Air Monitoring Applications

Welding Processes - Air Monitoring Products

Welding is the process by which pieces of metals or thermoplastics are combined or joined by applying heat, pressure, or a combination of both. It is one of the oldest industrial processes in practice today. The earliest examples of welded metals date back to the Bronze and Iron Ages. Welding processes occur in approximately 2% of industrialized working populations; and workers who perform welding tasks are at risk for exposure to various fumes and gases including carbon monoxide, nitrogen dioxide, ozone; also, metal fumes from zinc, cadmium, hexavalent chromium, and mercury among others at dangerous levels. Studies show that welders are at risk for developing lung-related ailments such as bronchitis, pulmonary infections such as pneumonia, and lung cancer.

There are many types of welding processes but the most commonly practiced are Shielded Metal Arc Welding (SMAW) and Gas Metal Arc Welding (GMAW), which comprise roughly 70% of all welding methods. The most commonly welded metals are carbon steel, stainless steel, and aluminum. Exposure to hazardous fumes and gases depend on the welding method and materials involved, the composition of the welding rod (electrode), filler and base metals, paints and coatings being welded, and area ventilation.

Although personal protective equipment and controls are mandated by OSHA and NIOSH for welding processes, welders remain at risk for occupationally-induced lung cancer and other health-related conditions.


Did you know? OSHA has confirmed the effective date of June 15, 2010, for the direct final rule requiring employers to notify their workers of all hexavalent chromium exposures. The rule revises a provision in OSHA's Hexavalent Chromium standard that required workers be notified only when they experienced exposures exceeding the permissible exposure limit.

Types of Sampling
Indoor Air
Personal sampling
Ambient Air

Sampling Media
Sorbent Tubes
Passive Sampling Devices
Thermal Desorption Tubes
Filters

Contaminants of Interest:

Welding Gases
  • Ozone
  • Nitrogen Oxides
  • Carbon Monoxide & Carbon Dioxide
Metals & Metal Fumes 
Metals
  • Stainless Steel, Carbon Steel, and Zinc
  • Mercury
  • Nickel
  • Lead
  • Chromium-Hexavalent
Metal Fumes
  • Oxides- Iron, Zinc, and Aluminum
  • Cadmium
  • Manganese
  • Magnesium
Other Common Contaminants in Welding
  • Paint & Coating Residues
  • Isocyanates
  • Chlorinated Hydrocarbon Solvents
  • Phosgene
  • Fluorides
  • Asbestos
  • Arsenic

Air Sampling Media by Regulatory Method
Method Contaminants of Interest Sampling Media
OSHA
OSHA 42 Diisocyanates Filter – Glass Fiber Filter Coated w/1-2PP (20811/20812-U)
New! Dry Sampler – ASSET EZ4-NCO Dry Sampler (5027-U/5028-U)
OSHA 47 Methylene Bisphenyl Isocyanate (MDI) Filter – Glass Fiber Filter Coated w/1-2PP (20811/20812-U)
New! Dry Sampler – ASSET EZ4-NCO Dry Sampler (5027-U/5028-U)
OSHA 61 Phosgene Sorbent Tube – 2-HMP on XAD-2 (20231)
OSHA 1006 Arsenic, Cadmium, Cobalt, Copper, Lead & Nickel Passive Sampling-radiello Aldehydes-(RAD165) / DSD-DNPH (28221-U)
OSHA ID 103 Chromic Acid and Chromates (Hexavalent Chromium) Filter- PVC (23387)
OSHA ID 105 Inorganic Arsenic in Workplace Atmospheres Filter – MCE filter + support pad c/w Na2CO3 (Custom-Inquire)
OSHA ID 110 Fluoride (F- and HF) in Workplace Atmospheres Filter – MCE filter + support pad c/w Na2CO3 (Custom-Inquire)
OSHA ID 121 Metal and Metalloid Particulates (Pb, Cr, & Cd) Filter – MCE (23381)
OSHA ID 125G Metal and Metalloid Particulates (Pb, Cr, & Cd) Filter – MCE (23381)
OSHA ID 140 Mercury Vapor in Workplace Atmospheres Passive or active sampling device p/w Hydrar® or Hopcalite
OSHA ID 145 Mercury, Particulate Filter – MCE (23381)
OSHA ID 160 Asbestos in Air Filter – MCE (23380-U)
OSHA ID 172 Carbon Dioxide in Workplace Atmospheres Gas Sampling Bag – Tedlar 5L (24655)
OSHA ID 182 Nitrogen Dioxide in Workplace Atmospheres Sorbent Tube – TEA molesieve (Custom-Inquire)
Passive – Radiello (RAD166 w/ RAD1201)
OSHA ID 189 Cadmium Filter – MCE (23381)
OSHA ID 190  Nitric Oxide in Workplace Atmospheres Sorbent Tube – TEA molesieve w/oxidizer – ORBO-76 (20826-U)
OSHA ID 209 Carbon Monoxide in Workplace Atmospheres Direct Reading – Detector Tube (28166-U & 28167-U)
OSHA ID 210 Carbon Monoxide in Workplace Atmospheres Aluminized Gas Sampling Bag – 2 to 5 L
OSHA ID 214 Ozone in Workplace Atmospheres Filter – Nitrite Impregnated Glass Fiber Filter (IGFF) in 2-pc cassette (Custom-Inquire)
Passive – Radiello 172 (RAD172 / RAD1201)
NIOSH
NIOSH 5521 Isocyanates Impinger (20270-U)
New! Dry Sampler – ASSET EZ4-NCO Dry Sampler (5027-U/5028-U)
NIOSH 5522 Isocyanates Impinger (20270-U)
New! Dry Sampler – ASSET EZ4-NCO Dry Sampler (5027-U/5028-U)
NIOSH 6009 Mercury Sorbent Tube-6 mm OD x 4 mm ID, 7 cm L w 200 mg Hopcalite
NIOSH 6014 Nitrogen Dioxide Sorbent Tube – TEA molesieve (Custom-Inquire)
Passive – Radiello (RAD166 w/ RAD1201)
NIOSH 7024 Chromium and Compounds Filter – MCE (23381)
NIOSH 7048 Cadmium and Compounds Filter – MCE (23381)
NIOSH 7300 Elements (Pb, Cd, & Cr) Filter – MCE (23381)
NIOSH 7400 Asbestos Fibers by PCM Filter – MCE (23380-U)
NIOSH 7402 Asbestos Fibers by TEM Filter – MCE (23380-U)
NIOSH 7600 Chromium Hexavalent (Chromic Acid and Chromates) Filter- PVC (23387)
NIOSH 7604 Chromium Hexavalent (Chromic Acid and Chromates) Filter- PVC (23387)
NIOSH 7605 Chromium Hexavalent by ICP Filter- PVC (23387)
NIOSH 7900 Arsenic and Compounds, as Arsenic (except AsH3 & As2O3) Filter – MCE filter + support pad c/w Na2CO3 (Custom-Inquire)

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