Why was the Alaskan pipeline built above ground and insulated?
A)to protect the pipeline from damage by caribou migration
B)to protect the pipeline from damage by volcanism
C)to protect the pipeline from damage due to thawing ground and to keep the oil fluid
D)to protect against damage from roots of large trees uprooted in windstorms

Question

Quizplus · Accepted Answer

The Alaskan pipeline was built above ground and insulated to protect against damage due to thawing ground and to keep the oil fluid. Insulation was necessary to prevent the permafrost from melting and destabilizing the pipeline's support structures. The above-ground design also allowed for easier maintenance and inspection. The pipeline was not built to protect against caribou migration, volcanism, or damage from uprooted trees.

Why Was the Alaskan Pipeline Built Above Ground and Insulated