9/21/13 5:00 PMIELTS Exam Preparation - IELTS Writing Task 1 #92

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IELTS Exam Preparation - IELTS Writing Task 1 #92

You should spend about 20 minutes on this task.

The diagram below shows the production of steam using a gas cooled nuclear reac-tor.

Summarise the information by selecting and reporting the main features, andmake comparisons where relevant.

Write at least 150 words.

model answer:

A gas-cooled nuclear reactor consists of the reactor itself and a heat exchanger. Thereactor contains uranium fuel elements which are surrounded by graphite modera-tors and topped by charge tubes for loading fuel elements, and boron control rods.The whole reactor is contained in a pressure vessel surrounded by a concrete shield.

From the reactor the hot gas flows through a duct into the heat exchanger which is