Definitions - std30200010

DOE-STD-3020-97

3.0

DEFINITIONS

Acceptance Test

Inspection and testing of a HEPA filter to verify certain characteristics or

properties which determine acceptance or rejection of that filter.

Airflow Resistance

An index of the energy required to maintain airflow through a filter. Airflow

resistance is measured in terms of the air pressure difference (pressure

drop) across a filter at a specified flowrate (e.g. see section 5.2.2, Table-1).

Note: The initial airflow resistance of a new filter serves as an index of the

filter s potential loading capacity.

Approved Test Aerosol

Particle-generating materials approved by DOE for performance testing.

Test aerosols approved by the DOE for tests conducted in the Filter Test

Facility are di-octyl phthalate (DOP), also known as DEHP and di-octyl

sebacate (DOS), also known as DEHS.

Filter Test Facility (FTF)

A facility established by the DOE specifically to conduct performance quality

assurance inspections and tests of HEPA filters.

High Efficiency Particulate Air (HEPA) Filter

A throwaway, extended-media, dry type filter with a rigid casing enclosing the

full depth of the pleats. The filter shall exhibit a minimum efficiency of

99.97% when tested at an aerosol of 0.3 micrometers diameter. The

maximum airflow resistance shall be as specified in Section 5.2, Table 1 of

this standard.