Chemical Safety Program: Introduction of the TEELs Database System

Introduction – Protective Action Criteria (PAC) Database System

This site allows users to quickly search the U.S. Department of Energy's (DOE’s) database of Protective Action Criteria (PAC) values. It includes searchable fields for chemical name, chemical formula, Chemical Abstract Service Registry Number (CASRN), UN number, and SAX number. This site also provides a list of PAC tables in PDF and Excel formats. PAC values in the searchable database and tables correspond to Revision 26, published September 2010. This database provides information for 3,388 chemicals. TEEL values are always subject to change, being replaced by AEGLs or ERPGs when new values are published, and many are updated annually when different exposure limits [e.g., Permissible Exposure Limits (PELs) or Threshold Limit Values (TLVs)] or new toxicity data are published. New chemicals for which PAC values are derived are added at the same time. PACs for emergency planning of chemical release events are based on the chemical exposure limit values provided in: Final and interim Acute Exposure Guideline Levels (AEGLs). AEGLs (see http://www.epa.gov/oppt/aegl/index.htm) are developed by the U.S. Environmental Protection Agency (EPA). AEGLs are defined for five time periods: 10 minutes, 30 minutes, 60 minutes, 4 hours, and 8 hours. The 60-minute AEGL values have been selected for use in the PAC database. Emergency Response Planning Guidelines (ERPGs). ERPGs are produced by the American Industrial Hygiene Association (AIHA) Emergency Planning Committee (see http://www.aiha.org/foundations/guidelinedevelopment/erpg/Pages/default.aspx). Temporary Emergency Exposure Limit (TEEL) data sets. TEELs (see http://orise.orau.gov/emi/scapa/chem-pacs-teels/default.htm) are developed by the DOE Office of Emergency Management (NA-41). Background The procedures for developing TEELs are described in DOE-HDBK-1046-2008 , Temporary Emergency Exposure Limits: Methods and Practice. Requests for chemical additions to the PAC dataset or suggestions related to the format of the dataset and other comments are welcome. Anyone desiring PAC values for chemicals not in the PAC Revision 26 dataset is asked to send the request to the PAC development team at pacdevelopment@listserv.orau.gov or use the form provided on the SCAPA webpage (https://orise.orau.gov/emi/forms/TEELRequestForm.html). Further information, including links to the PAC/TEEL Development Team, is provided on the Chem PACs/TEELs webpage at: http://orise.orau.gov/emi/scapa/teels.htm.

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