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Laboratory Safety-Fume Hoods 29 CFR 1910.1450 Laboratory Safety Standard

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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. - PowerPoint PPT Presentation

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Page 1: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

29 CFR 1910.1450Laboratory Safety Standard

Page 2: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Chemical Hoods

•Conventional

•Bypass

•Auxiliary Air Bypass

•Re-circulating/Ductless

Non-Chemical Hoods

•BioSafety Cabinets

•Laminar Flow Hoods

Page 3: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Horizontal Sash Vertical Sash

Combinations Canopy

California Slotted

Walk-in Etc.

Chemical Hood Types

Page 4: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unstable Set- Up

Flammable and Toxic Atmospheres

Page 5: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unsafe Experiment

Page 6: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Chemical Contamination

Page 7: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Proper Set Up:

Brightly Illuminated

Clean

Apparatus 6” Inside

Slots Unobstructed

Page 8: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unsafe

Lab

Practice

Page 9: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unsafe

Lab

Practice

Page 10: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Safe

Lab

Practice

Page 11: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Restricted Airflow

Chemical Escape

Incompatible Chemicals

Chemical Contamination

Improper Chemical Storage

Page 12: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Proper Chemical Storage

Hazard Class

Secured

Labeled

Dry

Page 13: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Side or Rear

6” Beyond Sash

Maximum 25% Slot Blockage

Proper Material Storage

Page 14: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Sash Restricted

Slot Opening Blocked

Airflow Restricted

Limited Protection

Improper Equipment Storage

Page 15: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Elevate Apparatus

Promote Airflow

Contain Contaminants

Proper Equipment Storage

Page 16: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unsafe

Illegal

Improper Waste Disposal

Page 17: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

One-Third Opening

Chemical Exposure

Explosion Protection

Fire Containment

Closed Sash Position

Page 18: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Set Up

Tear Down

Hazard Absent

Open Sash Position

Page 19: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Limited Protection

Report Damage

Repair Before Using

Damaged Sash

Page 20: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Reduced Air Velocity

Fire/Explosion

Chemical Exposure

Raised Sash (Unattended)

Page 21: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Increased Air Velocity

Contain Fire/Explosion

Limit Exposure

Lowered Sash (Unattended)

Page 22: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Unrestricted Traffic

Air Turbulence

Room Depressurized

Chemical Exposure

Fire and Explosion

Open Lab Door

Page 23: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Control Foot Traffic

Limit Turbulence

Room Pressurized

Limit Chemical Exposure

Contain Fire and Explosion

Provide Security

Closed Lab Door

Page 24: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Ventilation Measurements

Various Test Methods

Face Velocity Measurements

Sash Height

Hood Contents

Hood Performance

Page 25: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Ventilation Smoke

Flow Patterns

Laminar Flow

Turbulence

Eddy Currents

Back Drafts

Hood Performance

Page 26: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Certification Approval

Caution Information

Hood Performance

Page 27: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Danger Notice

Do Not Use

Hood Performance

Page 28: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Tissue Paper

Ribbon

Hood Performance

Page 29: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Flow Indicator

Static Pressure

Acceptable Range

Alarm Mechanism

Test Alarms

Hood Performance

Page 30: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Flow Indicator

Air Velocity

Acceptable Range

Alarm Mechanism

Test Alarms

Hood Performance

Page 31: 29 CFR 1910.1450 Laboratory Safety Standard

Laboratory Safety-Fume Hoods

Ventilation System

Duct Work

Fan

Exhaust Stack


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