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Page Title:
Methods for Containing Fire Spread |
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|  DOE-STD-1066-99
15.2.3.3
Noncombustible covers or plugs should be used to seal gloveport
openings if the gloves have been removed.
15.2.4
Gloves
15.2.4.1
Glovebox gloves should be selected based on the chemicals present in the
glovebox. Generally, hypalon or neoprene gloves are used where
permeation from the chemicals present is not a consideration. An
additional outer cover may be provided if required for operational or
personnel safety needs.
15.2.4.2
Gloves should be at least .030 inches (.076 centimeters) thick and should
be of one-piece construction.
15.2.5
Methods for Containing Fire Spread
15.2.5.1
Glovebox ventilation ducting should be provided with separation/isolation
dampers or doors to minimize fire propagation. Fire barriers should also
be provided between individual or groups of gloveboxes and within
glovelines where warranted by the FHA.
15.2.5.2
The separation/isolation dampers or doors should shut by a fusible device.
Where the glovebox is protected by an automatic fire suppression or
detection system, the dampers or doors should be equipped to close upon
activation of the system in lieu of providing conventional fusible devices.
In the case of fire detection systems, precautions such as heat detectors
or dual zone smoke detectors should be utilized so as to avoid inadvertent
operation and subsequent shutdown of the glovebox ventilation system.
15.2.5.3
Fire hazards analyses in combination with other ventilation and
contamination control analyses should be used to determine where these
separations are required. While specific guidance cannot be given due to
the variety of glovebox applications, fire separation features should be
considered for the following glovebox locations/situations:
o
Where required in conjunction with automatic fire suppression
systems.
o
At the connection point between the glovebox and its ventilation
exhaust duct.
o
At the connection point between a glovebox and a gloveline.
o
Between gloveboxes or banks of gloveboxes which are connected
in series, particularly where the glovebox run crosses physical
barriers which would serve as a fire stop to prevent fire propagation.
o
Unique situations where it is desirable to prevent fire propagation
within a group of gloveboxes, or between a glovebox(s) and other
areas.
33
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