S-50 Oak Ridge Thermal Diffusion Plant

(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.

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

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