Otomotiv Sprey Boya Kabini: NFPA 33, 0.5 m/s Booth Velocity ve Class I Div 1

Otomotiv fabrikalarinda sprey boya kabini (spray booth) solvent bazli boya kullanir. Solventin buharlari LFL'i asar ise patlama olur. NFPA 33 0.5 m/s booth velocity (ortama akis hizi), 25 percent LEL shutdown ve Class I Div 1 (Zone 1) elektrik zonlama kurallarini verir. OEM boya shoplari ve karoser onarim merkezleri ayni sartlara tabidir.

Booth Airflow Tasarimi

• Face velocity: 0.5 m/s (100 fpm) min
• Downdraft booth: Floor grating exhaust
• Semi-downdraft: Asymmetric flow
• Cross-draft: Old style, oneri degil
• Plenum: Makeup air ust, pozitif basinc

LEL Izleme

• Solvent: Toluen, xylen, MIBK
• LFL: Toluen percent 1.2, xylen percent 1.0
• Setpoint: 10 percent LEL alarm, 25 percent shutdown
• Detektor: Catalytic bead, exhaust duct
• Kalibrasyon: 6 ay span gas (metan)

Class I Div 1 (Zone 1) Zonlama

• Booth ici: Class I Div 1 (Zone 1)
• Booth 1 m disi: Div 2 (Zone 2)
• Makine: Ex d/Ex e motor
• Aydinlatma: Explosion-proof LED
• Static: Grounding + bonding, 10^6 ohm max

Yangin Koruma

• Sprinkler: K=80, Extra Hazard 2
• Dry chemical: ABC 30 kg booth icinde
• Exhaust stack: 3 m araliklı flame arrestor
• Filter bank: Overspray yakma paneli
• Manual alarm: Push station booth disinda

Waterborne Boya Gecisi

• Su-bazli boya: VOC dusuk, LEL yok
• Solvent reduksiyonu: EPA/REACH uyum
• Booth degisiklik: Kurutma/flash zonu uzar
• Elektrostatik bell applicator: ESD onlem
• Enerji: Degisim sonrasi havalandirma yuzde 50 dusuk

Boya Kabini MEP Calc ile

MEP Calc sprey boya kabini debi (face velocity 0.5 m/s), LEL setpoint, Class I zonlama ve NFPA 33 uyum hesaplamalarini yapar.

MEP Calc'i App Store'dan indir