To apply the provisions of OSHA to certain Department of Energy nuclear facilities.

Amends the Occupational Safety and Health Act of 1970 (OSHA) to apply it to certain Department of Energy nuclear facilities (including specified defense, production, utilization, and waste storage or disposal facilities).

Directs the Secretary of Labor to promulgate specific regulations and standards to govern the application of OSHA to such facilities.

Requires the National Institute for Occupational Safety and Health (NIOSH) and its Director to: (1) perform functions authorized by OSHA at such facilities; and (2) conduct hazard evaluations, including ionizing radiation evaluations, at such facilities.

Requires the Secretary of Energy and each contractor operating such a facility to: (1) cooperate with the Secretary of Labor and the Secretary of Health and Human Services in the conduct of an inspection or investigation under OSHA at such facility; (2) grant access to enable the conduct of such inspection or investigation; and (3) provide all information necessary for such inspection or investigation. Authorizes the Secretary of Energy, to protect the confidentiality of information, to deny access to any person who has not been granted a security clearance or access authorization or does not require access in connection with duties to enforce OSHA.