National Institute of Standards and Technology

Building 245 Radiation Physics Laboratory Expansion and Modernization

Built in 1964, the Radiation Physics Building (Building 245) is one of the oldest buildings on the NIST Gaithersburg campus. The building 245 project is a significant facility modernization that expanded the radiation physics research laboratory capacity, renovated and upgraded existing building spaces to comply with current codes, and completely replaced aged mechanical, electrical, plumbing and other infrastructure systems throughout the facility. 

The project included the renovation of the existing building, and also includes 74,000 SF and 14,000 SF additions. The research building is vital to NIST’s mission and priorities in the areas of nuclear medicine, standards for electromagnetic radiation and radioactivity, radiometry measurement and verification, environmental radioactivity, medical imaging and advanced manufacturing.

Size100,000 SF

LocationGaithersburg, Maryland

ServicesMEP Building Engineering

MarketFederal Government, Science & Technology


100% outside air, custom air handling units with high efficiency run-around energy recovery system

New reverse osmosis/deionized water (RODI) system for reagent grade water

New reverse osmosis (RO) system dedicated for space humidification

New thermal utility services to the building

Radioactive drainage waste and storage system

New power, LED lighting, and telecom

2,500kW of generation capacity

Phased renovation to maintain occupancy during construction

Building 245 Radiation Physics Laboratory Expansion and ModernizationNational Institute of Standards and Technology