ML20082C533
| ML20082C533 | |
| Person / Time | |
|---|---|
| Site: | Washington State University |
| Issue date: | 03/23/1995 |
| From: | Tripard G WASHINGTON STATE UNIV., PULLMAN, WA |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9504070056 | |
| Download: ML20082C533 (1) | |
Text
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] Washin' gton State University f{
M Nuclear Radiation Center Mmn WA 9 FAX 509 335-4,33 Thursday, March 23,1995 i
Director Office of Nuclear Reactor Regulation USNRC Washington, D.C. 20555
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Ref: Docket 50-27 Facility Operating License No. R-76
DearSir:
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This letter is intended to provide an update on the incident we initially reported by telephone and FAX on March 17,1995 and followed up with a written report on March 23,1995. As stated in the most recent letter (Mar. 23), last week was a bad time to try to analyze the event because so many crucial people were away on the university spring break.
On March 27,1995, I was abl: to contact the City of Pullman sewage treatment plant engineer, Pat j
Wiltzius, who was familiar with the volumes of water released by the City and the Washington State University (WSU) campus to the sewage treatment plant. He informed me that the average i
daily release of water from WSU, which is the actual I icensee, is 1.5 million gallons per day.
- E The technician, who on January 11,1995 made the hold-up tank water release which we thought to be in violation of 10 CFR 20 release lunits, said that the release was accomplished over a 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> 4
period. The average water rek:ase from the campus over this 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> period of time is 375,000 gallons. The resulting dilution provided by this additional water brings the final concentration of 5
i the activity released by the Licensee to 2.45 x 10-9 Ci/rul whicn is well within 10 CFR 20 release j
limit of 2.0 x 104 Ci/ml.
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A former associate director of the reactor facility said that the carapus water had never been i
included in the dilution calculation in order to be exceptionally conservative in the release concentration. We are re-examining this philosophy because with the stricra 10 CFR 20 release limits, we would now have to waste large quantities of domestic wwr (in short supply in this part
--j of the country) tc< meet dilution requirements. We are in the procest of re-evaluating our sewage release Standard Operating Procedure.
2T In summary, we now are convinced that there was no violation of the 10 CFR 20 release limits 4
because the total volume of water released by the Licensee, Washington State University,
%J sufficiently diluted the activity in the water.
i er If you have any questions, please contact Dr. Gerald Tripard, Facility Director (509) 335-0172 5,
Sincprely, f
3-Gerald E. Tripard, D; rector p
cc: Region IV NRC office A
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