ṁធ૞ᬺ႐ߦ߅ߌࠆ৻㉄ൻ὇⚛Ớᐲ᷹ቯߦኻߔࠆឭ⸒ዊ ᎑   ⚐ ṁធᤨߦߪ㊄ዻ☳ߓࠎ㧔ࡅࡘ࡯ࡓ㧕߫߆ࠅߢߥߊ⒳‫᦭ߩޘ‬ኂ߽ࠟࠬหᤨߦ⊒↢ߒ㧘ߘࠇߦࠃࠆਛᲥ੐᡿߇ߒ߫ߒ߫⿠߈ࠆ㧚ߒ߆ߒ㧘ṁធ૞ᬺߩഭ௛ⴡ↢⺖㗴ߪࡅࡘ࡯ࡓߩ߫ߊ㔺ኻ╷߇ਛᔃߢ޽ߞߚߚ߼㧘᦭ኂࠟࠬߩ໧㗴ߪߐ߶ߤ㊀ⷞߐࠇߡ߅ࠄߕ㧘᷹ቯᴺߦ㑐ߔࠆ⎇ⓥႎ๔߽࿖ౝߢߪᧂߛ௖ዋߢ޽ࠆ㧚ߘߎߢᧄႎߢߪ὇㉄ࠟࠬࠕ࡯ࠢ
ṁធߦ઻ߞߡ⊒↢ߔࠆ৻㉄ൻ὇⚛ࠟࠬߦ⌕⋡ߒ㧘࿖ౝᄖߩⷙᩰ߇ቯ߼ߡ޿ࠆ߫ߊ㔺Ớᐲ᷹ቯᴺࠍෳ⠨ߦ㧘หࠟࠬߩㆡಾߥࠨࡦࡊ࡝ࡦࠣᣇᴺߩ޽ࠅᣇߦߟ޿ߡᬌ⸛ࠍ⹜ߺߚ㧚ታ㛎ߩ⚿ᨐ㧘ṁធ૞ᬺ⠪߇Ᏹ↪ߔࠆㆤశ଻⼔㕙ߩౝ஥ߣᄖ஥ߢߪ৻㉄ൻ὇⚛Ớᐲߦ㗼⪺ߥᏅ⇣ࠍ↢ߓࠆߎߣ߇⏕⹺ߐࠇ㧘৻㉄ൻ὇⚛ߩ߫ߊ㔺Ớᐲ᷹ቯߦ߅޿ߡ߽㕙૕ౝㇱߢߩࠨࡦࡊ࡝ࡦࠣ߇㊀ⷐਇนᰳߢ޽ࠆߎߣ߇⸽᣿ߐࠇߚ㧚ߚߛߒ㧘૞ᬺ⠪߇ኻ㕙ᣇะ߆ࠄᓸᒙߥ᳇ᵹࠍฃߌࠆࠃ߁ߥ႐วߦ߅޿ߡߪ㧘㕙૕ౝᄖߢ᣿ࠄ߆ߥỚᐲᏅߪ⹺߼ࠄࠇߥ߆ߞߚ㧚ࠠ࡯ࡢ࡯࠼ ṁធ㧘৻㉄ൻ὇⚛㧘୘ੱࠨࡦࡊ࡜࡯㧘߫ߊ㔺Ớᐲ㧚

1 ߪߓ߼ߦ

㕙ౝᄖߢ⿠߈ᓧࠆ৻㉄ൻ὇⚛ࠟࠬߩỚᐲᏅࠍ᷹ቯߒߡ㧘὇㉄ࠟࠬࠕ࡯ࠢṁធߢߪ㧘㊄ዻ☳ߓࠎ㧔ṁធࡅࡘ࡯ࡓ㧕߫߆ࠅߢߥߊ㧘ࠝ࠱ࡦ㧘⓸⚛㉄ൻ‛㧘᦭ኂశ✢ߥߤ᭽‫ޘ‬ห᷹ࠟࠬቯᤨߦㆡ↪ߐࠇࠆ࿖ౝᄖߩⷙᩰߩᱜᒰᕈࠍᬌ⸽ߒߚ㧚ߥ᦭ኂ࿃ሶ߇หᤨߦ⊒↢ߒ㧘૞ᬺ⠪ߪߎࠇࠄోߡߦ߫ߊ
2 ⵝ⟎෸߮ታ㛎ᣇᴺ㔺ߔࠆߎߣߦߥࠆ㧚৻㉄ൻ὇⚛߽ห૞ᬺߦ߅޿ߡ߫ߊ㔺߇໧㗴ߣߥࠆ᦭ኂ‛⾰ߩ৻ߟߢ㧘ࠪ࡯࡞࠼ࠟࠬߣߒߡ૶଻⼔㕙૕ߩౝᄖߦ߅ߌࠆ৻㉄ൻ὇⚛ߩỚᐲ᷹ቯߦߪ㧘↪ߐࠇࠆ὇㉄ࠟࠬ߇ࠕ࡯ࠢߩ㜞ᾲࠍฃߌߡᄌᚑߔࠆ߽ߩ⿒ᄖ✢ๆ෼ᣇᑼߩ৻㉄ൻ὇⚛ࡕ࠾࠲࡯㧔ᩊ↰⑼ቇ(ᩣ)ߢ޽ࠆ㧚ᓥ᧪㧘ṁធ૞ᬺߦ߅ߌࠆഭ௛ⴡ↢⺖㗴ߪࡅࡘ࡯⵾㧧Model CO-2㧕ࠍ૶↪ߒߚ㧚ታ㛎ౕེߥߤߩ㈩⟎⁁ᴫࡓߩ߫ߊ㔺ኻ╷߇ਛᔃߢ޽ߞߚ߇㧘⃻႐ߢߪ৻㉄ൻ὇⚛

ࠍ࿑ 1 ߦ␜ߔ㧚ߦࠃࠆਛᲥ੐᡿߽ߒ߫ߒ߫⊒↢ߒߡ߅ࠅ㧘ࡅࡘ࡯ࡓߣห᭽ߦ▤ℂ෸߮ኻ╷ࠍⴕ߁ᔅⷐ߇޽ࠆ㧚৻⥸ߦ㧘ṁធ૞ᬺ႐ߦ߅ߌࠆ᳇ਛ᦭ኂ‛⾰ߩⅣႺỚᐲߪ㧘߫ߊ㔺ỚᐲߣᲧߴ㗼⪺ߦૐߊߥࠆ௑ะ߇޽ࠆ㧚ߘߩ৻㉄ൻ὇⚛ࡕ࠾࠲࡯ߚ߼㧘޿ࠊࠁࠆ̌႐ߩ᷹ቯ̍ࠍਥ૕ߣߔࠆᚒ߇࿖․᦭ߩ
૞ᬺⅣႺ᷹ቯᴺߢߪ૞ᬺ⠪ߩ߫ߊ㔺ታᘒ߇චಽߦ෻ᤋߐ
ࠇߕ㧘ㆡᱜߦኻಣߢ߈ߥ޿ߣ޿߁໧㗴߇⊒↢ߔࠆ㧚ߘߎߢ㧘୘ੱࠨࡦࡊ࡜࡯ߦࠃࠆ߫ߊ㔺Ớᐲ᷹ቯࠍዉ౉ߔࠆᔅⷐ߇↢ߓࠆߩߛ߇㧘৻⥸⊛ߥ߫ߊ㔺Ớᐲ᷹ቯᴺߢߪṁធ૞ᬺ⠪ߩ߫ߊ㔺Ớᐲࠍᱜ⏕ߦ᷹ࠇߥ޿ߎߣ߇એ೨߆ࠄᜰ៰ߐࠇߡ޿ࠆ㧚ㅢᏱ㧘ṁធ૞ᬺ⠪ߪࠕ࡯ࠢ߆ࠄ⊒ߔࠆᒝ޿శ✢߿ࠬࡄ࠶࠲࡯߆ࠄ㗻㕙ࠍ଻⼔ߔࠆߚ߼ṁធ↪ㆤశ଻⼔㕙ࠍⵍࠆߩߢᔅὼ⊛ߦ๭ๆၞߪߎߩ଻⼔㕙ߩౝ஥ߦⷒࠊࠇࠆ߇㧘৻⥸⊛ߥ୘ੱࠨࡦࡊ࡜࡯ߪ㕙૕ߩᄖㇱ㧔㧩๭ๆၞߩᄖ㧕ߦⵝ⌕ߔࠆ߆ࠄߢ޽ࠆ㧚ߘߎߢ㧘࿖㓙ⷙᩰࠨࡦࡊ࡝ࡦࠣ૏⟎㧔ISO 10882-1㧘ISO 10882-2㧕߿ᣣᧄᎿᬺⷙᩰ㧔JIS Z3950㧘JIS Z 3952㧕߇ቯ߼ࠆṁធ૞ᬺ⠪ߩ୘ੱ߫ߊ㔺Ớᐲ᷹ቯᴺߢߪ㧘ࠨࡦࡊ࡝ࡦࠣ૏⟎ࠍ଻⼔㕙ߩౝ஥ߦߔࠆࠃ߁᣿⸥ߒߡ޿ࠆ߇㧘ߎࠇߪ଻⼔㕙ౝᄖߦࡅࡘ࡯ࡓ߅ࠃ߮ࠟࠬ㧔ࠝ࠱ࡦ㧘⓸⚛㉄ൻ‛㧕ߩ㗼⪺ߥỚᐲᏅ߇ሽ࿷ߔ࿑㧝 ৻㉄ൻ὇⚛ࡕ࠾࠲࡯ߣ࠳ࡒ࡯૞ᬺ⠪ߩ㈩⟎⁁ᘒ㧚 ࠆߎߣࠍ᣿߆ߒߚㆊ෰ߩ⎇ⓥႎ๔ 1-7㧕߇ᩮ᜚ߦߥߞߡ޿ߎߩ࿑ߢߪ㧘৻㉄ൻ὇⚛ࠍ଻⼔㕙૕ߩᄖㇱ㧔૞ᬺ⠪ߩฝ⢋਄㧕ߦߡࠨࡦࡊ࡝ࡦࠣߒߚ㓙ߩ⁁ᘒࠍ౮ߒߡ޿ࠆ㧚ࠆ㧚ߐߡ㧘ᒰ⎇ⓥߢ⌕⋡ߒߚ৻㉄ൻ὇⚛߽㕙૕ౝᄖߢ᦭ᗧߩỚᐲᏅࠍ↢ߓࠆߎߣ߇㘃ផߐࠇࠆߩߢ㧘߫ߊ㔺Ớᐲߩ᷹ቯߦ㓙ߒߡߪ਄⸥ߩⷙᩰߦᓥ߁ߩ߇ㆡᒰߣ੍ᗐߐࠇࠆታ㛎ߦ߅ߌࠆṁធߦߪ⥄േṁធࡠࡏ࠶࠻㧔␹ᚭ⵾㍑

߇㧘ᧄᒰߦ৻㉄ൻ὇⚛ߢ߽ỚᐲᏅ߇↢ߓࠆߩ߆㧘ᬌ⸽ߪ㧔ᩣ㧕⵾㧧ARCMAN-RON㧕ࠍ↪޿㧘270 m270 m

ᧂߛߐࠇߡ޿ߥ޿ࠃ߁ߢ޽ࠆ㧚ߘߎߢᧄႎߢߪ㧘ታ㛎ቶ

12 m ࠨࠗ࠭ߩエ㍑Უ᧚਄ߦ㧘એਅߩ᧦ઙߦߡࡆ࡯࠼࡮ౝߦ⸳ߌߚṁធࡠࡏ࠶࠻߅ࠃ߮࠳ࡒ࡯૞ᬺ⠪ߣ৻㉄ൻ὇ࠝࡦ࡮ࡊ࡟࡯࠻ṁធࠍⴕߞߚ㧚 ṁធ㔚ᵹ㧦100 㧭߅ࠃ߮ 300 㧭⚛Ớᐲࡕ࠾࠲࡯╬ࠍ↪޿㧘὇㉄ࠟࠬࠕ࡯ࠢṁធᤨߦ଻⼔－ 75 －

労働安全衛生総合研究所特別研究報告

JNIOSH-SRR-NO.41(2011) ṁធㅦᐲ㧦30 cm/minߒߡⴕߞߚ㓙ߩᐞ૗ᐔဋ୯ߢ⴫⸥ߒߡ޽ࠆ㧚ߎࠇࠃࠅ㧘 㔚ᭂ᧚㧦1.2 m Ǿ ࠰࡝࠶࠼ࡢࠗࡗ㧔JIS Z 3312㧕

ή㘑⁁ᘒਅߦ߅޿ߡߪ㧘㕙૕ౝㇱߩ৻㉄ൻ὇⚛Ớᐲߪ㕙 ࠪ࡯࡞࠼ࠟࠬ㧦὇㉄ࠟࠬ 20 liter/min૕ᄖߩỚᐲߩ 12㧑㨪23㧑ߣߥࠅ㧘ਔ⠪㑆ߩᏅߪ⛔⸘⊛ߦ ṁធᆫ൓㧦ਅะ߈ᆫ൓᦭ᗧߢ޽ࠆߎߣ߇⏕⹺ߐࠇߚ㧚ߎࠇߪ㧘଻⼔㕙ࠍ⌕↪ߔ ࠕ࡯ࠢᤨ㑆㧦90 ⑽ࠆߎߣߦࠃࠅ৻㉄ൻ὇⚛ߩ߫ߊ㔺Ớᐲࠍૐᷫߐߖࠆലᨐ ਄⸥ߩṁធࡠࡏ࠶࠻ߣ㧘ṁធ↪ㆤశ଻⼔㕙ࠍⵍߖߚ࠳߇޽ߞߚߎߣࠍᗧ๧ߔࠆ㧚ߒ߆ߒ㧘࠳ࡒ࡯૞ᬺ⠪߇ᱜ㕙ࡒ࡯૞ᬺ⠪㧔਄ඨりߩߺߩ╬りᄢࡑࡀࠠࡦ㧕ࠍታ㛎ቶౝ߆ࠄ᳇ᵹࠍฃߌࠆ⁁ᴫਅߢߪ㧘㕙૕ౝᄖߩ৻㉄ൻ὇⚛Ớߦㆡᒰߦ㈩⟎ߒߡ㧘↢りߩṁធ૞ᬺ⠪ߦࠃࠆ૞ᬺࠍᮨߔᐲߦᏅߪ⹺߼ࠄࠇߥ߆ߞߚ㧚ߎࠇߪᕟࠄߊ㧘㕙૕ߣ㗻㕙߽ߩߣߒߚ㧚Უ᧚⴫㕙ਛᄩㇱߣ࠳ࡒ࡯૞ᬺ⠪๭ๆၞߣߩਅㇱߣߩ㑆ߦߢ߈ߚ㓗㑆ࠍㅢߒߡ㧘┙ߜ᣹ߞߡߊࠆ৻㉄〒㔌ߪ 50 cm ߣߒߡ޿ࠆ㧚৻㉄ൻ὇⚛ࡕ࠾࠲࡯㧔ᧄ૕㧕ൻ὇⚛ࠍ᳇ᵹ߇᛼ߒㄟ߻ᒻߣߥࠅ㧘⚿ᨐ⊛ߦ㕙૕ౝߩ৻ߪ࠳ࡒ࡯૞ᬺ⠪ߩ⣁ߦ⟎߈㧘ߎࠇߦࡈࠖ࡞࠲࡯࡮ࠞ࠮࠶㉄ൻ὇⚛Ớᐲࠍ᛼ߒ਄ߍߚ߽ߩߣ⠨߃ࠄࠇࠆ㧚ᓥߞߡ㧘࠻ઃ߈ߩࠨࡦࡊ࡝ࡦࠣ࡮࠴ࡘ࡯ࡉࠍߟߥ޿ߢᚲቯ૏⟎߆㕙૕⌕↪ߦࠃࠆ߫ߊ㔺ૐᷫലᨐߪ㧘ᄖㇱ⁁ᴫߦᏀฝߐࠇ

ࠄࠨࡦࡊ࡝ࡦࠣ߇ⴕ߃ࠆࠃ߁ߦߒߚ㧚ࠨࡦࡊ࡝ࡦࠣ૏⟎ࠆਇ⏕ታߥ߽ߩߢ޽ࠅ㧘ߘࠇ᡿㧘㕙૕ᄖỚᐲ߆ࠄౝㇱỚߪ㧘(1) ࠳ࡒ࡯૞ᬺ⠪ߩ๭ๆၞౝ㧧଻⼔㕙૕ߩౝ஥ߢ㧘ᐲࠍ੍᷹ߔࠆߎߣ߽㧘৻ቯߩ๭ๆ଻⼔ౕ⊛ലᨐࠍᦼᓙߔ࠳ࡒ࡯ߩญߩฝ┵߆ࠄ 5 cm એౝߩㇱ૏㧚 (2) ࠳ࡒ࡯ࠆߎߣ߽࿎㔍ߢ޽ࠆߎߣ߇᣿߆ߐࠇߚ㧚૞ᬺ⠪ߩ๭ๆၞᄖ㧧࠳ࡒ࡯ߩฝ⢋਄ߢ㧘଻⼔㕙૕ߩᄖ஥ ᰴߦ㧘㕙૕ౝߦ߅ߌࠆ৻㉄ൻ὇⚛Ớᐲߩ⍍㑆ᦨᄢ୯ࠍߦ૏⟎ߔࠆ㧚 ߩ 2 ▎ᚲߣߒߚ㧚৻㉄ൻ὇⚛Ớᐲߩ᷹ቯ᷹ቯߒߚߣߎࠈ㧘ή㘑⁁ᘒਅߢߪ㧘ṁធ㔚ᵹ߇ 100 A ߩ୯ߪ㧘ࠕ࡯ࠢᤨ㑆㧔90 ⑽㑆㧕ਛߩᤨ㑆ᐔဋ୯ߣߒߡ⸥㍳

႐วߢ 58 ppm㧘300 A ߩ႐วߢ 153 ppm ߢ޽ߞߚ㧚৻ߒߚ㧚߹ߚ㧘᳇ᵹߩᓇ㗀ࠍઃടߔࠆታ㛎㧔࿑ 2㧕ߢߪ㧘ᣇ㧘᳇ᵹߩሽ࿷ߔࠆ⁁ᴫਅߦ߅޿ߡߪ㧘ṁធ㔚ᵹ߇ 300 Aߘߩ⊒↢ⵝ⟎ߣߒߡ㧘ࡊ࠶ࠪࡘࡊ࡞ဳ឵᳇ⵝ⟎㧔⥝⎇(ᩣ)ߩ႐วߢ㧘หỚᐲߪ 325 ppm ߦߥߞߚ㧚⴫ 1 ߣ૬ߖ⷗

⵾㧧MS-01㧕↪ߩㅍ㘑࡙࠾࠶࠻ࠍᵹ↪ߒߡ޿ࠆ㧚ߎߩ᳇ࠇ߫᣿ࠄ߆ߥࠃ߁ߦ㧘὇㉄ࠟࠬࠕ࡯ࠢṁធਛߦ߫ߊ㔺ߔᵹߩᄢ߈ߐߪ㧘ࠕ࡯ࠢὐ਄ᣇ 10 cm ૏⟎ߦ߅ߌࠆ㘑ㅦߣࠆ৻㉄ൻ὇⚛ߩᤨ㑆ᐔဋỚᐲߪᣣᧄ↥ᬺⴡ↢ቇળߩ൘๔

ߒߡ 0.3 m/s ߦ⸳ቯߒߚ㧔ψᾲ✢ᑼ㘑ㅦ⸘ߢ⏕⹺㧕㧚ߐߔࠆ⸵ኈỚᐲ㧔50 ppm㧕ࠍਅ࿁ࠆ߽ߩߩ㧘⍴ᤨ㑆ౝߢߪࠄߦ㧘㕙૕ౝㇱߦ߅ߌࠆ৻㉄ൻ὇⚛Ớᐲߩ⍍㑆ᦨᄢ୯ࠍ☨࿖ NIOSH ߩቯ߼ࠆᄤ੗୯㧔200 ppm㧕ࠍ⿥߃ࠆᕟࠇ⸥㍳ߔࠆߚ߼㧘೎ㅜ㧘៤Ꮺဳ৻㉄ൻ὇⚛ࡕ࠾࠲࡯㧔ᣂࠦߩ޽ࠆߎߣ߇␜ߐࠇߚ㧚ࠬࡕࠬ㔚ᯏ(ࢃ⵾㧧Model XC-2200㧕ࠍ૬↪ߒߚ㧚એ਄ࠃࠅ㧘὇㉄ࠟࠬࠕ࡯ࠢṁធਛߦ⊒↢ߔࠆ৻㉄ൻ὇⚛ߪ㧘ṁធࡅࡘ࡯ࡓ߿ࠝ࠱ࡦ㧘⓸⚛㉄ൻ‛ߣห᭽ߦ㧘㕙૕ౝᄖߢᄢ߈ߥỚᐲᏅࠍ↢ߓࠆน⢻ᕈߩ޽ࠆߎߣ߇⏕⹺ߐࠇ㧘߫ߊ㔺Ớᐲࠍᱜ⏕ߦᛠីߔࠆߦߪ㧘೨ㅀߒߚ࿖ౝᄖߩⷙᩰߦೣࠅ㧘଻⼔㕙ౝㇱߢࠨࡦࡊ࡝ࡦࠣߔࠆᔅⷐߩ޽ࠆߎߣ߇␜ߐࠇߚ㧚ᤓ੹㧘৻㉄ൻ὇⚛ߩ߫ߊ㔺Ớᐲ᷹ቯߦ߅޿ߡ⢋਄ࠨࡦࡊ࡝ࡦࠣࠍⴕ߁ᣇᴺ߇ឭ᩺ߐࠇߡ޿ࠆ߇㧘ߎࠇ߇ਇㆡಾߢ޽ࠆߎߣߪ੹࿁ߩ⚿ᨐࠃࠅ᣿ࠄ߆ߥߩߢ㧘೎ߒߡㆱߌࠆߎߣࠍ൘߼ߚ޿㧚ߥ߅㧘৻㉄ൻ὇⚛Ớᐲߩ᷹ቯౕེࠍ଻⼔㕙ߩౝ஥ߦ෼ኈߔࠆߎߣ߇࿎㔍ߥ႐วߪ㧘࿑ 3-1㨪࿑ 3-3 ߦ␜ߔࠃ߁ߥ࠴ࡘ࡯ࡉߦࠃࠆࠨࡦࡊ࡝ࡦ߽ࠣน⢻ߥߩߢෳ⠨ߣߐࠇߚ޿㧚̪ ᧄⓂߪ㧘J Occup Health 㧔␠࿅ᴺੱ ᣣᧄ↥ᬺⴡ↢ቇળ ⧷ᢥ⹹㧕51 Ꮞ 4 ภ 377-379 ࡍ࡯ࠫ 㧔2009 ᐕ㧕ߦឝタߐࠇߚ ‫ޟ‬Laboratory Evaluation of Carbon

࿑ 2 ᳇ᵹߩሽ࿷߇৻㉄ൻ὇⚛ߩỚᐲ᷹ቯߦ෸߷ ߔᓇ㗀ࠍ⺞ߴࠆߚ߼ߩታ㛎㧚᳇ᵹߪ࠳ࡒ࡯૞

Monoxide Exposure in CO2 Arc Welding‫ࠍ ޠ‬๺⸶࡮ᬺ⠪ߩᱜ㕙߆ࠄ㘑ㅦ 0.3 m/s ߢ็߈ઃߌࠆ߽ߩߣߒߚ㧚ୃᱜߒߚ߽ߩߢߔ㧚3 ታ㛎⚿ᨐ߅ࠃ߮⠨ኤ଻⼔㕙૕ߩౝᄖߢ᷹ቯߐࠇߚ৻㉄ൻ὇⚛Ớᐲߩ᷹ቯ⚿ᨐࠍ⴫ 1 㧔ᰴ‫ޘ‬㗁㧕ߦ␜ߔ㧚ߚߛߒ㧘⴫ਛߩᢙ୯ߪోߡ
ᤨ㑆ᐔဋỚᐲߢ޽ࠅ㧘หߓ᧦ઙߢ 12 ࿁ߩ᷹ቯࠍ➅ࠅ㄰

－ 76 －

溶接作業場における一酸化炭素濃度測定に対する提言࿑ 3-1 㕙૕ౝㇱ߆ࠄߩࠨࡦࡊ࡝ࡦࠣᣇᴺߩ଀

࿑ 3-3 㕙૕ౝㇱ߆ࠄߩࠨࡦࡊ࡝ࡦࠣᣇᴺߩ଀       ෳ ⠨ ᢥ ₂
1) Johnson WMS. An investigation into the true
exposure of arc welders by means of simultaneous
sampling procedure. Am.Ind.Hyg.Assoc.J. 1959 ;
20 : 194-196.
2) Alpaugh EL, Phillippo KA, Pulsifer HG. Ventilation
requirement for gas-metal-arc welding versus
coverd-electrodewelding.

Am.Ind.Hyg.Assoc.J.

1968 ; 29 : 551-557.
3) Frank CSJr, Alexander BR. Exposure to iron oxide
fume at arcair and powder-burning operations.
Am.Ind.Hyg.Assoc.J. 1969; 30 : 143-146.
4) Vorpahl KW, Jordan PT, Mathews EJ. Chrome alloy
welding fume study.

Am.Ind.Hyg.Assoc.J. 1976 ;

37 : 566-569.
5) Goller JW, Paik NW. A comparison of iron oxide
fume inside and outside of welding helmets.
Am.Ind.Hyg.Assoc.J. 1985 ; 46 : 89-93.
6) Chung KYK, Carter GJ, Stancliffe JD. Laboratory
evaluation of a protocol for personal sampling of࿑ 3-2 㕙૕ౝㇱ߆ࠄߩࠨࡦࡊ࡝ࡦࠣᣇᴺߩ଀

airborne particles in welding and allied processes.
Appl.Occup.Environ.Hyg. 1999 ; 14 : 107-118.
7) Cole H, Epstein S, Peace J. Particulate and gaseousemission when welding aluminum alloys.
J.Occup.Environ.Hyg. 2007; 4: 678-687.

－ 77 －労働安全衛生総合研究所特別研究報告⴫1ṁធ㔚ᵹ [A]JNIOSH-SRR-NO.41(2011)଻⼔㕙ౝᄖߦ߅ߌࠆ৻㉄ൻ὇⚛Ớᐲ୯ߩᲧセ 㧔 n = 12 㧕    ৻㉄ൻ὇⚛Ớᐲ  [ppm] ᳇ᵹ㕙૕ౝ஥ (CI) ỚᐲᲧ (CO / CI)  㕙૕ᄖ஥ (CO)100

㧙

5.1r5.8

9.9r6.3

1.9300㧙

6.1r7.1

19.0r7.5

3.1300      ٤

14.1r2.2

14.3r3.5

1.0



－ 78 －