Process Facilities - Part B Flashcards
What turbine is most likely to be used with a low head hydroelectric generating plant?
A propeller type turbine drive which has an arrangement to adjust the pitch of the propeller blades.
What is the name of the plant that uses the earth as a source of energy?
Geothermal power plant.
What is heavy water used for in a nuclear power plant?
As a moderator and a coolant.
What component is used to prevent damage to piping and equipment in an emergency shutdown of a high head hydroelectric generating plant?
A surge tower.
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?
A lack of material strong enough to resist continual ionic bombardment.
What is the source of heavy hydrogen?
Ocean water.
What is a major environmental concern for thermal generation of electricity through the combustion of coal.
Burning coal pollutes the atmosphere with waste products from combustion.
How is exhaust gas from a gas turbine used to produce steam for in plant processes?
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.
What is the energy potential of a kilogram of uranium as compared to coal or fuel oil?
1kg of uranium = 20,000kg of coal, or 10,000 litres of fuel oil
Which nuclear power plant uses natural uranium as fuel for the reactor?
A CANDU reactor.
What are the two (2) primary products from a caustic thermal plant?
A) chlorine
B) sodium hydroxide
What are the two (2) primary methods of pasteurization used in dairies?
A) high temperature/ short-term pasteurization
B) ultra-high temperature pasteurization
What is a by-product of caustic soda attack on some of the softer metallic substances?
Hydrogen
The range of combustion for hydrogen gas is from ___ to ___ at atmospheric pressure.
4% to 74%
What safety hazard could be expected if hydrogen gas is allowed to escape from pressurized containment in an uncontrolled manner?
Hydrogen can spontaneously combust if allowed to expand rapidly from containment.
What safety hazards can be expected from exposure to untreated water in a cooling tower?
Possibility to support the growth of Legion Ella bacteria.
What finish is required for the product contact surfaces of equipment in a dairy operation?
Equivalent to 80 to 150 grit polish.
(Number 4 finish or smoother)
What requirement is placed on workers who are hired to perform maintenance in a nuclear generating plant?
Must undergo necessary security checks & complete craft-specific training programs.
How is steam produced for driving the turbine in a PWR nuclear plant?
Through a steam generator as part of a secondary loop.
What is used to seal reactor containment buildings from escape of radioactive vapor?
A lining of 1/4” welded steel plate.
What material is used as shielding against the escape of radiation from reactor containment buildings?
Thick layers of concrete.
What piece of equipment provides pressure balance for a PWR cooling system?
A pressurization chamber.
How is milk homogenized in a dairy?
By pressurizing the milk and forcing it through a valve with very small openings to disperse butterfat uniformly through milk.
What type of alcohol is produced from grain in distilleries to create various liquors?
Ethanol or ethyl alcohol.
What is a major concern for public health when working in plants that produce commodities for public consumption?
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.
