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Electronic Code of Federal Regulations

e-CFR data is current as of December 11, 2019

Title 46Chapter ISubchapter NPart 148Subpart D → §148.120


Title 46: Shipping
PART 148—CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING
Subpart D—Stowage and Segregation


§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.

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