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CWEA COLLECTIONS SYSTEM
MAINTENANCE 82
QUESTIONS AND ANSWERS A
A Flagger should Stand? A. On the shoulder adjacent to traffic being controlled B. In the closed lane before stopping vehicle traffic C. In the traffic lane. D. As stated in "A" or "B" above. - √Answer :D. As stated in "A" or "B" above. Quiz :Legally responsible officials are required to report category 1 sanitary sewer overflows? A. Within 30 days B. Before end of the day C. As soon as possible D. Within 2 hours - √Answer :D. Within 2 hours Quiz :When working in confined spaces or sewers, what form of lighting would you use? A. Mirrors to direct the sunlight or explosion proof lighting. B. Ordinary electric lights C. Propane, Gas, or kerosene lanterns D. Special matches - √Answer :A. Mirrors to direct the sunlight or explosion proof lighting. Quiz :What can happen if water-based substances are used to extinguish electrical fires? a. Nothing but extinguish the fire b. The fumes are not harmful c. Receive an electrical shock
d. They will corrode the electrical contacts - √Answer :c. Receive an electrical shock Quiz :When testing a manhole for explosive gases when should the first tests be made? a. After removing the manhole cover b. Before removing the manhole cover c. At any time d. After ventilation - √Answer :b. Before removing the manhole cover Quiz :Atmospheric hazards encountered in manholes can include: a. non-explosive atmospheres. b. non-toxic atmosphere. c. lack of oxygen. d. non-flammable atmospheres. - √Answer :c. lack of oxygen. Quiz :When setting up to ventilate a manhole, the air inlet should be how many feet above street level? a. 4. b. 3. c. 2. d. 1.0 - √Answer :c. 2. Quiz :Which chemical may be used for odor control in a sewer system? a. Calcium chloride b. Hydrogen peroxide c. Oxidized aluminum d. Sodium chloride - √Answer :b. Hydrogen peroxide
Quiz :What are the three duties of personnel in a Confined Space entry? a. Authorized entrants, parking attendants, entry supervisors. b. Unauthorized entrants, attendants, entry supervisors. c. Authorized entrants, attendants, entry supervisors. d. Authorized entrants, attendants, evening supervisors - √Answer :c. Authorized entrants, attendants, entry supervisors. Quiz :What is an important element of hydrogen sulfide production? a. Flow velocity. b. Pipe materials. c. Amount of odor present. d. Amount of inorganic materials. - √Answer :a. Flow velocity. Quiz :Which of the following is the most common factor leading to the generation of hydrogen sulfide in sewers? a. Anaerobic conditions. b. Constantly high velocity of flow in sewers. c. Low concentrations of ferrous sulfide. d. Presence of highly soluble fats and oils. - √Answer :a. Anaerobic conditions. Quiz :A category 2 SSO is: a. any SSO which does not reach surface waters. b. not reportable. c. preventable. d. any SSO which is not category 1. - √Answer :d. any SSO which is not category 1.
Quiz :Which tool would you use for cleaning under a pipe, or hard dirt near a pipe? a. Miner's pick. b. Wrench. c. Drill. d. Hammer. - √Answer :a. Miner's pick. Quiz :A torque wrench is used to tighten which device? a. Pipe clamp. b. Drill chuck. c. Light bulb. d. Sheet metal screw - √Answer :a. Pipe clamp. Quiz :Which unit uses high water pressure and a vacuum to clean sewer lines? a. Jetter b. Mechanical rodder c. Combination unit d. Bucket machine - √Answer :c. Combination unit Quiz :In sewer maintenance, what is a pig? a. A ball forced through a sewer line. b. A power rod. c. Any foul smelling equipment. d. The hydraulic rodding truck. - √Answer :a. A ball forced through a sewer line. Quiz :When pouring a concrete slab, which of the following tools is used to finish the concrete? a. Grasshopper. b. Tamper. c. Trowel.
Quiz :Drawings which are considered "As Built" would be? a. Construction drawings issued to the contractor. b. Corrected construction drawings showing changes made in the field installation. c. Detailed drawings of proposed construction. d. Sectional maps on file. - √Answer :b. Corrected construction drawings showing changes made in the field installation. Quiz :In lieu of a shorting system, the sides or the walls of an excavation, or trench, may be: a. sloped 3:1. b. sloped 1:3. c. sloped 2:1. d. sloped 1:1. - √Answer :a. sloped 3:1. Quiz :When a water main must be laid under a sewer main, the sewer pipe must be: a. lined with epoxy. b. cleaned carefully. c. replaced with water type pipe with pressure tight joints. d. taken out while the water main is being installed. - √Answer :c. replaced with water type pipe with pressure tight joints. Quiz :Hydrogen peroxide controls odors in sewers by: a. decreasing the dissolved oxygen. b. neutralizing the PH. c. oxidizing sulfide compounds. d. providing a source of hydrogen ions. - √Answer :c. oxidizing sulfide compounds.
Quiz :Construction of a wastewater pipeline under a highway or railway without disrupting the traffic is done by? a. Drag lining. b. Dredging. c. Embankment excavation. d. Boring and jacking. - √Answer :d. Boring and jacking. Quiz :When a grade conflict exists between a water main and a sewer main, which of the following is the best solution? a. Build a manhole around the sewer main and continue the water main through the manhole. b. Drop the sewer service under the water main and let it work like a siphon. c. Have the water main adjusted and hold the grade on the sewer main. d. Raise the sewer over the water main and install a sewer pump station. - √Answer :c. Have the water main adjusted and hold the grade on the sewer main. Quiz :The reason newly constructed collection system sewers should be inspected is to: a. determine if the contractor has complied with plans and specifications. b. determine if smoke tests will be successful. c. determine if dye tests will be successful. d. determine if the streets are paved. - √Answer :a. determine if the contractor has complied with plans and specifications. Quiz :A source of infiltration in a collection system is:
Quiz :Anaerobic wastewater is frequently corrosive to materials it contacts, especially: a. coal tar enamel. b. concrete. c. stainless Steel. d. plastic. - √Answer :b. concrete. Quiz :Pipe materials that are the least susceptible to corrosion by acids formed from gases generated in sewers is: a. ACP. b. CIP. c. RCP. d. VCP. - √Answer :d. VCP. Quiz :Repairs to manholes include: a. adjusting the alignment. b. correcting cavitation damages. c. raising frame and cover to grade. d. tightening packing - √Answer :c. raising frame and cover to grade. Quiz :Liners are installed in sewers to correct problems caused by: a. grade alignment. b. grease. c. grit. d. infiltration. - √Answer :d. infiltration. Quiz :A kilowatt is the equivalent of: a. 0.67 amperes at a voltage of 120. b. 1.34 horsepower. c. 746 watts.
d. 1,000 megacycles. - √Answer :b. 1.34 horsepower. Quiz :What factors should be considered when providing trench shoring? a. Grade of sewer. b. Pipe material. c. Structures or sources of vibration near trenches. d. Cost of shoring. - √Answer :c. Structures or sources of vibration near trenches. Quiz :When sewer line grades are too flat, an odor problem is likely to result. The most likely cause of the odor problem is decreased velocity which: a. allows decomposable solids to settle. b. decreases the treatment time in the lines. c. increases the treatment time of inorganic solids. d. allow decomposable solids to be suspended. - √Answer :a. allows decomposable solids to settle. Quiz :After a collection system problem has been solved, you should: a. wait until next week to fill out the report forms. b. take a break. c. go home. d. evaluate the effectiveness of the results. - √Answer :d. evaluate the effectiveness of the results. Quiz :Improper connections can be detected through: a. DO tests. b. soundings. c. TV inspection. d. radar. - √Answer :c. TV inspection.
c. Attach pull cable to a backhoe and pull is out. d. Wait awhile to see if it will free itself. - √Answer : Quiz :A Category 1 SSO is: a. any volume reaching surface waters. b. any volume entering a storm drain and not recovered . c. any spill greater than 1000 gallons. d. all of the above. - √Answer : Quiz :In a 25 MPH zone, Distance of Flagger Station in Advance of the Work Space should be: a. 155 feet b. 15 feet c. 25 feet d. Unimportant - √Answer : Quiz :A condition which can cause cavitation in a pump is: a. an air leak on suction side. b. clear water being pumped. c. a fully opened suction valve. d. operating within design curve. - √Answer : Quiz :Where is a check valve for a lift station pump installed? a. Between the discharge isolation valve and the discharge port of the pump. b. Between the suction isolation valve and the line through the wet well wall. c. Between the suction port of the pump and the suction isolation valve for the pump.
d. Downstream, just beyond the discharge isolation valve for the pump. - √Answer : Quiz :Upon inspection of a lift station, an operator observes that the pump is not running and the circuit breakers will not reset. Which of the following is most likely the cause? a. A misaligned belt drive. b. An improper wet well sensor adjustment. c. A clogged pump. d. A blown fuse. - √Answer : Quiz :The electrical disconnect for a pumping station motor can trip out under which condition? a. Pump cavitation. b. Low temperature. c. Strike by lightning. d. Worn packing. - √Answer : Quiz :"enclosed", "open", and "semi-closed" are terms used to describe what pump part? a. Stuffing box b. Lantern ring c. Impeller d. Bearings - √Answer : Quiz :What is a typical bubbler type controller failure? a. Air compressor failed b. Broken float line c. Short in electrode leads d. Electrode coated with grease - √Answer :
b. Pump is primed. c. Impeller clogged. d. Discharge head too low. - √Answer : Quiz :A maintenance budget: a. is not concerned with capitol replacement. b. does not consider equipment-operating conditions. c. must be justifiable. d. does not relate to future needs. - √Answer : Quiz :Which of the following governs employee behavior? a. Unions b. Rules prepared by the manager c. The grapevine d. The buddy system - √Answer : Quiz :A good manager: a. sets goals. b. waits for an emergency to happen. c. resists changes. d. blames others for his mistakes. - √Answer : Quiz :Planning which covers a period of five to fifteen years is called: a. scheduling. b. long range. c. updating. d. future modeling. - √Answer : Quiz :The main purpose of a policy is to: a. explain how higher management wants work done. b. excuse managers from making decisions.
c. provide guidelines for not making decisions. d. provide coverage against loss. - √Answer : Quiz :Performance appraisal forms: a. should not be discussed with the employee. b. make the employee evaluation process consistent. c. should not contain a rating scale. d. must be limited to three judging factors. - √Answer : Quiz :Who develops Material Safety Data sheets? a. Management b. Manufacturer c. Salesman d. Safety officer - √Answer : Quiz :Responsibilities of supervisors and managers for a safety program include: a. not providing a written safety policy. b. never provide safety training. c. identify and correct unsafe work practices. d. never investigate accidents. - √Answer : Quiz :What is the intent of the OSHA regulations? a. To provide adequate staffing. b. To put managers in jail. c. To provide a safe work environment. d. To provide a safe home environment. - √Answer : Quiz :What are the four major types of records a utility must maintain? a. Equipment/maintenance, operations, procurement/inventory, personal.
Quiz :Decentralization of organization refers to? a. Nominating new supervisors. b. Looking at all positions, and possibly redelegating authority. c. Firing all employees and hiring new ones. d. Eliminating some departments. - √Answer : Quiz :What do organization charts represent? a. How the collection system structures are organized. b. How to locate sewers. c. The structure of an agency. d. The way to select solutions to problems. - √Answer : Quiz :While evaluating an applicant for employment, which one of the following may enter into your decision? a. Age b. Education level c. Minority classification d. Gender - √Answer : Quiz :The best way to record all work is done through a: a. closed circuit TV. b. Polaroid system. c. tape recorder. d. work order system - √Answer : Quiz :The most important function of record keeping is: a. record how much money was budgeted and how much was spent. b. record the past and provide a sound basis on which to plan the future. c. record what was done and when it was done.
d. record where the company has been, and how they got where they are today. - √Answer : Quiz :What should financial management provide for a collection system? a. Capital improvement funds, careful budgeting, financial stability. b. Careful budgeting, financial stability, prudent investment of financial reserves. c. Careful budgeting, financial stability, lowest possible bond rates. d. Lowest possible bond rates, financial stability, capital improvement funds. - √Answer : Quiz :An organization chart for a utility can be helpful for several reasons. Which of the following is the least valid objective of an organization chart? a. To establish proper chain of command authority. b. To help develop a budget. c. To help in making up project schedules. d. To help in scheduling emergencies - √Answer : Quiz :
