Clarksville Modification Center
(Site Profile/Docket Number 096)
Location: Clarksville, Tennessee
Also Known As: Clarksville Facility, Fort Campbell, Mason & Hanger - Clarksville Base
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 Clarksville Modification Center.
Class(es) Added to the SEC
All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors who worked at the Clarksville Modification Center, Ft. Campbell, in Clarksville, Tennessee, from August 1, 1949, through December 31, 1967, for a number of work days aggregating at least 250 work days, occurring either solely under this employment, or in combination with work days within the parameters established for one or more other classes of employees included in the Special Exposure Cohort.
Note: This class was established from Petition 202
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 202 (Jan 1, 1949 to Dec 31, 1967)
|Steps in Petition Process:||Petition Details:|
||May 24, 2012
|Date Qualified for Evaluation
||May 31, 2012
|Summary of Information in Petition
Job Titles and/or Job Duties: Workers potentially exposed to radioactive materials while working at the Clarksville Facility
Period of Employment: January 1, 1949 to December 31, 1967
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
||Clarksville Facility Petition [305 KB (2 pages)]
|Federal Register Notice Announcing that a Clarksville Modification Center SEC Petition has met the Minimum Qualifications for Review and Evaluation
||June 12, 2012 [80 KB (1 page)]
|SEC Petition Evaluation Report
||June 1, 2012 [420 KB (36 pages)]
Revised May 31, 2012
|Evaluation Report Sent to the Advisory Board
||June 4, 2012
|Petition Discussed by the Advisory Board
The petition was discussed by the Advisory Board on June 20, 2012, during its regular meeting.
Note: the agenda for this meeting is available on the Advisory Board and Public Meetings page.
|Advisory Board Recommendation on SEC Petition
||July 27, 2012 [299 KB (2 pages)]|
|HHS Letters to Congress Regarding the SEC Petition
||August 23, 2012 [700 KB (11 pages)]|
|HHS Designation of Additional Members to the SEC||Designation|
|Federal Register Notice: Designation/Determination Regarding a Class of Employees for Addition to the Special Exposure Cohort
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
||September 22, 2012
|Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort
||October 3, 2012 [81 KB (1 page)]
|Letter to DOL Regarding the Addition of a New Class of Employees to the SEC
||September 28, 2012 [40 KB (1 page)]
Note: this only applies if the class is added to the SEC.
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 for Clarksville Modification Center with Supplementary Guidance for the Medina Modification Center [2.1 MB (51 pages)]
Revised January 4, 2017
The Clarksville Modification Center discussion papers listed below are working documents prepared by NIOSH or its contractor for use in discussions with the Advisory Board on Radiation and Worker Health or its Working Groups or Subcommittees. Draft, preliminary, interim, and white paper documents are not final NIOSH or Advisory Board (or their technical support and review contractors) positions unless specifically marked as such. These documents represent preliminary positions taken on technical issues prepared by NIOSH or its contractor.
The discussion papers have been reviewed to identify and redact any information that is protected by the Privacy Act 5 USC §552a and have been cleared for distribution.
- Draft: Review of the Site Profile for the Clarksville and Medina Plants [157 KB (32 pages)]
Contract No. 200-Clarksville Facility
SCA-TR-SP2012-0007, Rev. 0
February 22, 2012
NIOSH is committed to applying the best available science in dose reconstructions. In keeping with this commitment, completed cases with probabilities of causation less than 50% are reviewed as relevant new information becomes available. The results of these reviews are described in a Program Evaluation Report (PER). The PER details the effect, if any, of the new information on the completed dose reconstruction. If it appears that the new information may result in an increase in dose for a completed dose reconstruction with a probability of causation of less than 50%, NIOSH is committed to working with the Department of Labor to reopen and rework the dose reconstruction, as appropriate. A Program Evaluation Plan (PEP) describes plans for evaluating specific program details or issues.
About this Document: New document to determine which previously completed claims require evaluation for the effect of issuing a revision to the Clarksville TBD.
Summary: Prior to November 4, 2006, there were 65 Clarksville and Medina claims completed which had a probability of causation below 50%. NIOSH will review these dose reconstructions to determine if the dose assigned in consistent or higher than the issued TBD. NIOSH will provide DOL with the list of 65 claims as well as a determination on each claim as to whether a new Dose Estimate is required. Documentation for each claim not requiring a new dose reconstruction will provide the basis for that determination.
How to Submit Comments
Comments on Clarksville Modification Center Documents can be submitted to the NIOSH Docket Officer electronically by email at firstname.lastname@example.org 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 (096) on all comments.
At this time, no comments have been submitted.
- Page last reviewed: September 28, 2015
- Page last updated: January 17, 2017
- Content source:
- National Institute for Occupational Safety and Health Division of Compensation Analysis and Support