Get Full Government Meeting Transcripts, Videos, & Alerts Forever!
Get email alerts on the Wastewater Emergency topic
No spam. Unsubscribe anytime.
Council approves up to $608,000 to stabilize Hamby wastewater plant after blower and VFD failures
Summary
City approves an emergency contract not to exceed $608,000 for rental blowers, design work and contingencies after repeated blower and variable-frequency drive failures at the Hamby wastewater plant; staff says root cause involves harmonics and aging equipment.
Abilene's City Council unanimously approved an emergency contract Feb. 12 to address repeated blower and VFD failures at the Hamby wastewater treatment plant. Matthew Dane, director of water utilities, told council the failures began in June and were tied both to VFD and blower motor damage; staff deployed rental blowers and retained consultants to diagnose the issue.
Dane said the city has been operating with rental blowers and one original unit for months and that a detailed electrical analysis identified harmonic effects that likely increased stress and heat on the components. "We discovered it's not just the VFDs — the blower motors themselves burned out," Dane said, explaining the city will pursue a design and then competitively bid permanent replacements.
The emergency contract covers rental blowers (including a rent-to-own option), engineering design, monitoring and an allowance for future rental through a six-month horizon; staff described the $608,000 figure as a not-to-exceed total to maintain safe operations while moving toward competitive procurement of standard-spec equipment.
Councilors asked about long-term parts availability and whether standardizing equipment would ease future maintenance; Dane said the new design will use more industry-standard specifications to improve vendor support and parts sourcing.
The council approved the emergency spending by voice vote. Staff said construction documents could be ready in February or March for public bidding of permanent replacements.
