NIOSH Reports

NIOSH Reports on Special Exposure Cohorts

NIOSH’s role in EEOICPA is an important one because they do the workers’ dose reconstructions. In 2002 Congress published Guidelines for Determining the Probability of Causation under EEOICPA.

Special Exposure Cohorts

One of the provisions under EEOICPA is for Special Exposure Cohorts (SEC). NIOSH’s SEC webpage discusses how to file an SEC.

NIOSH Reports on Facility Contamination



This email stream was obtained under the Freedom of Information Act. The emails discuss how NIOSH should prioritize Special Exposure Cohort petitions.


NIOSH has issued a blanket fee waiver for all requesters who act as advocates of former nuclear workers.

A Critique of NIOSH’s Dose Reconstruction Methodology

November 2012 NIOSH Ombudsman’s Workshop

The purpose of this EEOICPA Workshop was to give advocates an opportunity to observe multi-agency representatives giving in-depth instruction and guidance on program nuances such as dose reconstruction, special exposure cohort process, site exposure matrices, home health, and other relevant issues.

The workshop was also a great opportunity for advocates to meet and network with each other as well as interact with agency representatives. It was an educational and fun rather than an adversarial or confrontational experience for the advocates who are much needed in the EEOICPA process. Below you will find PowerPoints and videos made at the workshop to assist advocates and claimants better understand how EEOICPA works to help all valid EEOICPA claims get paid.

At the workshop, a question was raised on how to know which cancers had a larger chance of being compensable. NIOSH responded that internal exposures often resulted in larger organ doses than external exposures, and that different radionuclides concentrate in different organs. The probability of causation depends on the cancer. NIOSH was asked where someone can find information about what materials concentrate in what organs, and replied that information is contained in a number of ICRP reports, and promised to send the numbers of those reports.  NIOSH warned that ICRP sells the reports and that they are expensive. NIOSH has provided the ICRP reports that describe how radioactive materials behave in the body are given in the following message. Be sure to read the introductory sentences, because they identify reports that are not in the table.

  •  Lung model is used for all elements and it is ICRP 66
  • GI tract model is used for all elements and it is ICRP 30
  • There is a different biokinetic model for each element and that model is attached to the lung and GI tract models to model the intakes.
  •  Various reports describe the biokinetic models for various elements (see table below). For those that are not listed, the model in ICRP 30 is used. (The table is on page 9 of IG-2).


The following web link to IG-002 that is posted on the DCAS website. It provides a general description of the lung and GI model, as well as some basic concepts on how we go about DRs:

PowerPoint Presentations

Dose Reconstruction Power Points

NIOSH has held several workshops explaining how they do their dose reconstructions. Here are three PowerPoint presentations from their September 22-23, 2009 workshop.

Dose Reconstruction Process Overview shows how NIOSH handles a claim from the beginning when they receive a claimant’s information from DOL through the dose reconstruction process.

Dose Reconstruction Examples illustrates an overestimate, an underestimate, best estimate and a partial estimate based on hypothetical claims.

Probability of Causation and NIOSH-IREP discusses how NIOSH uses the IREP as well as the reasoning and statistics it uses.


Validity of X-Ray reports

Recently there has been some confusion within EEOICPA on whether certain x-ray reports are valid or not.  Some claimants have had their “b-reads” refused if the technician did not sign the report.  NIOSH’s Dr. Howard clarified the issue for ANWAG.  If you have had this problem, please contact ANWAG or EECAP for help.

Hooker Chemical Emails