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Electronic Code of Federal Regulations

e-CFR data is current as of December 10, 2019

Title 46Chapter ISubchapter NPart 148 → Subpart D


Title 46: Shipping
PART 148—CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING


Subpart D—Stowage and Segregation


Contents
§148.120   Stowage and segregation requirements.
§148.125   Stowage and segregation for materials of Class 4.1.
§148.130   Stowage and segregation for materials of Class 4.2.
§148.135   Stowage and segregation for materials of Class 4.3.
§148.140   Stowage and segregation for materials of Class 5.1.
§148.145   Stowage and segregation for materials of Class 7.
§148.150   Stowage and segregation for materials of Class 9.
§148.155   Stowage and segregation for potentially dangerous materials.

§148.120   Stowage and segregation requirements.

(a) Each material listed in Table 148.10 of this part must be segregated from incompatible materials in accordance with—

(1) The requirements of Tables 148.120A and 148.120B of this section that pertain to the primary or subsidiary hazard class to which the materials belong. Whenever a subsidiary hazard may exist, the most stringent segregation requirement applies; and

(2) Any specific requirements in Subpart D of this part.

(b) Materials that are required to be separated during stowage must not be handled at the same time. Any residue from a material must be removed before a material required to be separated from it is loaded.

(c) Definitions and application of segregation terms:

(1) “Separated from” means located in different cargo compartments or holds when stowed under deck. If the intervening deck is resistant to fire and liquid, a vertical separation, i.e., in different cargo compartments, is acceptable as equivalent to this segregation.

(2) “Separated by a complete cargo compartment or hold from” means either a vertical or horizontal separation, for example, by a complete cargo compartment or hold. If the intervening decks are not resistant to fire and liquid, only horizontal separation is acceptable.

(3) “Separated longitudinally by an intervening complete cargo compartment or hold from” means that vertical separation alone does not meet this requirement.

Table 148.120A—Segregation Between Incompatible Bulk Solid Cargoes

Bulk solid materialsClass4.14.24.35.16.1789/PDM
Flammable solid4.1X
Spontaneously combustible material4.22X
Dangerous when wet material4.333X
Oxidizer5.1333X
Poisonous material6.1XXX2X
Radioactive material722222X
Corrosive material82222XXX
Miscellaneous hazardous material and potential dangerous material9/PDMXXXXX2XX

Numbers and symbols indicate the following terms as defined in §148.3 of this part:

2—“Separated from”.

3—“Separated by a complete hold or compartment from”.

X—No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.

Table 148.120B—Segregation Between Bulk Solid Cargoes and Incompatible Packaged Cargoes

Packaged hazardous materialBulk solid material
Class4.14.24.35.16.1789/PDM
Explosives1.1
1.2
1.5
4444224X
Explosives1.3
1.6
3344222X
Explosives1.42222X22X
Flammable gas2.12212X22X
Non-flammable compressed gas2.222XXX21X
Poisonous gas2.322XXX21X
Flammable liquid32222X21X
Flammable solid4.1X1X1X21X
Spontaneously combustible material4.21X12121X
Dangerous when wet material4.3X1X2X21X
Oxidizer5.1122X112X
Organic peroxide5.22222122X
Poisonous material6.1X1X1XXXX
Infectious substance6.23323133X
Radioactive material72221XX2X
Corrosive material81112X2XX
Miscellaneous hazardous material9XXXXXXXX

Numbers and symbols indicate the following terms as defined in §148.3 of this part:

1—“Away from”.

2—“Separated from”.

3—“Separated by a complete hold or compartment from”.

4—“Separated longitudinally by an intervening complete compartment or hold from”.

X—No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.

§148.125   Stowage and segregation for materials of Class 4.1.

(a) Class 4.1 materials listed in Table 148.10 of this part must—

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

(2) Not be loaded or transferred between vessels during periods of rain or snow;

(3) Be stowed separated from foodstuffs; and

(4) Be stowed clear of sources of heat and ignition and protected from sparks and open flame.

(b) Bulkheads between a hold containing a Class 4.1 material and incompatible materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

§148.130   Stowage and segregation for materials of Class 4.2.

(a) Class 4.2 materials listed in Table 148.10 of this part must—

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

(2) Not be loaded or transferred between vessels during periods of rain or snow;

(3) Be stowed clear of sources of heat and ignition and protected from sparks and open flame; and

(4) Except for copra and seed cake, be stowed separate from foodstuffs.

(b) The bulkhead between a hold containing a Class 4.2 material and a hold containing a material not permitted to mix with Class 4.2 materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

§148.135   Stowage and segregation for materials of Class 4.3.

(a) Class 4.3 materials listed in Table 148.10 of this part which, in contact with water, emit flammable gases, must—

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

(2) Not be loaded or transferred between vessels during periods of rain or snow;

(3) Be stowed separate from foodstuffs and all Class 8 liquids; and

(4) Be stowed in a mechanically ventilated hold. Exhaust gases must not penetrate into accommodation, work or control spaces. Unmanned barges that have adequate natural ventilation need not have mechanical ventilation.

(b) The bulkhead between a hold containing a Class 4.3 material and incompatible materials must have cable and conduit penetrations sealed against the passage of gas and vapor.

§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.

§148.145   Stowage and segregation for materials of Class 7.

(a) Class 7 material listed in Table 148.10 of this part must be stowed—

(1) Separate from foodstuffs; and

(2) In a hold or barge closed or covered to prevent dispersal of the material during transportation.

(b) [Reserved]

§148.150   Stowage and segregation for materials of Class 9.

(a) A bulk solid cargo of Class 9 material (miscellaneous hazardous material) listed in Table 148.10 of this part must be stowed and segregated as required by this section.

(b) Ammonium nitrate fertilizer of Class 9 must be segregated as required for Class 5.1 materials in §§148.120 and 148.140 of this part and must be stowed—

(1) Separated by a complete hold or compartment from readily combustible materials, chlorates, hypochlorites, nitrites, permanganates, and fibrous materials (e.g., cotton, jute, sisal, etc.);

(2) Clear of all sources of heat, including insulated piping; and

(3) Out of direct contact with metal engine-room boundaries.

(c) Castor beans must be stowed separate from foodstuffs and Class 5.1 materials.

(d) Fish meal must be stowed and segregated as required for Class 4.2 materials in §§148.120 and 148.130 of this part. In addition, its temperature at loading must not exceed 35 °C (95 °F), or 5 °C (9 °F) above ambient temperature, whichever is higher.

(e) Sulfur must be stowed and segregated as required under §§148.120 and 148.125 of this part for a material of Class 4.1.

§148.155   Stowage and segregation for potentially dangerous materials.

(a) A PDM must be stowed and segregated according to the requirements of this section and Table 148.155 of this section.

(b) When transporting coal—

(1) Coal must be stowed separate from materials of Class/division 1.4 and Classes 2, 3, 4, and 5 in packaged form; and separated from bulk solid materials of Classes 4 and 5.1;

(2) No material of Class 5.1, in either packaged or bulk solid form, may be stowed above or below a cargo of coal; and

(3) Coal must be separated longitudinally by an intervening complete cargo compartment or hold from materials of Class 1 other than Class/division 1.4.

(c) When transporting direct reduced iron (DRI)—

(1) DRI lumps, pellets, or cold-molded briquettes, and DRI hot-molded briquettes, must be separated from materials of Class/division 1.4, Classes 2, 3, 4, 5, Class 8 acids in packaged form, and bulk solid materials of Classes 4 and 5.1; and

(2) No material of Class 1, other than Class/division 1.4, may be transported on the same vessel with DRI.

(d) Petroleum coke, calcined or uncalcined, must be—

(1) Separated longitudinally by an intervening complete cargo compartment or hold from materials of Class/divisions 1.1 and 1.5; and

(2) Separated by a complete cargo compartment or hold from all hazardous materials and other potentially dangerous materials in packaged and bulk solid form.

Table 148.155—Stowage and Segregation Requirements for Potentially Dangerous Material

Potentially dangerous materialSegregate as for class listed1“Separate from” foodstuffsLoad only under dry weather conditionsKeep dryMechanical ventilation required“Separate from” material listedSpecial provisions
Aluminum Smelting By-products or Aluminum Re-melting Byproducts4.3XXXXClass 8 liquids
Brown Coal BriquettesSee paragraph (b) of this sectionSee paragraph (b) of this section.
Charcoal4.1XOily materials
CoalSee paragraph (b) of this sectionSee paragraph (b) of this section.
Direct reduced iron (A)See paragraph (c) of this sectionSee paragraph (c) of this section.
Direct reduced iron (B)See paragraph (c) of this sectionSee paragraph (c) of this section.
Ferrophosphorus4.3XXXXClass 8 liquids
Ferrolilicon4.3XXXXClass 8 liquids
FluorosparXClass 8 liquids
Lime, UnslakedXAll packaged and bulk solid hazardous materials
Linted Cotton SeedX
Magnesia, UnslakedAll packaged and bulk solid hazardous materials
Metal Sulfide Concentrates4.2XClass 8 liquids
Petroleum CokeXSee section 148.155(d).
Pitch Prill4.1
Pyrites, CalcinedXXXX
Sawdust4.1XAll Class 5.1 and 8 liquids
Silicomanganese4.3XXXXClass 8 liquids
Tankage4.2XX
Vanadium6.1X
Wood chips4.1
Wood pellets4.1
Wood pulp pellets4.1

1See Tables 148.120A and B.

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