When calculating the concentration of fume caused by the welding process in the form of particles included in business establishments, both 21 of, it was located between the 0.018 and to 0.145 were 0.061 which nowhere exceed standard of American Conference Governmental Industrial Hygiene (ACGIH) that specify the limited exposure to accept. (TLV-TWA) from welding, no more than 5 mg / m3 (picture 3).
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