Process Facilities - Part B

Question 1

What turbine is most likely to be used with a low head hydroelectric generating plant?

Answer 1

A propeller type turbine drive which has an arrangement to adjust the pitch of the propeller blades.

Question 2

What is the name of the plant that uses the earth as a source of energy?

Answer 2

Geothermal power plant.

Question 3

What is heavy water used for in a nuclear power plant?

Answer 3

As a moderator and a coolant.

Question 4

What component is used to prevent damage to piping and equipment in an emergency shutdown of a high head hydroelectric generating plant?

Answer 4

A surge tower.

Question 5

Magneto-hydrodynamic power plants operate at higher efficiency than fossil fuelled plants. What is the main reason for the hold-up on development of these more efficient power plants?

Answer 5

A lack of material strong enough to resist continual ionic bombardment.

Question 6

What is the source of heavy hydrogen?

Answer 6

Ocean water.

Question 7

What is a major environmental concern for thermal generation of electricity through the combustion of coal.

Answer 7

Burning coal pollutes the atmosphere with waste products from combustion.

Question 8

How is exhaust gas from a gas turbine used to produce steam for in plant processes?

Answer 8

Exhaust gas is fed into a duct burner, to raise exhaust temperature to approximately 790°C, and then fed into the firebox of the watertube boiler.

Question 9

What is the energy potential of a kilogram of uranium as compared to coal or fuel oil?

Answer 9

1kg of uranium = 20,000kg of coal, or 10,000 litres of fuel oil

Question 10

Which nuclear power plant uses natural uranium as fuel for the reactor?

Answer 10

A CANDU reactor.

Question 11

What are the two (2) primary products from a caustic thermal plant?

Answer 11

A) chlorine
B) sodium hydroxide

Question 12

What are the two (2) primary methods of pasteurization used in dairies?

Answer 12

A) high temperature/ short-term pasteurization
B) ultra-high temperature pasteurization

Question 13

What is a by-product of caustic soda attack on some of the softer metallic substances?

Answer 13

Hydrogen

Question 14

The range of combustion for hydrogen gas is from ___ to ___ at atmospheric pressure.

Answer 14

4% to 74%

Question 15

What safety hazard could be expected if hydrogen gas is allowed to escape from pressurized containment in an uncontrolled manner?

Answer 15

Hydrogen can spontaneously combust if allowed to expand rapidly from containment.

Question 16

What safety hazards can be expected from exposure to untreated water in a cooling tower?

Answer 16

Possibility to support the growth of Legion Ella bacteria.

Question 17

What finish is required for the product contact surfaces of equipment in a dairy operation?

Answer 17

Equivalent to 80 to 150 grit polish.
(Number 4 finish or smoother)

Question 18

What requirement is placed on workers who are hired to perform maintenance in a nuclear generating plant?

Answer 18

Must undergo necessary security checks & complete craft-specific training programs.

Question 19

How is steam produced for driving the turbine in a PWR nuclear plant?

Answer 19

Through a steam generator as part of a secondary loop.

Question 20

What is used to seal reactor containment buildings from escape of radioactive vapor?

Answer 20

A lining of 1/4” welded steel plate.

Question 21

What material is used as shielding against the escape of radiation from reactor containment buildings?

Answer 21

Thick layers of concrete.

Question 22

What piece of equipment provides pressure balance for a PWR cooling system?

Answer 22

A pressurization chamber.

Question 23

How is milk homogenized in a dairy?

Answer 23

By pressurizing the milk and forcing it through a valve with very small openings to disperse butterfat uniformly through milk.

Question 24

What type of alcohol is produced from grain in distilleries to create various liquors?

Answer 24

Ethanol or ethyl alcohol.

Question 25

What is a major concern for public health when working in plants that produce commodities for public consumption?

Answer 25

The possibility of disease transmission to the public is controlled by preventing exposure of food or drink being produced in the facility to organisms that can cause disease.