Allied Chemical Corp. Plant

(Site Profile/Docket Number 067)

Location: Metropolis, Illinois

Also Known As: General Chemical Division, Allied Signal Metropolis Plant, Honeywell Metropolis Works Plant

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.

Open/Active SEC Petitions

To date, there are no open/active SEC petitions from Allied Chemical Corp. Plant.

Class(es) Added to the SEC

  • Atomic Weapons employees who were monitored or should have been monitored for exposure to ionizing radiation while working at Allied Chemical Corporation Plant in Metropolis, Illinois from January 1, 1959 through December 31, 1976, and who were employed for a number of work days aggregating at least 250 work days or in combination with work days within the parameters established for one or more other classes of employees in the Special Exposure Cohort.

    Note: This class was established from Petition 67

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.

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.

Worker Outreach Activities for the Allied Chemical Corp. Plant:

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

  • Site Profile for Allied Chemical Corporation Plant [677 KB (42 pages)]
    Revised May 5, 2014

    Revision Includes: Adds text in Section 5.0 and to incorporate changes to Table 5-2 based on ORAUT-OTIB-0070, Revision 01. Revises Sections 2.3, 2.4, 2.5, 2.7, 3.0, 3.2, 4.0, and 5.0, including Tables 5-1 and 5-3, as indicated pursuant to recommendations in Report-SCA-TR-SP2011-0012-PA. Replaces text in Section 1.0 and conformed to standard presentation. Includes editorial changes. Incorporates formal internal and NIOSH review comments.

Advisory Board and NIOSH Discussions on Allied Chemical Corp. Plant

The Allied Chemical Corp. 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.

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

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.

  • DCAS-PER-053, Rev. 0: Allied Chemical Corporation [89 KB (3 pages)]
    March 4, 2015

    About this Document: Determines the effect of a revision to the Allied Chemical Corporation Plant Technical Basis Document (TBD) on previously completed claims.

    Summary: Dose for 93 claims was recalculated using the current revisions of the TBD as well as any other applicable documents. The resulting probability of causation (POC) for all 93 claims was below 45%. NIOSH will provide the Department of Labor with the list of all the claims evaluated under this PER. Since none of the claims would now exceed a POC of 50%, NIOSH will not request the return of any of these claims.

Public Comments on Allied Chemical Corp. Plant Documents

How to Submit Comments

Comments on Allied Chemical Corp. Plant Documents can be submitted to the NIOSH Docket Officer electronically by email at 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 (067) on all comments.

Comments Received

No comments on Allied Chemical Corp. Plant documents have been received at this time.

Document Archive for Allied Chemical Corp. Plant

Site Profile for Allied Chemical Corp. Plant

  • Site Profile for Allied Chemical Corporation Plant [394 KB (34 pages)]
    Revised October 1, 2007

    Revision Includes: Initiated to add text in Section 2.0 and remove information regarding nonuranium radionuclides in Sections 3.0 and 5.0 to incorporate SEC evaluation report recommendation to not reconstruct nonuranium internal dose. Moved Figure 2-1. Incorporates formal internal and NIOSH review comments. Added reference for employee statement regarding X-rays. Constitutes a total rewrite of the document. The recently designated residual period is identified. Section 5.0, Estimating Exposures From Residual Radioactivity, expanded to address dose reconstruction methodologies for exposures received during the residual period. Added Attributions and Annotations section and additional references.

  • Site Profile for Allied Chemical Corporation Plant [249 KB (28 pages)]
    Approved February 1, 2006