reasons for air sampling
TRANSCRIPT
Reasons for Air sampling
Alan GilbertBSRIA Instrument Solutions - General Manager
Why do we need to sample air ?
Chemicals
Smoke
Particles Size Perspective
Human Hair ± 150 µmVisible Airborne Debris 25 µm
Heavy Atmospheric Dust 10 µm
Avg. Atmospheric Dust 5-10 µm
Ultrafine Particles < 0.1 µm
Metallic Fumes 0.3-1 µm
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Typical Particle Sizes
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Airborne Hazards
Gases & very small
particles can reach
the deepest areas
of the lungs
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(30µ)
(10µ) (4µ)
Reasons for Air Sampling
+ Health Protection+ Environmental Protection+ Product Protection+ Process Protection+ Protection from compensation claims+ To comply with legislations
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Health Protection
+ Protect people's Health and Safety by ensuring risks in the changing workplace are properly controlled.
+ Protect against expensive compensation claims
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Environmental Protection
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Product Protection
+ Customer complaints
+ Health issues
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Process Protection
+ Effects production
+ Downtime
+ Costs time/money
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Legislations involved
What are the Legal Obligations?
‘The employer has an overriding duty
and first priority to consider how to
prevent employees being exposed to
substances hazardous to health
by All Routes.’
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Legislation
Control
of
Substances
Hazardous to
Health
Approved
Code
Of
Practice
COSHH ACoP
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COSHHwww.hse.gov.uk/coshh
+ Law which requires employers to control substances hazardous to health
+ List of industries+ Specific work tasks+ Specific substances hazardous to health+ WEL’s - TWA and STEL
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Workplace exposure limits (WEL)+ Exposure to a substance is uptake into the body+ Occurs by breathing, skin, swallowing and injection+ 500 substances have listed WEL in EH40/2005+ The only way to know if you are under the WEL is by monitoring
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Industry Examples
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Construction
Risk of exposure to:
+ silica dust – created when working on silica-containing materials like concrete, mortar and sandstone (also known as respirable crystalline silica or RCS);
+ Wood dust + Lower toxicity dusts+ Used for OH reasons but also to prove dust from job is
not affecting nearby areas such as school/hospital etc
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IndustryRisks of particles/dusts/mists from:
+ Welding – dust from gouging and abrasive blasting+ Engineering – dusts from mechanical cutting, shaping
and abrasive blasting+ Metal working – mists in metal working fluids, lubricant
oil mists, machining fluids+ Vehicle/object paint spraying+ Paint stripping processes
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Woodworking
Risk of exposure to
+ Hardwood and softwood dusts+ Dusts from hardboard, MDF, Plywood+ Adhesives, paints, varnishes
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Indoor air quality
+ Not only looking for dusts in this environment+ Temperature+ Humidity+ CO2+ CO+ Nanoparticles
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Fenceline monitoring & Fugitive emissions+ Monitor around a company’s perimeter
+ Real time continuous monitoring
+ Construction sites
+ Environmental pollution (e.g. power stations)
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Environmental Monitoring+ Carried out by local authorities/research groups/local
communities
+ Perform real time monitoring – results uploaded to central network via modem link
+ Use environmental accessories such as enclosures/heated inlet to achieve accurate results
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Environmental Monitoring Equipment+ Environmental Dusttrak+ Built in heated inlet (mitigate humidity effects)+ Automatic zeroing + Field replaceable longer life pump+ Netronix cloud data management system
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Questions?
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