The National Nuclear Security Administration (NNSA) this week split its two headquarters-based procurement offices into three, the head of the agency said.

Effective Monday, the agency’s Washington-based procurement bureaucracy comprises: the Office of Partnership Services; the Office of Infrastructure; and the Office of Environment, Safety, and Health.

Peter Rodrik is the acting associate administrator for partnership and acquisition services, or NA-PAS. Ken Sheely is the acting associate administrator for infrastructure, or NA-90. Dan Sigg is the acting associate administrator for environment, safety and health, or NA-ESH.

The changes, widely announced internally in May, “have been fully communicated within the Department and to the Hill,” Jill Hruby, administrator of the NNSA, wrote Monday in an email to all hands.

“I appreciate Pete Rodrik, Ken Sheely, BJ Quigley, Dan Sigg, Ahmad Al-Daouk, and Keith Hamilton agreeing to serve as interim leaders of these new organizations as we conduct a full and open search for these leadership positions,” Hruby wrote in the email. “I appreciate all the effort that went into helping us create organizations that are respectful of our employees and will help us continue to improve our ability to deliver our mission effectively.”

Among other things, the reorganization creates a single, Washington-based overseer for the management and operations contractors that under long-term contracts keep watch on the NNSA’s nationwide network of nuclear weapon design laboratories, production and test sites, Hruby said in May when she rolled out the changes to the agency.

The three new offices replace the old Office of Acquisition and Project Management, led until June by Robert Raines, who retired, and the Office of Infrastructure and Operations.