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
Exhaust Systems
Siemens Industry, Inc. 137
Topic Requirement(s)
Commentary
Components
(Continued)
American National Standard for Laboratory Ventilation ANSI/AIHA Z9.5-2003
5.3.3
Each fan applied to serve a laboratory exhaust system or to exhaust an individual
piece of laboratory equipment (e.g., a laboratory chemical hood, biosafety cabinet,
chemical storage, etc.) shall be adequately sized to provide the necessary amount of
exhaust airflow in conjunction with the size, amount, and configuration of the
connecting ductwork. In addition, each fan’s rotational speed and motor horsepower
shall be sufficient to maintain the required exhaust airflow and stack exit velocity and
the necessary negative static pressure (suction) in all parts of the exhaust system.
Laboratory exhaust fans shall be located as follows:
• Physically outside of the laboratory building and preferably on the highest level roof
of the building served.
• In roof penthouse or a roof mechanical equipment room that is always maintained
at a negative static pressure with respect to the rest of the facility, and provides
direct fan discharge into the exhaust stack(s).
All laboratory exhaust fans shall include provisions to allow periodic shutdown for
inspection and maintenance. Such provisions shall include:
• Ready access to all fans, motors, belts drives, isolation dampers associated control
equipment and the connecting ductwork.
• Isolation dampers on the inlet side of all centralized exhaust system fans that have
individual discharge arrangements or their own individual exhaust stacks.
• Isolation dampers on both the inlet and outlet sides of all centralized exhaust
system fans that discharge into a common exhaust stack or plenum.
• Sufficient space to allow removal and replacement of a fan, its motor, and all
associated exhaust system components and equipment without affecting other
mechanical equipment or the need to alter the building structure.
ASHRAE, 2011 Handbook, HVAC Applications, Laboratories, Pg. 16.9 EXHAUST
SYSTEMS:
To the extent possible, components of exhaust systems should allow maintenance
without exposing maintenance personnel to the exhaust airstream. Access to filters
and the need for bag-in, bag-out filter housings should be considered during the design
process.