaging Group II for concentrations not less that 50 percent and Packaging Group III for concentrations less than 50 percent.
113Packaging Group II if concentrations does not exceed 60 percent acid.
114Corrosive subsidiary risk label required unless concentration is less than 80 percent.
115If packaged in glass or earthenware inner packagings in wooden or fiberboard outer packagings, the maximum quantity on any vessel is 500 kg (equivalent to 450 L).
116In a cargo space capable of being opened up in an emergency. The possible need to open hatches in case of fire to provide maximum ventilation and to apply water in an emergency and the consequent risk to the stability of the ship through flooding of the cargo space should be considered before loading.
117In a clean cargo space capable of being opened up in an emergency. In the case of bagged fertilizer in freight containers, it is sufficient if in the case of an emergency, the cargo is accessible through free approaches (hatch entries) and mechanical ventilation enables the master to exhaust any gases or fumes resulting from decomposition. The possible need to open hatches in case of fire to provide maximum ventilation and to apply water in an emergency and the consequent risk to the stability of the ship through flooding of the cargo space should be considered before loading.
118Stowage - Category D, Category E freight containers and pallet boxes only. Ventilation may be required. The possible need to open hatches in a case of fire to provide maximum ventilation and to supply water in an emergency, and the consequent risk to the stability of the ship through flooding of the cargo space, should be considered before loading.
119Double strip stowage recommended.
120Provide good surface and through ventilation.
121Packaging group III when the flash point of the flammable liquid is 23 °C (73 °F) or above.
122Stow “separated from” infectious substances.
123Stow “away from” infectious substances.
124Stow “separated from” bromates.
125Segregation same as for flammable liquids, but also “away from” flammable solids.
126Segregation same as for Class 9, miscellaneous hazardous materials.
127For packages carrying a subsidiary risk of Class 1 (explosives), segregation same as for Class 1, Division 1.3.
128Stow in accordance with the IMDG Code, Sub-section 7.6.2.7.2 (incorporated by reference; see § 171.7 of this subchapter).
129Stowage Category A applies, except for uranyl nitrate hexahydrate solution for which Category D applies.
130Stowage Category A applies, except for uranyl nitrate hexahydrate solution, uranium metal hexahydrate solution, uranium metal pyrophoric and thorium metal pyrophoric for which Category D applies.
131Stowage Category A applies, except for uranyl nitrate hexahydrate solution, uranium metal pyrophoric and thorium metal pyrophoric for which Category D applies, and taking into account any supplementary requirements specified in the transport documents.
132Stowage A applies, taking into account any supplementary requirements specified in the transport documents.
133Stow “separated from” sulfur.
134Stow “separated from” UN2716.
135Stow “Separated from” mercury and mercury compounds.
136Stow “Separated from” carbon tetrachloride.
137For arsenic sulphides, Stow “separated from” acids.
138Stow “Separated from” peroxides.
141Stow “away from” radioactive materials.
142Packages in cargo transport units must be stowed so as to allow for adequate air circulation throughout the cargo.
144When stowed under deck, mechanical ventilation shall be in accordance with SOLAS, Chapter II-2/Regulation 19 (IBR, see § 171.7 of this subchapter) for flammable liquids with flashpoint below 23 °C (73 °F).
145Stow “separated from” ammonium compounds except for UN1444.
146Category B stowage applies for unit loads in open cargo transport units.
147Stow “separated from” flammable gases and flammable liquids.
148In addition: from flammable gases and flammable liquids when stowed on deck of a containership a minimum distance of two container spaces athwartship shall be maintained, when stowed on ro-ro ships a distance of 6 m athwartship shall be maintained.
149For engines or machinery containing fuels with flash point equal or greater than 23 °C (73.4 °F), stowage Category A.
150For uranium metal pyrophoric and thorium metal pyrophoric stowage, category D applies.
M1 - M6[Reserved]

1 For waste cyanides or waste cyanide mixtures or solutions, refer to § 173.12(e) of this subchapter.

2 Class 8 materials in PG II or III that otherwise are required to be segregated from one another may be transported in the same cargo transport unit, whether in the same packaging or not, provided the substances do not react dangerously with each other to cause combustion and/or evolution of considerable heat, or of flammable, toxic or asphyxiant gases, or the formation of corrosive or unstable substances; and the package does not contain more than 30 L (7.8 gallons) for liquids or 30 kg (66 lbs.) for solids.

3 These requirements apply to the loading of hazardous materials in cargo transport units as well as the stowage of cargo transport units.

(c) Provisions for the stowage of Class 1 (explosive) materials: (1) Explosive substances and explosive articles must be stowed in accordance with Column (10A) and Column (10B) of the 172.101 Table of this subchapter.

(2) The following notes in column 10B of the § 172.101 Table apply to the transport of Class 1 (explosive) materials by vessel:

Notes Provisions
5EStow “away from” lead and its compounds.
14EOn deck, cargo transport unit must be steel.
15EOn deck, cargo transport unit must be leakproof.
17EOn deck stowage is recommended.
19E“Away from” explosives containing chlorates or perchlorates.
21ECargo space ventilation must be carefully controlled to avoid excessive condensation.
22E“Away from” ammonium compounds and explosives containing ammonium compounds or salts.
23E“Separated from” Division 1.4 and “separated longitudinally by an intervening complete compartment or hold from” Division 1.1, 1.2, 1.3, 1.5, and 1.6 except from explosives of compatibility group J.
26EFor closed cargo transport units, a non-metallic lining is required when not in effectively sealed, sift-proof packages.
27EFor closed cargo transport units, a non-metallic lining is required.
[Amdt. 176-30, 55 FR 52693, Dec. 21, 1990, as amended at 56 FR 66282, Dec. 20, 1991; Amdt. 176-43, 62 FR 24742, May 6, 1997; 66 FR 33438, June 21, 2001; 66 FR 45185, 45384, Aug. 28, 2001; 67 FR 15744, Apr. 3, 2002; 68 FR 45040, July 31, 2003; 69 FR 76183, Dec. 20, 2004; 70 FR 3310, Jan. 24, 2005; 71 FR 78634, Dec. 29, 2006; 74 FR 2268, Jan. 14, 2009; 76 FR 3384, Jan. 19, 2011; 78 FR 1094, Jan. 7, 2013; 80 FR 1165, Jan. 8, 2015; 82 FR 15893, Mar. 30, 2017]