Components for evaluation of direct-reading monitors for gases and vapors

In: http://stacks.cdc.gov/view/cdc/11956/

Abstract

"The Occupational Safety and Health Act of 1970 (Public Law 91-96) charged the National Institute for Occupational Safety and Health (NIOSH) with the responsibility for the development and evaluation of sampling and analytical methods for workplace compliance determinations. Under that charge, NIOSH and the Occupational Safety and Health Administration jointly undertook the evaluation of sampling and analytical methods for airborne contaminants by contract in 1974 to determine if methods met the criterion to produce a result falling within 25% of the true concentration 95 times out of 100. The present document further expands the experiments used during the initial methods development and evaluation research to direct-reading monitors for gases and vapors. This document provides discussion of the physical, operational, and performance characteristics for direct-reading monitors. Guidance is provided for experiments to evaluate response time, calibration, stability, range, limit of measurement, impact of environmental effects, interferences, and reliability of direct-reading monitors. Also included are evaluation criteria for the experiments and details for the calculation of bias, precision and accuracy, and monitor uncertainty." -NIOSHTIC-2 ; Part I. Direct-reading monitor background information -- Part II. Monitor types -- Part III. Suggested components in monitor evaluation -- Relevant standards -- References -- Appendix A. Estimation of accuracy -- Appendix B. Statistical evaluation of bias and precision for individual monitor units -- Appendix C. Statistical evaluation of bias and precision for a population of monitor units -- Appendix D. Measurement uncertainty -- Appendix E. Relationship of the NIOSH accuracy criterion to monitor performance specifications -- Appendix F. Alarm system evaluation -- Appendix G. R program for implementing Appendix F--lower confidence limit for negatives, controlling false negatives -- Appendix H. LaTeX translations of selected mathematical formulas -- Bibliography ; "July 2012." ; Also available via the World Wide Web as an Acrobat .pdf file (3.74 MB, 116 p.). ; Includes bibliographical references. ; Bibliography: p. 99.