Ranomang 1 & 3

SECTION 2: Hazards identification

OSHA The term “hazardous” should be interpreted as a term required and defined in the OSHA Hazard Communications Standard (29 CFR Part 1910.1200) and does not necessarily imply the existence of any hazard. These products as shipped are stable, nonhazardous, nonflammable, nonexplosive and nonreactive. Hazardous Decomposition Products Exposure limit: Welding fumes and gases cannot be classified simply. The composition and quantity of both are dependent upon the metal being welded, the process, procedure and electrodes used. Other conditions that also influence the composition and quantity of the fumes and gases to which workers may be exposed include: coatings on the metal being welded (such as paint, plating, or galvanizing), the number of welders and the volume of work area, the quality and amount of ventilation, the position of the welder’s head with respect to the fume plume, as well as the presence of contaminants in the atmosphere (such as chlorinated hydrocarbon vapors from cleaning and degreasing activities.) When the electrode is consumed, the fume and gas decomposition products generated are different in percent and form from the ingredients listed in Section II. Fume and gas decomposition products and not the ingredients in the electrode, are important. The concentration of a given fume or gas component may decrease or increase by many times the original concentration in the powder. Also, new compounds not in the electrode may form. Decomposition products of normal operation include those originating from the volatilization, reaction, or oxidation of the material shown in Section II, plus those from the base metal and coating, etc., as noted above. Reasonably expected fume constituents of these products would include complex oxides of iron, manganese and silicon; secondarily complex oxides of chromium, nickel, molybdenum, titanium, calcium, sodium and potassium. The present OSHA PEL for hexavalent chromium (CR+6) is 0.05 mg/m3 that will result in a significant reduction from the 5mg/m3 general welding fume (NOC) level. The limit of 0.05 mg/m3 for hexavalent chromium in these electrodes comes from the limit shown in OSHA table Z-2, which is for 0.1 mg of Cr03 + which calculates to 0.05 mg of Cr+6/m3. OSH PEL for nickel metal and soluble compounds is 1 mg/m3. The ACGIH TLV for nickel metal is 1 mg/m3 and TLV for soluble compounds is 0.1 mg/m3. These limitations will also result in a significant reduction from the 5 mg/m3 general welding fume (NOC) level. Gaseous reaction products may include carbon monoxide and carbon dioxide. Ozone and nitrogen oxides may be formed by the radiation from the arc. One recommended way to determine the composition and quantity of fumes and gases to which workers are exposed is to take an air sample inside the welder’s helmet if worn or in the worker’s breathing zone. See ANI/AWS FI.1 “Method for Sampling Airborne Particles Generated by Welding and Allied Processes” available from the American Welding Society, P.O. Box 351040, Miami, FL 33135. WARNING This product may contain or may produce a chemical known to the State of California to cause cancer. (California Health & Safety Code 25249.5 et seq.) Page | 1