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
Laboratory Ventilation Codes and Standards
Siemens Industry, Inc. 82
Topic Requirement(s) Commentary
Biological
Safety
Cabinets and
Classifications
(Continued)
3.4.3 Class III: A totally enclosed, ventilated cabinet of leak-tight construction.
Operations in the cabinet are conducted through attached rubber gloves. The
cabinet is maintained under negative air pressure of at least 0.50 in w.g. (120
Pa). Downflow air is drawn into the cabinet through HEPA filters. The exhaust air
is treated by double HEPA filtration or by HEPA filtration and incineration.
Scientific Equipment & Furniture Association
SEFA 1–2006 Recommended Practices for Laboratory Fume Hoods
8.4.1 Class I Cabinets
• Description
A ventilated cabinet that provides personnel and environmental
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protection. It is
characterized by an unrecirculated inward flow of air away from the operator
through a limited fixed access opening. Exhaust air must be HEPA filtered if
recirculated back into the laboratory. It may or may not be vented via a remote
ventilation system. This cabinet does not offer product protection.
8.4.2 Class II Cabinets
• Description A ventilated cabinet that provides personnel, product and
environmental
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protection. It is characterized by a limited fixed inward airflow
access opening that provides personnel protection, a vertical downward HEPA
filtered work zone that provides product protection and HEPA filtered exhaust
providing environmental protection. They are divided into types by the NSF and
Identified in Standard 49.
Class II Type A1 cabinets (Formally designated Type A)
• Minimum of 75 FPM (.36m/s) inflow.
• HEPA filtered downflow mixed with recycled air.
• May exhaust some or all HEPA filtered air back into the laboratory.
• May have positive pressure duct system.
Class II Type A2 cabinets (Formally designated Type B3)
• Minimum of 100 FPM (0.5m/s) inflow.
• HEPA filtered downflow mixed with recycled air.
• May exhaust some or all HEPA filtered air back into the laboratory.
• Has negative pressure duct system.
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Environmental protection requires a HEPA filter in the exhaust air stream prior to release outdoors.