UNSPSC 32151803: Safety isolation system

UNSPSC 32151803 Safety isolation system is a Commodity code that in recent state and local procurement refers primarily to supervisory control and data acquisition (SCADA) system modernization and programmable logic controller (PLC) replacement projects at municipal water and wastewater treatment plants. State and local water utilities are the primary issuing bodies soliciting under this code, typically through competitive RFPs seeking end-to-end system integration, equipment replacement, network upgrades, Factory Acceptance Testing, operator training, and comprehensive documentation. The work encompasses conversion of legacy control architectures (such as GE iFix and ControlNet) to modern platforms (Schneider Electric AVEVA, Allen-Bradley ControlLogix, Ethernet/IP), installation of new operator interface terminals and control panels, and vendor services delivered over 360-day project cycles. Qualified contractors must demonstrate five or more years of comparable experience, three or more completed water or wastewater treatment facility SCADA upgrades within five years, and personnel with specialized ControlLogix PLC programming and AVEVA or equivalent platform experience.

Recent activity concentrates in Georgia and Florida. The City of Atlanta Department of Watershed Management posted two concurrent pre-advertisement notices on May 8, 2026—one for SCADA improvements at the Hemphill Water Treatment Plant (response due May 29, 2026) and a second for the Chattahoochee Water Treatment Plant (response due May 29, 2026)—both soliciting comprehensive system modernization with 360-day timelines, Factory Acceptance Testing, and five consecutive days of operational site testing. The City of Santa Fe, New Mexico, on behalf of the Buckman Direct Diversion, issued RFP FY26-RFP-036 on February 9, 2026, seeking PLC replacement and SCADA modifications using Schneider Electric Unity Pro XL software with proposals evaluated on best-value criteria (35% scope and expertise, 10% value-add, 30% cost, 25% interview). Valencia College District in Florida and the Eastern Municipal Water District in Riverside County, California, posted opportunities for related control-system and variable frequency drive procurements in the same timeframe, though these sit at adjacent commodity boundaries rather than squarely within the safety isolation system code.