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S-50 Oak Ridge Thermal Diffusion Plant

On This Page

Special Exposure Cohort
Technical Documents
Public Comments
Document Archive

(Site Profile/Docket Number 098)

Location: Oak Ridge, Tennessee

Special Exposure Cohort Petition Information

The Special Exposure Cohort (SEC) is a unique category of employees established by The Act (42 CFR Part 83). Claims compensated under the SEC do not have to go through the dose reconstruction process. To qualify for compensation under the SEC, a covered employee must meet specific requirements (e.g., must have at least one of 22 “specified cancers,” and have worked for a specified time period at one of the SEC sites). Classes of employees and work sites can be considered for addition to the SEC through a NIOSH petition process. More information about the Special Exposure Cohort can be found on our Frequently Asked Questions page.

Open/Active SEC Petitions

To date, there are no open/active SEC petitions from S-50 Oak Ridge Thermal Diffusion Plant.

Class(es) Added to the SEC

Employees of the DOE predecessor agencies and their contractors and subcontractors who were monitored or should have been monitored while working at the S-50 Oak Ridge Thermal Diffusion Plant working for a number of work days aggregating at least 250 work day during the period from July 9, 1944, through December 31, 1951, or in combination with work days within the parameters established for one or more other classes of employees in the SEC.

Note: This class was established from Petition 60

Petitions Qualified for Evaluation

Below is a list of the petitions that qualified for evaluation. Select a petition on the list to view the table for that particular petition.

Petition 60 Information
Steps in Petition Process:	Petition Details:
Date Received	May 30, 2006
Date Qualified for Evaluation	June 1, 2006
Summary of Information in Petition	Job Titles and/or Job Duties: All workers Period of Employment: 1944 through 1951 Note: The information above is what qualified for evaluation. During our evaluation of whether dose reconstructions can adequately be completed for the above job titles and period of employment, information may cause NIOSH to change some the dates or job titles/duties. Therefore, as this petition proceeds through the SEC petition process and if an SEC class is proposed, the proposed class may not exactly match the above information.
Copy of the Petition Received	May 30, 2006 [671 KB (1 page)] (January 1, 1944 through December 31, 1951)
Federal Register Notice Announcing that a S-50 Oak Ridge Thermal Diffusion Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation	June 26, 2006 [43 KB (1 page)] (January 1, 1944 through December 31, 1951)
SEC Petition Evaluation Report	August 7, 2006 [100 KB (15 pages)] (July 9, 1944 through December 31, 1951)
Evaluation Report Sent to the Advisory Board	August 9, 2006 (July 9, 1944 through December 31, 1951)
Petition Discussed by the Advisory Board	The petition was discussed by the Advisory Board on September 21, 2006, during its regular meeting. Note: Agendas and transcripts for Board meetings will be posted on the Advisory Board and Public Meetings page as soon as they become available.
Advisory Board Recommendation on SEC Petition	October 11, 2006 [475 KB (2 pages)] (July 9, 1944 through December 31, 1951)
HHS Letters to Congress Regarding the SEC Petition	November 9, 2006 [518 KB (6 pages)] (July 9, 1944 through December 31, 1951)
HHS Designation/Determination of Additional Members to the SEC	Designation: November 9, 2006 [190 KB (4 pages)] (July 9, 1944 through December 31, 1951) Note: A “designation” means that HHS is recommending a class be added to the SEC. A “determination” means that HHS is recommending a class not be added to the SEC.
Federal Register Notice: Designation/Determination of a Class of Employees for Addition to the Special Exposure Cohort	Designation: December 8, 2006 [645 KB (1 page)] (July 9, 1944 through December 31, 1951) Note: A “designation” will be published if there is a recommendation to add a class to the SEC. A “determination” will be published if there is a recommendation not to add a class to the SEC.
Effective Date for the SEC Class	December 9, 2006 (July 9, 1944 through December 31, 1951) Note: This only applies if the class is added to the SEC.
Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort	December 27, 2006 [43 KB (1 page)] (July 9, 1944 through December 31, 1951) Note: This only applies if the class is added to the SEC.
Letter to DOL Regarding the Addition of a New Class of Employees to the SEC	December 12, 2006 [363 KB (1 page)] (July 9, 1944 through December 31, 1951) Note: This only applies if the class is added to the SEC.

Technical Documents

If the energy employee’s personal radiation information is incomplete, NIOSH will use other sources to estimate the radiation dose. This may involve using technical documents called Site Profiles, Technical Basis Documents, and Technical Information Bulletins.

Site Profile

Summary Site Profile for the S-50 Oak Ridge Thermal Diffusion Plant, Revision 01 [456 KB (15 pages)]
April 15, 2019

Public Comments on S-50 Oak Ridge Thermal Diffusion Plant Documents

How to Submit Comments

Comments on S-50 Oak Ridge Thermal Diffusion Plant Documents can be submitted to the NIOSH Docket Officer electronically by email at nioshdocket@cdc.gov or printed comments can be mailed to:

NIOSH Docket Office
Robert A. Taft Laboratories, MS-C34
1090 Tusculum Avenue
Cincinnati, OH 45226
Please include the Site Profile/Docket Number (098) on all comments.

Comments Received

At this time, no comments have been submitted on S-50 Oak Ridge Thermal Diffusion Plant documents.

Document Archive for S-50 Oak Ridge Thermal Diffusion Plant

Site Profile: Summary Site Profile for the S-50 Oak Ridge Thermal Diffusion Plant
- Approved December 8, 2006 (Rev 00)
  
  About this Document: New document to describe the S-50 Liquid Thermal Diffusion Project to enable the preparation of dose reconstructions