Description
This cargo is generally a concentrate stream resulting from the processing
of heavy mineral sands. Such mineral sand concentrates are characterized by their heavy
bulk density and relatively fine grain size. This schedule includes concentrates of
sands containing natural or depleted uranium and thorium, including metals, mixtures and
compounds.
Abrasive. May be dusty. This cargo is cohesive if moisture content is above
1%.
Characteristics
| Physical properties
|
| Size
|
Angle of
repose
|
Bulk density
(kg/m3)
|
Stowage factor
(m3/t)
|
| Fine
Particles up to 2 mm
|
Approximately 35°
|
2,200
to 3,225
|
0.31
to 0.45
|
| Hazard classification
|
| Class
|
Subsidiary
hazard(s)
|
MHB
|
Group
|
| 7
|
Not
applicable
|
TX and
CR
|
A and
B
|
Hazard
This cargo may liquefy if shipped at a moisture content in excess of its
transportable moisture limit (TML). See sections 7 and 8 of this Code.
Low radiotoxicity.
May cause long-term health effects and skin irritation.
Prolonged and repeated exposure to silica dust can result in respiratory
disease.
This cargo is non-combustible or has a low fire risk.
Stowage and segregation
"Separated from" foodstuffs.
Hold cleanliness
Clean and dry as relevant to the hazards of the cargo.
Weather precautions
When a cargo is carried in a ship other than a ship complying with the
requirements in 7.3.2 of this Code, the following provisions shall be complied with:
-
.1 the moisture content of the cargo shall be kept less than its
TML during loading operations and the voyage;
-
.2 unless expressly provided otherwise in this individual schedule,
the cargo shall not be handled during precipitation;
-
.3 unless expressly provided otherwise in this individual schedule,
during handling of the cargo, all non-working hatches of the cargo spaces into
which the cargo is loaded, or to be loaded, shall be closed;
-
.4 the cargo may be handled during precipitation under the
conditions stated in the procedures required in 4.3.3 of this Code; and
-
.5 the cargo in a cargo space may be discharged during
precipitation provided that the total amount of the cargo in the cargo space is
to be discharged in the port.
Loading
Trim in accordance with the relevant provisions required under sections 4
and 5 of this Code. As the density of the cargo is extremely high, the tank top may be
overstressed unless the cargo is evenly spread across the tank top to equalize the
weight distribution. Due consideration shall be given to ensure that the tank top is not
overstressed during the voyage and during loading by a pile of the cargo.
Precautions
Personnel shall not be unnecessarily exposed to dust of this cargo. Persons
who may be exposed to the dust of the cargo shall wear protective clothing, goggles or
other equivalent dust eye-protection and dust filter masks. There shall be no leakage
outside the cargo space in which this cargo is stowed.
Ventilation
The cargo spaces carrying this cargo shall not be ventilated during
voyage.
Carriage
All instructions provided by the shipper shall be followed for the carriage
of this cargo. The appearance of the surface of this cargo shall be checked regularly
during the voyage. If free water above the cargo or fluid state of the cargo is observed
during the voyage, the master shall take appropriate actions to prevent cargo shifting
and potential capsize of the ship, and give consideration to seeking emergency entry
into a place of refuge.
Discharge
All instructions provided by the shipper shall be followed for the discharge
of this cargo.
Clean-up
Cargo spaces used for this cargo shall not be used for other goods until
decontaminated. Refer to 9.3.2.3 of this Code.
Emergency procedures
| Special emergency equipment to
be carried
|
| Protective clothing (gloves,
boots, coveralls and headgear).
Self-contained breathing
apparatus.
|
| Emergency
procedures
|
| Wear protective clothing and
self-contained breathing apparatus.
|
| Emergency action in the event
of fire
|
| Batten down; use ship's fixed
fire-fighting installation, if fitted.
Use water spray to
control spread of dust, if necessary.
|
| Medical first aid
|
| Refer to the Medical First Aid
Guide (MFAG), as amended.
|
Remarks
Most materials are likely to be non-combustible. Speedily collect and
isolate potentially contaminated equipment and cover. Seek expert advice.