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. 6
Term Definition Commentary
• (8.1) Tracer Gas
Tests
(Continued)
• (8.2) Peripheral
Scan
• (8.3) Sash
movement
Containment Test
This is the most intricate part of the ASHRAE 110 test and uses a precise release of
sulfur hexafluoride gas (or a gas of similar molecular weight and stability) inside of the
fume hood. The gas is released through a very specifically fabricated ejector unit and
the presence of gas molecules in parts per million (ppm) in the breathing zone of a
mannequin positioned in front of the fume hood are detected by very sensitive
instrumentation. The entire test arrangement including the required instrumentation and
apparatus (including instrumentation accuracy and calibration requirements) and the
actual test procedures are very intricately detailed in the ASHRAE 110 Standard.
This is a part of the tracer gas test but is performed without the mannequin. The gas
detector probe is manually traversed at precise locations around the periphery of the
fume hood openings.
This part of the tracer gas test is intended to determine the potential for fume escape
immediately following a sash movement. A very specific procedure is described and the
results are referred to as the sash movement effect (sme) and are given in ppm.
As stated previously, the requirements to
perform the full compliment of ASHRAE 110
tests requires a substantial investment in test
apparatus and extensive ‘know how’ to
properly conduct the tests. For this reason
ASHRAE 110 tests are normally conducted
by outside (third party) experienced
specialists in fume hood testing and not by
the laboratory occupants or fume hood users
themselves.
This test is intended to detect fume leakage
from the fume hood at locations that are not
in a user’s normal breathing zone.
Note again that the ASHRAE 110 Test
Standard does not provide any pass/fail or
acceptance criteria for the tracer gas tests.
The ASHRAE 110 tests are not only intended
to establish the adequacy of a fume hood at a
given point in time, but also to establish a
baseline of quantifying a fume hood’s
performance so that subsequent repeat
testing can be done to track continued
performance. Actual test pass/fail criteria are
intended to be established by the laboratory
facility or the designated Chemical Hygiene
Officer. However, other outside authorities
having jurisdiction (that is, local government
agencies or insurance companies, etc.) may
institute a set of required criteria based upon
certain ASHRAE 110 Tests.