Basic Documentation
Table Of Contents
- Introduction
- Applicable Definitions (Alphabetical Listing)
- Laboratory Safety
- Hazard Assessment
- Chemical Hygiene Plan
- Chemical Hygiene Responsibilities
- Fume Hoods
- When Required & Safe Usage
- Gloveboxes:
- Face Velocity
- Face Velocity Setback
- Size & ADA Compliance
- CAV (Constant Air Volume) Bypass
- CAV (Constant Air Volume) Conventional
- VAV (Variable Air Volume)
- VAV Diversity
- Automatic Sash Closure
- Safe Operation of Sashes
- Accessories, Services and Explosion Protection
- Ductless
- Auxiliary Air
- (Special Purpose) Perchloric Acid
- Room Air Cross Currents
- Minimum Exhaust
- Monitoring
- Selection Criteria and Performance Specifications
- Laboratory Design & Fume Hood Implementation
- Maintenance
- Periodic Testing
- Test Procedures
- Signage and Recordkeeping
- Shutdown Procedures
- Evaluating CAV (Constant Air Volume) Systems
- Evaluating VAV (Variable Air Volume) Systems
- Biological Laboratories
- Biosafety Level 1
- Biosafety Level 2
- Biosafety Level 3
- Biosafety Level 4
- Ventilation for Biosafety Level 1
- Ventilation for Biosafety Level 2
- Ventilation for Biosafety Level 3
- Ventilation for Biosafety Level 4, Cabinet Laboratory
- Ventilation for Biosafety Level 4, Suit Laboratory
- Containment Levels - Canada
- Containment Levels and Ventilation Requirements: Canada
- Biological Safety Cabinets and Classifications
- Biosafety Cabinet Applications
- Biosafety Cabinets – Installation and Safe Usage Recommendations
- Biosafety Cabinets – Certification and Safe Usage - Canada
- Biological Safety Cabinet Design, Construction and Performance Requirements
- Biosafety Cabinet Testing
- Ventilation Systems
- Local Ventilation -When Required
- Ventilation Rates for Animal Rooms
- Ventilation Rates for Animal Rooms
- Ventilation Rates for Biological Labs
- Ventilation Rates for Chemical Laboratories
- Ventilation rates for Storage areas
- Room Supply Air
- Supply Air Quality and Filtration
- Room and Duct Pressurization
- Human Occupancy, Room Temperature and Humidity
- Animal Rooms Room Temperature and Humidity
- Load Calculations
- Room Sound Level and Vibration
- Emergency Control Provisions
- Energy Conservation
- Monitoring
- Maintenance
- Periodic Inspection and Testing
- Periodic Inspection and Testing - Canada
- Test Records
- Management
- Exhaust Systems
- Configuration
- Leakage
- Components
- Manifolded Systems
- Air Velocity
- Stack Height and Discharge Location
- Operational Reliability
- Recirculated Air and Cross Contamination
- Materials and Fire Protection
- Commissioning
- Commissioning - Canada
- Referenced Publications
Fume Hoods
Siemens Industry, Inc. 19
Fume Hoods
Topic Requirement(s) Commentary
When
Required &
Safe Usage
U.S. OSHA, 29 CFR, Part 1910, Occupational Safety and Health Standards,
Subpart Z, Toxic and Hazardous Substances,1910.1450,A3,C4(b),E1(n)(q),E3(f):
Provide adequate ventilation. The best way to prevent exposure to airborne
substances is to prevent their escape into the working atmosphere by use of hoods
and other ventilation devices.
A laboratory hood with 2.5 linear feet of hood space per person should be provided for
every 2 workers if they spend most of their time working with chemicals.
Use the hood for operations which might result in release of toxic chemical vapors or
dust.
(n) As a rule of thumb, use a hood or other local ventilation device when working with
any appreciably volatile substance with a TLV of less than 50 ppm.
Confirm adequate hood performance before use; keep hood closed at all times except
when adjustments within the hood are being made; keep materials stored in hoods to
a minimum and do not allow them to block vents or air flow.
Leave the hood "on" when it is not in active use if toxic substances are stored in it or if
it is uncertain whether adequate general laboratory ventilation will be maintained when
it is "off".
American National Standard for Laboratory Ventilation, ANSI/AIHA Z9.5-2003
2.1.1 Adequate laboratory chemical hoods, special purpose hoods, or other
engineering controls shall be used when there is a possibility of employee
overexposure to air contaminants generated by a laboratory activity.
3.1.1 Sash-limiting devices (stop s) shall not be removed if the design opening is less
than full opening.
3.1.1.1 Vertical sashes shall be designed and operated so as not to be opened more
than the design opening when hazardous materials are being used within the hood.
When the design sash opening is less than the maximum sash opening area the hood
shall be equipped with a mechanical sash stop and alarm to indicate openings in
excess of the design sash opening area.
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