Sintered Stainless Steel pre-filter test report
Rotary mode core sampling of waste tanks uses a nitrogen purge gas to remove cuttings from the drill bit. The use of the nitrogen purge gas requires an exhauster to remove the purge gas and maintain a negative pressure inside the tank. The exhauster will experience a high HEPA (High Efficiency Particulate Air) filter loading rate due to the cuttings from the rotary mode core sampling operation. This prompted the investigation of a re-useable pre-filter media that would lower the frequency of HEPA filter change out and reduce personnel exposure. The candidate media for the pre-filter was selected to be Bekipor ST-AL multi-layered metal fiber filter media (Sintered Stainless Steel). This sintered stainless steel media produces a fine mesh filter rated 99% efficient on 5 micron particulate. This media is commonly used in fluid and gas filtration systems. This media was tested to determine its ability to be cleaned and reused. Results of testing as well as a description of the test environment and conclusions are provided in this report.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 10116046
- Report Number(s):
- WHC-SD-WM-TRP-150; ON: DE94005488; BR: 35AF11201/35AF11202
- Resource Relation:
- Other Information: PBD: 24 Aug 1993
- Country of Publication:
- United States
- Language:
- English
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