Collection System Operator Exam: 1.Whenever using a hydrant for a hydraulic-cleaning operation, flushing or clean-up procedure, a. Use a pipe wrench on the valve nut to regulate the flow from the hydrant b. Use a special hydrant wench on all brass valve nuts c. Open and close the hydrant as quickly as possible to conserve water d. Never install a gate valve to a hydrant; damage may occur 2. A good example of preventative maintenance is a. Cleaning up after a SSO b. Regularly cleaning pipes kin known problem areas c. Excavating a damaged line and replacing it d. Using CCTV to examine a blockage 3. Pipe bursting is a pipe replacement method that a. Expands and stretches metal pipe to accommodate more flow b. Uses small guided drills to find and remove damaged pipe sections c. Uses a burster head to break up old pipe and insert new pipe immediately behind the head d. Forces pipe out of the ground without excavation equipment 4. The first step to starting centrifugal pumps in a lift station is typically to a. Reset the motor starters b. Calibrate the flow meters c. Fill the wet well and open the pump’s suction valves d. Start the pump briefly to examine the impeller rotation 5. Which of the following is the most effective way to protect your utility when making decisions about using chemicals and additives to control roots, grease, or odor in sewers? a. Use only products with a money-back guarantee b. Develop your own stringent evaluation program to test these products c. Request data from the manufacturer’s product testing d. No protection is needed because EPA regulates all of these products Answers: 1. B 2. B 3. C 4. C 5. B
Posted on: Mon, 12 Jan 2015 06:34:33 +0000
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