|
| DOE-STD-1066-99
o
The contents of gloveboxes and the need to limit contamination
spread due to a fire is an important consideration in determining the
number and location of separation devices.
15.2.6 Criticality Safety Provisions
15.2.6.1
Floor drains should be provided for all gloveboxes in which a criticality,
process safety, or other similar engineering analysis determines that
operations within a glovebox can create the potential for a criticality
incident.
15.2.6.2
Where criticality is a concern and a drain system provided, the glovebox
drain system design should provide for liquid collection/containment.
Containment methods may include tanks, diked floors, etc. In addition, the
drain piping and liquid collection systems/equipment should be designed
to avoid criticality incidents.
15.2.7 Glovebox Utilities and Services
15.2.7.1
All electrical components in the glovebox design should comply with the
applicable sections of NFPA 70, National Electrical Code.
15.2.7.2
Utilities (e.g., water, air, gas, etc.) serving gloveboxes should be provided
with shutoff or isolation valves for use in the event of an emergency.
These valves should be located so as to permit rapid operator action while
simultaneously protecting the operator from the emergency itself in or
adjacent to the glovebox.
15.2.7.3
All heating devices used inside gloveboxes (such as hot plates, furnaces,
etc.) should be listed/approved and equipped with automatic high-
temperature shutoff switches. Where the presence of hazardous
conditions warrant, the FHA should consider the need for high temperature
alarms to be transmitted to a constantly attended location.
15.3 Automatic Fire Suppression and Inerting Systems
15.3.1
Inerting Systems
15.3.1.1
General
Gloveboxes should be provided with inert atmospheres when:
o
combustible or pyrophoric metals are in use in significant
quantities as determined by the AHJ; and
o
required by the FHA or SAR.
Glove box inerting may be used in lieu of an automatic fire suppression
system when conditions warrant.
34
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |