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  		UNITED STATES<BR>
  	SECURITIES AND EXCHANGE COMMISSION
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  	WASHINGTON, D.C. 20549
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  	FORM 8-K
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  	CURRENT REPORT
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  	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
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  	Date of Report (Date of Earliest Event Reported):
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  	&nbsp;
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  	September 21, 2007
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  	USEC Inc.
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  <BR>__________________________________________<BR>
  	(Exact name of registrant as specified in its charter)
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  	Delaware
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  	1-14287
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  	52-2107911
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  _____________________<BR>
  	(State or other jurisdiction
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  _____________<BR>
  	(Commission
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  ______________<BR>
  	(I.R.S. Employer
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  	of incorporation)
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  	File Number)
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  	Identification No.)
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  	&nbsp;&nbsp;
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  	&nbsp;
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  	2 Democracy Center, 6903 Rockledge Drive, Bethesda, Maryland
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  	&nbsp;
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  	20817
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  _________________________________<BR>
  	(Address of principal executive offices)
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  	&nbsp;
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  ___________<BR>
  	(Zip Code)
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  	Registrant&#146;s telephone number, including area code:
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  	&nbsp;
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  	(301) 564-3200
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  	Not Applicable
  <BR>______________________________________________<BR>
  	Former name or former address, if changed since last report
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  <FONT SIZE="2">
  	&nbsp;
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  <!-- CoverPageRegistrant END --><P><FONT SIZE="2">
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:</FONT>
  </P>
  <P><FONT SIZE="2">
  [&nbsp;&nbsp;]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
  [&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
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  <B>
  	Item 1.01 Entry into a Material Definitive Agreement.
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  USEC Inc. ("USEC" or the "Company") and United States Enrichment Corporation, a direct subsidiary of the Company, entered into an amendment (the "Amendment"), dated as of September 21, 2007, to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, by and among the Company, United States Enrichment Corporation, the lenders parties thereto, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein as "agents," (the "Credit Agreement").  The Amendment specifically permits the issuance of the senior convertible notes (the "Convertible Notes") expected to be issued by the Company pursuant to an indenture to be entered into between the Company and Wells Fargo Bank, N.A., as trustee, and any conversion of the Convertible Notes into the Company&#x2019;s common stock.  The Amendment also facilitates the payment of cash in respect of any fractional shares remaining after any conversion of the Convertible Notes.  In addition, to the extent not already contemplated by the Credit Agreement, the Amendment provides that the occurrence of a fundamental change under the indenture will result in an event of default under the Credit Agreement, subject to the expiration of any applicable grace or cure periods set forth in the indenture.  The foregoing summary of the Amendment is qualified in its entirety by reference to the full text of the amendment, which is filed as Exhibit 10.1 to this report.
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  	Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
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  On September 21, 2007, the Company amended its certificate of incorporation by filing with the Department of State of the State of Delaware a Certificate of Increase (the "Certificate of Increase") to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock relating to the Company&#x2019;s authorized class of Series A Junior Participating Preferred Stock (the "Series A Shares").  The Certificate of Increase, which was authorized by the Company&#x2019;s Board of Directors pursuant to Article Fourth of the Company&#x2019;s certificate of incorporation and Section 151(g) of the Delaware General Corporation Law, increased the number of authorized Series A Shares from 100,000 shares to 200,000 shares. The increase in the number of authorized Series A Shares was necessary in order to ensure that, in the event such Series A Shares were ever issued in connection with the common stock rights under the Company&#x2019;s Rights Agreement adopted on April 24, 2001, that a sufficient number of Series A Shares would be available for satisfaction upon issuance of such rights.  The Certificate of Increase was effective as of September 21, 2007.  A copy of the Certificate of Increase is filed as Exhibit 3.1 to this report.
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  	Item 9.01 Financial Statements and Exhibits.
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  (d)	Exhibits<br><br>Exhibit Number--Description<br><br>3.1--Certificate of Increase to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock.<br><br>10.1--Third Amendment dated September 21, 2007 to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, among USEC Inc., United States Enrichment Corporation, the lenders named therein, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein.<br>
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  	SIGNATURES
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  	Pursuant to the requirements of the Securities Exchange Act of 1934, the
  	registrant has duly caused this report to be signed on its behalf by the
  	undersigned hereunto duly authorized.
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  	USEC Inc.
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  	&nbsp;&nbsp;
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  <I>
  	September 25, 2007
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  	&nbsp;
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  	By:
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  <I>
  	/s/ John C. Barpoulis
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  	&nbsp;
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  <I>
  	Name: John C. Barpoulis
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  	&nbsp;
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  <I>
  	Title: Senior Vice President and Chief Financial Officer (Principal Financial Officer)
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  	Exhibit&nbsp;Index
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  	Exhibit No.
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  	&nbsp;
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  	Description
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  	3.1
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  	&nbsp;
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  Certificate of Increase to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock.
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  	10.1
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  	&nbsp;
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  Third Amendment dated September 21, 2007 to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, among USEC Inc., United States Enrichment Corporation, the lenders named therein, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein.
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metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "htm_22838.htm", "description": "LIVE FILING", "secsgml_size_bytes": 13885}]
metadata_filer: {"company-data": {"conformed-name": "USEC INC", "cik": "0001065059", "assigned-sic": "1400", "irs-number": "522107911", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-14287", "film-number": "071133341"}, "business-address": {"street1": "2 DEMOCRACY CENTER", "street2": "6903 ROCKLEDGE DRIVE", "city": "BETHESDA", "state": "MD", "zip": "20817", "phone": "3015643200"}, "mail-address": {"street1": "2 DEMOCRACY CENTER", "street2": "6903 ROCKLEDGE DRIVE", "city": "BETHESDA", "state": "MD", "zip": "20817"}}
text: USEC Inc. (Form: 8-K)
  UNITED STATES
  SECURITIES AND EXCHANGE COMMISSION
  WASHINGTON, D.C. 20549
  FORM 8-K
  CURRENT REPORT
  Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
  Date of Report (Date of Earliest Event Reported):
  September 21, 2007
  USEC Inc.
  __________________________________________
  (Exact name of registrant as specified in its charter)
  Delaware
  1-14287
  52-2107911
  _____________________
  (State or other jurisdiction
  _____________
  (Commission
  ______________
  (I.R.S. Employer
  of incorporation)
  File Number)
  Identification No.)
  2 Democracy Center, 6903 Rockledge Drive, Bethesda, Maryland
  20817
  _________________________________
  (Address of principal executive offices)
  ___________
  (Zip Code)
  Registrant's telephone number, including area code:
  (301) 564-3200
  Not Applicable
  ______________________________________________
  Former name or former address, if changed since last report
  Check the appropriate box below if the Form 8-K filing is intended to
  simultaneously satisfy the filing obligation of the registrant under any
  of the following provisions:
  [  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
  [  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
  [  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
  [  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
  Top of the Form
  Item 1.01 Entry into a Material Definitive Agreement.
  USEC Inc. ("USEC" or the "Company") and United States Enrichment Corporation, a direct subsidiary of the Company, entered into an amendment (the "Amendment"), dated as of September 21, 2007, to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, by and among the Company, United States Enrichment Corporation, the lenders parties thereto, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein as "agents," (the "Credit Agreement").  The Amendment specifically permits the issuance of the senior convertible notes (the "Convertible Notes") expected to be issued by the Company pursuant to an indenture to be entered into between the Company and Wells Fargo Bank, N.A., as trustee, and any conversion of the Convertible Notes into the Company's common stock.  The Amendment also facilitates the payment of cash in respect of any fractional shares remaining after any conversion of the Convertible Notes.  In addition, to the extent not already contemplated by the Credit Agreement, the Amendment provides that the occurrence of a fundamental change under the indenture will result in an event of default under the Credit Agreement, subject to the expiration of any applicable grace or cure periods set forth in the indenture.  The foregoing summary of the Amendment is qualified in its entirety by reference to the full text of the amendment, which is filed as Exhibit 10.1 to this report.
  Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
  On September 21, 2007, the Company amended its certificate of incorporation by filing with the Department of State of the State of Delaware a Certificate of Increase (the "Certificate of Increase") to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock relating to the Company's authorized class of Series A Junior Participating Preferred Stock (the "Series A Shares").  The Certificate of Increase, which was authorized by the Company's Board of Directors pursuant to Article Fourth of the Company's certificate of incorporation and Section 151(g) of the Delaware General Corporation Law, increased the number of authorized Series A Shares from 100,000 shares to 200,000 shares. The increase in the number of authorized Series A Shares was necessary in order to ensure that, in the event such Series A Shares were ever issued in connection with the common stock rights under the Company's Rights Agreement adopted on April 24, 2001, that a sufficient number of Series A Shares would be available for satisfaction upon issuance of such rights.  The Certificate of Increase was effective as of September 21, 2007.  A copy of the Certificate of Increase is filed as Exhibit 3.1 to this report.
  Item 9.01 Financial Statements and Exhibits.
  (d)	Exhibits
  Exhibit Number--Description
  3.1--Certificate of Increase to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock.
  10.1--Third Amendment dated September 21, 2007 to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, among USEC Inc., United States Enrichment Corporation, the lenders named therein, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein.
  Top of the Form
  SIGNATURES
  Pursuant to the requirements of the Securities Exchange Act of 1934, the
  	registrant has duly caused this report to be signed on its behalf by the
  	undersigned hereunto duly authorized.
  USEC Inc.
  September 25, 2007
  By:
  /s/ John C. Barpoulis
  Name: John C. Barpoulis
  Title: Senior Vice President and Chief Financial Officer (Principal Financial Officer)
  Top of the Form
  Exhibit Index
  Exhibit No.
  Description
  3.1
  Certificate of Increase to the Certificate of Designation, Preferences and Rights of Series A Junior Participating Preferred Stock.
  10.1
  Third Amendment dated September 21, 2007 to the Amended and Restated Revolving Credit Agreement, dated as of August 18, 2005, among USEC Inc., United States Enrichment Corporation, the lenders named therein, JPMorgan Chase Bank, N.A., as administrative and collateral agent, and the other financial institutions named therein.