{"data":{"id":"us/46-cfr-148.155","jurisdiction":"us","citation":"46 CFR 148.155","heading":"Stowage and segregation for potentially dangerous materials.","body":"(a) A PDM must be stowed and segregated according to the requirements of this section and Table 148.155 of this section.\n(b) When transporting coal—\n(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;\n(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\n(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.\n(c) When transporting direct reduced iron (DRI)—\n(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\n(2) No material of Class 1, other than Class/division 1.4, may be transported on the same vessel with DRI.\n(d) Petroleum coke, calcined or uncalcined, must be—\n(1) Separated longitudinally by an intervening complete cargo compartment or hold from materials of Class/divisions 1.1 and 1.5; and\n(2) Separated by a complete cargo compartment or hold from all hazardous materials and other potentially dangerous materials in packaged and bulk solid form.\nTable 148.155—Stowage and Segregation Requirements for Potentially Dangerous Material\nPotentially dangerous material Segregate as for class listed 1 “Separate from” foodstuffs Load only under dry weather conditions Keep dry Mechanical ventilation required “Separate from” material listed Special provisions\nAluminum Smelting By-products or Aluminum Re-melting Byproducts 4.3 X X X X Class 8 liquids\nBrown Coal Briquettes See paragraph (b) of this section See paragraph (b) of this section.\nCharcoal 4.1 X Oily materials\nCoal See paragraph (b) of this section See paragraph (b) of this section.\nDirect reduced iron (A) See paragraph (c) of this section See paragraph (c) of this section.\nDirect reduced iron (B) See paragraph (c) of this section See paragraph (c) of this section.\nFerrophosphorus 4.3 X X X X Class 8 liquids\nFerrolilicon 4.3 X X X X Class 8 liquids\nFluorospar X Class 8 liquids\nLime, Unslaked X All packaged and bulk solid hazardous materials\nLinted Cotton Seed X\nMagnesia, Unslaked All packaged and bulk solid hazardous materials\nMetal Sulfide Concentrates 4.2 X Class 8 liquids\nPetroleum Coke X See section 148.155(d).\nPitch Prill 4.1\nPyrites, Calcined X X X X\nSawdust 4.1 X All Class 5.1 and 8 liquids\nSilicomanganese 4.3 X X X X Class 8 liquids\nTankage 4.2 X X\nVanadium 6.1 X\nWood chips 4.1\nWood pellets 4.1\nWood pulp pellets 4.1\n1 See Tables 148.120A and B.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER N—DANGEROUS CARGOES","PART 148—CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING","Subpart D—Stowage and Segregation"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"cc9d08268213279271463b20abfc6b38bcf5bdee53bae961aeb805a6fb819fdc","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-148.150","next":"us/46-cfr-148.200"},"notice":"GroundRules: Original legal text. Not legal advice."}