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National Institutes of Health
Office of Research Services
Division of Occupational Health and Safety
LOCAL EXHAUST VENTILATION TESTING PROTOCOLS
CONTENTS
1.0 DOWNDRAFT SINKS FOR SMALL ANIMAL SURGERY ........................................................... 1
1.1 Introduction .................................................................................................................................. 1
1.2 Performance Testing ..................................................................................................................... 1
1.2.1 Air Velocity Measurement ..................................................................................................... 1
1.2.2 Smoke Test ............................................................................................................................. 1
1.2.3 Recording Results .................................................................................................................. 1
1.3 Certification of Performance ........................................................................................................ 1
1.4 Frequency of Performance Testing ............................................................................................... 2
2.0 DOWNDRAFT TABLES FOR SMALL ANIMAL SURGERY ....................................................... 2
2.1 Introduction .................................................................................................................................. 2
2.2 Performance Testing ..................................................................................................................... 2
2.2.1 Air Velocity Measurement ..................................................................................................... 2
2.2.2 Smoke Test ............................................................................................................................. 3
2.2.3 Recording Results .................................................................................................................. 3
2.3 Certification of Performance ........................................................................................................ 3
2.4 Frequency of Performance Testing ............................................................................................... 3
3.0 SLOT HOODS USED FOR LOCAL VENTILATION ...................................................................... 3
3.1 Introduction .................................................................................................................................. 3
3.2 Preliminary Evaluation ................................................................................................................. 3
3.3 Performance Testing ..................................................................................................................... 4
3.3.1 Air Velocity Measurement ..................................................................................................... 5
3.3.2 Smoke Test .............................................................................................................................
5
3.3.3 Recording Results .................................................................................................................. 5
3.4 Certification of Performance ........................................................................................................ 5
3.5 Frequency of Performance Testing ............................................................................................... 5
4.0 Canopy Hoods Used for Local Ventilation ......................................................................................... 6
4.1 Introduction .................................................................................................................................. 6
4.2 Preliminary Evaluation ................................................................................................................. 6
4.3 Performance Testing ..................................................................................................................... 7
4.3.1 Air Velocity Measurement ..................................................................................................... 7
4.3.2 Smoke Test ............................................................................................................................. 7
4.3.3 Operating Parameter Check ................................................................................................... 7
4.3.4 Recording Results .................................................................................................................. 7