I. Reading Exercises:

Exercise 1. Read and translate using a dictionary:

A grid type structure, stainless steel, be compatible, the cladding, adjustment, are consumed, fertile materials, shielding, reactor scram, reversible drive system.

Exercise 2. Answer the questions:

1. What properties must structural materials employed in reactor system possess ?

2. How do reactors maintain a separation of fuel and coolant?

3. When is a reactor critical?

4. How can the control drive be operated?

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Exercise 3. Match the left part with the right:

Aluminum is widely used	for fuel cladding in fast reactors
The cladding materials must	the movement of neutron-absorbing rods (control rods) in the reactor under carefully controlled conditions.
Stainless steel is used for	in low-temperature test and research reactors.
The reactor control system requires	also have favorable nuclear properties

Exercise 4.

Open brackets choosing the right words:

The neutron-capture cross section is (most/less) significant because the (unwanted/desired) absorption of neutrons by these materials (reduces/increases) efficiency of the nuclear fission process.

II. Speaking Exercises:

Exercise 1. Describe core design and control using the suggested words and expressions:

Core design

Rods, grid-type structure, be compatible, coolant, cladding, the release of radioactivity, corrosion resistance

Control

The rate of absorption, measurement and adjustment, are consumed, subcritical, supercritical, control rods, reactor scram.

Exercise 2. Ask questions to the given answers:

1) Question: ________________________________________

A typical reactor core for a power reactor consists of the fuel element rods supported by a grid-type structure inside vessel

2) Question:__________________________________________________

The most common structural materials employed in reactor systems are stainless steel and zirconium alloys

3) Question:___________________________________________________

Reactors are controlled by adjusting the balance between neutron production and neutron consumption.

III. Writing exercises:

Exercise 1. Complete the sentences with the suggested words:

are consumed, to cause, requires, capture, are produced

The control of reactors _________ the continuing measurement and adjustment of the critical condition. The neutrons ______ by the fission process and __________ in a variety of ways, including absorption _________ fission, nonfission capture in fissionable materials,________ in fertile materials, capture in structure or coolant, and leakage from the reactor to the shielding.

Exercise 2. Fill in the table with words and expressions from the text:

	Parts	Properties	Process
A typical reactor core for a power reactor consists of
Structural material employed in reactor systems must possess
Control drives are
A reactor is subcritical

Exercise 3. Compose a story on the following topics (up to 100 words):

“Core design”

“Control”