Featured Quizzes
User Quizzes
Create Quiz
Data and Charts
Word Search
Badges and Games
About JetPunk
Message Board
Dark Mode
Texas Basic Waste Water Operations Ch#05 The Collection System - Statistics
General Stats
- This quiz has been taken 26 times
- The average score is 32 of 38
Answer Stats
| Question | Answer | % Correct |
|---|---|---|
| Lift station designs include ________. | all of the above | 100%
|
| Maps should be as built, showing corrections made in the field during ________. | construction | 100%
|
| Records include a ________ checklist. | daily | 100%
|
| If gasoline or solvent odors are detected in a manhole, the operator should hold their breath while opening. | False | 100%
|
| The primary cause of stoppages is roots or ________. | grease | 100%
|
| Wastewater flowing into a collection system should come from ________. | homes, businesses, AND industry | 100%
|
| Foreign matter in the ________ can cause noisy operation and should be investigated. | impeller | 100%
|
| Dry well stations have the ________ and pumps in a dry well separated from the adjacent wet well. | motors | 100%
|
| A ________ maintenance program keeps emergency repairs to a minimum. | preventive | 100%
|
| ________ are important to lift station operation and maintenance. | Records | 100%
|
| Wastewater cleaning can increase pipe capacity, prevent septic conditions, maintain flow velocity, and ________. | reduce stoppages | 100%
|
| When chemicals are used in the system, consider worker and public ________. | safety | 100%
|
| If a pump loses prime, it will heat up and damage the ________. | seal | 100%
|
| Hydrogen sulfide is very toxic and deadens the sense of ________. | smell | 100%
|
| ________ pumps in dry wells collect packing seal leakage as well as cleanup water. | Sump | 100%
|
| The purpose of the collection system is to collect and transport waste to the point of treatment. | True | 100%
|
| Parts of a collection system include wastewater lines, wastewater crossings, inverted siphons, cleanouts, manholes, and lift stations. | True | 100%
|
| Safety rules for manholes include checking for gases and sufficient oxygen, wearing a lifeline, and having two workers assisting at the surface. | True | 100%
|
| Grade (or slope) and flow velocity are important to wastewater pipe installation. | True | 100%
|
| To reduce gases, the TCEQ requires lift stations to have a ________ system. | ventilation | 100%
|
| Hydraulic cleaners (jetting units) use ________ under pressure, which is forced through nozzles. | water | 100%
|
| A ladder must be within ________ feet of anyone in the trench. | 25 | 75%
|
| OSHA sets standards for shoring, sloping, or trench boxes for trenches ________ feet or deeper. | 5 | 75%
|
| The ________ pump is most commonly used in a lift station | centrifugal | 75%
|
| The ________ valve, usually a swing type, prevents water on the discharge side of the pump from flowing backwards through the pump when it is off. | check | 75%
|
| The most important benefit of a collection system is comfort and convenience. | False | 75%
|
| Pipe materials used in collection system construction include polyvinyl chloride, clay, concrete, and bituminous fiberboard. | False | 75%
|
| Common methods to detect liquid depths and control pumps are ________, pneumatic bubblers, electric probes, and ultrasonic sensors. | floats | 75%
|
| The best design of isolation valve is the ________ valve because it leaves an unrestricted path when fully open. | gate | 75%
|
| The ________ valve is the most commonly used valve in the collection system. | gate | 75%
|
| When wastewater cannot flow to treatment by ________, a lift station is used. | gravity | 75%
|
| Motors used in wastewater are typically three-phase ________ motors. | induction | 75%
|
| Excavation spoil must be at least ________ feet from the edge of the trench. | 2 | 50%
|
| If a ladder is used, it must be portable and extend ________ feet above the trench, in addition to being secured. | 3 | 50%
|
| If the trench is ________ feet or deeper, a means of exit is required. | 4 | 50%
|
| Install wastewater lines no closer to a water line than ________ feet. | 9 | 50%
|
| For any gravity wastewater, the minimum velocity required to keep solids in suspension is 1ft/sec. | False | 50%
|
| Pipe should be laid down so that the bell end is facing downstream or downhill. | False | 25%
|
No matching quizzes found
Score Distribution
Percent of People with Each Score
Percentile by Number Answered
Your Score History
You have not taken this quiz
New and Popular