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VENTING OCCURS IN HANFORD WASTE TANK 101-SY

 VENTING OCCURS IN HANFORD WASTE TANK 101-SY
 RICHLAND, Wash., April 23 /PRNewswire/ -- Gases from radioactive


waste storage tank 101-SY on the Hanford Site vented at 8 p.m., Monday, April 20, Westinghouse Hanford Co. said today. This was a smaller event than the previous gas release in December 1991. The venting occurred without incident and lasted between five and six hours.
 Gases released include hydrogen and nitrogen. Westinghouse Hanford Co. technicians are continuing to evaluate the data to determine whether enough gas was vented to open a "window" of three to four weeks to safely work and conduct tests that could provide data necessary to prevent further gas ventings. Such activities are halted when hydrogen builds up again.
 Work to be accomplished if a "window" is open includes relocation of some monitoring instruments installed in the tank to make room for other equipment needed to test possible mitigation options. The tests will be conducted later, once the required equipment is fully developed and installed.
 Westinghouse Hanford oversees waste tank activities and other programs as the management and operations contractor for the Department of Energy's Richland Field Office.
 -0- 4/23/92
 /CONTACT: Eric Campbell, 509-376-2472, or Craig Kuhlman, 509-376-6826, both of Westinghouse Hanford/ CO: Westinghouse Hanford Co. ST: Washington IN: OIL SU:


SC-JH -- SE016 -- 2241 04/23/92 20:16 EDT
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Publication:PR Newswire
Date:Apr 23, 1992
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