City of Ann Arbor - File #: 22-0826

• File #: 22-0826
• Version: 2
• Name: 6/6/22 Purchase Order for Ozone Generator Components
• Type: Resolution
• Status: Passed
• File created: 6/6/2022
• In control: City Council
• On agenda: 6/6/2022
• Final action: 6/6/2022
• Enactment date: 6/6/2022
• Enactment #: R-22-173
• Title: Resolution to Award a Sole Source Purchase Order to SUEZ Treatment Solutions, Inc. ($781,900.00, total purchase $853,900.00)

Date	Ver.	Action By	Action	Result
6/6/2022	2	City Council	Approved	Pass

Title
Resolution to Award a Sole Source Purchase Order to SUEZ Treatment Solutions, Inc. ($781,900.00, total purchase $853,900.00)
Memorandum
This memorandum and resolution requests approval to award a sole source purchase order to SUEZ Treatment Solutions, Inc. (SUEZ) for furnishing of power supply units (PSUs), ozone generator dielectrics and vessel internals for two (2) ozone generator trains required to provide primary disinfection at the Water Treatment Plant ($781,900.00, total purchase $853,900.00).

The Water Treatment Plant (WTP) provides reliable high-quality drinking water to over 125,000 customers. In 1996, the WTP completed a major improvements project that added ozone disinfection to be used as the WTP's primary disinfection step. Ozone is generated on-site via four (4) ozone generation equipment trains, each train consisting of power supply units, generator vessel and internals, as well as various ancillary components. The ozone generation equipment is original from the 1996 installation and components of the system are nearing the end of its service life. Despite multiple repair attempts, one of the four ozone train power supply units (PSU) has failed and cannot be repaired. Ensuring all four (4) ozone trains are available for operation is critical to maintain rated treatment capacity as regulated by EGLE. While attempting to repair the failed PSU, it was discovered that the original equipment manufacturer (OEM) no longer supports this model due to the age, no longer manufacturers spare parts and no longer supports the programming needed to operate the system.

SUEZ acquired the original supplier of the ozone disinfection system and maintains engineering and production of materials and equipment compatible with the City's original equipment. SUEZ has visited the site, evaluated the equipment and provided recommendations. SUEZ confirmed they can provide newer replacement models of ozone generation vessel internals, PSUs, as well as new programmin...