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OLS Field Name OLS Field Data
Main Title Assessment of the Long-Term Precision of Continuous Emission Monitors.
Author Rollins, R. ; Logan, T. J. ; Midgett, M. R. ;
CORP Author Environmental Monitoring Systems Lab., Research Triangle Park, NC.
Year Published 1985
Report Number EPA/600/D-85/111;
Stock Number PB85-201150
Additional Subjects Monitors ; Quality control ; Quality assurance ; Standards ; Inspection ; Assessments ; Performance evaluation ; Calibrating ; Sulfur dioxide ; Nitrogen oxides ; Oxygen ; Carbon dioxide ; Concentration(Composition) ; National government ; Scrubbing ; Continuous emission monitoring systems ; Stationary sources ; Standards of performance for new stationary sources ; Air pollution monitors ; Coal fired power plants
Library Call Number Additional Info Location Last
NTIS  PB85-201150 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 16p
Abstract The EPA has promulgated regulations requiring certain stationary sources to show continual compliance with emission limits, by using a Continuous Emission Monitoring System (CEMS). In order to make reliable compliance determinations, the quality of the monitoring data is important. Two principal parameters in assessing and describing data quality are precision and accuracy. The paper discusses the long-term precision for five CEMS's installed at scrubber-controlled, coal-fired power plants. Precision estimates were made by utilizing available daily calibration drift data. Six to seven months of calibration drift data were analyzed for each pollutant (SO2, NOx) and diluent (O2, CO2) analyzer in the CEMS. Results show that most of the monitors exhibited significant bias and variance over the months involved. Monitoring data precision varied significantly from month to month and does not appear to be related to monitor type or manufacturer.
PUB Date Free Form 1985
Category Codes 14B; 68A; 99A; 97R
NTIS Prices PC A02/MF A01
Primary Description 600/08
Document Type NT
Cataloging Source NTIS/MT
Control Number 521420604
Origin NTIS
Type CAT