Page images
PDF
EPUB

CB Bull constructed of steel or wood, completely dockod ovor, having cargo hatches in deck,

and stowing cargo “On deck in open" or "Under deck", fitted with cargo mast and boom and machinery for cargo bandling, with or without house or houses on dock.

[ocr errors]

Class "D" Barges DA Hull constructed of steel having division bulkheads forming tight compartments (tanks)

integral with the hull of the barge, to be utilized for the transportation, in bulk, of dangerous substances in liquid form, other than inflammable and combustible liquids.

[ocr errors]

DB Hull constructod of wood having division bulkheads and celling forming tight compart

monts Integral with the bull of the barge, to be utilized for the transportation, in buik, of dangerous substances other than Uquids.

[ocr errors]

Class "F" Barges BA Hall construotod of stoel or wood, having cargo carrying compartments of hopper type

and attod with bottom dump or sido dump (known as dump scowi, pud scowe, garbago SCOWS, etc.).

B Barge constructed of wood completely decked and having boxliko structure on deck not

rooted over.

and sides, free from unnecessary projections within the cargo space. Tight wooden flooring and ceiling or battens may be fitted in the cargo spaces of steel barges in lieu of steel platings.

(b) The term "celled" applied to a barge constructed of wood means the hold space is fitted with a tight plank floor and that tight planking or wooden cargo battens are carried up the sides of the hold to provide a smooth floor and reasonably smooth sides without unnecessary projections. Floor or siding fitted "tight" shall have removable sections for purposes of clean-out and access for inspection of hull. When cargo battens are fitted at sides the floor shall be carried out to the skin of the barge and fitted reasonably tight around the frames.

(c) When applied to & barge constructed of steel, the term “ceiled" means the construction shall be such as to provide a reasonably flush floor or tank top

8 146.10-4 Carfloats and barges used

as cariloats.

splosiv or other dangerous articles or substances laden in railway or highway vehicles in compliance with the provisions of the Department of Transportation regulations governing such transportation may be carried or conveyed on board carfloats and barges used as carfloats subject to the following conditions:

(a) Carfloats and barges used as cardoats shall not be utilized to transport, carry, convey or store vebicles laden with any explosive expressly prohibited by subsection 3 of R.S. 4472, as amended.

(b) Carfloats and barges used as carfloats shall not be utilized to transport, carry, convey or store vehicles laden with any permitted explosive or other dangerous article or substance unless in compliance with the provisions of the regulations in this part with respect to “Barges".

(c) Dangerous cargo laden in vehicles being transported on carfloats and

barges used as cartioats is not subject to any other provision of the regulations in this part unless the packages, or the substances if in bulk, are removed from the vehicle for any reason other than transfer of the article or substance from the vehicle to a vessel.

(d) Transfer of explosives from vehicles on board carfloats and barges used as carfloats to vessels shall be governed by the permit requirements of $$ 146.20 85, 146.20–87. (CGFR 57-93, 22 FR. 8671, Oct. 29, 1957, as amended by CGFR 59-46, 24 PR. 9391, Nov. 21, 1959)

$ 146.10–50 Stowage of explosives or other There is indicated in this table the explosives or other dangerous articles or substances, separated according to barges. Unless otherwise stated in the table, a permitted stowage applies to substances when in containers only. substances which are loaded and carried without benefit of containers or wrappers, and received and delivered by

[blocks in formation]

I Outside containers vulnerable to damage by water shall not be given this stowage.
! Outside containers vulnerable to damage by water shall be stowed under deck only.
• Outside containers vulnerable to damage by water shall be stowed under cover only.
Substances affected by water shall not be given this stowage.
Substances affected by water shall be stowed under deck only.
6 Substances affected by water shall be stowed under cover only.

Stowage shall be on deck in house" only.
[Order 74, 6 F.R. 280, Jan. 11, 1941, as amended, CGFR 68–142, 34 F.R. 2088, Feb. 12, 1969)

[blocks in formation]

8 146.10-5 On deck protection.

Wooden barrels, wooden or fiberboard boxes, fiber drums, plywood drums containing explosives, inflammable liquids, inflammable solids or oxidizing materials or poisons that are stowed “On deck in open" on barges shall be protected by tarpaulins. The following hazardous articles, burlap bags, camphene, calclum carbide, bleaching powder, cork, cotton, cotton and textile waste, excelsior, ibers, hay, naphthalene, oakum, wood shavings shall when stowed "On deck in open” on barges be protected by tarpaulins.

8 146.10-6 Stowage of explosives.

(a) Barges having cargoes of permitted explosives and other dangerous articles are required to observe the provisions of the stowage and storage chart of explosives and other dangerous articles in $ 146.10–50.

(b) Explosives required by the regula. tions in this part to be stowed in magazines shall when on board barges as cargo be stowed either in a house or "Under deck” as permitted for the particular type of barge by the provisions of table shown in $ 146.10-50. (Order 74, 6 F.R. 280, Jan. 11, 1941, as amended, 9 FR. 14943, Dec. 6, 1944)

dangerous articles or substances on board barges. their classification, that are permitted or restricted in their transportation and stowage on board the various class When such substances are permitted “p bulk" a notation to that effect appears in the table. (“In Bulk" means the vessel without mark or count.)

[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

"Transportation of inflammable or combustible liquids, in bulk, is governed by rules and regulations for tank vessels.

NOTE: Containers of dangerous articles vulnerable to damage by water or dangerous substances affected by water when loaded in weatherproof railroad vehicles in accordance with requirements of the Interstate Commerce Commis. sion regulations are exempt from the provisions of stowage restrictions shown in this table and numbered (1) to (7), inclusive.

trol, a transport index is not assigned to Fissile Class I packages. However, the external radiation levels may require a transport index number,

(2) Fissile Class II. Packages which may be transported together in any arrangement but in numbers which do not exceed an aggregate transport index of 50. For purposes of nuclear criticality safety control, individual packages may have a transport index of not less than 0.1 and not more than 10. However, the external radiation levels may require a

higher transport index number but not to exceed 10. Such shipments require no nuclear criticality safety control by the shipper during transportation.

(3) Fissile Class III. Shipments of packages which do not meet the requirements of Fissile Classes I or I and which are controlled to provide nuclear criticality safety in transportation by special arrangements between the shipper and the carrier.

NOTE 1: Uranium-235 exists only in combination with various percentages of uranition per gram of contents does not exceed:

(i) 0.0001 millicuries of Group I (see $ 146.19-5) radionuclides; or

(ii) 0.005 millicuries of Group II radionuclides; or

(iii) 0.3 millicuries of Groups III or IV radionuclides.

NOTE: This includes, but is not limited to, materials of low radioactivity concentration such as residues or solutions from chemical processing; wastes such as building rubble, metal, wood, and fabric scrap, glassware, paper, and cardboard; solid or liquid plant waste, sludges, and ashes.

um-234 and uranium-238. "Fissile radioactive material" as applied to uranium-235 refers to the amount of uranium-235 actually contained in the total quantity of uranium being transported.

NOTE 2: Radioactive material may consist of mixtures of fissile and nonfissile radionuclides. "Fissile radioactive material” refers to the amount of plutonium-238, plutonium-239, plutonium-241, uranium-233, uranium-235, or any combination thereof actually contained in the mixture. The "radioactivity" of the mixture consists of total activity of both the fissile and nonfissile radionuclides. All mixtures containing "fissile material" shall

be subject

to $ 146.19-12.

(b) "Full load” means any load:

(1) From a single consignor having the sole use of a vehicle, van, or portable container or of a hold, compartment, or defined deck area of a vessel.

(2) In respect of which all terminal and intermediate loading and unloading is carried out in accordance with the instructions of the consignor or the consignee. Unless otherwise specified in the regulations in this subpart, such a load may consist of radioactive materials of different kinds in packages which may be accompanied by nonradioactive materials for which mixed loading with radioactive material is not prohibited.

(c) "Large quantity radioactive materials” means a quantity the aggregate radioactivity of which exceeds that specified as follows:

(1) Group I or II (see paragraph (j) of this section) radionuclides; 20 curies.

(2) Group III or IV radionuclides: 200 curies.

(3) Group V radionuclides: 5,000 curies.

(4) Group VI or VII radionuclides: 50,000 curies.

(5) Special form material: 5,000 curies.

(d) “Low specific activity material" means any of the following:

(1) Uranium or thorium ores and physical or chemical concentrates of those ores;

(2) Unirradiated natural or depleted uranium or unirradiated natural thorium;

(3) Tritium oxide in aqueous solutions provided the concentration does not exceed 5 millicuries per milliliter;

(4) Material in which the activity is essentially uniformly distributed and in which the estimated average concentra

(5) Objects of nonradioactive material externally contaminated with radioactive material: Provided, That the radioactive material is not readily dispersible and the surface contamination when averaged over an area of 1 square meter, does not exceed 0.0001 millicurie (220,000 disintegrations per minute) per square centimeter of Group I radionuclides or 0.001 millicurie (2,200,000 disintegrations per minute) per square centimeter of other radionuclides.

(e) “Normal form radioactive materials” means those which are not special form radioactive materials. Normal form radioactive materials are grouped into transport groups (see paragraph (j) of this section).

(f) “Radioactive material" means any material or combination of materials, which spontaneously emits ionizing radiation. Materials in which the estimated specific activity is not greater than 0.002 microcuries per gram of material, and in which the radioactivity is essentially uniformly distributed, are not considered to be radioactive materials.

(g) "Removable radioactive contamination" means radioactive contamination which can be readily removed in measurable quantities by wiping the contaminated surface with an absorbent material. The measurable quantities shall be considered as being not significant if they do not exceed the limits specified in § 146.19-30.

(h) "Special form radioactive materials” means those which, if released from a package, might present some direct radiation hazard but would present little hazard due to radiotoxicity and little possibility of contamination. This may be the result of inherent properties of the material( such as metals or alloys), or acquired characteristics, as through encapsulation. The criteria for determining whether a material meets the definition of special form are prescribed in $ 146.19-27(a).

(i) [Reserved)

(j) “Transport group" means any one of seven groups into which normal form radionuclides are classified according to their radiotoxicity and their relative potential hazard in transportation, and as listed in $146.19-5.

(k) “Transport index" means the number placed on a package to designate the degree of control to be exercised by the carrier during transportation. The transport index to be assigned to a package of radioactive materials shall be determined by either subparagraph (1) or (2) of this paragraph, whichever is larger. The number expressing the transport index shall be rounded up to the next highest tenth; e.g., 1.01 becomes 1.1.

(1) The highest radiation dose rate, in millirem per hour at 3 feet from any accessible external surface of the package; or

(2) For Fissile Class II packages only, the transport index number calculated by dividing the number -50" by the number of similar packages which may be transported together (see $ 146.19-12) as determined by the procedures prescribed in the regulations of the U.S. Atomic Energy Commission, 10 CFR Part 71.

(1) “Type A packaging” means packaging which is designed in accord

ance with the general packaging requirements of $ 146.19-10 and applicable DOT regulations, and which is adequate to prevent the loss or dispersal of the radioactive contents and to retain the efficiency of its radiation shielding properties if the package is subject to the tests prescribed in § 146.19-27(b).

(m) “Type B packaging" means packaging which meets the standards for Type A packaging, and, in addition, meets the standards for hypothetical accident conditions of transportation as prescribed in § 146.19-27(c).

(n) "Type A quantity” and “Type B quantity” radioactive materials means a quantity the aggregate radioactivity of which does not exceed that specified as follows:

[blocks in formation]

Elementi

Radionuclide 2

[blocks in formation]

Actinium (89)

Americium (95)..

Antimony (51).

х

X X

Argon (18)....

X X

х

x

Arsenic (33).

x X

Ac-227.
Ac-228.
Am-241.
Am-243
Sb-122
Sb-124
Sb-125.
Ar-37.
Ar-41.
Ar-41 (uncompressed) 3.
A8-73.
As-74.
As-76.
As-77..
At-211.
Ba-131.
B8-133.
Ba-140.
Bk-249.
Be-7..
Bi-206.
Bi-207.
Bi-210.
Bi-212.
Br-82.
Cd-109.
Cd-115m
Cd-115.

Astatine (85). Barium (56)

х

х

х

х

х

Berkelium (97) Beryllium (4). Bismuth (83)

x

X

х

х

Bromine (35) Cadmium (48)

X X

х

x

See footnotes at end of table.

« PreviousContinue »