Proceedings of the fifteenth DOE nuclear air cleaning conference

Papers presented are grouped under the following topics: noble gas separation, damage control, aerosols, test methods, new air cleaning technology from Europe, open-end, and filtration. A separate abstract was prepared for each paper

17th DOE nuclear air cleaning conference: proceedings. Volume 2

Volume 2 contains papers presented at the following sessions: adsorption; noble gas treatment; personnel education and training; filtration and filter testing; measurement and instrumentation; air cleaning equipment response to accident related stress; containment venting air cleaning; and an open end session. Twenty-eight papers were indexed separately for inclusion in the Energy Data Base. Ten papers had been entered earlier

Acoustic and turbulent agglomeration of sodium aerosols. Final report, October 1, 1975--July 31, 1978

A suitability of 6 packing materials for removal of sodium fire aerosols in a wet cell scrubber was evaluated experimentally by measuring the efficiency and flow resistance of two 10.2 cm deep cells in series at air face velocities of 185 and 289 cm/sec, water flow rates of 0.210 ad 0.387 cm/sup 3//sec/cm/sup 2/, with and without aerosol prehumidification. The most satisfactory material was found to be 50 ..mu..m diameter stainless steel fibers at a packing density of 30 kg/m/sup 3/ (porosity = 0.99). Two 10.2 cm deep cells in series gave a removal efficiency of 85% for typical sodium fire aerosols at a face velocity of 289 cm/sec. Measurement of efficency as a function of particle size indicated a reduction in efficiency in the 0.4 to 1.1 ..mu..m size range for all packing materials

Criteria for calculating the efficiency of deep-pleated HEPA filters with aluminum separators during and after design basis accidents

The authors have reviewed the literature on the performance of high efficiency particulate air (HEPA) filters under normal and abnormal conditions to establish criteria for calculating the efficiency of HEPA filters in a DOE nonreactor nuclear facility during and after a Design Basis Accident (DBA). This study is only applicable to the standard deep-pleated HEPA filter with aluminum separators as specified in ASME N509. The literature review included the performance of new filters and parameters that may cause deterioration in the filter performance such as filter age, radiation, corrosive chemicals, seismic and rough handling, high temperature, moisture, particle clogging, high air flow and pressure pulses. The deterioration of the filter efficiency depends on the exposure parameters; in severe exposure conditions the filter will be structurally damaged and have a residual efficiency of 0%. Despite the many studies on HEPA filter performance under adverse conditions, there are large gaps and limitations in the data that introduce significant error in the estimates of HEPA filter efficiencies under DBA conditions. Because of this limitation, conservative values of filter efficiency were chosen when there was insufficient data