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Title: Test Stand Development to Assess the Performance of Ceramic Media Filters to Develop Section FO of ASME AG-1

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Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Conference: Presented at: 2017 American Nuclear Society (ANS) Winter Meeting and Nuclear Technology Expo, Washington, DC, United States, Oct 29 - Nov 02, 2017
Country of Publication:
United States

Citation Formats

Schemmel, A, Cho, H, and Waggoner, C. Test Stand Development to Assess the Performance of Ceramic Media Filters to Develop Section FO of ASME AG-1. United States: N. p., 2017. Web.
Schemmel, A, Cho, H, & Waggoner, C. Test Stand Development to Assess the Performance of Ceramic Media Filters to Develop Section FO of ASME AG-1. United States.
Schemmel, A, Cho, H, and Waggoner, C. 2017. "Test Stand Development to Assess the Performance of Ceramic Media Filters to Develop Section FO of ASME AG-1". United States. doi:.
title = {Test Stand Development to Assess the Performance of Ceramic Media Filters to Develop Section FO of ASME AG-1},
author = {Schemmel, A and Cho, H and Waggoner, C},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 5

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  • High Efficiency Particulate Air (HEPA) filters are defined as extended-medium, dry-type filters with: (1) a minimum particle removal efficiency of no less than 99.97 percent for 0.3 micrometer particles, (2) a maximum, clean resistance of 1.0 inch water column (in. WC) when operated at 1,000 cubic feet per minute (CFM), and (3) a rigid casing that extends the full depth of the medium. Specifically, ceramic media HEPA filters provide better performance at elevated temperatures, are moisture resistant and nonflammable, can perform their function if wetted and exposed to greater pressures, and can be cleaned and reused. This paper describes themore » modification and design of a large scale test stand which properly evaluates the filtration characteristics of a range of ceramic media filters challenged with a nuclear aerosol agent in order to develop Section FO of ASME AG-1.« less
  • High efficiency particulate air (HEPA) filtration technology is commonly used in Department of Energy (DOE) facilities that require control of radioactive particulate matter (PM) emissions due to treatment or management of radioactive materials. Although HEPA technology typically makes use of glass fiber media, metal and ceramic media filters are also capable of filtering efficiencies beyond the required 99.97%. Sintered metal fiber filters are good candidates for use in DOE facilities due to their resistance to corrosive environments and resilience at high temperature and elevated levels of relative humidity. Their strength can protect them from high differential pressure or pressure spikesmore » and allow for back pulse cleaning, extending filter lifetime. Use of these filters has the potential to reduce the cost of filtration in DOE facilities due to life cycle cost savings. ASME AG-1 section FI has not been approved due to a lack of protocols and performance criteria for qualifying section FI filters. The Institute for Clean Energy Technology (ICET) with the aid of the FI project team has developed a Section FI test stand and test plan capable of assisting in the qualification ASME AG-1 section FI filters. Testing done at ICET using the FI test stand evaluates resistance to rated air flow, test aerosol penetration and resistance to heated air of the section FI filters. Data collected during this testing consists of temperature, relative humidity, differential pressure, flow rate, upstream particle concentration, and downstream particle concentration. (authors)« less
  • Development of a metal media standard (FI) for ASME AG-1 (Code on Nuclear Air and Gas Treatment) has been under way for almost ten years. This paper will provide a brief history of the development process of this section and a detailed overview of its current content/status. There have been at least two points when dramatic changes have been made in the scope of the document due to feedback from the full Committee on Nuclear Air and Gas Treatment (CONAGT). Development of the proposed section has required resolving several difficult issues associated with scope; namely, filtering efficiency, operating conditions (mediamore » velocity, pressure drop, etc.), qualification testing, and quality control/acceptance testing. A proposed version of Section FI is currently undergoing final revisions prior to being submitted for balloting. The section covers metal media filters of filtering efficiencies ranging from medium (less than 99.97%) to high (99.97% and greater). Two different types of high efficiency filters are addressed; those units intended to be a direct replacement of Section FC fibrous glass HEPA filters and those that will be placed into newly designed systems capable of supporting greater static pressures and differential pressures across the filter elements. Direct replacements of FC HEPA filters in existing systems will be required to meet equivalent qualification and testing requirements to those contained in Section FC. A series of qualification and quality assurance test methods have been identified for the range of filtering efficiencies covered by this proposed standard. Performance characteristics of sintered metal powder vs. sintered metal fiber media are dramatically different with respect to parameters like differential pressures and rigidity of the media. Wide latitude will be allowed for owner specification of performance criteria for filtration units that will be placed into newly designed systems. Such allowances will permit use of the most appropriate metal media for a system as specified by the owner with respect to material of manufacture, media velocity, system maximum static pressure, maximum differential pressure across the filter, and similar parameters.« less
  • Testing of heat exchanger performance is conducted to (1) confirm that the installed unit meets design specifications, (2) troubleshoot degradation, and (3) assess process improvements. Standard test methods are needed to ensure that highly accurate and reliable test results are obtained. These methods need to predict heat exchanger performance at design conditions based on test measurements at different conditions. ASME Performance Test Code 12.5, Single Phase Heat Exchangers, is under development to meet these needs. This paper summarizes the content of PTC 12.5 which is ready for industry review. The new PTC improves upon existing guidelines because methods to minimizemore » and quantify uncertainty are provided. Overall uncertainty as low as 8% in heat transfer rate and overall heat transfer coefficient is possible for a well designed and properly instrumented thermal performance test.« less