Ventilation Exhaust

DOE-STD-1066-99

15.6.4 Ventilation Exhaust

Exhaust air from gloveboxes containing flammable or other hazardous atmospheres

should be discharged to the outdoors. Such emissions should comply with applicable

Federal and State emissions requirements.

15.6.5 Ventilation Overpressure Protection

The designer should evaluate whether "dump valves" or other control equipment are

required to prevent glovebox over-pressurization if the primary exhaust system fails,

if there is a breach in the glovebox, internal pressurization or similar event occurs.

Rapid changes in atmospheric conditions may also result in over- or under-

pressurization of the glovebox (see Appendix J).

15.6.6 Multi-Unit Exhaust Manifolds

Glovebox exhaust ventilation lines should be designed so each box has its own

exhaust port. The purpose of this criterion is to prevent flame or hot fire gases from

traveling from one glovebox to another through a common header or interconnection

arrangement.

15.6.7 Noncombustible Materials

Noncombustible materials should be used for glovebox ventilation ducts regardless

of duct type (rigid or flexible). Insulation materials used to wrap/cover ventilation

ducts should also be of noncombustible material such as fiberglass.