Other Factors

DOE-STD-3025-99

1.4.2

The generator shall produce an aerosol quantity sufficient for reliable determination of

minimum filter penetration of 0.005%.

1.4.3

Test Aerosol Concentrations

Test aerosol concentrations shall meet the requirements of Appendix 2.4.1.

1.4.4

Test Flow Rates

The measurement and testing techniques shall be capable of testing HEPA filters at

nominal airflow rating

1.5

OTHER FACTORS

1.5.1

Maintainability and Operability

The test equipment shall be readily operable by trained technicians. Components that

require repair or realignment by skilled personnel should be of a modular design such

that they can be replaced by the trained technician.

1.5.2

Aerosol Sampling

Upstream and downstream concentrations measured by the new test equipment shall be

demonstrated to be representative of the respective total concentrations within 5%.

Establishment of representativeness can be achieved by multiple sampling (across the

area of the downstream face of a filter and across the cross-section of the chuck,

upstream of the filter under test), using an averaging procedure described in ANSI

N510-1980 or by using an alternate procedure approved by the DOE.

1.6

APPROVAL OF PENETROMETER AND TEST PROCEDURES

1.6.1

Notice of Intent

Organizations desiring to receive DOE approval of a penetrometer or test procedure for

quality assurance testing of HEPA filters shall notify the DOE FTF Coordinator in

writing and shall provide preliminary data which demonstrates how the specifications