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Alaska Pipeline: Problems and Solutions
Matching exercise
Match the items on the right with the items on the left.
Check
The Beaufort Sea is frozen for most of the year
???
Oil heated in pipeline and pumped at 80*C.
Pipeline on sleepers to allow sideways movement.
Pipeline built on stilts 3 metres above the ground.
Pipeline built across Alaska to ice free port of Valdez.
Pylons sunk through active zone to give stability.
Air temperature goes down to minus 50*C
???
Oil heated in pipeline and pumped at 80*C.
Pipeline on sleepers to allow sideways movement.
Pipeline built on stilts 3 metres above the ground.
Pipeline built across Alaska to ice free port of Valdez.
Pylons sunk through active zone to give stability.
Surface thawing and movement occurs in summer
???
Oil heated in pipeline and pumped at 80*C.
Pipeline on sleepers to allow sideways movement.
Pipeline built on stilts 3 metres above the ground.
Pipeline built across Alaska to ice free port of Valdez.
Pylons sunk through active zone to give stability.
The pipeline crosses an earthquake belt
???
Oil heated in pipeline and pumped at 80*C.
Pipeline on sleepers to allow sideways movement.
Pipeline built on stilts 3 metres above the ground.
Pipeline built across Alaska to ice free port of Valdez.
Pylons sunk through active zone to give stability.
The pipeline crosses caribou migration routes
???
Oil heated in pipeline and pumped at 80*C.
Pipeline on sleepers to allow sideways movement.
Pipeline built on stilts 3 metres above the ground.
Pipeline built across Alaska to ice free port of Valdez.
Pylons sunk through active zone to give stability.
Check
OK
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