personal air sampling
DESCRIPTION
Personal Air Sampling. Introduction & History. Goal of Personal Sampling. Collect an air sample representative of a worker’s Breathing Zone. Representative Air Sample. Conducted over the entire work shift Collects air around the worker’s face Doesn’t get in the way of doing the job - PowerPoint PPT PresentationTRANSCRIPT
Personal Air SamplingPersonal Air SamplingIntroduction & History
Goal of Personal SamplingGoal of Personal Sampling
• Collect an air sample representative of a worker’sBreathing Zone
Representative Air SampleRepresentative Air Sample
• Conducted over theentire work shift
• Collects air aroundthe worker’s face
• Doesn’t get in the wayof doing the job
• Provides a reliableflow rate & volume
Personal Sampling History Personal Sampling History
The first personal air samplers were developed for sampling coal mine workers for coal dust exposure in underground coal mines.
Timeline: US AgenciesTimeline: US Agencies
• 1910 Bureau of Mines• 1913 Department of Labor• 1915 Public Health Service• *************************• 1969 MSHA• 1970 OSHA & EPA
Earliest SamplingEarliest Sampling
• The earliest personal monitoring was done with a manual pump, hand-operated by a second person
• The pump was developed by the US Bureau of Mines in 1937, and collected the dust in a water medium using impingers.
First Battery Operated Personal First Battery Operated Personal Monitoring PumpsMonitoring Pumps
• In 1957 the first battery operated personal pumps were used, made under contract for the US Bureau of Mines
• Sampling is now collected onto filters, using size selective cyclones
Personal Pump HistoryPersonal Pump History
• 1937- Hand operated pump for US coal mines• 1957 – First battery operated personal monitoring pumps
used in US coal mines• 1962 – Commercial pumps first sold in US & Europe• 1973 – Low flow pump & sorbent tubes• 1975 – Constant flow pumps• 1976 – High/Low flow combo pumps• 1980 – Digital calibrators• 1982 – High/Low/Constant Flow pump
Personal Air Sampling PumpsPersonal Air Sampling Pumps
• Personal Pump High Flow• Flow rates from 1 to 5 LPM• Examples: Lead, Asbestos, Dust• Accessories: Filters, Cyclones, Impingers
MSHA 30 CFR Part 74MSHA 30 CFR Part 74Coal Dust Sample RequirementsCoal Dust Sample Requirements
• Size and weight limitations• Air exhausts inside the case• On-off switch & flow control protected• Pulsation control• Battery operated & charged in place• Visual flow rate indicator• Flow control to +/- 5%
Personal High Flow PumpPersonal High Flow Pump
Personal Air Sampling PumpsPersonal Air Sampling Pumps
Personal Pump Low Flow• Flow Rates from 20 to 300cc/min • Examples: Hydrocarbon Solvents
(Benzene) Chlorinated Solvents (Methylene Chloride) & Alcohols
• Accessories: Sorbent Tubes (Charcoal Tubes)
Personal Low Flow PumpPersonal Low Flow Pump
Personal Air Sampling PumpsPersonal Air Sampling Pumps
Constant Flow Control• Works like the cruise control on a car• Senses when the flow rate is trying to drop and speeds
up the pump• Maintains the flow rate at ± 5% of set flow
Personal Air Sampling PumpsPersonal Air Sampling Pumps
Multi-flow Low Flow Pumps• Constant pressure control allows two to four
simultaneous samples using special manifolds• A constant low pressure level is maintained in the
connection tubing• Flow rate is controlled with a needle valve on each tube
holder
Universal Tube Holder SystemUniversal Tube Holder System
Constant Flow vs. Constant Flow vs. Constant PressureConstant Pressure
Sampling AccessoriesSampling Accessories
Cyclone SamplersImpingers
Charcoal Tubes
Filter Cassettes
Sorbent TubesSorbent Tubes
Three-piece Filter CassetteThree-piece Filter Cassette
Personal Cyclone SamplerPersonal Cyclone Sampler
Calibration Setup with Calibration Setup with Filter CassetteFilter Cassette
Air Sampling Pump CalibrationAir Sampling Pump Calibration
Primary Air Flow CalibratorPrimary Air Flow Calibrator
Measures airflow using a
Measured volume
Secondary Air Flow CalibratorSecondary Air Flow Calibrator
Gauge to measure flow.
Requires comparative validation
NIST TraceableNIST Traceable
Documented trail to National Institute for Science & Technology
Cyclone Calibration JarCyclone Calibration Jar
Multi-flow CalibrationMulti-flow Calibration
Back PressureBack Pressure
Measuring Back PressureMeasuring Back Pressure
IH TimelineIH Timeline
• 1939 – AIHA founded• 1970 – OSHA, NIOSH, EPA• 1984 – Asbestos Act• 1990s – Industry downsizing• 1999-2000 – Slow industry recovery
AIHA MembershipAIHA Membership
• 1939 – 160 members• 1970 – 1650 members• 1980 – 5000 members• 1985 – 6300 members• 1991 – 10,000 members• 1996 – 12,500 members• 2011 - 10,240 members
Personal Pump TrendsPersonal Pump Trends
• 1960s – Make it work• 1970s – Make it smaller• 1980s – Add features• 1990s – Better value• 2000s – Make it smarter
www.Sensidyne.comwww.Sensidyne.com 800-451-9444 / 727-530-3602