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. 51
Topic Requirement(s) Commentary
Test
Procedures
(Continued)
American National Standard for Laboratory Ventilation ANSI/AIHA Z9.5-2003
6.6 If practical, the exhaust flow rate from hoods shall be tested by measuring the
flow in the duct by the hood throat suction method or by flow meter. If flow
measurement in the duct is not practical, velocity at the hood face or opening shall be
measured at a sufficient number of points to obtain a realistic average velocity and
multiplied by the open area in the plane of the velocity measurements to obtain the
flow rate. If the flow rate is more than 10% different from design, corrective action
shall be taken.
8.6.2.1 Allowable variations from design conditions, or conditions determined other
wise satisfactory, shall be:
• For air velocity, 10%
• For ventilation air pressure or differential pressure, +20%; For pneumatic control
system air pressure , <5%; and
• For electronic control system, +/- 2% of full scale values.
ASHRAE Standard: Method of Testing Performance of Laboratory Fume Hoods,
ANSI/ASHRAE 110-2006
Individual ASHRAE 110 Fume Hood Tests include:
• (6.1) Face Velocity Measurements
• (6.2) VAV Face Velocity Control Test
• (6.3) VAV Response Tests
• (7.1) Flow Visualization
• (7.2) Airflow Patterns
• (7.3) Local Visualization Challenge
• (7.4) Large Visualization Challenge
• (7.5) Smoke Evaluation
• (8.0) Tracer Gas Tests
• (8.2) Peripheral Scan
• (8.3) Sash Movement Containment Test
(Refer to ASHRAE 110 Test Standard in the Applicable Definitions section for a
description of each of these tests.)
Also see Appendix 4 - Audit Form in
ANSI/AIHA Z9.5-2003, which provides a
comprehensive checklist for the Laboratory
Ventilation Management Program including
Fume Hood inspection and testing.
The ASHRAE 110 tests are the most
comprehensive and widely recognized
method to test and quantify fume hood
performance. These tests are extremely
thorough and include:
• Determining fume hood average face
velocity.
• Testing the airflow into the fume hood at
the edges and corners of the sash
opening.
• Smoke visualization of the internal airflow
pattern.
• Tracer gas containment.
• Sash movement effect.
The ASHRAE 110 tests can establish a
baseline to quantify a fume hood’s
performance so that subsequent repeat
testing can be done to track continued
performance to determine if significant
performance deterioration has occurred.