TCOT – Test 1 : Producing safe water in a safe workplace
Questions With Complete Solutions
Calculate the effluent concentration if the influent concentration
is 100 milligrams per liter and the removal efficiency is 93
percent. Correct Answers 7 mg/L
Calculate the log removal value for a treatment process if the
removal efficiency is 92%. Correct Answers 1.10
Calculate the log removal value if the influent concentration is
88 milligrams per liter (mg/L) and the effluent concentration is
0.9 mg/L. Correct Answers 1.99
Calculate the removal efficiency for a treatment process if the
log removal value is 1.23. Correct Answers 94.1%
How do work practice controls protect operators from hazards?
Correct Answers By changing the way employees do their jobs
to remove exposure to potential hazards
How does Stage 1 DBPR attempt to further reduce the potential
formation of harmful DBPs? Correct Answers Requires
removal of THM precursors
How many samples must be taken weekly from a raw water
supply and tested for fecal and total coliforms for a water supply
serving 20,000 people? Correct Answers 4
How should operators check for chlorine container leaks?
Correct Answers By using ammonia water
, What are examples of toxic and harmful chemicals that
operators may encounter in and around treatment plants and
laboratories? Correct Answers Chlorine, strong acids, and
strong bases
What are fire classifications important for determining? Correct
Answers Type of fire extinguisher needed to control a fire
What are the main health concerns surrounding inorganic
chemicals in drinking water? Correct Answers Health disorders
What are the short safety meetings usually held near the work
site called? Correct Answers Tailgate safety meetings
What do total coliform counts generally indicate about a water
supply? Correct Answers Sanitary condition
What does a lockout device do? Correct Answers Uses a
positive means such as a lock to hold a switch or valve in a safe
position and prevent the equipment from becoming energized or
moving
What does the EPA use to prioritize research and data collection
efforts to help determine if a specific contaminant should be
regulated? Correct Answers Contaminant Candidate List
What hazard categories are based on the effects of the hazard?
Correct Answers Acute and Chronic
Questions With Complete Solutions
Calculate the effluent concentration if the influent concentration
is 100 milligrams per liter and the removal efficiency is 93
percent. Correct Answers 7 mg/L
Calculate the log removal value for a treatment process if the
removal efficiency is 92%. Correct Answers 1.10
Calculate the log removal value if the influent concentration is
88 milligrams per liter (mg/L) and the effluent concentration is
0.9 mg/L. Correct Answers 1.99
Calculate the removal efficiency for a treatment process if the
log removal value is 1.23. Correct Answers 94.1%
How do work practice controls protect operators from hazards?
Correct Answers By changing the way employees do their jobs
to remove exposure to potential hazards
How does Stage 1 DBPR attempt to further reduce the potential
formation of harmful DBPs? Correct Answers Requires
removal of THM precursors
How many samples must be taken weekly from a raw water
supply and tested for fecal and total coliforms for a water supply
serving 20,000 people? Correct Answers 4
How should operators check for chlorine container leaks?
Correct Answers By using ammonia water
, What are examples of toxic and harmful chemicals that
operators may encounter in and around treatment plants and
laboratories? Correct Answers Chlorine, strong acids, and
strong bases
What are fire classifications important for determining? Correct
Answers Type of fire extinguisher needed to control a fire
What are the main health concerns surrounding inorganic
chemicals in drinking water? Correct Answers Health disorders
What are the short safety meetings usually held near the work
site called? Correct Answers Tailgate safety meetings
What do total coliform counts generally indicate about a water
supply? Correct Answers Sanitary condition
What does a lockout device do? Correct Answers Uses a
positive means such as a lock to hold a switch or valve in a safe
position and prevent the equipment from becoming energized or
moving
What does the EPA use to prioritize research and data collection
efforts to help determine if a specific contaminant should be
regulated? Correct Answers Contaminant Candidate List
What hazard categories are based on the effects of the hazard?
Correct Answers Acute and Chronic
