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29 CFR 1910.1450 Laboratory Safety Standard. Chemical Hoods Conventional Bypass Auxiliary Air Bypass Re-circulating/Ductless. Non-Chemical Hoods BioSafety Cabinets Laminar Flow Hoods. Chemical Hood Types. Unstable Set- Up Flammable and Toxic Atmospheres. Unsafe Experiment.
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29 CFR 1910.1450 Laboratory Safety Standard
Chemical Hoods • Conventional • Bypass • Auxiliary Air Bypass • Re-circulating/Ductless • Non-Chemical Hoods • BioSafety Cabinets • Laminar Flow Hoods
Unstable Set- Up Flammable and Toxic Atmospheres
Proper Set Up: Brightly Illuminated Clean Apparatus 6” Inside Slots Unobstructed
Unsafe Lab Practice
Unsafe Lab Practice
Safe Lab Practice
Improper Chemical Storage Restricted Airflow Chemical Escape Incompatible Chemicals Chemical Contamination
Proper Chemical Storage Hazard Class Secured Labeled Dry
Proper Material Storage Side or Rear 6” Beyond Sash Maximum 25% Slot Blockage
Improper Equipment Storage Sash Restricted Slot Opening Blocked Airflow Restricted Limited Protection
Proper Equipment Storage Elevate Apparatus Promote Airflow Contain Contaminants
Improper Waste Disposal Unsafe Illegal
Closed Sash Position One-Third Opening Chemical Exposure Explosion Protection Fire Containment
Open Sash Position Set Up Tear Down Hazard Absent
Damaged Sash Limited Protection Report Damage Repair Before Using
Raised Sash (Unattended) Reduced Air Velocity Fire/Explosion Chemical Exposure
Lowered Sash (Unattended) Increased Air Velocity Contain Fire/Explosion Limit Exposure
Open Lab Door Unrestricted Traffic Air Turbulence Room Depressurized Chemical Exposure Fire and Explosion
Closed Lab Door Control Foot Traffic Limit Turbulence Room Pressurized Limit Chemical Exposure Contain Fire and Explosion Provide Security
Hood Performance Ventilation Measurements Various Test Methods Face Velocity Measurements Sash Height Hood Contents
Hood Performance Ventilation Smoke Flow Patterns Laminar Flow Turbulence Eddy Currents Back Drafts
Hood Performance Certification Approval Caution Information
Hood Performance Danger Notice Do Not Use
Hood Performance Tissue Paper Ribbon
Hood Performance Flow Indicator Static Pressure Acceptable Range Alarm Mechanism Test Alarms
Hood Performance Flow Indicator Air Velocity Acceptable Range Alarm Mechanism Test Alarms
Ventilation System Duct Work Fan Exhaust Stack