SECTION 1. CERTAIN CENTRIFUGE MEDIUM FREQUENCY DRIVE SUPPLY.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Centrifuge medium   Free         No change        No change        On or before 12/  ''.
                         frequency drive                                                    31/2009
                         supply, including
                         medium frequency
                         centrifuge drive
                         converters,
                         distribution and
                         protection
                         systems (isotopic
                         separation
                         equipment), for
                         the construction
                         of an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

''.SEC. 2. CERTAIN CENTRIFUGE SUPPLY AND SUPPORT SYSTEMS.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Centrifuge supply   Free         No change        No change        On or before 12/  ''.
                         and support                                                        31/2009
                         systems,
                         including
                         centrifuge
                         monitoring
                         system,
                         proprietary
                         centrifuge
                         protection system
                         (isotopic
                         separation
                         equipment), for
                         the construction
                         of an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

''.SEC. 3. CERTAIN CENTRIFUGE PLANT CONTROL SYSTEM.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Centrifuge plant    Free         No change        No change        On or before 12/  ''.
                         control system,                                                    31/2009
                         including
                         proprietary
                         software and
                         hardware
                         integration for
                         core plant
                         control systems
                         (isotopic
                         separation
                         equipment), for
                         the construction
                         of an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

''.SEC. 4. CERTAIN CASCADE HEADER PIPE-WORK MODULES.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Cascade header      Free         No change        No change        On or before 12/  ''.
                         pipe-work modules                                                  31/2009
                         (CHP), including
                         approximately
                         2,000 modules
                         specially
                         designed to allow
                         the correct
                         distribution of
                         the process gas
                         into the cascade
                         and made of a
                         special grade
                         aluminum, for the
                         construction of
                         an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

''.SEC. 5. CERTAIN CASCADE VALVE FRAMES.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Cascade valve       Free         No change        No change        On or before 12/  ''.
                         frames, including                                                  31/2009
                         approximately 50
                         manifold units to
                         be the interface
                         from the main
                         process plant to
                         the cascade and
                         specially
                         designed to
                         enable optimum
                         operation of the
                         cascades, for the
                         construction of
                         an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

''.SEC. 6. CERTAIN CENTRIFUGE PROCESS GAS EQUIPMENT.

    Subchapter II of chapter 99 is amended by inserting in numerical 
sequence the following new heading:


``      9902.xx.xx      Centrifuge process  Free         No change        No change        On or before 12/  ''.
                         gas equipment                                                      31/2009
                         (isotopic
                         separation
                         equipment)
                         consisting of
                         centrifuge
                         process gas
                         aluminum pipe
                         work of special
                         grade aluminum
                         tubing,
                         centrifuge
                         process gas
                         valves, specially
                         designed for
                         optimum flow
                         control of
                         process gas, and
                         centrifuge
                         process gas
                         delivery pump
                         sets, for the
                         construction of
                         an isotopic
                         separation
                         facility in
                         southern New
                         Mexico (provided
                         for in subheading
                         8401.20.00)......

                                ''.
Amends the Harmonized Tariff Schedule of the United States to suspend temporarily the duty on certain structures, parts, and components for use in an isotopic separation facility.
To suspend temporarily the duty on certain structures, parts, and components for use in an isotopic separation facility.