CV33

NOTE 1: "Critical group" means a group of members of the public which is reasonably

homogeneous with respect to its exposure for a given radiation source and given exposure pathway

and is typical of individual receiving the highest effective dose by the given exposure pathway

from the given source.

NOTE 2: "Members of the public" means in a general sense, any individuals in the population except

when subject to occupational or medical exposure.

NOTE 3: "Workers" are any persons who work, whether full time, part-time or temporarily, for an

employer and who have recognised rights and duties in relation to occupational radiation

protection.

(1) Segregation

(1.1) Packages, overpacks, containers and tanks containing radioactive material and unpacked

radioactive material shall be segregated during carriage:

(a) from workers in regularly occupied working areas:

(i) in accordance with Table A below; or

(ii) by distances calculated using a dose criterion of 5 mSv in a year and conservative model

parameters;

NOTE: Workers subject to individual monitoring for the purposes of radiation protection shall not

be considered for the purposes of segregation.

(b) from members of the public, in areas where the public has regular access:

(i) in accordance with Table A below; or

(ii) by distances calculated using a dose criterion of 1 mSv in a year and conservative model

parameters;

(i) in accordance with Table B below; or

(ii) by distances calculated using a radiation exposure criterion for undeveloped photographic film

due to the transport of radioactive material for 0.1 mSv per consignment of such film; and

NOTE: Mailbags shall be assumed to contain undeveloped film and plates and therefore be separated

from radioactive material in the same way.

(d) from other dangerous goods in accordance with 7.5.2.

(1.3) No persons other than members of the vehicle crew shall be permitted in

vehicles carrying packages, overpacks or containers bearing category II- YELLOW or III-YELLOW

labels.

(2) Activity limits

The total activity in a vehicle, for carriage of LSA material or SCO in Industrial Packages Type

1 (Type IP-1), Type 2 (Type IP-2), Type 3 (Type IP-3) or

unpackaged, shall not exceed the limits shown in Table C below.

Table C: ts for LSA material and SCO in

industrial packages or unpackaged

Nature of material or object	Activity limit for vehicle
LSA-I	No limit
LSA-II and LSA-III non-combustible solids	No limit
LSA-II and LSA-III combustible solids, and all liquids and gases	100 A2
SCO	100 A2

(3) Stowage during carriage and storage in transit

(3.1) Consignments shall be securely stowed.

(3.2) Provided that its average surface heat flux does not exceed 15 W/m2 and that the immediately

surrounding cargo is not in bags, a package or overpack may be carried or stored among packaged

general cargo without any special stowage provisions except as may be specifically required by the

competent authority in an applicable certificate of approval.

(3.3) Loading of containers and accumulation of packages, overpacks and containers shall be

controlled as follows:

(a) Except under the condition of exclusive use, and for consignments of LSA-I material, the total

number of packages, overpacks and containers aboard a single vehicle shall be so limited that the

total sum of the transport indexes aboard the vehicle does not exceed the values shown in Table D

below;

(b) The radiation level under routine conditions of carriage shall not exceed 2 mSv/h at any

point on, and 0.1 mSv/h at 2 m from, the external surface of the vehicle, except for consignments

carried under exclusive use, for which the radiation limits around the vehicle are set forth in

(3.5) (b) and (c);

shall not exceed the values shown in Table E below.

Table D: rt Index limits for containers and vehicles not under

exclusive use

Type of container or vehicle	Limit on total sum of transport indexes in a container or aboard a vehicle
Small container	50
Large container	50
Vehicle	50

Table E: Criticality Safety Index for containers and vehicles containing fissile material

Type of container or vehicle	Limit on total sum of criticality safety indexes
Type of container or vehicle	Not under exclusive use	Under exclusive use
Small container	50	n.a.
Large container	50	100
Vehicle	50	100

(3.4) Any package or overpack having either a transport index greater than 10, or any consignment

having a criticality safety index greater than 50, shall be carried only under exclusive use.

(3.5) For consignments under exclusive use, the radiation level shall not exceed:

(a) 10 mSv/h at any point on the external surface of any package or overpack, and may only

exceed 2 mSv/h provided that:

(i) the vehicle is equipped with an enclosure which, during routine conditions of carriage,

prevents the access of unauthorized persons to the interior of the enclosure;

(ii) provisions are made to secure the package or overpack so that its position within the

vehicle enclosure remains fixed during routine conditions of carriage, and

(iii) there is no loading or unloading during the shipment;

(b) 2 mSv/h at any point on the outer surfaces of the vehicle, including the upper and lower

surfaces, or, in the case of an open vehicle, at any point on the vertical planes projected from

the outer edges of the vehicle, on the upper surface of the load, and on the lower external surface

of the vehicle; and

of the vehicle, or, if the load is carried in an open vehicle, at any point 2 m from the vertical

planes projected from the outer edges of the vehicle.

(4) Additional requirements relating to carriage and storage in transit of fissile material

(4.1) Any group of packages, overpacks, and containers containing fissile material stored in

transit in any one storage area shall be so limited that the total sum of the CSIs in the group

does not exceed 50. Each group shall be stored so as to maintain a spacing of at least 6 m from

other such groups.

(4.2) Where the total sum of the criticality safety indexes on board a vehicle or in a container

exceeds 50, as permitted in Table E above, storage shall be such as to maintain a spacing of at

least 6 m from other groups of packages, overpacks or containers containing fissile material or

other vehicles carrying radioactive material.

(4.3) Fissile material meeting one of the provisions (a) to (f) of 2.2.7.2.3.5 shall meet the

following requirements:

(a) Only one of the provisions (a) to (f) of 2.2.7.2.3.5 is allowed per consignment;

(b) Only one approved fissile material in packages classified in accordance with 2.2.7.2.3.5

(f) is allowed per consignment unless multiple materials are authorized in the certificate of

approval;

(d) Fissile material in packages classified in accordance with 2.2.7.2.3.5

(d) shall be carried in a consignment with no more than 15 g of fissile nuclides;

(e) Unpackaged or packaged fissile material classified in accordance with 2.2.7.2.3.5 (e) shall be

carried under exclusive use on a vehicle with no more than 45 g of fissile nuclides.

(5) Damaged or leaking packages, contaminated packagings

(5.1) If it is evident that a package is damaged or leaking, or if it is suspected that the

package may have leaked or been damaged, access to the package shall be restricted and a

qualified person shall, as soon as possible, assess the extent of contamination and the resultant

radiation level of the package. The scope of the assessment shall include the package, the vehicle,

the adjacent loading and unloading areas, and, if necessary, all other material which has been

carried in the vehicle. When necessary, additional steps for the protection of persons property and

the environment, in accordance with provisions established by the competent authority, shall be

taken to overcome and minimize the consequences of such leakage or damage.

(5.2) Packages damaged or leaking radioactive contents in excess of allowable limits for normal

conditions of carriage may be removed to an acceptable interim location under supervision, but

shall not be forwarded until repaired or reconditioned and decontaminated.

(5.3) A vehicle and equipment used regularly for the carriage of radioactive material shall be

periodically checked to determine the level of contamination. The frequency of such checks shall

be related to the likelihood of contamination and the extent to which radioactive material is

carried.

(5.4) Except as provided in paragraph (5.5), any vehicle, or equipment or part thereof which has

become contaminated above the limits specified in

4.1.9.1.2 in the course of carriage of radioactive material, or which shows a radiation level in

excess of 5 µSv/h at the surface, shall be decontaminated as soon as possible by a qualified person

and shall not be re-used unless the following conditions are fulfilled:

(a) the non-fixed contamination shall not exceed the limits specified in 4.1.9.1.2;

(b) the radiation level resulting from the fixed contamination shall not exceed 5 ❍Sv/h at the

surface.

(5.5) A container, tank, intermediate bulk container or vehicle dedicated to the carriage of

unpackaged radioactive material under exclusive use shall be excepted from the requirements of

the previous paragraph (5.4) and in

4.1.9.1.4 solely with regard to its internal surfaces and only for as long as it remains under that

specific exclusive use.

(6) Other provisions

Where a consignment is undeliverable, the consignment shall be placed in a safe location and the

competent authority shall be informed as soon as possible and a request made for instructions on

further action.