Basic Documentation

Table Of Contents
Applicable Definitions (Alphabetical Listing)
Siemens Industry, Inc. 5
Term Definition Commentary
(7.3) Local
Visualization
Challenge
(7.4) Large
Visualization
Challenge
(7.5) Smoke
Evaluation
This consists of releasing a modest amount of smoke at several locations with the sash
in the ‘test’ position.
Under the fume hood airfoil
Along both side walls of the fume hood
Along the fume hood’s work surface
For an ‘As Used’ test, smoke is released around the equipment inside of the hood
Above the bottom of the open sash inside the fume hood
At the vertical openings of horizontal and combination sashes
Inside the fume hood cavity above the sash
This consists of releasing a relatively large volume of smoke at several locations with
the sash in the ‘test’ position.
Under the fume hood airfoil
Along both side walls of the fume hood
Along the fume hood’s work surface
For an ‘As Used’ test, smoke is released around the equipment inside of the hood
with all equipment in operation
Above the bottom of the open sash inside the fume hood
At the vertical openings of horizontal and combination sashes
Inside the fume hood cavity above the sash
Outside of the fume hood to determine the effect of room air currents
This
consists of making a notation for the observation for all of the individual procedures
above (7.4). If any visible smoke flows out of the fume hood, the hood fails the entire
Large Visualization Challenge.
A small or modest source of smoke (that is,
chemical smoke tubes or titanium
tetrachloride) can be used for these tests. The
‘test ‘position would usually be the maximum
fume hood sash opening or the sash design
opening.
Generally a theatrical smoke generator is best
for generating the large volume of smoke
required for these tests.