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Y-12 Plant

(Site Profile/Docket Number 021)

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.

SEC Petitions Not Qualifying for Evaluation

In addition to the petitions listed below, four petitions were received but did not qualify for evaluation. Three petitions did not meet the minimum petition requirements and the class defined in the other petition was already included in the SEC.

Classes Not Added to the SEC

  • Y-12 Plant (Statisticians)--The Secretary of HHS determined that the following employees do not meet the statutory criteria for addition to the SEC as authorized under EEOICPA: Statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by the Department of Energy or its contractors between January 1, 1958, and June 30, 1958.

Classes Added to the SEC

  • Y-12 Plant (March 1943 through December 1947)--Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947 and who were employed for a number of work days aggregating at least 250 work days, either solely under this employment or in combination with work days of employment occurring within the parameters (excluding aggregate work day requirements) established for other classes of employees included in the SEC
  • Y-12 Plant (January 1948 through December 1957)--Department of Energy (DOE) employees or DOE contractor or subcontractor employees who were monitored or should have been monitored for: (1) Thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 for a number of work days aggregating at least 250 work days from January 1948 through December 1957 or in combination with work days within the parameters (excluding aggregate work day requirements) established for one or more classes of employees in the SEC; or (2) Radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 for a number of work days aggregating at least 250 work days from January 1948 through December 1957 or in combination with work days within the parameters (excluding aggregate work day requirements) established for one or more classes of employees in the SEC.
  • Y-12 Plant (March 1, 1943 through December 31, 1947)--All employees of the Department of Energy (DOE), its predecessor agencies, and DOE contractors or subcontractors who worked at the Y-12 Plant in Oak Ridge, Tennessee from March 1, 1943 through December 31, 1947, 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 in the Special Exposure Cohort.
  • Y-12 Plant (January 1, 1948 through December 31, 1957)--All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors who worked at the Y–12 facility in Oak Ridge, Tennessee, during the period from January 1, 1948 through December 31, 1957, 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 in the Special Exposure Cohort.

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.

Petitions

Petition 18Jan 1, 1944 to Dec 31, 1945

Petition 18
Steps in Petition Process: Petition Details:
Date Received

November 24, 2004

Date Qualified for Evaluation

February 3, 2005

Summary of Information in Petition

Locations: Oak Ridge, Tennessee--Building 9201-5 and the Beta Building at Y-12

Job Titles and/or Job Duties: All Control Operators

Period of Employment: January 1944 through December 1945

Copy of the Petition Received

Control Operators; January 1944 through December 1945 [445 KB (8 pages)]
November 24, 2004

Federal Register Notice Announcing that the Y-12 Plant SEC Petitions met the Minimum Qualifications for Review and Evaluation

Control Operators; January 1944 through December 1945 [47 KB (1 page)]
April 7, 2005

SEC Petition Evaluation Report

All DOE, DOE contractors, or subcontractors, or AWE employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee; January 1943 through December 1947 [405 KB (25 pages)]
June 13, 2005

(Note: The evaluation was expanded to cover the entire "calutron" period of uranium enrichment operations at the Y-12 facility. In addition, the class start date was changed based on the completion of the Pilot Plant building shell in March 1943.)

Evaluation Report Sent to the Advisory Board

August 2, 2011

Petition Discussed by the Advisory Board

All DOE, DOE contractors, or subcontractors, or AWE employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee; January 1943

The Advisory Board discussed the Y-12 Plant Petition (March 1943 to December 1947) on July 5, 2005.

Advisory Board Recommendation on SEC Petition

All DOE, DOE contractors, or subcontractors, or AWE employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee; January 1943 through December 1947 [48 KB (2 pages)]
July 26, 2005

HHS Letters to Congress Regarding the SEC Petition

All DOE, DOE contractors, or subcontractors employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee; January 1943 through December 1947 [399 KB (11 pages)]
August 25, 2005

HHS Designation of Additional Members to the SEC

HHS Designation of Additional Members from the Y-12 Plant: Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947 [406 KB (4 pages)]
August 25, 2005

Federal Register Notice: Designation/Determination Regarding a Class of Employees for Addition to the Special Exposure Cohort

Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947 [41 KB (1 page)]
September 27, 2005

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 24, 2005: Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947 [41 KB (1 page)]
October 3, 2005

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Y-12 Plant March 1943 to December 1947 [20 KB (1 page)]
October 3, 2005

Letter from DOL Regarding the Return of All Cases for the New SEC Class

Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in uranium enrichment operations or other radiological activities at the Y-12 facility in Oak Ridge, Tennessee from March 1943 through December 1947 [524 KB (4 pages)]
October 3, 2005

Petition 26Jan 1, 1943 to Dec 31, 1947

Petition 26
Steps in Petition Process: Petition Details:
Date Received

October 23, 2006

Date Qualified for Evaluation

January 30, 2007

Summary of Information in Petition

Location: Oak Ridge, Tennessee

Job Titles and/or Job Duties: All Tennessee Eastman Corporation employees that conducted laboratory equipment cleaning work

Period of Employment: From 1943 through 1947

Copy of the Petition Received

Tennessee Eastman Corporation employees that conducted laboratory equipment cleaning work; 1943 through 1947 [2.1 MB (33 pages)]
February 8, 2005

Federal Register Notice Announcing that a Y-12 Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation

Tennessee Eastman Corporation employees that conducted laboratory equipment cleaning work; 1943-1947 [52 KB (2 pages)]
June 6, 2005

SEC Petition Evaluation Report

Tennessee Eastman Corporation employees that conducted laboratory equipment cleaning work; 1943 through 1947

Note: Merged with Petition 1.

Evaluation Report Sent to the Advisory Board

Not applicable. Merged with Petition 1

Petition Discussed by the Advisory Board

Not applicable. Merged with Petition 1

Advisory Board Recommendation on SEC Petition

Not applicable. Merged with Petition 1

HHS Letters to Congress Regarding the SEC Petition

Not applicable. Merged with Petition 1

HHS Designation of Additional Members to the SEC

Not applicable. Merged with Petition 1

Federal Register Notice: Designation Regarding a Class of Employees for Addition to the Special Exposure Cohort

Not applicable. Merged with Petition 1

Effective Date for the SEC Class

Not applicable. Merged with Petition 1

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

Not applicable. Merged with Petition 1

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Not applicable. Merged with Petition 1

Petition 28Oct 1944 to Dec 1957

Petition 28
Steps in Petition Process: Petition Details:
Date Received

February 15, 2005

Date Qualified for Evaluation

June 13, 2005

Summary of Information in Petition

Job Titles and/or Job Duties: All steamfitters, pipefitters, and plumbers

Period of Employment: October 1944 through December 1957

Copy of the Petition Received

Steamfitters, Pipefitters, and Plumbers; October 1944 through December 1957 [1.8 MB (31 pages)]
February 15, 2005

Federal Register Notice Announcing that a Y-12 Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation

Steamfitters, Pipefitters, and Plumbers; October, 1944 through December, 1957 [42 KB (2 pages)]
June 6, 2005

SEC Petition Evaluation Report

Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for thorium exposures while working in Building 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12; January 1948 through December 1957 [960 KB (46 pages)]
April 7, 2006

Supplement to Y-12 SEC Petition (October 1944 through December 1957) [70 KB (5 pages)]
June 8, 2006

Note: Based on its research, NIOSH reduced the requested class because the feasibility of performing dose reconstruction for all workers employed from March 1943 through December 1947 was already addressed in the SEC Petition Evaluation Report 1 listed above.

Evaluation Report Sent to the Advisory Board

June 13, 2005

Petition Discussed by the Advisory Board

The Advisory Board discussed the Y-12 Plant Petition (1948-1957) on April 26, 2006 and June 15, 2006.

Note: the agenda for this meeting is available on the Advisory Board and Public Meetings page.

Advisory Board Recommendation on SEC Petition

Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for thorium exposures while working in Building 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12; January 1948 through December 1957; or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 from January 1948 through December 1957 [268 KB (2 pages)]
July 5, 2006

HHS Letters to Congress Regarding the SEC Petition

Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for (1) thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 (January 1948 through December 1957); or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 (January 1948 through December 1957) [282 KB (6 pages)]
August 8, 2006

HHS Designation of Additional Members to the SEC

HHS Designation of a Class of Employees from Y-12 Plant: Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for (1) thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 (January 1948 through December 1957); or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 (January 1948 through December 1957) [181 KB (4 pages)]
August 8, 2006

Federal Register Notice: Designation Regarding a Class of Employees for Addition to the Special Exposure Cohort

Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for (1) thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 (January 1948 through December 1957); or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 (January 1948 through December 1957) [42 KB (1 page)]
September 7, 2006

Effective Date for the SEC Class

September 7, 2006: HHS Designation of a Class of Employees from Y-12 Plant: Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for (1) thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 (January 1948 through December 1957; or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 (January 1948 through December 1957))

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

Employees of the DOE or DOE contractors or subcontractors who were monitored or should have been monitored for (1) thorium exposures while working in Building 9201-3, 9202, 9204-1, 9204-3, 9206, or 9212 at Y-12 (January 1948 through December 1957); or radionuclide exposures associated with cyclotron operations in Building 9201-2 at Y-12 (January 1948 through December 1957) [42 KB (1 page)]
September 22, 2006

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Y-12 Plant January 1948 through December 1957 [54 KB (2 pages)]
September 12, 2006

Petition 39Jan 1, 1951 to Jun 30, 1959

Petition 39
Steps in Petition Process: Petition Details:
Date Received

July 28, 2005

Date Qualified for Evaluation

January 11, 2007

Summary of Information in Petition

Location: Oak Ridge, Tennessee

Job Titles and/or Job Duties: All statisticians in all locations

Period of Employment: January 1, 1951 through June 30, 1959

Copy of the Petition Received

Statisticians; January 1, 1951 through June 30, 1959 [935 KB (19 pages)]
July 28, 2005

Federal Register Notice Announcing that a Y-12 Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation

Statisticians; January 1, 1951 through June 30, 1959 [43 KB (1 page)]
February 9, 2007

SEC Petition Evaluation Report

All statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by DOE or its contractors between January 1, 1958 and June 30, 1958 [690 KB (34 pages)]
June 29, 2007

Note: Based on its research, NIOSH reduced the petitioner-requested class to define a single class of employees for which NIOSH can estimate radiation doses with sufficient accuracy. The time period of the class was reduced because of the petition basis that one or more members of the class might have incurred a high level radiation dose from an unmonitored exposure incident in the first or second quarter of 1958)

Evaluation Report Sent to the Advisory Board

July 14, 2011

Petition Discussed by the Advisory Board

All statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by DOE or its contractors between January 1, 1958 and June 30, 1958

The petition was discussed by the Advisory Board on October 4, 2007, during its regular meeting.

Advisory Board Recommendation on SEC Petition

All statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by DOE or its contractors between January 1, 1958 and June 30, 1958 [193 KB (1 page)]
October 26, 2007

HHS Letters to Congress Regarding the SEC Petition

Statisticians who performed statistical analysis of biological experiments in all locations at the Y-12 Plant between January 1, 1958, and June 30, 1958 [376 KB (9 pages)]
December 14, 2007

HHS Determination of Additional Members to the SEC

HHS Determination of a Class of Employees from Y-12 Plant (Statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by the Department of Energy or its contractors between January 1, 1958, and June 30, 1958) [152 KB (4 pages)]
December 14, 2007

Federal Register Notice: Determination Regarding a Class of Employees for Addition to the Special Exposure Cohort

Determination

Federal Register Notice published announcing the determination concerning a petition to add a class of employees to the SEC from the Y-12 Plant (Statisticians who performed statistical analysis of biological experiments (working within the Oak Ridge National Laboratory Biological Sciences Division) in all locations at the Y-12 Plant in Oak Ridge, Tennessee, who were employed by the Department of Energy or its contractors between January 1, 1958, and June 30, 1958) [43 KB (1 page)]
January 23, 2008

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

Not applicable.

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

Not applicable.
(Note: this only applies if the class is added to the SEC. This class was not added to the SEC.)

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Not applicable.
(Note: this only applies if the class is added to the SEC. This class was not added to the SEC.)

Petition 98Mar 1, 1943 to Dec 31, 1947

Petition 98
Steps in Petition Process: Petition Details:
Date Received

September 20, 2007

Date Qualified for Evaluation

September 24, 2007

Summary of Information in Petition

Location: Oak Ridge, Tennessee

Job Titles and/or Job Duties: All workers

Period of Employment: March 1, 1943 through December 31, 1947

Copy of the Petition Received

All workers; March 1, 1943 through December 31, 1947 [564 KB (4 pages)]
September 20, 2007

Federal Register Notice Announcing that a Y-12 Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation

All workers; March 1, 1943 through December 31, 1947 [43 KB (1 page)]
October 3, 2007

SEC Petition Evaluation Report

All workers; March 1, 1943 through December 31, 1947 [308 KB (19 pages)]
June 6, 2008

Evaluation Report Sent to the Advisory Board

June 9, 2008

Petition Discussed by the Advisory Board

All workers; March 1, 1943 through December 31, 1947

The petition was discussed by the Board on June 24, 2008, 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

All employees of the Department of Energy (DOE), its predecessor agencies, and DOE contractors and subcontractors who worked at the Y-12 Plant in Oak Ridge, Tennessee from March 1, 1943 through December 31, 1947 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 other classes of employees in the Special Exposure Cohort [63 KB (2 pages)]
July 12, 2008

HHS Letters to Congress Regarding the SEC Petition

All workers; March 1, 1943 through December 31, 1947 [474 KB (10 pages)]
August 15, 2008

HHS Designation of Additional Members to the SEC

HHS Designation of Additional Members from the Y-12 Plant: All workers (March 1,1943 through December 31, 1947) [265 KB (5 pages)]
August 15, 2008

Federal Register Notice: Designation Regarding a Class of Employees for Addition to the Special Exposure Cohort

All workers; March 1,1943 through December 31, 1947 [43 KB (1 page)]
August 28, 2008

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 14, 2008: All workers (March 1,1943 through December 31, 1947)

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

All workers (March 1,1943 through December 31, 1947) [57 KB (2 pages)]
October 8, 2008

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Y-12 Plant March 1, 1943 through December 31, 1947 [18 KB (1 page)]
September 22, 2008

Petition 186Jan 1, 1948 to Dec 31, 1957

Petition 186
Steps in Petition Process: Petition Details:
Date Received

April 7, 2011

Date Qualified for Evaluation

June 14, 2011

Summary of Information in Petition

Location: Oak Ridge, Tennessee

Job Titles and/or Job Duties: All workers potentially exposed to radioactive materials

Period of Employment: January 1, 1948 through December 31, 1957

Copy of the Petition Received

All workers potentially exposed to radioactive materials; January 1, 1948 through December 31, 1957 [181 KB (3 pages)]
April 22, 2011

Federal Register Notice Announcing that a Y-12 Plant SEC Petition has met the Minimum Qualifications for Review and Evaluation

All workers potentially exposed to radioactive materials; January 1, 1948 through December 31, 1957 [40 KB (1 page)]
May 6, 2011

SEC Petition Evaluation Report

All workers; January 1, 1948 through December 31, 1957 [608 KB (73 pages)]
July 19, 2011

Evaluation Report Sent to the Advisory Board

July 14, 2011

Petition Discussed by the Advisory Board

All workers; January 1, 1948 through December 31, 1957

The petition was discussed by the Advisory Board on August 23, 2011, 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

All employees of the Department of Energy, its predecessor agencies, and their contractors and subcontractors who worked at the Y-12 facility in Oak Ridge, Tennessee, during the period from January 1, 1948 through December 31, 1957, 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 [28 KB (2 pages)]
September 14, 2011

HHS Letters to Congress Regarding the SEC Petition

All workers; January 1, 1948 through December 31, 1957 [76 KB (10 pages)]
October 18, 2011

HHS Designation of Additional Members to the SEC

HHS Designation of Additional Members from the Y-12 Plant: All workers (January 1, 1948 through December 31, 1957) [33 KB (5 pages)]
October 18, 2011

Federal Register Notice: Designation Regarding a Class of Employees for Addition to the Special Exposure Cohort

All workers; January 1, 1948 through December 31, 1957 [39 KB (1 page)]
November 4, 2011

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

November 17, 2011 (January 1, 1948 through December 31, 1957)

Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort

All workers (January 1, 1948 through December 31, 1957) [167 KB (1 page)]
November 28, 2011

Letter to DOL Regarding the Addition of a New Class of Employees to the SEC

Y-12 Plant January 1, 1948 through December 31, 1957 [20 KB (1 page)]
November 17, 2011

Worker Outreach Activities

Based on a recommendation from the Advisory Board to provide workers and site experts with opportunities to participate in developing the technical documents used in dose reconstruction, NIOSH established a Worker Outreach Program.

At Worker Outreach Meetings, current and former DOE and AWE employees have opportunities to obtain information about Site Profiles, Technical Basis Documents, and Technical Information Bulletins, and to provide information for consideration and possible use in dose reconstruction. This process is valuable to ensure that the technical documents used in dose reconstruction contain correct and useful information.

Below are the Worker Outreach Activities for the Y-12 Plant:

Advisory Board and NIOSH Comments and Discussions on the Y-12 Plant

The Y-12 Plant 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.

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

  • Introduction [97 KB (10 pages)]
    Revised October 24, 2006

    Revision Includes: Incorporates Y-12 National Security Complex Special Exposure Cohort class descriptions in a new section. Text was added or modified on pages 5 and 6. Headings and citations were added for the Technical Basis Documents. A Reference section was added with the TBD references. The Acronyms and Abbreviations page was adjusted per usage. No sections were deleted. Constitutes a total rewrite of the document. Incorporates formal internal and NIOSH review comments. This revision results in no change to the assigned dose and no PER is required.

  • Site Description [313 KB (35 pages)]
    Revised November 8, 2007

    Revision Includes: Initiated to add Attributions and Annotations section and additional references in response to review. The previous Section A-3, Y-12 Facilities, was eliminated. No further changes occurred as a result of formal internal review. Incorporates formal NIOSH review comments. Constitutes a total rewrite of the document.

  • Occupational Medical Dose [171 KB (23 pages)]
    Revised June 18, 2007

    Revision Includes: Initiated to add Attributions and Annotations section and additional references in response to review. Added a Purpose and Scope subsection to the Introduction (Section 3.1). Incorporates formal internal and NIOSH review comments. This revision results in no change to the assigned dose and no PER is required.

  • Occupational Environmental Dose [860 KB (50 pages)]
    Revised July 20, 2006

    Revision Includes: Revision initiated to incorporate definitions and directions for dose reconstruction for non-presumptive cancers that are excluded from the 1943 through 1947 Special Exposure Cohort. Environmental concentrations in Tables D1 through D6 for the years 1943 through 1947 were marked as 'Reserved'.

  • Occupational Internal Dose [1.3 MB (79 pages)]
    Revised March 12, 2012

    Revision Includes: Addition of new SEC designation to Section 5.1.3 to clarify, correct, and update the SEC class of covered employees. Added U-232 exception to Section 5.2.2. Added internal coworker study (formerly ORAUT-OTIB-0029) as Attachment B. Revision initiated to add Attributions and Annotations section and make minor editorial corrections. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.

  • Occupational External Dose [516 KB (61 pages)]
    Revised December 18, 2009

    Revision Includes: Attachment A in earlier versions of this document was deleted and the relevant data incorporated in the main body of the current document. Sections 6.3.1, 6.3.2, 6.3.3, 6.3.4, 6.4.2, 6.5.1, and 6.5.2 were revised to incorporate updated data from a number of Technical Information Bulletins. Updates references within the text and Reference Section. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.

Top of Page

Technical Information Bulletins (TIBs)

  • Bayesian Methods for Estimation of Unmonitored Y-12 External Penetrating Doses with a Time-Dependent Lognormal Model

    Document Number: ORAUT-OTIB-0015 Rev-00

    This document has been canceled. Bayesian methods are no longer used for dose reconstructions. Therefore, information in ORAUT-OTIB-0015 Rev-00 is no longer relevant.

    About this Document: Establishes the technical basis for the Bayesian Methods for estimation of unmonitored Y-12 external penetrating doses with a time-dependent lognormal model.

  • Coworker External Dosimetry Data for the Y-12 National Security Complex [457 KB (35 pages)]

    Document Number: ORAUT-OTIB-0064 Rev-02

    Revised: April 29, 2013

    Revision Includes: Updates Section 6.1 and adds update of previous ORAUT-OTIB-0047, Rev 00 as Attachment A. No sections were deleted. No changes occurred as a result of formal internal review. Incorporates formal NIOSH review comments. Constitutes a total rewrite of the document.

  • Effect of Threshold Energy and Angular Response of NTA Film on Missed Neutron Dose at the Oak Ridge Y-12 Facility [286 KB (23 pages)]

    Document Number: ORAUT-OTIB-0051 Rev-00

    About this Document: Describes the effect of threshold energy and angular response of NTA film on missed neutron dose at the Oak Ridge Y-12 facility.

    Approved: May 15, 2006

  • External Radiation Dose Estimates For Individuals Near the 1958 Criticality Accident at the Oak Ridge Y-12 Plant [381 KB (21 pages)]

    Document Number: ORAUT-OTIB-0057 Rev-00

    About this Document: To be used for external radiation dose estimates for individuals near the 1958 criticality accident at the Oak Ridge Y-12 plant.

    Approved: May 15, 2006

  • External Radiation Monitoring at the Y-12 Facility During the 1948-1949 Period--CANCELED

    Document Number: ORAUT-OTIB-0047 Rev-00

    Note: This document has been canceled. There is no longer a need to keep this Technical Information Bulletin as a stand-alone document. The information about the methods contained in this document has been incorporated into ORAUT-OTIB-0064 Rev. 02, Coworker External Dosimetry Data for the Y-12 National Security Complex. Previous versions of this document are located on this page under the Document Archive for Y-12 Plant Documents section.

  • Historical Evaluation of the Film Badge Dosimetry Program at the Y-12 Plant in Oak Ridge, Tennessee: Part 1 - Gamma Radiation [1.3 MB (104 pages)]

    Document Number: ORAUT-OTIB-0044 Rev-01

    Revised: April 29, 2013

    About this Document: Provides information on the Y-12 film badge for the monitoring of neutron radiation. This document was previously an ORAU report converted to ORAUT-OTIB-0045 Rev 01. Revisions include formatting, editorial changes, addition of required language on page 6 in Section 1.0, and a complete rewrite of Section 3.0. New information was added on sources of neutron exposure at the Y-12 site in Table 3.1 of Section 3.0 and a large number of new references were added. Attachment B was also added which provides supporting data on neutron doses to Y-12 workers during the film badge period from another recent study. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.

  • Historical Evaluation of the Film Badge Dosimetry Program at the Y-12 Plant in Oak Ridge, Tennessee: Part 2 - Neutron Radiation [787 KB (56 pages)]

    Document Number: ORAUT-OTIB-0045 Rev-01

    Revised: November 30, 2009

    About this Document: Provides information on the Y-12 film badge for the monitoring of neutron radiation. This document was previously an ORAU report converted to ORAUT-OTIB-0045 Rev 01. Revisions include formatting, editorial changes, addition of required language on page 6 in Section 1.0, and a complete rewrite of Section 3.0. New information was added on sources of neutron exposure at the Y-12 site in Table 3.1 of Section 3.0 and a large number of new references were added. Attachment B was also added which provides supporting data on neutron doses to Y-12 workers during the film badge period from another recent study. Incorporates formal internal and NIOSH review comments. Constitutes a total rewrite of the document.

  • Historical Evaluation of the Film Badge Dosimetry Program at the Y-12 Plant in Oak Ridge, Tennessee: Part 3 - Beta Radiation [1 MB (72 pages)]

    Document Number: ORAUT-OTIB-0046 Rev-00

    About this Document: Provides background information on the Y-12 external dosimetry program related to film badge monitoring of beta radiation. Incorporates formal internal and NIOSH review comments. Attributions and Annotations section added. Added references and made editorial changes. No further changes occurred as a result of formal internal and NIOSH review of the Attributions and Annotations section. There is no change to the assigned dose and no PER is required.

    Approved: June 22, 2007

  • Individual Dose Adjustment Procedure for Y-12 Dose Reconstruction--CANCELED

    Document Number: ORAUT-OTIB-0013 Rev-00

    Note: This document has been canceled. There is no longer a need to keep this information in a stand-alone document. The information about the methods contained in this document has been incorporated into ORAUT-OTIB-0064 Rev 01, Coworker External Dosimetry Data for the Y-12 National Security Complex.

  • Internal Dosimetry Coworker Data for Y-12

    Document Number: ORAUT-OTIB-0029 Rev-00

    This document has been canceled. There is no longer a need to keep this information in a stand-alone document. The information contained in this document has been incorporated into the Y-12 National Security Complex – Occupational Internal Dose Technical Basis Document, ORAUT-TKBS-0014-5 Rev 03.

    About this Document: TIB for assignment of Y-12 internal doses based on coworker bioassay data.

    Approved: April 5, 2005

  • Potential Missed Dose to Nuclear Weapons Assemblers at the Y-12 Plant During the Period from 1958 to 1990 [111 KB (10 pages)]

    Document Number: ORAUT-OTIB-0074 Rev-00

    About this Document: New Technical Information Bulletin that provides bounding estimates of potential missed radiation doses to weapons assemblers who worked in the dry room of Building 9204-2 at the Oak Ridge Y-12 Plant during the period from 1958 to 1990.

    Approved: March 13, 2009

Program Evaluation Reports (PERs) and Program Evaluation Plans (PEPs)

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.

  • OCAS-PER-0031 Rev-00: Program Evaluation Report: Y-12 TBD Revisions [17 KB (2 pages)]

    Approved: December 18, 2007

    About this Document: Document to determine which previously completed claims require evaluation for the effect of revising the Y-12 Plant TBD.

    Summary: There were 693 Y-12 claims completed prior to January 12, 2006, with a probability of causation below 50%. The dose reconstruction methodology of each will be reviewed to determine if a new dose reconstruction is necessary to determine if the revisions increase the dose estimate. NIOSH will review these dose reconstructions to determine if they meet the criterion listed in this PER. NIOSH will provide DOL with the list of 693 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.

Public Comments on Y-12 Plant Documents

How to Submit Comments
Comments on Y-12 documents can be submitted to the NIOSH Docket Officer electronically by e-mail 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 (021) on all comments.

Comments Received

Document Archive for Y-12 Plant Documents

  • Site Profile: Introduction section
  • Site Profile: Site Description section
  • Site Profile: Occupational Medical Dose section
    • Page Change Revision April 18, 2006 [141 KB (20 pages)]

      Page Change Revision Includes: Page change initiated to revise text in Table 3-5 on page 10 in Section 3.4 to remove reference that uterus is a surrogate for ovaries. No changes occurred as a result of formal internal review. No sections were deleted. Text on page 10 was revised in response to NIOSH formal review.

    • Page Change Revision October 11, 2005) [137 KB (19 pages)]

      Page Change Revision Includes: Page change initiated to incorporate the definition of U.S.C. on page 4 and details for the definition of a DOE facility on page 5. No sections were deleted.

    • Page Change Revision September 9, 2004 [132 KB (18 pages)]

      Page Change Revision Includes: Deletes references to Kathren et al., to be published on pages 7, 11, 17 and 18. This document has not been published. Adds references on pages 7, 11, 17 and 18 for ORAU (Oak Ridge Associated Universities) 2003, Technical Information Bulletin: Dose Reconstruction from Occupationally Related Diagnostic X-ray Procedures, ORAUT-OTIB-0006 Rev 00, Oak Ridge, Tennessee. November 14, 2003.

    • Approved December 15, 2003 [301 KB (19 pages)]
  • Site Profile: Occupational Environmental Dose section
  • Site Profile: Occupational Internal Dose section
    • Page Change Revision October 10, 2006) [434 KB (47 pages)]

      Page Change Revision Includes: Page change revision initiated to incorporate Y-12 National Security Complex Special Exposure Cohort class descriptions in newly added Section 5.1.3 on page 10. Minor changes occurred on pages 6, 8, and 9. Added one reference on page 37. Incorporates one new acronym, editorial changes on pages 8, 9, and 10, modifications to SEC instructions in Section 5.1.3.1 on page 10. Two references were deleted from the Reference Section. Incorporates internal and NIOSH formal review comments. No sections were deleted. This revision results in no change to the assigned dose.

    • Revised August 3, 2006 [427 KB (47 pages)]

      Revision Includes: Revised to incorporate additional directions for dose construction for non-presumptive cancers that are excluded from the 1943 through 1947 Special Exposure Cohort. Approved issue of Revision 02. Removed Section 5.4 from the text and Table of Contents, as the most recent page change addresses 1943-1947, and coworker data are used for 1948 to 1950, as specified in the coworker TIB. Incorporates NIOSH formal review comments. This revision results in no change to the assigned dose.

    • Page Change Revision February 14, 2006 [410 KB (46 pages)]

      Page Change Revision Includes: Approved page change revision. Page changes initiated to incorporate definitions and directions for dose reconstruction for non-presumptive cancers that are excluded from the 1943 through 1947 Special Exposure Cohort. Affected pages are: page 7, page 9 in Section 5.1, pages 20 and 21 in Section 5.2.1.1, and page 36 in the Reference Section. No sections were deleted.

    • Page Change Revision January 12, 2006 [415 KB (45 pages)]

      Page Change Revision Includes: No changes occurred as a result of formal internal review. Page change initiated to make minor changes to text in Section 5.1, page 7. Deletes and adds text about the default value for the Th-228/Th-232 equilibrium ratio for lung counts in Section 5.3, page 31. Adds new Figure 5.4. - variation of activity in natural thorium after a single purification on page 31. Also, changes date in C. M. West reference on page 36. No sections were deleted.

    • Page Change Revision October 11, 2005 [393 KB (44 pages)]

      Page Change Revision Includes: Page change initiated to incorporate the definition of U.S.C. on page 6 and details for the definition of a DOE facility on page 7. No sections were deleted.

    • Revised May 10, 2005 [388 KB (44 pages)]

      Revision Includes: First revision to include table numbers and titles in the body of the document.

  • Site Profile: Occupational External Dose section
    • Revised June 2, 2009 [423 KB (56 pages)]

      Revision Includes: Revision to add Section 6.1.3.3 and Attachment B to address the Special Exposure Cohort (SEC-00098). Updates required language and adds purpose and scope in Section 6.1. Revised to incorporate additional directions for dose reconstruction for nonpresumptive cancers that are excluded from the March 1, 1943, through December 31, 1947, Special Exposure Cohort in Section 6.1.3.3. Adds Attributions and Annotations Section. Incorporates formal internal and NIOSH review comments.

    • Page Change Revision May 11, 2006 [365 KB (50 pages)]

      Page Change Revision Includes: Updates required language in Introduction (Section 6.1) on page 9. Revised to incorporate additional directions for dose reconstruction for non-presumptive cancers that are excluded from the 1943 through 1947 Special Exposure Cohort on page 10 Section 6.1. Revised to delete text on page 10 in Section 6.1, specified in comments from OCAS review. No sections were deleted.

    • Page Change Revision February 14, 2006 [361 KB (49 pages)]

      Page Change Revision Includes: Approved page change revision. Page changes initiated to incorporate definitions and directions for dose reconstruction for non-presumptive cancers that are excluded from the 1943 through 1947 Special Exposure Cohort. Affected pages are: page 7, pages 8 and 9 in Section 6.1. No sections were deleted.

    • Page Change Revision October 11, 2005 [360 KB (48 pages)]

      Page Change Revision Includes: Page change initiated to incorporate the definition of U.S.C. on page 7 and details for the definition of a DOE facility on page 8. No sections were deleted.

    • Approved November 19, 2003 [289 KB (47 pages)]
  • Technical Information Bulletin 64: Coworker External Dosimetry Data for the Y-12 National Security Complex
    • Revised December 18, 2009 [431 KB (21 pages)]

      Document Number: ORAUT-OTIB-0064 Rev-01

      Revision Includes: Revision to modify Sections 4.0 and 5.0 to be consistent with current practices of applying coworker data. Table 7-1c and references to Tables 7-1a, 7-1b, and 7-1c were added in Section 7.0. Table 7-1c includes the 95th- and 50th-percentile annual doses derived from Table 7-1a. Adds details for Table 7-1c in Section 7.0. In Section 7.0, Table 7-2 was updated to include 1947 to 1949. Incorporates formal and NIOSH review comments. Updated Attributions and Annotations. Updated references. No sections were deleted.

    • Approved: August 3, 2009 [278 KB (21 pages)]

      Document Number: ORAUT-OTIB-0064 Rev-00

      About this Document: Provides background information on the Y-12 coworker external dosimetry data and includes tables with annual values that may be used in the process of assigning doses for unmonitored years of employment.

  • Technical Information Bulletin 47: External Radiation Monitoring at the Y-12 Facility During the 1948-1949 Period--CANCELED
    • Approved September 20, 2005 [178 KB (15 pages)]

      Document Number: ORAUT-OTIB-0047 Rev-00

      About this Document: Summarizes 1948-1949 monitoring data for the Y-12 site.

      Note: This document has been canceled. There is no longer a need to keep this Technical Information Bulletin as a stand-alone document. The information about the methods contained in this document has been incorporated into ORAUT-OTIB-0064 Rev. 02, Coworker External Dosimetry Data for the Y-12 National Security Complex.

  • Technical Information Bulletin 13: Individual Dose Adjustment Procedure for Y-12 Dose Reconstruction--CANCELED
    • September 9, 2004 [148 KB (9 pages)]

      Document Number: ORAUT-OTIB-0013 Rev-00

      About this Document: Describes an individual dose adjustment procedure that can be used as part of the dose reconstruction for certain workers at the Y-12 Plant.

      Note: This document has been canceled. There is no longer a need to keep this information in a stand-alone document. The information about the methods contained in this document has been incorporated into ORAUT-OTIB-0064 Rev 01, Coworker External Dosimetry Data for the Y-12 National Security Complex.

  • Technical Information Bulletin 29: Internal Dosimetry Coworker Data for Y-12
    • Approved: April 5, 2005 [308 KB (25 pages)]

      Document Number: ORAUT-OTIB-0029 Rev-00

      About this Document: TIB for assignment of Y-12 internal doses based on coworker bioassay data.

      Note: This document has been canceled. There is no longer a need to keep this information in a stand-alone document. The information contained in this document has been incorporated into the Y-12 National Security Complex – Occupational Internal Dose Technical Basis Document, ORAUT-TKBS-0014-5 Rev 03.

 
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