NIGP 28730: Detectors (Electron, Photon) and Detector Arrays

NIGP 28730 Detectors (Electron, Photon) And Detector Arrays is an Item code covering specialized radiation and photon detection equipment, including gamma detectors, coaxial germanium detectors, and related sensor components used primarily for environmental monitoring, radiochemical compliance testing, and scientific instrumentation. State and local governments procuring under this code include school districts, health and human services departments, law enforcement agencies, and multi-jurisdictional cooperative purchasing vehicles. Work being solicited ranges from one-off detector replacements to equipment parts and repair services bundled into broader electronic equipment procurement frameworks. The Texas Health and Human Services Commission's June 2026 solicitation for Standard P-type coaxial high purity germanium gamma detectors exemplifies the specificity common in this code: a targeted IFB for eight Mirion Technologies detector components (including GC4018 coaxial detector, cryostat assembly, intelligent preamp, and related parts) to replace aging radiochemical drinking water monitoring equipment at Texas nuclear facilities and the Pantex site, with historical spend between $45,050 and $80,000 in fiscal year 2025.

Recent activity concentrates in Texas and Washington, driven by state health and human services departments and school district maintenance cycles. Northside Independent School District in San Antonio issued IFB 2026118 in September 2026 for electronic equipment parts, repairs, rentals, and services with a September 24 response deadline, requiring all current vendors to rebid under a replacement contract. Sourcewell, acting as the contracting vehicle for multiple Washington counties (Franklin, Grant, Grays Harbor, Chelan, and Yakima) and other jurisdictions across the United States and Canada, released RFP 061626 in May 2026 for law enforcement equipment with a June 16, 2026 deadline, establishing a cooperative purchasing framework accessible to thousands of governmental agencies and public entities. The Nevada Department of Human Services pursued a separate battery backup system procurement (40DHHSS3859) in April 2026, though detector-specific solicitation activity remains limited to the Texas DSHS opportunity.