48 C.F.R. § 2009.100
(a) It is NRC policy that only competitively awarded contracts shall be placed with an individual who was employed by the NRC within two years from the date of the Request for Procurement Action. This policy also applies to:
(b) The following procurement actions are considered noncompetitive for the purposes of this policy:
(c) The term NRC employee includes special Government employees performing services for NRC as experts, advisors, consultants, or members of advisory committees, if—