Basic Documentation

Laboratory Ventilation Codes and Standards
Siemens Industry, Inc. i
Table of Contents
Introduction ....................................................................................................................... 1
Where To Send Comments ........................................................................................... 1
Applicable Definitions (Alphabetical Listing) ................................................................ 2
Laboratory Safety ........................................................................................................... 16
Hazard Assessment ..................................................................................................... 16
Chemical Hygiene Plan ............................................................................................... 16
Chemical Hygiene Responsibilities ............................................................................. 17
Fume Hoods .................................................................................................................... 19
When Required & Safe Usage .................................................................................... 19
Gloveboxes: ................................................................................................................. 21
Face Velocity ............................................................................................................... 22
Face Velocity Setback ................................................................................................. 24
Size & ADA Compliance .............................................................................................. 25
CAV (Constant Air Volume) Bypass ............................................................................ 25
CAV (Constant Air Volume) Conventional ................................................................... 25
VAV (Variable Air Volume) .......................................................................................... 26
VAV Diversity ............................................................................................................... 27
Automatic Sash Closure .............................................................................................. 28
Safe Operation of Sashes............................................................................................ 29
Accessories, Services and Explosion Protection ........................................................ 30
Ductless ....................................................................................................................... 31
Auxiliary Air .................................................................................................................. 31
(Special Purpose) Perchloric Acid ............................................................................... 33
Room Air Cross Currents............................................................................................. 37
Minimum Exhaust ........................................................................................................ 39
Monitoring .................................................................................................................... 42
Selection Criteria and Performance Specifications ..................................................... 44
Laboratory Design & Fume Hood Implementation ...................................................... 45
Maintenance ................................................................................................................ 47
Periodic Testing ........................................................................................................... 48
Test Procedures .......................................................................................................... 50
Signage and Recordkeeping ....................................................................................... 52
Shutdown Procedures ................................................................................................. 54
Evaluating CAV (Constant Air Volume) Systems ........................................................ 55
Evaluating VAV (Variable Air Volume) Systems ......................................................... 56
Biological Laboratories .................................................................................................. 57
Biosafety Level 1 ......................................................................................................... 57