Wastewater Collection Operator Class III case studies
Wastewater Collection Operator Class III · Put your knowledge to work in context.
The Wastewater Collection Operator Class III credential is a mid-to-advanced level certification for people who operate and maintain the sewers, lift stations, and force mains that carry wastewater from homes and businesses to the treatment plant. It is typically pursued by collection system operators who already have several years of hands-on field experience and are ready to take on lead responsibility for crews, complex maintenance jobs, and emergency response. The Wastewater Collection Operator Class III case studies are 5 cases and about 3,077 words.
1Grease Block in a 10-Inch Line Under a Commercial Strip
Crews are called to a repeat backup at a 10-inch vitrified clay sanitary main laid at 0.6% slope beneath a strip mall. The line runs 380 feet between manholes.
647 words, about 3 min2New 8-Inch PVC Main Fails Air Test Before Acceptance
A developer's contractor has installed 1,050 feet of new 8-inch SDR-35 PVC gravity main at 0.5% slope, with four manholes, as part of a subdivision extension that will be dedicated to the utility. The contractor requests acceptance testing.
640 words, about 3 min3Wet-Well Level Alarm During a Holiday Weekend
A duplex submersible lift station serves a residential basin of about 1,200 homes. Each pump is rated 350 gpm at the design head; the wet well is 8 feet in diameter with a 10-foot operating depth.
648 words, about 3 min4Smoke Testing Reveals Storm Connections in a Sanitary Basin
A utility is under a consent-order deadline to reduce infiltration/inflow (I/I) in a 1950s-era sanitary basin of about 60 miles of pipe. The utility runs smoke testing on a 12-block area.
565 words, about 3 min5Confined-Space Entry to Clear a Manhole Obstruction
A crew is dispatched to clear an obstruction in a 48-inch-diameter, 18-foot-deep combined sewer manhole. The blockage is visible from the surface with a light: a mat of debris and rags is lodged at the bench.
577 words, about 3 min