(a) Whenever a prior investigation or personnel security determination (including clearance for access to information classified under E.O. 12356 of another agency of the Federal Government meets the investigative scope and standards of this part, such investigation or clearance may be accepted for the investigative or clearance purposes of this part, provided that the employment with the Federal agency concerned has been continuous and there has been no break longer than 12 months since completion of the prior investigation, and further provided that inquiry with the agency discloses no reason why the clearance should not be accepted. If it is determined that the prior investigation does not meet the provisions of this paragraph, supplemental investigation shall be requested.
(b) A NACI conducted by OPM shall be accepted and considered equivalent to a DNACI for the purposes of this part.
(c) Department of Defense policy on reciprocal acceptance of clearances with the Nuclear Regulatory Commission and the Department of Energy is set forth in DoD Directive 5210.2.\1\---------------------------------------------------------------------------
\1\ See footnote l to Sec. 154.2(c).---------------------------------------------------------------------------