Electronic Code of Federal Regulations
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e-CFR data is current as of August 5, 2020 |
Title 46 → Chapter I → Subchapter O → Part 151 → Subpart 151.05 |
Title 46: Shipping
PART 151—BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
Subpart 151.05—Summary of Minimum Requirements for Specific Cargoes
Contents
§151.05-1 Explanation of column headings in Table 151.05.
§151.05-2 Compliance with requirements for tank barges carrying benzene and benzene containing cargoes, or butyl acrylate cargoes.
Table 151.05 to Subpart 151.05 of Part 151—Summary of Minimum Requirements
Back to Top§151.05-1 Explanation of column headings in Table 151.05.
(a) Cargo identification/name. This column identifies cargoes by name. Words in italics are not part of the cargo name but may be used in addition to the cargo name. When one entry references another entry by use of the word “see” and both names are in roman type, either name may be used as the cargo name (e.g., “Diethyl either see Ethyl ether”). However, the referenced entry is preferred.
(b) Cargo identification/pressure. This column identifies cargo in terms of pressure within the tank. Terms used are:
(1) Pressurized. Cargo carried at a pressure in excess of 10 pounds per square inch gauge as measured at the top of the tank (i.e., exclusive of static head).
(2) Atmospheric pressure. Cargo carried at not more than 10 pounds per square inch gauge, exclusive of static head.
(c) Cargo identification/temperature. This column identifies the cargo by the temperature of the cargo during transit.
(1) Ambient temperature. Cargo which is carried at naturally occurring temperatures.
(2) Low temperature. Cargo carried below ambient temperatures when the product temperature is below 0 °F.
(3) Elevated temperature. Cargo carried above ambient temperatures.
(d) Hull type. This column refers to the flotation features of the barge. Terms used are explained and defined in Subpart 151.10 of this part.
(e) Cargo segregation/tanks. This column refers to the separation of the cargo from its surroundings. Terms are explained in §151.13-5 and in footnotes to Table 151.05 of this part.
(f) Tanks/type. This column refers to the design requirements for cargo tanks and their placement within the hull of the vessel. Terms are explained in §151.15-1.
(g) Tanks/venting. This column refers to arrangements for preventing excess pressure or vacuum within the cargo tank. Terms used are explained and defined in §151.15-5.
(h) Tanks/gauging devices. This column refers to arrangements provided for determining the amount of cargo present in cargo tanks. Terms used are explained and defined in §151.15-10.
(i) Cargo transfer/piping. This column refers to the classification of piping in accordance with Subchapter F of this chapter as discussed in §151.20-1.
(j) Cargo transfer/control. This column refers to the valving requirements for the cargo piping system. These requirements are defined in §151.20-5.
(k) Environmental control/cargo tanks. This column refers to control of the composition of the environment within cargo tanks. Definitions and detailed requirements are given in §151.25-1.
(l) Environmental control/cargo handling space. This column refers to control of the environment in the cargo handling spaces. Definitions and detailed requirements are found in §151.25-2.
(m) Fire protection. This column specifies whether portable fire extinguishers are required on barges carrying the cargo named. Requirements for cargoes requiring extinguishers are given in Subpart 151.30 of this part.
(n) Special requirements. This column refers to requirements in subparts 151.40, 151.50, 151.55, 151.56, and 151.58 of this part which apply to specific cargoes. The section numbers listed omit the preceding part designation, “151”.
(o) Electrical hazard class—group. This column lists the electrical hazard class and group used for the cargo when determining requirements for electrical equipment under subchapter J (Electrical engineering) of this chapter.
(p) Temperature control installations. This column refers to systems which are used to control the temperature of the cargo. Definitions and requirements which are applicable if such systems are used are given in Subpart 151.40 of this part.
(q) Tank inspection period. This column refers to the maximum period in years between internal cargo tank inspections. Applicable requirements are given in §151.04-5.
[CGFR 70-10, 35 FR 3714, Feb. 25, 1970; 35 FR 6431, Apr. 22, 1970, as amended by CGD 74-275, 40 FR 21958, May 20, 1975; CGD 88-100, 54 FR 40029, Sept. 29, 19895; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-2000-7079, 65 FR 67183, Nov. 8, 2000]
§151.05-2 Compliance with requirements for tank barges carrying benzene and benzene containing cargoes, or butyl acrylate cargoes.
A tank barge certificated to carry benzene and benzene containing cargoes or butyl acrylate cargoes must comply with the gauging requirement of Table 151.05 of this part by August 15, 1998. Until that date, a tank barge certificated to carry benzene and benzene containing cargoes must meet either the gauging requirement of Table 151.05 or the restricted or closed gauging requirements in effect on September 29, 1994; and a tank barge certificated to carry butyl acrylate cargoes must meet either the gauging requirements of Table 151.05 or comply with the open, restricted, or closed gauging requirements in effect on September 29, 1994.
[CGD 95-900, 60 FR 34050, June 29, 1995]
Table 151.05 to Subpart 151.05 of Part 151—Summary of Minimum Requirements
| Cargo identification1 | Hull type | Cargo segre- gation tank | Tanks | Cargo transfer | Environmental control | Fire protection required | Special requirements in 46 CFR Part 151 | Electrical hazard class and group | Temp. control install. | Tank internal inspect. period—years | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cargo name | Pressure | Temp. | Type | Vent | Gauging device | Piping class | Control | Cargo tanks | Cargo handling space | |||||||
| a. | b. | c. | d. | e. | f. | g. | h. | i. | j. | k. | l. | m. | n. | o. | p. | q. |
| Acetaldehyde | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-1 | Inert | Vent F | Yes | .55-1(h) | I-C | NA | G |
| Acetic acid | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-73 .55-1(g) | I-D | NA | G |
| Acetic anhydride | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-73 .55-1(g) | I-D | NA | G |
| Acetone cyanohydrin | Atmos. | Amb. | I | 1 i i 2 i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-70(b) .50-73 .50-81 | I-D | NA | G |
| Acetonitrile | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Acrylic acid | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-73 .50-81 .58-1(a) | I-D | NA | G |
| Acrylonitrile | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .55-1(e) .50-70(a) | I-D | NA | G |
| Adiponitrile | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Open | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Alkylbenzenesulfonic acid (greater than 4%) | Atmos. | Elev. | III | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-73 .58-1(e) | I-B | NA | G |
| Alkyl(C7-C9) nitrates | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-81 .50-86 | NA | NA | G |
| Allyl alcohol | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-C | NA | G |
| Allyl chloride | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 | I-D | NA | G |
| Aluminum sulfate solution | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .58-1(e) | NA | NA | G |
| Aminoethylethanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(b) | NA | NA | G |
| Ammonia, anhydrous | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR250 p.s.i. | Restr. | II | P-2 | NR | Vent F | No | .50-30 .50-32 | I-D | NA | G |
| Ammonia, anhydrous | Atmos. | Low | II | 1NA 2 i i | Ind. Gravity | PV | Restr. | II-L | G-2 | NR | Vent F | No | .50-30 .50-32 | I-D | .40- 1(b)(1) | 8 |
| Ammonium bisulfite solution (70% or less) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-73 .56-1(a), (b), (c) | NA | NA | G |
| Ammonium hydroxide (28% or less NH 3) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .56-1(a), (b), (c), (f), (g) | I-D | NA | G |
| Aniline | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | G |
| Anthracene oil (Coal tar fraction) | Atmos. | Amb. Elev. | II | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | I-D | NA | G |
| Argon, liquefied | Press. | Low | III | 1NA 2 i | Ind. Pressure | SR | Restr. | II-L | P-1 | NR | Vent F | No | .40-1(a) .50-30 .50-36 | NA | .40-1(a) | G |
| Benzene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-60 | I-D | NA | G |
| Benzene hydrocarbon mixtures (containing Acetylenes) (having 10% Benzene or more) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-60 .56-1(b), (d), (f), (g), | I-D | NA | G |
| Benzene hydrocarbon mixtures (having 10% Benzene or more) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-60 | I-D | NA | G |
| Benzene, Toluene, Xylene mixtures (having 10% Benzene or more) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-60 | I-D | NA | G |
| Butadiene | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | NR | Vent F | Yes | .50-70(a) .50-73 | I-B | NA | G |
| Butadiene, Butylene mixtures (containing Acetylenes) | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-1 | NR | Vent F | Yes | .50-30 .50-70(a) .50-73 .56-1(b), (d), (f), (g) | I-B | NA | G |
| Butyl acrylate (all isomers) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Butylamine (all isomers) | Atmos. | Amb. | II | 1 i i 2 i i | Ind. Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-D | NA | G |
| Butyl methacrylate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Butyraldehyde (all isomers) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Open | II | G-1 | NR | Vent F | Yes | .55-1(h) | I-C | NA | G |
| Camphor oil (light) | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | I-D | NA | G |
| Carbolic oil | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | NA | NA | G |
| Carbon dioxide, liquefied | Press. | Low | III | 1NA 2 i | Ind. Pressure | SR | Restr. | I-L | P-1 | NR | Vent F | No | .50-30 | NA | .40-1(b)(1) | G |
| Carbon disulfide | Atmos. | Amb. | II | 1NA 2 i i | Ind. Gravity | PV | Restr. | II | G-1 | Inert | Vent F | Yes | .50-40 .50-41 | I-A | NA | G |
| Carbon tetrachloride | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Open | II | G-1 | NR | Vent N | No | No | NA | NA | G |
| Cashew nut shell oil (untreated) | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-2 | NR | Vent N | Yes | .50-73 | NA | NA | G |
| Caustic potash solution | Atmos. | Amb. Elev. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .55-1(j) | NA | NA | G |
| Caustic soda solution | Atmos. | Amb. Elev. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .55-1(j) | NA | NA | G |
| Chlorine | Press. | Amb. | I | 1NA 2 i i | Ind. Pressure | SR300 p.s.i. | Indirect | I | P-2 | NR | Vent F | No | .50-30 .50-31 | NA | NA | 3 |
| Chlorobenzene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Open | II | G-1 | NR | Vent N | Yes | No | I-D | NA | G |
| Chloroform | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent F | No | No | NA | NA | G |
| Chlorohydrins (crude) | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 | I-D | NA | G |
| o-Chloronitrobenzene | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | NA | NA | G |
| Chlorosulfonic acid | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Open | II | G-1 | NR | Vent N | No | .50-20 .50-21 .50-73 | I-B | NA | G |
| Coal tar naphtha solvent | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-73 | I-D | NA | G |
| Coal tar pitch (molten) | Atmos. | Elev. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-73 | I-D | NA | G |
| Creosote | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | NA | NA | G |
| Cresols (all isomers) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | NA | NA | G |
| Cresols with less than 5% Phenol, see Cresols (all isomers) | ||||||||||||||||
| Cresols with 5% or more Phenol, see Phenol | ||||||||||||||||
| Cresylate spent caustic | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-73 .55-1(b) | NA | NA | G |
| Cresylic acid, sodium salt solution, see Cresylate spent caustic | ||||||||||||||||
| Crotonaldehyde | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(h) | I-C | NA | G |
| Cyclohexanone | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(a), (b) | I-D | NA | G |
| Cyclohexanone, Cyclohexanol mixture | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(b) | I-D | NA | G |
| Cyclohexylamine | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(a), (b), (c), (g) | I-D | NA | G |
| Cyclopentadiene, Styrene, Benzene mixture | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent F | Yes | .50-60 .56-1(b) | I-D | NA | G |
| iso-Decyl acrylate | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-70(a) .50-81(a), (b) .55-1(c) | NA | NA | G |
| Dichlorobenzene (all isomers) | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(a), (b) | I-D | NA | G |
| Dichlorodifluoromethane | Press. | Amb. | III | 1NA 2 i | Ind. Pressure | SR | Restr. | II | P-1 | NR | NR | No | No | NA | NA | G |
| 1,1-Dichloroethane | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 2,2′-Dichloroethyl ether | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(f) | I-C | NA | G |
| Dichloromethane | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | No | I-D | NA | G |
| 2,4-Dichlorophenoxy acetic acid, diethanolamine salt solution | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .56-1(a), (b), (c), (g) | NA | NA | G |
| 2,4-Dichlorophenoxyacetic acid, dimethylamine salt solution | Atmos. | Amb. Elev. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .56-1(a), (b), (c), (g) | NA | NA | G |
| 2,4-Dichlorophenoxyacetic acid, triisopropanolamine salt solution | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .56-1(a), (b), (c), (g) | NA | NA | G |
| 1,1-Dichloropropane | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 1,2-Dichloropropane | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 1,3-Dichloropropane | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 1,3-Dichloropropene | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Dichloropropene, Dichloropropane mixtures | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 2,2-Dichloropropionic acid | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | Dry | Vent F | Yes | .50-73 .58-1(e) | NA | NA | G |
| Diethanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | NA | NA | G |
| Diethylamine | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-C | NA | G |
| Diethylenetriamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | NA | NA | G |
| Diethyl ether, see Ethyl ether | ||||||||||||||||
| Diisobutylamine | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-C | NA | G |
| Diisopropanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | NA | NA | G |
| Diisopropylamine | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-C | NA | G |
| N,N-Dimethylacetamide | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(b) | I-D | NA | G |
| Dimethylamine | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | NR | Vent F | Yes | .55-1(c) | I-C | NA | G |
| Dimethylethanolamine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(b), (c) | I-C | NA | G |
| Dimethylformamide | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(e) | I-D | NA | G |
| 1,4-Dioxane | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | Inert | Vent F | Yes | No | I-C | NA | G |
| Diphenylmethane diisocyanate | Atmos. | Elev. | II | 1 i i 2 i | Integral Gravity | PV | Closed | I | G-1 | Inert Dry | Vent F | Yes | .50-5 .56-1(a), (b) | NA | Yes | G |
| Di-n-propylamine | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-C | NA | G |
| Dodecyl- dimethyl- amine, Tetradecyldimethylamine mixture | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .56-1(b) | NA | NA | G |
| Dodecyl phenol | Atmos. | Amb. | I | 1 i i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-73 | I-D | NA | 2 |
| Epichlorohydrin | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 | I-C | NA | G |
| Ethanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | I-D | NA | G |
| Ethyl acrylate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Ethylamine solution (72% or less) | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .55-1(b) | I-D | NA | G |
| N-Ethylbutylamine | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(b) | I-C | NA | G |
| Ethyl chloride | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | NR | Vent F | Yes | No | I-D | NA | 8 |
| N-Ethylcyclohexylamine | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(b) | I-C | NA | G |
| Ethylene chlorohydrin | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | G |
| Ethylene cyanohydrin | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | NA | NA | G |
| Ethylenediamine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-D | NA | G |
| Ethylene dibromide | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | No | No | NA | NA | G |
| Ethylene dichloride | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Ethylene glycol monoalkyl ethers Including: 2-Ethoxyethanol Ethylene glycol butyl ether Ethylene glycol tert-butyl ether Ethylene glycol ethyl ether Ethylene glycol methyl ether Ethylene glycol n-propyl ether Ethylene glycol isopropyl ether | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-C | NA | G |
| Ethylene glycol hexyl ether | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | NA | NA | G |
| Ethylene glycol propyl ether | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | No | NA | NA | G |
| Ethylene oxide | Press. | Amb. | I | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | Inert | Vent F | Yes | .50-10 .50-12 | I-B | .40-1(c) | 4 |
| Ethyl ether | Atmos. | Amb. | II | 1NA 2 i i | Ind. Gravity | PV | Closed | II | G-1 | Inert | Vent F | Yes | .50-40 .50-42 | I-C | NA | G |
| 2-Ethylhexyl acrylate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Ethylidene norbornene | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-5 .50-74 | NA | NA | G |
| Ethyl methacrylate | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) | I-D | NA | G |
| 2-Ethyl-3-propylacrolein | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-C | NA | G |
| Ferric chloride solutions | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-20 .50-75 | I-B | NA | G |
| Fluorosilicic acid (30% or less) | Atmos. | Amb. | II | 1 i i 2 i i | Ind. Gravity | PV | Closed | II | G-1 | NR | Vent F | No | .50-20 .50-22 .50-73 .50-77 | I-B | NA | 4 |
| Formaldehyde solution (37% to 50%) | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .55-1(h) | I-B | NA | G |
| Formic acid | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-73 .55-1(i) | I-D | NA | G |
| Furfural | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(h) | I-C | NA | G |
| Glutaraldehyde solution (50% or less) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | No | NA | NA | G |
| Glyoxylic acid solution (50% or less) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-73 .50-81 .58-1(e) | NA | NA | G |
| Hexamethylenediamine solution | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-D | NA | G |
| Hexamethyleneimine | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .56-1(b), (c) | I-C | NA | G |
| Hydrochloric acid | Atmos. | Amb. | III | 1NA 2 i i | Ind. Gravity | Open | Open | II | G-1 | NR | Vent F | No | .50-20 .50-22 .50-73 | I-B | NA | 4 |
| Hydrofluorosilicic acid (25% or less), see Fluorosilicic acid (30% or less) | ||||||||||||||||
| 2-Hydroxyethyl acrylate | Atmos. | Amb. | I | 1 i i 2 i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-70(a) .50-73 .50-81(a), (b) | NA | NA | G |
| Isoprene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Open | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Kraft pulping liquors (free alkali content 3% or more) (including: Black, Green, or White liquor) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .56-1(a), (c), (g) | NA | NA | G |
| Mesityl oxide | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Methylacetylene, Propadiene mixture | Press. | Amb. | III | 1 NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | NR | Vent F | Yes | .50-79 | I-C | NA | G |
| Methyl acrylate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Methylamine solution (42% or less) | Atmos. | Amb. | II | 1NA 2 i i | Ind. Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .56-1(a), (b), (c), (g) | I-D | NA | G |
| Methyl bromide | Press. | Amb. | I | 1NA 2 i i | Ind. Pressure | SR | Closed | I | P-2 | NR | Vent F | Yes | .50-5 | I-D | NA | 2 |
| Methyl chloride | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-2 | NR | Vent F | Yes | .55-1(c) | I-D | NA | 8 |
| Methylcyclopentadiene dimer | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-B | NA | G |
| Methyl diethanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .56-1(b), (c) | I-C | NA | G |
| 2-Methyl-5-ethylpyridine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(e) | I-D | NA | G |
| Methyl methacrylate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| 2-Methylpyridine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-D | NA | G |
| alpha-Methylstyrene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Monochloro- difluoromethane | Press. | Amb. | III | 1NA 2 i | Ind. Pressure | SR | Restr. | I | P-1 | NR | NR | No | No | NA | NA | G |
| Morpholine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | I-C | NA | G |
| Motor fuel anti-knock compounds (containing lead alkyls) | Atmos. | Amb. | I | 1 i i 2 i i | Ind. Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-6 .50-73 | I-D | NA | .50-6 |
| Nitric acid (70% or less) | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .50-20 .50-73 .50-80 | I-B | NA | 4 |
| Nitrobenzene | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | G |
| Nitrogen, liquefied | Press. | Low | III | 1NA 2 i | Ind. Pressure | SR | Restr. | II-L | P-1 | NR | Vent F | No | .40-1(a) .50-30 .50-36 | NA | .40-1(a) | G |
| 1- or 2-Nitropropane | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-81 | I-C | NA | G |
| o-Nitrotoluene | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | G |
| Octyl nitrates (all isomers), see Alkyl(C7-C9) nitrates | ||||||||||||||||
| Oleum | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-20 .50-21 .50-73 | I-B | NA | 4 |
| Pentachloroethane | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | No | NA | NA | G |
| 1,3-Pentadiene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81 | I-D | NA | G |
| Perchloroethylene | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | No | NA | NA | G |
| Phenol | Atmos. | Amb. | I | 1 i i 2 i | Integral Gravity | PV | Closed | I | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | 2 |
| Phosphoric acid | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-20 .50-23 .50-73 | I-B | NA | 4 |
| Phosphorus, white (elemental) | Atmos. | Elev. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | Water Pad | Vent F | Yes | .50-50 | NA | NA | 4-8 |
| Phthalic anhydride (molten) | Atmos. | Elev. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| Polyethylene polyamines | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(e) | NA | NA | G |
| Polymethylene polyphenyl isocyanate | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Closed | II | G-1 | Dry | Vent F | Yes | .55-1(e) | NA | NA | G |
| Potassium hydroxide solution, see Caustic potash solution | ||||||||||||||||
| iso-Propanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | I-D | NA | G |
| Propanolamine (iso-, n-) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .56-1(b), (c) | I-D | NA | G |
| Propionic acid | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-73 .55-1(g) | I-D | NA | G |
| iso-Propylamine | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .55-1(c) | I-D | NA | G |
| Propylene oxide | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Restr. | II | P-1 | Inert | Vent F | Yes | .50-10 .50-13 | I-B | NA | G |
| iso-Propyl ether | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | Inert | Vent F | Yes | .50-70(a) | I-D | NA | G |
| Pyridine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(e) | I-D | NA | G |
| Sodium aluminate solution (45% or less) | Atmos. | Amb. Elev. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .56-1(a), (b), (c) | NA | NA | G |
| Sodium chlorate solution (50% or less) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-73 | NA | NA | G |
| Sodium dichromate solution (70% or less) | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | Open | Closed | II | G-1 | NR | Vent N | No | .50-5(d) .50-73 .56-1(b), (c) | NA | NA | G |
| Sodium hydroxide solution, see Caustic soda solution | ||||||||||||||||
| Sodium hypochlorite solution (20% or less) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .50-73 .56-1(a), (b) | NA | NA | G |
| Sodium sulfide, hydrosulfide solutions (H2S 15ppm or less) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-73 .55-1(b) | NA | NA | G |
| Sodium sulfide, hydrosulfide solutions (H2S greater than 15ppm but less than 200ppm) | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .50-73 .55-1(b) | NA | NA | G |
| Sodium sulfide, hydrosulfide solutions (H2S greater than 200ppm) | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | No | .50-73 .55-1(b) | NA | NA | G |
| Sodium thiocyanate solution (56% or less) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .58-1(a) | NA | NA | G |
| Styrene monomer | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Sulfur (molten) | Atmos. | Elev. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | Vent N | Vent N | Yes | .50-55 | I-C | .40- 1(f)(1) | G |
| Sulfur dioxide | Press. | Amb. | I | 1NA 2 i i | Ind. Pressure | SR | Closed | P-2 | NR | Vent F | No | .50-30 .50-84 .55-1(j) | NA | NA | 2 | |
| Sulfuric acid | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-20 .50-21 .50-73 | I-B | NA | 4 |
| Sulfuric acid, spent | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | No | .50-20 .50-21 .50-73 | I-B | NA | 4 |
| 1,1,2,2-Tetrachloroethane | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | No | NA | NA | G |
| Tetraethylenepentamine | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(c) | I-C | NA | G |
| Tetrahydrofuran | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(b) | I-C | NA | G |
| Toluenediamine | Atmos. | Elev. | II | 1 i i 2 i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-73 .56-1(a), (b), (c), (g) | NA | NA | G |
| Toluene diisocyanate | Atmos. | Amb. | I | 1 i i 2 i i | Integral Gravity | PV | Closed | I | G-1 | Dry N 2 | Vent F | Yes | .50-5 .55-1(e) | I-D | NA | G |
| o-Toluidine | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Closed | II | G-1 | NR | Vent F | Yes | .50-5 .50-73 | I-D | NA | G |
| 1,2,4-Trichlorobenzene | Atmos. | Amb. | III | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | No | I-D | NA | G |
| 1,1,2-Trichloroethane | Atmos. | Amb. | III | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .50-73 .56-1(a) | I-D | NA | G |
| Trichloroethylene | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | No | I-D | NA | G |
| 1,2,3-Trichloropropane | Atmos. | Amb. | II | 1 i i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-73 .56-1(a) | I-D | NA | G |
| Triethanolamine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(b) | I-C | NA | G |
| Triethylamine | Atmos. | Amb. | II | 1 i i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .55-1(e) | I-C | NA | G |
| Triethylenetetramine | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | Vent N | Yes | .55-1(b) | I-C | NA | G |
| Triphenylborane (10% or less), Caustic soda solution | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .56-1(a), (b), (c) | NA | NA | G |
| Trisodium phosphate solution | Atmos. | Amb. Elev. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .56-1(a), (c) | NA | NA | G |
| Urea, Ammonium nitrate solution (containing more than 2% NH 3) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | No | .56-1(b) | I-D | NA | G |
| Valeraldehyde (all isomers) | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | Inert | Vent F | Yes | No | I-C | NA | G |
| Vanillan black liquor (free alkali content 3% or more) | Atmos. | Amb. | III | 1 i 2 i | Integral Gravity | Open | Open | II | G-1 | NR | NR | No | .50-73 .56-1(a), (c), (g) | NA | NA | G |
| Vinyl acetate | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Open | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Vinyl chloride | Press. | Amb. | II | 1NA 2 i i | Ind. Pressure | SR | Closed | II | P-2 | NR | Vent F | Yes | .50-30 .50-34 | I-D | NA | 8 |
| Vinyl chloride | Atmos. | Low | II | 1NA 2 i i | Ind. Gravity | PV | Closed | II-L | G-2 | NR | Vent F | Yes | .50-30 .50-34 | I-D | .40- 1(b)(1) | 8 |
| Vinylidene chloride | Atmos. | Amb. | II | 1NA 2 i i | Ind. Gravity | PV | Closed | II | P-2 | Padded | Vent F | Yes | .55-1(f) .50-70(a) .50-81(a), (b) | I-D | NA | G |
| Vinyltoluene | Atmos. | Amb. | III | 1 i 2 i i | Integral Gravity | PV | Restr. | II | G-1 | NR | Vent F | Yes | .50-70(a) .50-81 .56-1(a), (b), (c), (g) | I-D | NA | G |
| For requirements see these sections in Part 151: | .10-1 | .13- 5 | .15- 1 | .15-5 | .15- 10 | .20- 1 | .20- 5 | .25-1 | .25-2 | .30 | 111.105 (Sub-chapter J) | .40 | .04- 5 | |||
See Table 2 of Part 153 for additional cargoes permitted to be carried by tankbarge.
Terms and symbols:
Segregation—Tank—
Line 1—Segregation of cargo from surrounding waters:
i = Skin of vessel (single skin) only required. Cargo tank wall can be vessel's hull.
i i = Double skin required. Cargo tank wall cannot be vessel's hull.
Line 2—Segregation of cargo space from machinery spaces and other spaces which have or could have a source of ignition:
i = Single bulkhead only required. Tank wall can be sole separating medium.
i i = Double bulkhead required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid (if compatible with cargo) is satisfactory.
Internal tank inspection—
G—Indicates cargo is subject to general provisions of 151.04-5(b).
Specific numbers in this column are changes from the general provisions.
Abbreviations used:
Tank type: Ind = Independent.
Vent:
PV = Pressure vacuum valve.
SR = Safety relief.
Gauging device: Restr. = Restricted.
General usage:
NR = No requirement.
NA = Not applicable.
1. The provisions contained in 46 CFR Part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume.
[USCG-2000-7079, 65 FR 67183, Nov. 8, 2000]