Nuclear Investigations Improvement Act of 1989

Nuclear Investigations Improvement Act of 1989 - Amends the Energy Reorganization Act of 1974 to establish within the Nuclear Regulatory Commission the Office of Investigations, to be headed by a Director of Investigations appointed by the Commission.

Confers responsibility upon the Office to investigate violations within the Commission's jurisdiction when information indicates that the violations either were willfully caused or were the result of careless disregard for regulatory requirements. Requires the Director to report violations of Federal criminal law to the Commission and the Justice Department. Requires Commission employees to report to the Office information indicating that violations either were willfully caused or were the result of careless disregard for regulatory requirements.