The generator shall produce an aerosol quantity sufficient for reliable determination of
minimum filter penetration of 0.005%.
Test Aerosol Concentrations
Test aerosol concentrations shall meet the requirements of Appendix 2.4.1.
Test Flow Rates
The measurement and testing techniques shall be capable of testing HEPA filters at
nominal airflow rating
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.
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.
APPROVAL OF PENETROMETER AND TEST PROCEDURES
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