Study guides, Class notes & Summaries

Which welding process is most commonly used for SMALL pipe maintenance welding? OxyAcetylene gas welding What is the proper definition of an engine? It is a machine designed to convert energy into useful mechanical motion What is wet stacking and how can it be prevented? It is unburned fuel collecting in the exhaust due to light or no load conditions To check flywheel face runout, where should the dial indicator be positioned? The base on the bell housing and pointer on the flywheel fac...

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. D. As stated in "A" or "B" above. 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 D. Within 2 hours When working in confined spaces or sewers, what form of ligh...

CWEA COLLECTIONS GRADE 1 Correctly Answered 2024 Sewer maintenance vehicles are - Answer -difficult to maneuver At low concentrations, hydrogen sulfide smells like - Answer -Rotten Eggs which safety hazard in a collection system operations can be detected by an insturment? - Answer -Toxic Gases What must be checked first before entering a manhole? - Answer -Proper barricades or warning devices around manhole. When should field crews use signs and cones? - Answer -When over half the stree...

CWEA - LAB ANALYST III with Correct Answers 2024 What does COLOR measure? - Answer -Amount of color units (CU) in a sample. Color caused by natural metallic ions (Fe & Mg) & industrial wastes. What is the test summary for COLOR? - Answer -Sample -> Tubes -> Compare to color standards over light source Which of the following techniques is used to isolate anionic surfactants (as MBAS) from the sample matrix? - Answer -Extraction In the cyanide determination, which one of the followin...

CWEA LAB ANALYST COMPLETE SET Questions and Correct Solutions 2024 An amperometric titration is often used when measuring - Answer -Residual chlorine The most important reason for chlorinating effluent is - Answer -Disinfection Chlorination serves primarily to destroy or deactivate disease-producing microorganisms When wastewater samples are chlorinated and the pH is lowered - Answer -HCLO is formed Hypochlorous acid Which of the following constituents is the best disinfecting agent? - An...

WASTEWATER LABORATORY ANALYST CERTIFICATION EXAM PRACTICE Questions and Correct Answers 2024 Within the federal government, the following branch generates laws: (a) Congress (b) Office of the President (c) Supreme Court (d) Library of Congress - Answer -A Explanation Just a little reminder from your high school government class. The federal government is divided into 3 branches: executive - the President; legislative - Congress (the Senate and the House of Representatives); and judici...

CWEA LAB ANALYST GRADE I VOCAB Questions and Correct Solutions 2024 40 CFR 121- 124 - Answer -The federal storm water regulations for the permitting of municipalities and industries. Regulations define storm water terms, permitting, inspecting, and sampling measurements 40 CFR 136 - Answer -The regulations for sampling preservation and analyses of water, wastewater, and solid waste 40 CFR 403 - Answer -The federal regulations defining the elements of a pretreatment program, prohibited dis...

CWEA LAB ANALYST GRADE 1 Questions and Correct Solutions 2024 Celcius - Answer -(F-32)5/9 HPC media water bath - Answer -45`C, 3hr Precision - Answer -a measure of how close a series of measurements are to one another Accuracy - Answer -how close a measurement is to the true value Electrical Fire - Answer -unplug & sodium bicarbonate analytical balance - Answer -a device for determining mass that gives highly accurate measurements top loading balance - Answer -used to determine mass; not...

CWEA COLLECTION SYSTEMS MAINTENANCE EXAM 2024 Why are gasoline and volatile solvents objectionable when present in a sewer? - correct answer They produce an explosion hazard You should never attempt to install, maintain, repair or replace electrical equipment panels, controls, wiring or circuits unless - correct answer You know what you are doing, are qualified and are authorized What are the different areas of traffic zones? - correct answer Advance Warning Area, Transition Area, Ac...