Mound

Special Exposure Cohort

Petition Evaluation Report

James W. Neton, Ph.D., CHP

Associate Director for Science

National Institute for Occupational Safety and Health

Division of Compensation Analysis and Support

September 2012

Denver, CO
Petition Overview

 This is an 83.14 petition that was submitted b

EEOICPA claimant whose dose reconstruction not be completed by NIOSH due lack of suffic

dosimetry‐related information

 NIOSH’s determination that it is unable to com

a dose reconstruction for an EEOICPA claimanqualified basis for submitting an SEC petition

pursuant to 42 C.F.R. § 83.9(b)

 Claimant was employed at the Mound Labora

during the period when tritium logbook data unavailable

 Petition received on August 15, 2010
Petition Overview—cont.

 SEC class previously established under SEC

• Basis for class was inability to reconstruct rado

exposure in the R and SW buildings (the Moun

complex) from March 1, 1959 through March 5

 Class definition for SEC‐00171 based on th

monitoring status of the worker

• Workers in the Mound tritium complex were m

for tritium
Petition Overview—cont.

 Mound tritium urinalysis logbooks are use

DOL to confirm tritium monitoring status

 NIOSH discovered that there are gaps in th

collection of tritium logbooks

 Gaps include:

• September 1, 1972 through December 31, 197• January 1, 1975 through December 31, 1976
Feasibility Determination

 During the time periods where there are gaps 

tritium logbooks, NIOSH cannot determine wh

workers entered the Mound tritium complex

 The default assumption during these years is 

workers were potentially exposed to radon intritium complex

 NIOSH has determined that there is insufficie

information to estimate an upper bound rado

exposure to these workers under plausiblecircumstances
Health Endangerment

 The evidence reviewed in this evaluation indic

that some workers in the class may haveaccumulated chronic radiation exposures thro

intakes of radionuclides and direct exposure tradioactive materials.

 Consequently, NIOSH is specifying that health 

have been endangered for those workers covethis evaluation who were employed for a num

work days aggregating at least 250 work days 

the parameters established for this class or incombination with work days within the param

established for one or more other classes of

employees in the SEC.
Proposed Class

All employees of the Department of Energ

predecessor agencies, and their contractor

subcontractors who worked at the Mound in Miamisburg, Ohio, from September 1, 1

through December 31, 1972, or from Janua

1975 through December 31, 1976, for a nu

of work days aggregating at least 250 work 

occurring either solely under this employmin combination with work days within the

parameters established for one or more ot

classes of employees included in the Speci

Exposure Cohort.
Recommendation

 For the period from September 1, 1972 through D

31, 1972, or from January 1, 1975 through Decem

1976, NIOSH finds that it cannot reconstruct for members of the proposed class with sufaccuracy. 

Class Feasibility Health Endan

September 1, 1972

–

December 31, 1972

or

January 1, 1975

through December 31,

1976

No Yes