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Contractors World - International Vol 3 No 8
the tracks for extra grip including removable ice spikes to cope with climbing blue ice glaciers
Winch and towing attachment for pulling the cabooses
Combined crane and crevasse arm attachment on the blade
Fuel types and amounts
The main fuel used by the expedition team once ashore in Antarctica will be Jet A1 FSII which contains an ice inhibitor
enabling it to remain liquid to -75°C.
An estimated 20,000 litres will be required during the initial static phase at Novo, and 26,000 for cargo work, setting
up the camp and establishing a fuel depot at 75°S. A further estimated 100,000 litres will be required for the traverse
itself for the static phase at the end of the traverse.
The fuel will be stored in fourteen 8,000-litre bladders which have been chosen over fuel drums or tanks because
they are lighter weight and therefore require less fuel to transport.
The bladders are double walled for additional strength, and insulated. They will be transported on flexible steel and
plastic scoots which have been designed specifically for this expedition to minimise the risk of spills. The skids are large
enough to carry one of the CATs if required.
A 700-litre day tank housed in the plant room in each caboose will supply fuel to the generators and heaters in the
cabooses.
Two drums of fully synthetic engine oil will be required during the
traverse, as well as small amounts of hydraulic and lubricating oils, and
greases which will be stored in drums/cans on the outside storage section
of the science/mechanical caboose.
If a sledge with a fuel bladder falls into a crevasse the towing system
will arrest the fall and fuel will be transferred to the spare fuel bladder(s)
before the skid is extracted.
Refuelling
The 300-litre fuel tanks in the CATs will be refuelled at the end of each
day via a fuel pump housed in the plant room of each caboose. Hoses
will be attached via dry-break fittings on the plant room wall, allowing
fuel to be pumped directly from the bladders to the vehicle tanks or
into the day tanks.
Spill prevention and management
The most likely cause of a fuel spill will be during fuelling and
maintenance work. Bladder ruptures and failure are deemed low risk.
Ground penetrating radar will help detect crevasses as these pose serious
threat to the heavy equipment as previous expeditions have found out.
There is also a system to recover fuel. in the event of a machine falling
into a crevasse.