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NIOSH Program Area:

Radiation Dose Reconstruction

 

Frequently Asked Questions (FAQs)
Dose Reconstruction

Once a claim is filed under The Act, the Department of Labor (DOL) determines if the employee worked at a covered facility during a covered time period and has a qualifying health condition. If the health condition in the claim is cancer, the case is then sent to NIOSH for dose reconstruction. Dose reconstruction is the scientific process of estimating a worker's past exposure to radiation. It uses exposure monitoring and other information to determine what levels of radiation the workers were exposed to while they worked at a facility.

Once the dose reconstruction is completed by NIOSH, the case is returned to DOL. The information from the dose reconstruction is used by DOL to determine the probability that a worker's cancer was "at least as likely as not" due to the employee's occupational exposure to radiation during employment at a covered facility.

To answer questions about the dose reconstruction, NIOSH developed a list of Frequently Asked Questions (FAQs) below. Links to other program FAQs are located on the "Find It!" navigation box under "On this page . . . "

Select the question you are interested in below by clicking its link. You will be taken to the answer located on this page. Links throughout the FAQs will guide you to further information.

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Dose Reconstruction

  • What is dose reconstruction?

    Dose reconstruction is the scientific process of estimating a worker's past exposure to radiation. It uses exposure monitoring and other information to determine what levels of radiation the workers were exposed to while they worked at a facility.

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  • What is the purpose of dose reconstruction?

    Dose reconstructions are used to estimate the radiation doses to which an individual worker or group of workers have been exposed. The information from the dose reconstruction is used by DOL to determine the probability that a worker's cancer was "at least as likely as not" due to the employee's occupational exposure to radiation during employment at a covered facility.

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  • What is a DCAS Program Specialist (formerly known as a Public Health Advisor-PHA)?

    Under the NIOSH Dose Reconstruction Program, Program Specialists oversee the processing of cancer cases filed under Subtitle B of The Act that are forwarded to NIOSH for dose reconstruction by the Department of Labor. Program Specialists assure consistent and quality processing of cases and act as a point of contact for case status information for claimants and their authorized representatives while their case is with NIOSH.

    Program Specialists are responsible for developing and managing cases as they go through the NIOSH dose reconstruction process. They develop and manage these cases by:

    • Communicating with the claimant and claimant authorized representatives, government agencies, and contract staff to:

      • collect data needed to conduct the dose reconstruction

      • identify and resolve discrepancies in the case file

      • address questions that may arise about the case and/or the NIOSH Dose Reconstruction Program

    • Performing a final review of the case file once the dose reconstruction is finalized to ensure the completeness and accuracy of the case file documentation

    • Submitting the case file to DOL for a final decision on the claim

    Note: DCAS Program Specialists were formerly called Public Health Advisors (PHAs). Their titles have changed, but their duties remain the same.

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  • What is a Health Physicist and what are their responsibilities under the NIOSH Dose Reconstruction Program?

    A Health Physicist (HP) is an individual with knowledge of the physical, biological, and chemical properties of radiation, radiation producing equipment, and radioactive materials. As such, they work to protect individuals, the population, and the environment from the potentially harmful health effects of radiation exposure. Health Physicists have technical skills encompassing many disciplines such as: biochemistry, biology, chemistry, ecology, industrial hygiene, mathematics, physics, and toxicology.

    Under the NIOSH Dose Reconstruction Program, HPs are primarily responsible for estimating occupational radiation exposure (dose reconstruction) for nuclear weapons workers covered under Subtitle B of the Energy Employees Occupational Illness Compensation Program Act of 2000. In doing so, HPs:

    • Conduct extensive data searches at various Department of Energy sites and federal and private records storage locations throughout the United States to obtain required information

    • Review and analyze work site and employee data

      • Examples of work site data: health physics practices and policies, monitoring practices, operations, production processes, safety procedures, radiological survey data, types and quality of radioactive materials used, incident reports

      • Examples of employee data: internal and external exposure records such as film badge readings, x-rays, urinalysis results

    • Develop and implement dose reconstruction policies, procedures, and guidelines

    • Develop and implement Special Exposure Cohort Evaluation Reports

    • Review and respond to issues identified by the Advisory Board and their contractor

    • Attend/conduct worker outreach meetings (meetings where energy employees can obtain program information and also provide information for consideration and possible use in dose reconstruction)

    • Ensure that Quality Control/Assurance measures are included in the entire dose reconstruction process

    • Interact with the Department of Energy and Department of Labor regarding programmatic and case-specific issues

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  • What is a Dose Reconstructionist?

    Under the NIOSH Dose Reconstruction Program, a Dose Reconstructionist is responsible for conducting dose reconstructions for the Program which include, but are not limited to, analyzing monitoring methods, performing uncertainty analyses, estimating organ or effective dose from available monitoring data, and incorporating any comments from Dose Reconstruction Report Reviewers. A Dose Reconstructionist is responsible for any and all revisions to a Dose Reconstruction Report.

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  • What is a Dose Reconstruction Report Peer Reviewer?

    Under the NIOSH Dose Reconstruction Program, a Dose Reconstruction Report Peer Reviewer is responsible for conducting a review of the Dose Reconstruction Report to ensure that all appropriate sources of information for possible doses are included and that all calculations are accurate.

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  • What is a Scientific/Technical Peer Reviewer?

    Under the NIOSH Dose Reconstruction Program, a Scientific/Technical Peer Reviewer is responsible for conducting a scientific and technical review of the key Program documents (e.g., Dose Reconstruction Report, Site Profile Document, SEC Petition Evaluation Report, Site-Specific or Multiple-Site TIB), and any other Program document created for use by the Program.

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  • What is a Site Expert?

    Under the NIOSH Dose Reconstruction Program, a Site Expert is responsible for advising on site-specific issues and incidents as necessary to ensure the completeness and accuracy of Site Profile Documents and Special Exposure Cohort Petition Evaluation Reports. Site experts are those individuals who, because of current or prior work experience (including consulting) at or for the site, possess or are aware of information that is relevant for reconstructing radiation doses experienced by claimants who worked at the site.

    Because of their work experience at or for sites under Program review and the need to prevent a conflict or bias (COB), Site Experts shall play only a very limited role in accomplishing key Program functions. They may be used by a document owner in crafting a key Program document, to provide both data and opinions on data to that document owner. In all cases where such information or prior studies or writings are included or relied upon by a key Program document owner, those materials shall be both fully attributed to the Site Expert and reprinted, if at all, only in an Appendix of the key Program document.

    Site experts are not permitted to serve as document owners or authors, or to make formal public presentations on a key Program document. However, at a formal public presentation, a Site Expert may be called upon to answer questions and serve as a source of information to the presenter in response to questions that arise during a presentation.

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  • What is a Subject Expert?

    Under the NIOSH Dose Reconstruction Program, a Subject Expert is responsible for advising on scientific and technical issues and incidents as necessary to ensure the completeness and accuracy of Site Profile Documents and SEC Petition Evaluation Reports. In contrast with Site Experts, Subject Experts are those individuals who have expertise in the subject matter of the activities performed at the site, but do not have any current or prior work experience at or for the subject site itself.

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  • Does NIOSH conduct dose reconstructions for workers who have been diagnosed with illnesses other than cancer?

    No. Under Subtitle B of The Act, NIOSH only conducts dose reconstructions on workers who have been diagnosed with cancer.

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  • How can a worker or survivor request an individual dose reconstruction?

    Anyone wishing to file a claim will need to complete DOL claims forms. These forms can be found under the Claims Forms section of the DOL EEOICP Web site.
    External Link: http://www.dol.gov/owcp/energy/index.htm

    DOL will collect medical, employment, and other information from the worker or survivor and make a decision about whether or not he or she qualifies for compensation and benefits.


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  • What is NIOSH doing to help claimants understand the dose reconstruction process?

    EEOICPA is a complex program that is based on very complex science, and we recognize that this makes it difficult for claimants to understand the dose reconstruction process. NIOSH provides many sources of information to help claimants understand this process:

    • Claimant Correspondence on the Dose Reconstruction Process
      While a case is at NIOSH for dose reconstruction, claimants and their authorized representatives receive various pieces of correspondence. This correspondence may provide case status, explanations of steps in the dose reconstruction process, dose reconstruction findings, and other helpful program information.

      Additional information on these documents can be found on the Frequently Asked Questions (FAQs) Claimant Correspondence page of our Web site.

    • Voluntary Phone Call
      Each claimant has the opportunity to participate in the phone call prior to the dose reconstruction process and again when a draft dose reconstruction is prepared. These calls are an opportunity for claimants to provide information and to ask questions about the process.

      Additional information on the phone calls can be found on the Frequently Asked Questions (FAQs) Phone Calls and Phone Call Information pages of our Web site.

    • Supplemental Information
      NIOSH provides supplemental information in a variety of forms that explain the technical aspects of the program in language and format suitable for a general audience:

      • Easy-to-read fact sheets and brochures

      • Short educational video designed to provide a basic understanding of the program to those who have a claim undergoing dose reconstruction

      • Glossary of terms commonly used in reference to NIOSH dose reconstructions and EEOICPA

      • NIOSH Web site which provides comprehensive information about NIOSH's dose reconstructions and other activities in support of the compensation program

      The documents mentioned above can be found on the DCAS Print Materials page of our Web site.

    • Additional Support
      Claimants can also contact NIOSH directly at 513-533-6800 (toll-free at 1-877-222-7570) or by e-mail at dcas@cdc.gov or ocas@cdc.gov for questions about the dose reconstruction process.

    NIOSH is always open to specific suggestions that would help us improve the clarity of our documents and our communication. We continue to strive to assist our claimants, claimant advocates, the public, and media and feedback is greatly appreciated.

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  • What information is needed to conduct a dose reconstruction?

    We try to use personal exposure information whenever possible. This would include film badge readings, x-rays, urinalysis results, incident reports, etc. If there is little or no personal exposure information, we use information from technical documents (e.g., technical basis documents, site profile documents, technical information bulletins), and coworker data to provide reasonable estimates of dose where the personal exposure information is lacking.

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  • Is there anything I need to send to NIOSH to help with the dose reconstruction?

    At the appropriate time, we will contact you to set up a convenient date and time for a voluntary phone call. That's a time we have put in our process to ask you for information we might need. Prior to the phone call, if we need any additional information from you, we will contact you. At any point in the process, you are more than welcome to provide any information which you may feel help your claim.

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  • How will NIOSH complete a dose reconstruction for a case when there is little or no exposure monitoring information available?

    If there is little or no personal exposure information, we use information from technical documents (e.g., technical basis documents, site profile documents, technical information bulletins), and data from other workers at the site to fill in the areas where the personal exposure information is lacking. The assumptions used in conducting dose reconstructions are designed to give the claimant the benefit of the doubt whenever estimated radiation dose levels are used. Dose reconstruction could require extensive data gathering and analysis. This may include:


    • Determining specific characteristics of the monitoring procedures

    • Identifying events that were unmonitored

    • Identifying the types and quantities of radioactive materials involved

    • Evaluating production processes and safety procedures

    • Identifying the locations and activities of exposed persons

    • Identifying comparable exposure circumstances for which data is available to make assumptions

    • Conducting a variety of complex analyses to understand the data compiled or estimated

    • Utilizing cancer risk models*

    *A cancer risk model is a mathematical model based on the dose-response relationship determined for a given cancer type and is used to estimate the probability of causation (PC) using information on radiation dose and personal data. Cancer risk models and the amount of radiation dose an energy employee was exposed to are the main determinants of probability of causation. The cancer risk models are based on the best science available and the radiation dose levels are based mostly on very generous dose reconstruction methods.

    NIOSH may also use the following sources of information:

    • Department of Energy (DOE) and its contractors, including Atomic Weapons Employers (AWEs) and the Former Worker Screening Program

    • NIOSH and other records from health research on DOE worker populations

    • Information shared during phone calls and records provided by the claimant

    • Co-workers of covered employees, or other witnesses with information relevant to the covered employee's exposure identified during a phone call with NIOSH

    • Labor union records from unions representing employees at covered facilities of DOE or AWEs

    • Other relevant information

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  • Why are technical documents sometimes used in completing dose reconstructions?

    NIOSH uses technical documents called Site Profiles, Technical Basis Documents, and Technical Information Bulletins as guides and summaries of sites to assist our Health Physicists with conducting dose reconstructions. These documents supplement or fill-in the gaps of information where an energy employee's personal monitoring information is lacking or incomplete. Technical documents provide a way of compiling the large quantity of site data and of providing instructions for preparing dose reconstructions consistently.

    Additional information on technical documents used in dose reconstruction can be found on the Frequently Asked Questions (FAQs) Technical Documents page.

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  • What happens if additional site information becomes available after a technical document has been completed?

    Our technical documents are considered "living" documents. This means that they are subject to change if relevant information becomes available to warrant that we make a change to a technical document.

    If the information has the potential to effect the outcome of previously completed dose reconstructions, a Program Evaluation Report (PER) is used to evaluate the information and determine whether or not dose reconstructions need to be reworked, additional reviews need to be conducted, corrective actions need to be taken, etc.

    A PER may be necessary when relevant new information becomes available, when there is a policy change, or when other programmatic changes have the potential to effect previously completed dose reconstructions. As required by our dose reconstruction regulation, any substantial change in our program requires review and re-examination of completed cases to determine if the changes would alter the compensability of the case.

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  • How will a dose reconstruction be done for my case?

    NIOSH starts by collecting an initial set of records from DOE and other sources that provide us with information on your radiation exposures. These records may, or may not, include personal monitoring of your radiation doses. In addition, the records might also include area monitoring of radiation levels and process descriptions that help characterize the possible levels of radiation exposures, the use of radiation protection measures, and the occurrence of incidents involving unexpected radiation exposures.

    The next step is to schedule a voluntary telephone call with you to try to identify information that may not be found in the records we have collected. After we have collected the information needed, we will perform analysis that allows us to estimate the range of radiation dose you may have been exposed to in your workplace. This range will include the least radiation you might have received and the most -- the "worst case." We will report the estimates of your dose with ranges that include the worst case to DOL.

    Before we report these estimates, however, we will send a copy of the dose reconstruction draft report to you. We will review the report with you, explaining in detail what records, information, and criteria were used to produce the estimates found in your dose reconstruction. This review will enable you to help us ensure that we have taken into account all you and others know about your exposures. In addition, the review will also inform you of exactly how we have done our work, so you can consider whether we have fully addressed any concerns you might have.

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  • How will I know when my case is ready for dose reconstruction?

    When your case is ready for dose reconstruction, we will send a letter to you that provides information about NIOSH's policy of selecting a Health Physicist (s) to work on a dose reconstruction for a case. (See Conflict of Interest Letter)

    Please note that dose reconstructions cannot be started until sufficient exposure information is collected. Once our contractor has received enough information to conduct the dose reconstruction for your case, your case will be assigned to a Health Physicist.

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  • How long does it take to complete a dose reconstruction?

    There are many steps necessary to complete each dose reconstruction, and each step varies for each claim. For example, obtaining the information to complete the dose reconstruction estimate may take a significant amount of time depending on the complexity and availability of the data. Therefore, there is no way to predict how long each claim may take to complete the dose reconstruction process.

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  • How many completed dose reconstructions have been sent back to DOL?

    For current numbers on cases returned to DOL for a decision, please refer to the NIOSH Web site's Claim Information page.

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  • What if I remember additional information that may be important to my dose reconstruction after DOL has made a decision?

    If you have additional information about your case after DOL has made a decision, you can contact DOL and provide them with the information. DOL will then decide whether or not your case should be reopened.

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  • What if I disagree with the findings of the dose reconstruction?

    We have worked hard to address the concerns of claimants that might lead to disagreement. NIOSH fully involves the claimant in the dose reconstruction process, makes use of relevant information the claimant and others bring to bear, and directly addresses the concerns we know claimants have.

    Claimants have the opportunity to participate in a closing phone call with NIOSH to review the dose reconstruction results and the basis on which the results were calculated.
    During the phone call, claimants can voice their disagreement with the findings and provide any additional relevant information that may affect the dose reconstruction or indicate that they are in the process of obtaining such information.

    In addition, the Advisory Board on Radiation and Worker Health, an independent federal advisory committee representing scientific, medical, and worker perspectives, reviews samples of NIOSH dose reconstructions to help ensure the quality of the program.

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  • Why is the Advisory Board on Radiation and Worker Health reviewing dose reconstructions?

    As The Act requires, the Advisory Board, an independent federal advisory committee representing scientific, medical, and worker perspectives, reviews NIOSH dose reconstructions for scientific validity and accuracy.

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  • How does the Advisory Board on Radiation and Worker Health select dose reconstructions to review?

    The Advisory Board has established a system to assist them in randomly selecting dose reconstructions for review. The system they are using helps the Advisory Board make sure that the random sample of cases selected for review represents a variety of places of employment and probability of causation values.

    Please note: The Advisory Board does not review cases which do not have a final decision from DOL, and they do not handle cases based on appeals of decisions.

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  • How confident are you and can the public be in the fairness of your methods of dose reconstruction and for identifying cancers that were caused by radiation?

    The Act recognizes that we will be dealing with uncertainties and limited data. We have used the best that science has to offer to develop the methods and guidelines for dose reconstruction and probability of causation. We are confident these methods and guidelines are very fair to workers.

    To the extent that the science and data involve uncertainties, these uncertainties are handled to the advantage rather than to the disadvantage of the claims. To help ensure that the methods and guidelines are as sound as possible, we will also provide opportunity for full review and comment on our work from the public and from the independent Advisory Board on Radiation and Worker Health.

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  • What is the Methods for Radiation Dose Reconstruction rule?

    This rule describes the methods that the Department for Health and Human Services/NIOSH will use to conduct a dose reconstruction for your case. The purpose of dose reconstruction is to characterize the occupational radiation environment to which you were exposed.

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  • Where can I find a copy of the Methods for Radiation Dose Reconstruction rule?

    You can find a copy of the Final Rule: Methods for Radiation Dose Reconstruction under The Act - 42 CFR 82 on the Dose Reconstruction page of this Web site.

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  • NIOSH completed my dose reconstruction and DOL calculated the probability of causation for my claim to be less than 50%. As a result, DOL's recommended decision was to deny compensation for my claim. Since that time, I have had two additional cancers. I reported the two additional cancers to DOL and my case was returned to NIOSH for a new dose reconstruction. NIOSH completed the new dose reconstruction using my two additional cancers and when DOL determined my probability of causation, it was again less than 50%. In fact, once the two new cancers were added to my dose reconstruction, the probability of causation percentage calculated by DOL was lower than the value of my first dose reconstruction. How is this possible? Shouldn't the addition of two more cancers increase the probability of causation value?

    NIOSH understands this concern. It may seem obvious that when additional cancers are added to a dose reconstruction it would increase the probability that radiation caused the multiple cancers. However, in some cases, the NIOSH dose reconstruction will result in a lower probability of causation when additional cancers are added. An explanation for how and why this can happen is as follows:

    Accurately estimating the exposure a worker received while working at a covered facility is a time consuming process. In order to complete dose reconstructions in as timely and efficient a manner as possible, NIOSH may make assumptions on dose estimates that are favorable to the claimant in order to simplify the dose reconstruction process.

    For instance, instead of completing a dose reconstruction which precisely estimates the worker's exposure for cases that would most likely result in a probability of causation well below the 50% necessary for the claim to be compensable by DOL, NIOSH will significantly over-estimate the exposure based on the highest levels of exposure observed or possible for the facility. If the claim will not be compensable even when using these significantly over-estimated exposure estimates, then no further refinement to the dose reconstruction is required.

    This manner of dose reconstruction is called an "efficiency measure." It allows NIOSH to issue a timely dose reconstruction where attempts to refine the exposure estimate would not result in a compensable claim (i.e., a full dose reconstruction would in all likelihood produce a much lower probability of causation than the over-estimated exposure values used).

    Anytime a new cancer(s) is reported to NIOSH by DOL, NIOSH is required to rework the dose reconstruction to include the new cancer(s). If the new cancer(s) creates a potentially compensable case, NIOSH must refine the dose reconstruction using more probable and precise exposure estimates and not the significant over-estimates as mentioned above. These new, more accurate exposure estimates will be lower than the original estimate because we no longer use the assumptions which overestimated the radiation dose for the cancer found in the initial dose reconstruction. The revised radiation dose estimate may result in a probability of causation for the new cancer(s) that is lower than the non-compensable estimate that was obtained for the first cancer using the over-estimated radiation exposure. That is why the addition of a new cancer(s) may result in a probability of causation that is lower than the probability found for the single original cancer. However, this does not always occur when a new cancer(s) is added to a claim and NIOSH has to rework the dose reconstruction. It is possible for additional cancer(s) to produce a full dose reconstruction that will be determined to be compensable by DOL.

    The use of "efficiency measures" and procedures for dose reconstructions that NIOSH follows under The Act are described in detail in Final Rule: Methods for Radiation Dose Reconstruction under EEOICPA--42 CFR 82 [this document in PDF PDF 129 KB (23 pages)].


  • I've listened to some of the discussions by NIOSH staff at public meetings and heard them mention best estimates, overestimates, underestimates and partial when talking about dose reconstructions. Dose reconstruction is confusing enough but what do all of these things mean? Are there different types of dose reconstructions? If so, why and how do they differ?

    During many of our public meetings, we have had discussions on the different methods we use to complete dose reconstructions under EEOICPA. During these discussions, you may have heard the terms best estimate, overestimate, underestimate, and at times, even partial dose reconstruction. All refer to the method that was used for completing the dose reconstruction.

    As an accepted scientific method, dose reconstruction provides an estimate of an employee's past work-related exposure to radiation, particularly when radiation monitoring data are unavailable, incomplete, or of poor quality. If we lived in a perfect world, dose reconstruction would not exist because we would have a complete record of each employee's radiation exposure for every minute of their employment history. Therefore, there would be no need to estimate radiation exposures because the exact radiation exposure would be present in the records. Unfortunately this does not exist and we use dose reconstruction methods to estimate exposure to radiation. Because these dose reconstructions are being completed as part of a compensation program, NIOSH uses efficiency methods and measures to complete dose reconstruction in as timely a manner as possible.

    The efficiency process employed by NIOSH is designed to allow for an accurate compensation decision by the Department of Labor, while minimizing the amount of time spent reconstructing a dose. Before starting the dose reconstruction, NIOSH conducts a preliminary review and makes a professional judgment of an energy employee's potential radiation exposure based on the findings of similar dose reconstructions to determine the proper dose reconstruction method to use. The different methods used to complete dose reconstructions are underestimate, overestimate, best estimate, and a partial (but complete) dose reconstruction.

    Underestimate -- The claim was processed using a conservatively low estimate of the worker's dose and was found to result in a probability of causation value that was equal to or exceeded 50%. This method does not necessarily include all of the workers' radiation dose data and is most appropriate for workers with high exposures or a cancer likely to be caused by radiation exposure (e.g., leukemia). NIOSH tests the assumption that probability of causation value is >50% by giving the energy employee the lowest likely dose. If the probability of causation value is still >50%, no further evaluation is required. If this method results in a probability of causation value <50%, NIOSH will refine the calculation (e.g., include more dose) toward a best estimate. If the probability of causation value remains <50%, another efficiency method must be used.

    Overestimate -- The claim was processed using plausible, worst-case assumptions for the worker's dose (i.e., the maximum plausible dose) and was found to result in a probability of causation value that was less than 50%. The dose estimate is much higher than what the energy employee received. An overestimate efficiency method may be used for an energy employee that had a very short duration of employment at a covered facility or was diagnosed with a cancer that is not a cancer likely to be caused by radiation exposure (e.g., prostate cancer). NIOSH tests this assumption by giving the energy employee the maximum plausible dose. If the probability of causation value is still <50%, no further evaluation is required. However, if this method results in a probability of causation value >50%, another dose reconstruction method must be used.

    Best Estimate -- A dose reconstruction performed using the complete set of data and information available to NIOSH and using reasonable claimant favorable assumptions.

    Partial Dose Reconstruction -- NIOSH conducts partial dose reconstructions for cases where an SEC class of employees has been designated, but the case does not meet criteria for compensation under the SEC. The energy employee may not have one of the qualifying cancers listed for the SEC and/or does not meet the employment criteria of the SEC class and therefore, a dose reconstruction must be completed for the claim. For cases in this situation, the addition of the SEC class was determined because some data was unusable in dose reconstruction and therefore, NIOSH can only reconstruct a portion of the dose. This type of dose reconstruction is complete and serves as a best estimate given that all reliable data available was used.


  • How does DCAS ensure the quality of their dose reconstructions?

    DCAS' Quality Assurance (QA) program involves all of the planned and systematic activities incorporated within the DCAS organizational structure, procedures, processes, and resources needed to implement EEOICPA (The Act). DCAS has integrated Quality Control into all aspects of the NIOSH dose reconstruction program. Quality Control involves operational activities aimed at systems and processes developed to ensure the quality of our dose reconstructions.

    The QA/QC process begins as soon as DCAS receives a cancer claim from the Department of Labor (DOL) for dose reconstruction and continues until a claim is returned to DOL for a compensation decision.

    Additional information can be found on the Quality Assurance/Quality Control (QA/QC) Activities page of our Web site.


  • Where can I find NIOSH dose reconstruction statistics?

    NIOSH dose reconstruction statistics are located on the Claim Information page of our Web site.


  • Who do I contact if I have additional questions about NIOSH dose reconstructions?

    If you have additional questions about NIOSH dose reconstructions, please contact DCAS by email at dcas@cdc.gov or ocas@cdc.gov or 513-533-6800 (toll-free at 1-877-222-7570).

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Page last updated: May 11, 2010
Page last reviewed: August 25, 2014
Content Source: National Institute for Occupational Safety and Health (NIOSH) Division of Compensation Analysis and Support