Radiation Dose Reconstruction

Mallinckrodt Chemical Co., Destrehan St. Plant
(Site Profile/Docket Number 014)

Location: St. Louis, Missouri

Also known as: Mallinckrodt Chemical Works
                         MCW
                         St. Louis Downtown Site

Site Profile

Basis for Development of an Exposure Matrix for the Mallinckrodt Chemical Company St. Louis Downtown Site and the St. Louis Airport Site, St. Louis, Missouri
(Revised November 22, 2010)
PDF 3 MB (242 pages)

Revision Includes: Incorporates SEC-00150 information in Section 1.0 for the St. Louis Airport Storage Site (SLAPS) as instructed by NIOSH. Additional changes in document include deletion of Sections 8.4, 8.6, and 8.8 and replacement of the material that is still applicable (considering the SEC determination) along with expanded instruction specific to SLAPS into a new Section, 9.0. In addition, the designation of covered periods noted in Section 1.0 was updated to reflect current program guidance. Incorporates formal internal and NIOSH review comments. Section 7.4 changed to clarify that medical x-ray exposure is not to be assigned at the Mallinckrodt Destrehan Street Plant due to the fact that the examinations were performed offsite. Section 1, 7.0 and 7.1 changed to clarify that external exposure to monitored employees is to be included in dose reconstructions for individuals employed prior to 1949. This exposure was previously excluded from dose reconstruction reports.

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Technical Information Bulletins (TIBs)

• Selected Geometric Exposure Scenario Considerations for External Dose Reconstruction at Uranium Facilities
  PDF 554 KB (16 pages)
  
  Note: Document was previously titled "Special External Dose Reconstruction Considerations for Mallinckrodt Workers."
  
  Document Number: DCAS-TIB-0013 Rev-01
  
  Revision Includes: Incorporates SC&A comments; reorganized procedure format; included dose reconstruction instructions for the application of geometric correction factors to the upper and lower torso; added information to clarify the bounding parameters associated with the Attila computation; NIOSH internal comments including procedure title change and applicability to other uranium facilities.
  
  Approved: November 23, 2010

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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.

Program Evaluation Report: Mallinckrodt TBD Revision
PDF 16 KB (2 pages)

Document Number: OCAS-PER-0015 Rev-00

About this Document: New document to determine which previously completed claims require evaluation for the effect of revising the Mallinckrodt TBD.

Approved: July 31, 2007

Summary: It is not possible to determine the magnitude of the change to dose without a new dose estimate. Since (as of issuance of this PER) no Mallinckrodt claims have yet been completed with the newest revision to the TBD, NIOSH is requesting that all Mallinckrodt claims with a dose reconstruction performed using Revision 1 of ORAUT-TKBS-0005 that have a Probability of Causation less than 50% be returned for a new estimate. A list of the population of 16 potentially affected claims is attached. A new dose reconstruction will be completed for each of the claims using the latest revision to the Mallinckrodt TBD.

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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 Mallinckrodt Chemical Co., Destrehan Street Plant:

At the current time, worker outreach activities have not been scheduled.

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Comments on Mallinckrodt Chemical Company Documents

How to Submit Comments
Comments on Mallinckrodt Chemical Company documents can be submitted to the NIOSH Docket Officer electronically by e-mail at NIOCINDOCKET@cdc.gov or printed comments can be mailed to NIOSH Docket Office, Robert A. Taft Laboratories, MS-C34, 4676 Columbia Parkway, Cincinnati, OH 45226. Please include the Site Profile/Docket Number (014) on all comments.

• Comments from Daniel W. McKeel, Associate Professor of Pathology and Immunology, Washington University School of Medicine, St. Louis
  April 19, 2005
  PDF 2.47 MB (14 pages)
  
  
• Advisory Board: Review of NIOSH Site Profile for Mallinckrodt Chemical Company, St. Louis Downtown Site, St. Louis, Mo.
  Contract No. 200-2004-03805
  Task Order No. 1
  SCA-TR-TASK1-0002
  January 31, 2005
  PDF 420 KB (102 pages)

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Special Exposure Cohort Petition Information for Mallinckrodt Chemical Company

• Classes Added to the SEC
  
  
  • Mallinckrodt Chemical Works, Destrehan Street Facility (1942-1948)--Employees of the DOE or DOE contractors or subcontractors employed by the Uranium Division of Mallinckrodt Chemical Works, Destrehan Street Facility, during the period from 1942 through 1948 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 within the parameters (excluding aggregate work day requirements) established for other classes of employees included in the SEC
    
    
  • Mallinckrodt Chemical Works, Destrehan Street Facility (1949-1957)--Department of Energy (DOE) employees or DOE contractor or subcontractor employees who worked in the Uranium Division at the Destrehan Street Facility of Mallinckrodt Chemical Works from 1949 to 1957 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 within the parameters (excluding aggregate work day requirements) established for other classes of employees included in the SEC
    
    
  • Mallinckrodt Chemical Works, Destrehan Street Facility (1958)--All employees of DOE, its predecessor agencies, and their contractors and subcontractors who worked in the Uranium Division at the Mallinckrodt Chemical Co., Destrehan Street Plant in St. Louis, Missouri, from January 1, 1958 to December 31, 1958, 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 SEC
  
  
• Documents Pertaining to the Result of the Administrative Review of the Secretary of HHS' Designation on the SEC Petition for Workers Who were Exposed to Radiation Dose from 1942 to 1948
  
  Administrative Review Documentation
  (March 29, 2006)
  PDF 462 KB (8 pages)
  
  
• Petitions Qualified for Evaluation
  
  
  1. Location: All locations in the Destrehan Street Plant
     
     Job Titles and/or Job Duties: All employees that conducted Atomic Energy Commission (AEC) work at the Destrehan Street Plant
     
     Period of Employment: 1942-1957
     
     
  2. Location: St. Louis, Missouri
     
     Job Titles and/or Job Duties: All employees who worked with uranium
     
     Period of Employment: January 1, 1958 to December 31, 1958
     
     
• Federal Register Notice Announcing that the Mallinckrodt Chemical Company SEC Petition has met the Minimum Qualifications for Review and Evaluation
  
  
  1. December 20, 2004 (1942-1957)
      PDF 98 KB (1 page)
     
     
  2. December 10, 2008 (January 1, 1958 to December 31, 1958)
      PDF 16 KB (1 page)
     
     
• Copy of the Petition Received
  
  
  1. Copy of the Petition Received Covering (1942-1957)
     (July 21, 2004)
     
     Pages 1-23
      PDF 1.13 MB (23 pages)
     
     Pages 24-47
      PDF 1.67 MB (24 pages)
     
     Page 48-70
      PDF 1.04 MB (23 pages)
     
     
  2. Copy of the Petition Received Covering 1958
     (November 18, 2008)
      PDF 82 KB (2 pages)
     
     
• SEC Petition Evaluation Report
  
  
  1. SEC Petition Evaluation Report: SEC-00012-1
     (July 21, 2004)
      PDF 98 KB (26 pages)
     
     SEC Petition Evaluation Report: SEC-00012-2
     (February 2, 2005)
      PDF 243 KB (48 pages)
     
     Supplement to the SEC Petition Evaluation Reports for Petitions SEC-00012-1 and 2
     (March 30, 2005)
      PDF 342 KB (17 pages)
     
     
  2. SEC Petition Evaluation Report: SEC-00133
     (December 1, 2008)
      PDF 71 KB (19 pages)
     
     
• Petition Discussed by the Advisory Board
  
  
  • The Advisory Board discussed the Mallinckrodt Chemical Plant petitions on February 8, 2005; April 27, 2005; July 6, 2006; and August 26,2005. A copy of the transcripts from these Advisory Board meetings are listed below:
    
    February 8, 2005 Excerpt: Mallinckrodt SEC Petition Discussions
     PDF 834 KB (256 pages)
    
    April 27, 2005
     PDF 578 KB (324 pages)
    
    July 6, 2005
     PDF 447 KB (250 pages)
    
    August 26, 2005 Excerpt: Discussions on Mallinckrodt SEC Petition
     PDF 125 KB (69 pages)
    
    
• Advisory Board Recommendation on SEC Petition
  
  
  1. Mallinckrodt Chemical Plant SEC petition (1942-1948)
     (March 11, 2005)
      PDF 109 KB (2 pages)
     
     Mallinckrodt Chemical Plant SEC petition (1949-1957)
     (September 15, 2005)
      PDF 475 KB (3 pages)
     
     
  2. Mallinckrodt Chemical Plant SEC petition (1958)
     (December 18, 2008)
      PDF 526 KB (2 pages)
     
     
• HHS Letter to Congress Regarding the SEC Petition
  
  
  1. Mallinckrodt Chemical Plant SEC petition (1942-1948)
     (April 11, 2005)
      PDF 438 KB (9 pages)
     
     Mallinckrodt Chemical Plant SEC petition (1949-1957)
     (October 14, 2005)
      PDF 287 KB (8 pages)
     
     
  2. Mallinckrodt Chemical Plant SEC petition (1958)
     (January 16, 2009)
      PDF 412 KB (9 pages)
     
     
• Federal Register Notice: Designation of a Class of Employees for Addition to the Special Exposure Cohort
  
  
  1. Mallinckrodt Chemical Plant SEC petition (1942-1948)
     (April 18, 2005)
      PDF 74 KB (1 page)
     
     Mallinckrodt Chemical Plant SEC petition (1949-1957)
     (November 4, 2005)
      PDF 77 KB (1 page)
     
     
  2. Mallinckrodt Chemical Plant SEC petition (1958)
     (January 29, 2009)
      PDF 64 KB (1 page)
     
     
• HHS Designation of Additional Members to the SEC
  
  
  1. Mallinckrodt Chemical Plant SEC Designation for 1942-1948
     (April 11, 2005)
     PDF 445 KB (5 pages)
     
     Mallinckrodt Chemical Plant SEC Designation for (1949-1957)
     (October 14, 2005)
     PDF 294 KB (5 pages)
     
     
  2. Mallinckrodt Chemical Plant SEC Designation for (1958)
     (January 16, 2009)
     PDF 417 KB (4 pages)
     
     
• Effective Date for the SEC Class
  
  
  1. May 12, 2005--Mallinckrodt Chemical Plant SEC (1942 to 1948)
     
     November 13, 2005--Mallinckrodt Chemical Plant SEC 1949 to 1957
     
     
  2. February 15, 2009--Mallinckrodt Chemical Plant SEC (1958)
     
     
• Federal Register Notice: Final Effect of Designation of a Class of Employees for Addition to the Special Exposure Cohort
  
  
  1. Mallinckrodt Chemical Plant SEC (1942-1948)
     (May 23, 2005)
     PDF 78 KB (1 page)
     
     Mallinckrodt Chemical Plant SEC (1949-1957)
     (December 27, 2005)
     PDF 103 KB (1 page)
     
     
  2. Mallinckrodt Chemical Plant SEC (1958)
     (February 27, 2009)
     PDF 68 KB (1 page)
     
     
• Letter to DOL Regarding the Addition of a New Class of Employees to the SEC
  
  
  1. Mallinckrodt Chemical Plant SEC (1942-1948)
     (May 17, 2005)
     PDF 26 KB (1 page)
     
     Mallinckrodt Chemical Plant SEC (1949-1957)
     (November 23, 2005)
     PDF 409 KB (1 page)
     
     Additional Letter to DOL regarding the handling of Mallinckrodt Cases for New SEC Class for (1949-1957)
     (February 22, 2006)
     PDF 19 KB (1 page)
     
     
  2. Mallinckrodt Chemical Plant SEC (1958)
     (February 24, 2009)
     PDF 47 KB (1 page)
     
     
• Letter from DOL Regarding the Return of All Cases for the New SEC Class
  
  
  1. Mallinckrodt Chemical Plant SEC (1942-1948)
     (June 17, 2005)
     PDF 217 KB (2 pages)
     
     Mallinckrodt Chemical Plant SEC (1949-1957)
     (December 7, 2005)
     PDF 215 KB (3 pages)
     
     
  2. Not available at this time.
     
     

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Previous Versions of Mallinckrodt Chemical Company Documents

• Site Profile: Basis for Development of an Exposure Matrix for the Mallinckrodt Chemical Company St. Louis Downtown Site and the St. Louis Airport Site, St. Louis, Missouri
  
  
  • Page Change Revision May 25, 2009
    PDF 3 MB (225 pages)
    
    Page Change Revision Includes: Page change initiated to incorporate SEC information on pages 10-13 in Section 1.0 (extension of class to 12/31/1958) as instructed by NIOSH. Updated NIOSH required language on pages 10 and 11 in Section 1.0. Added information on pages 106-108 in Section 6.5. Updated NIOSH reference on pages 106-108, 124, 128 and 216 in Sections 7.1, 7.3, 8.5, 8.6, and Attachment A, respectively. Added reference on page 141 in Reference Section. On pages 158-160, updated NIOSH and ORAUT references in Reference Section. On page 210, updated NIOSH reference in Table A-34. Table A-40 on page 215 was revised to clarify that tabulated intakes represent gross alpha activity and to provide guidance on isotopic mixture to be applied. Incorporates formal internal and NIOSH review comments.
    
    
  • Revised June 14, 2007
    PDF 3 MB (222 pages)
    
    Revision Includes: Reflects comments of the ABRWH. Constitutes a total rewrite of the document. Modified Purpose and Scope, and Appendix A to incorporate SEC information as instructed by NIOSH. Made minor editorial changes to eliminate readily discernable errors and eliminated extraneous intake tables. Added information to reconstruct doses from available monitoring and coworker data for the period 1949-1962, and to clarify some discrepancies between the early-in-the program draft and current guidance. Deleted Appendix D (which was formerly C). This revision changes the method for assigning uranium, radium and thorium coworker intakes and radon exposures and eliminates the application of equilibrium amounts of uranium progeny intakes to reconstruct dose. Incorporates formal internal and NIOSH review comments. Revised dates for operational period in sections 6 and 7 to end in 1958. Removed references to unmonitored thorium and radium exposures (since reconstruction of such exposures has been determined to be not feasible by the SEC action). Added a section titled "unmonitored raffinate exposures" to cover the period 1948 - 1958 and inserted the text "reserved" to indicate that reconstruction of internal exposure from such pathways is not covered in this TBD for the time period 1948 - 1958. This revision results in an increase in assigned dose and a PER is required.
    
    
  • Revised March 10, 2005
    PDF 2.7 MB (248 pages)
    
    Revision Includes: Incorporated comments on Section 8.0 and to incorporate additional lately captured information. Revision to incorporate comments on Sections 7.0 and 8.0; to incorporate additional lately captured information regarding site work and external and radon exposure rates; to incorporate neutron exposure information; to incorporate information about the St. Louis Airport Site (SLAPS); and to provide additional guidance to dose reconstructors. Section 7.0, regarding external dose, remains on hold. Incorporated NIOSH comments.
    
    
  • Approved October 24, 2003
    PDF 1.3 MB (124 pages)
    
    
    
• Special External Dose Reconstruction Considerations for Mallinckrodt Workers
  PDF 760 KB (10 pages)
  
  Note: Document title has changed to "Selected Geometric Exposure Scenario Considerations for External Dose Reconstruction at Uranium Facilities."
  
  Document Number: OCAS-TIB-0013 Rev-00
  
  About this Document: Provides guidance on the application of geometry-based dose correction factors to external dosimetry badge data for Mallinckrodt workers in particular job classifications
  
  Approved: October 26, 2005

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