Technical lessons
Collection Systems operator lessons
Collection-system lessons cover sewers, lift stations, inflow and infiltration, cleaning, inspection, safety, and emergency response.
Lesson 1
Gravity Sewer Systems
Gravity sewers use slope to move wastewater from homes and businesses toward lift stations or treatment plants.
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Lesson 2
Lift Stations
Lift stations pump wastewater from low areas to higher elevations so it can continue toward treatment.
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Lesson 3
Inflow and Infiltration
I&I is unwanted water entering sanitary sewers through direct connections or leaks.
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Lesson 4
Sewer Cleaning Methods
Sewer cleaning removes roots, grease, grit, debris, and obstructions before they cause backups or overflows.
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Lesson 5
Confined-Space Hazards
Collection systems contain confined spaces with atmospheric, engulfment, fall, and access hazards.
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Lesson 6
CCTV Pipe Inspection
Closed-circuit television inspection lets operators see defects, blockages, and service connections inside sewer pipes.
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Lesson 7
Grease and FOG Control
FOG means fats, oils, and grease that can solidify in sewers and cause blockages.
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Lesson 8
Sewer Overflows
Sanitary sewer overflows release untreated wastewater and require quick response, cleanup, documentation, and reporting.
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Lesson 9
Force Mains
Force mains carry pumped wastewater under pressure from lift stations to gravity sewers or treatment facilities.
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Lesson 10
Manhole Inspection
Manholes provide access to sewers and are frequent sources of I&I, corrosion, and safety hazards.
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