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Questions and Answers
What should you do two months prior to taking the ABC certification exam?
What should you do two months prior to taking the ABC certification exam?
Where can you find the need-to-know criteria for the ABC exam?
Where can you find the need-to-know criteria for the ABC exam?
What is the minimum score required to pass the ABC certification exam?
What is the minimum score required to pass the ABC certification exam?
Why should you not make a choice based on the frequency of previous answers?
Why should you not make a choice based on the frequency of previous answers?
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What should you do if you are not sure of the answer to a question?
What should you do if you are not sure of the answer to a question?
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Why is it important to read every question carefully?
Why is it important to read every question carefully?
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What should you do if you don't know the answer to a question?
What should you do if you don't know the answer to a question?
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Why is it important to pace yourself during the exam?
Why is it important to pace yourself during the exam?
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What is the unit of measurement for electrical current?
What is the unit of measurement for electrical current?
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What procedure is required to avoid the risk of accidental operation of related equipment while working on an electrical system?
What procedure is required to avoid the risk of accidental operation of related equipment while working on an electrical system?
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What is the minimum permissible oxygen level required for a workspace?
What is the minimum permissible oxygen level required for a workspace?
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What type of valve is used to prevent water from flowing backwards through a pump?
What type of valve is used to prevent water from flowing backwards through a pump?
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What type of level sensing technology does not come in contact with the flow during normal operation?
What type of level sensing technology does not come in contact with the flow during normal operation?
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How does a variable frequency drive regulate pump flow?
How does a variable frequency drive regulate pump flow?
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What type of motor is commonly used in a wet well-only pumping station?
What type of motor is commonly used in a wet well-only pumping station?
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What is the term for the equipment worn to protect workers from hazards?
What is the term for the equipment worn to protect workers from hazards?
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What should you look for when inspecting a pump impeller?
What should you look for when inspecting a pump impeller?
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What type of flow monitoring device is most accurate for monitoring flow in an open channel that experiences surcharge conditions?
What type of flow monitoring device is most accurate for monitoring flow in an open channel that experiences surcharge conditions?
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What is the term for the bottom of the inside of a sewer pipe?
What is the term for the bottom of the inside of a sewer pipe?
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What is the purpose of using variable-frequency drives in pumping stations?
What is the purpose of using variable-frequency drives in pumping stations?
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What is the term for regular cleaning of areas in the sewer system that have frequent blockages?
What is the term for regular cleaning of areas in the sewer system that have frequent blockages?
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What is the classification of 1,000 ppm of hydrogen sulfide gas?
What is the classification of 1,000 ppm of hydrogen sulfide gas?
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What type of pumping station has separate chambers for the wastewater and the pumps?
What type of pumping station has separate chambers for the wastewater and the pumps?
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What type of structure is used to go under obstructions such as rivers and highways?
What type of structure is used to go under obstructions such as rivers and highways?
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What can a CCTV camera reveal before removing roots or debris with a hydraulic cleaning nozzle?
What can a CCTV camera reveal before removing roots or debris with a hydraulic cleaning nozzle?
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What is the primary goal of a Capacity, Management, Operations, and Maintenance (CMOM) program?
What is the primary goal of a Capacity, Management, Operations, and Maintenance (CMOM) program?
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Which of the following is not a basic pipe material commercially available for gravity sewer construction?
Which of the following is not a basic pipe material commercially available for gravity sewer construction?
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What is the correct method for manhole renewal in structures that are unsound?
What is the correct method for manhole renewal in structures that are unsound?
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Where should materials be removed from if a public sewer main is experiencing a sanitary sewer overflow (SSO)?
Where should materials be removed from if a public sewer main is experiencing a sanitary sewer overflow (SSO)?
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What activity can be combined with predictive, scheduled, and corrective maintenance at a lift station?
What activity can be combined with predictive, scheduled, and corrective maintenance at a lift station?
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How are pumps typically categorized?
How are pumps typically categorized?
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What is the primary goal of removing roots or debris from a sewer main?
What is the primary goal of removing roots or debris from a sewer main?
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What is another name for kinetic energy pumps?
What is another name for kinetic energy pumps?
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What is the term for short-lived transient pressure conditions in force mains and pressure pipes?
What is the term for short-lived transient pressure conditions in force mains and pressure pipes?
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What type of current do electric motors in a sewer lift station typically use?
What type of current do electric motors in a sewer lift station typically use?
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What is the minimum ventilation requirement in a dry well of a sewer lift station according to the Ten State Standards?
What is the minimum ventilation requirement in a dry well of a sewer lift station according to the Ten State Standards?
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What does SCADA stand for?
What does SCADA stand for?
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How is pump capacity typically expressed?
How is pump capacity typically expressed?
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What is the range of the optimum velocity in force mains?
What is the range of the optimum velocity in force mains?
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What is the purpose of a lightning arrester?
What is the purpose of a lightning arrester?
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Study Notes
Wastewater Collection Operator Certification Practice Exam
- To prepare for the exam, become familiar with the need-to-know criteria and study for at least two months prior to taking the exam.
Tips for Taking the Exam
- Allow plenty of time to drive to the exam site and don't forget your ID.
- Read every question carefully to determine exactly what is being asked, and eliminate choices that are not possible.
- Pace yourself, and don't spend too much time on one question.
- Remember, you don't need to score 100% on the exam to pass, and you can pass with a score of 70% or higher.
Electrical Concepts
- Electrical current is measured in amps.
- Lockout/tagout procedures are required to avoid the risk of accidental operation of related equipment while working on an electrical system.
Safety and Health
- The minimum permissible oxygen level required for a work space is 19.5%.
- Face shields, gloves, and steel-toed work shoes are known as personal protection equipment.
Pumping and Flow Control
- A variable frequency drive will regulate pump flow by adjusting the pump's speed.
- When monitoring flow in an open channel that experiences surcharge conditions, a Parshall flume and a depth pressure sensor will provide the most accurate measurements.
- Inverted siphons are used to go under obstructions such as rivers, highways, and utilities.
Valve and Pipe Systems
- The type of valve used to prevent water from flowing backwards through a pump is called a check valve.
- The bottom of the inside of a sewer pipe is called the invert.
- Regular cleaning of areas in the sewer system that have frequent blockages is called preventive maintenance.
Wastewater Treatment and Collection
- A large pumping station that has separate chambers for the wastewater and the pumps is called a drywell pumping station.
- One thousand parts per million (ppm) of hydrogen sulfide gas is classified as immediately dangerous to life or health (IDLH).
- A capacity, management, operations, and maintenance (CMOM) program will improve the performance of the collection system.
Pipe Materials and Construction
- The type of pipe material commercially available for gravity sewer construction includes ductile iron, polyethylene, and polyvinyl chloride.
- Fiber-reinforced plastic pipe is used for manhole renewal in structures that are unsound.
Pump and Motor Operations
- Pumps are typically categorized as either kinetic energy pumps or positive-displacement pumps.
- Electric motors are designed for either alternating or direct current.
- Pump capacity is typically expressed in gallons per minute (gpm) or million gallons per day (mgd).
SCADA and Control Systems
- SCADA stands for Supervisory Control and Data Acquisition.
- Short-lived transient pressure conditions in force mains and pressure pipes are known as water hammer.
Ventilation and Safety Requirements
- The "Ten State Standards" minimum ventilation requirement in a dry well of a sewer lift station is 30 air changes per hour intermittently or six air changes per hour continuously.
Miscellaneous
- A lightning arrester is a protective device for limiting the high surge voltages on equipment by releasing a surge current to the atmosphere.
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Description
Practice exam questions for Grades 1 & 2 wastewater collection operator certification, including tips and study advice for the ABC exam.
