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Published byKerry Shonda Hunter Modified over 9 years ago
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Quality Management & Operations Support Branch Quality Assurance Section Presented By: Webster Tasat
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Quality Assurance Section n Quality Control n Quality Assessment
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Quality Control n Internal tasks which are performed on a routine basis to control the accuracy and precision of a measurement process. –Calibrations –Zero and Span Checks –Blanks –Duplicates
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Quality Assessment n External tasks which are performed on an occasional basis to assess the capability and performance of a measurement process. –Performance audits –System audits –Interlaboratory comparisons
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Performance Audits n A quantitative comparison of an air monitoring site’s analyzers and/or samplers with a device of known accuracy. Performance audits may also involve a laboratory’s ability to identify specific compounds. –Gas Analyzer Audits –Flow Audits –MET Audits –Laboratory –Siting
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System Audits n An on-site inspection and review of facilities, equipment, training, procedures, recordkeeping, data validation, data management, and reporting aspects of an organization’s monitoring program.
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Quality Assurance Audit Van
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Audit Van Interior
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Audit Gas Flow
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Gas Analyzer Audits n Analyzers –O3, CO, NO2, SO2, H2S n Through-the-Probe (TTP) n Audit concentration levels (O3, NO2, SO2, H2S) –High:0.35 - 0.45 ppm –Mid:0.15 - 0.20 ppm –Low:0.03 - 0.08 ppm
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CO Analyzer
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Flow Audits n Samplers –TSP, Lead, Dichot, TEOM, PM10, PM2.5 n Transfer Standards –Orifice, MFMs
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PM2.5 Sampler
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MET Audits n MET Sensors –Temp., WD, WS, RH, BP, Solar Radiation n Audit Sensors –NIST traceable –Factory Certified
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Met Tower
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Laboratory Audits n Toxic Audits –Sampler flow rates –Sampler leak checks n NMHC Audits n Whole Air Comparison Check n Laboratory Analysis
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NMHC Set-Up
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Additional QA Activities n Report on Quality Control/Quality Assessment Data n Oversee Data Control n Research/Develop New Audit Equipment and Procedures
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