ABC Wastewater Collection Level 3 Exam New 2024

ABC Wastewater Collection Level 3 Exam New 2024 Version Best Studying Material with All Questions and Correct Answers

Occasionally some of the people on a work crew will indulge in active horseplay. This should be

• discouraged because some of the workers might not like it
• encourage because it promotes good fellowship
• permitted as it is a form of relaxation
• stopped immediately because it is likely to cause an accident ---------- Correct

Answer ---------- D. stopped immediately because it is likely to cause an accident

A wet well probe is usually used for ________ determination(s) of level.

• approximate
• dual point
• continuous
• single point ---------- Correct Answer ---------- D. single point

The relative stability test Basic

• Requires 5 days to complete
• Involves incubation of a sample with methylene blue solution
• Is used to determine whether a sample is acidic or alkaline
• Is usually only performed on raw wastewater ---------- Correct Answer ----------- B.

Involves incubation of a sample with methylene blue solution

The relative stability test is often used in connection with wastewater treatment plants to

• Check for toxic materials that would interfere with the operation of the trickling filter
• Measure the oxygen demand of the plant effluent
• Test the raw wastewater
• None of the above ---------- Correct Answer ----------- D. None of the above

A pump is delivering at less than the expected rate of discharge. Which of the causes listed below is incorrect?

• speed of motor too low
• pump not primed
• impeller clogged
• discharge head too low ---------- Correct Answer ---------- D. discharge head too low

The gas most commonly associated with fresh wastewater is

• carbon dioxide
• carbon monoxide
• hydrogen sulfide
• oxygen ---------- Correct Answer ---------- D. oxygen
• / 3

The electrical disconnect for a pumping station motor can trip out under which one(s) of the following possibilities?

• clogged pump inlet
• low temperature
• strike by lightning
• worn packing ---------- Correct Answer ---------- C. strike by lightning

One of the electric motors in the facility has overheated and caught fire. Select the correct sequence of steps you would take.

• extinguish fire
• test
• repair
• shut off power
• remove tags and locks
• ascertain cause
• tag and lock out power

A. 1, 2, 6, 4, 7, 3, 5

B. 1, 4, 6, 7, 2, 3, 5

C. 4, 1, 7, 6, 3, 5, 2

• 4, 6, 1, 7, 3, 5, 2 ---------- Correct Answer ---------- C. 4, 1, 7, 6, 3, 5, 2

Pipe materials that are the least susceptible to corrosion by acids formed from gases generated in sewers are

A. ACP

B. CIP

C. RCP

• VCP ---------- Correct Answer ---------- D. VCP

The level of water can be measured by

• bubblers
• electrical probes
• floats
• all of the above ---------- Correct Answer ---------- D. all of the above

At a pumping station equipped with centrifugal pumps, what caused the discharge pressure to suddenly increase and the discharge quantity to suddenly decrease?

• a discharge valve was closed
• a suction valve was closed
• the pump amperage was decreased
• the voltage was suddenly increased ---------- Correct Answer ---------- A. a discharge

valve was closed

You have been directed to examine and review the plans and specifications for a new wastewater pump station prior to the advertising for construction bids. Which of the following is of least significance to your review?

• the clearance around and above pumps, motors, valves and control switch gear 2 / 3

• the provisions for ingress and egress for both wet well and dry well
• the size and geometry of the wet well
• the specific colors for all piping ---------- Correct Answer ---------- D. the specific colors

for all piping

Which one(s) of the following items should be inspected when responding to a lift station alarm at night?

• dry well
• motor control center and power panel
• operation of ventilation equipment
• all of the above ---------- Correct Answer ---------- D. all of the above

What is the greatest distance at which manholes should be installed for an 8-inch sewer line?

• 100 feet
• 200 feet
• 300 feet
• 400 feet ---------- Correct Answer ---------- C. 300 feet

Disaster planning is

• having manuals ready so they can be read if a disaster occurs
• something that, if properly done, will not need to be revised
• useful in reducing confusion in the event of a disaster
• none of the above ---------- Correct Answer ---------- C. useful in reducing confusion in

the event of a disaster

The best discipline is

• authoritarian
• general supervisory
• self-discipline
• theocratic ---------- Correct Answer ---------- C. self-discipline

Staffing a new system should be viewed primarily as the function of

• every operator
• personnel department
• the employee
• the supervisory management ---------- Correct Answer ---------- D. the supervisory

management

Organization charts are helpful to show

• how the collection system is organized
• how to locate sewers
• the structure of an agency
• the way to select solutions to problems ---------- Correct Answer ---------- C. the

structure of an agency

• / 3