ML19256B626
| ML19256B626 | |
| Person / Time | |
|---|---|
| Site: | Bailly |
| Issue date: | 08/07/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Shorb E NORTHERN INDIANA PUBLIC SERVICE CO. |
| References | |
| NUDOCS 7908150363 | |
| Download: ML19256B626 (1) | |
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GLEN E LLYN, ILLINOIS 60137 AUG 7 1979 Docket No. 50-367 Northern Indiana Public Service Company ATTN:
Mr. Eugene M. Shorb Senior Vice President 5265 liohman Avenue llammond, IN 46325 Gentlemen:
The enclosed IE Bulletin No. 79-18 is forwarded to you for information.
No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely, be
-w James G. Keppler Director
Enclosure:
IE Bulletin No. 79-18 cc w/ encl:
Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC Mr. Dean liansell, Office of Assistant Attorney General 7 908150 7c 3,
Accessions No: 7908030403 SSINS No: 6820 UNITED STATES NUCLEAR RECULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMTNT WASHINGTON, D.C.
20555 August 7, 1979 IE Bulletin No. 79-18 AUDIBILITY PROBLEMS ENCOUhTERED ON EVACUATION OF PERSONNEL FROM HIG APIAS Description of Circumstances:
In January 1979, a number of licensee personnel were engaged in routine activities in the auxiliary building at the Florida Power Corporation, Crystal River Unit 3 nuclear plant.
While these individuals were working in the auxiliary building, in a high-noise (fan) area, an unplanned release of radio-active noble gases was detected by building monitors within the auxiliary building at concentrations which caused the licensee to initiate the facility emergency plan auxiliary building evacuation procedure.
The facility Emer-gency Officer (Shif t Supervisor) assessed the monitor readings and initiated an auxiliary building evacuation.
The evacuation announce:nent, made over the licensee's PA system, was not heard by the personnel workinh in the high-noise Licensee personnel did evacuate the auxiliary building upon observing area.
that other personnel had left, if an evacuation had been initiated.and after calling the control room to inquire During these occurrences, licensee personnel were not exposed to quantities of radionuclides above regulatory guidance.
However, the potential existed for inadvertent emnecessary exposure of individuals to radioactive materials.
Subsequent to the NRC follovup inspection of this occurrence, Florida Power Corporation initiated an assessment of this situation and performed an engineering evaluation and identified several plant areas where the annun-cistor system needed audibility improvement. The licensee has installed a new auxiliary building evacuation tone signal and may add vi.sual alarm indi-cators in areas of very high-noise.
Action to be Taken by the Licensees:
For all power reactor facilities with an operating license:
1.
Determine whether current alarm systems and evacuation announcement systems are clearly audible or visible throughout all plant areas with emphasis on high-noise areas.
Determination in high_no made with the maximu= anticipated nois DUPLICATE DOCUMENT Entire document previously entered into system under.
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