ML19254A775
| ML19254A775 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 08/06/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Weigand J GULF STATES UTILITIES CO. |
| References | |
| NUDOCS 7908160122 | |
| Download: ML19254A775 (1) | |
Text
7Ze g"*'%
[ '[p,. (f[' 'p, NUCLEAR REGULATORY COMMISSION
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REGION IV 0,h N((
Gil fly ArJ PLAZA DFllVE, SUIT E 1000 Us,, ' ' *'
,o AflLINGioN, TE X AS 76012 August 6, 1979 In Reply Refer To:
RIV Docket Nos.
50-458/IE Bull 2 tin No. 79-18 50-459/IE Bulletin No. 79-18 Gulf States Utilities Attn:
Dr. J. G. Weigand General Manager,
?;uclear Projects Post office Box 2951 Beaumont, Texas 77704 Ge n tleme t..
The enclosed IE Bulletin 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,
/
V. Seyfr [
Director
Enclosure:
1.
IE Dulletin No. 79-18 2.
List of lE Bulletins Issued in Last 6 Months 7D()816 0 \\ d
UNITED STATES NUCLEAR REGULATORY COMMISSIJN OFFICE OF INSPECTION AND ENFORCEMENT WASIIINGTON, D.C.
20555 IE Bulletin No. 79-18 Date: August 6, 1979 Page 1 of 2 AUDIBILITY PROBLEMS ENCOUNTERED ON EVACUATION OF PERSONNEL FROM IIIGil-NOISE AREAS 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 (Shift Supervisor) assessed the monitor readings and initiated an auxiliary building evacuation. The evacuation announcement, made over the licensee's PA system, was not heard by the personnel working in the high-noise Licensee personnel did evacuate the auxiliary building upon observing area.
that other personnel had left, and af ter calling the control room to inquire if an evacuation had been initiated.
During these occurrences, licensee personnel were not exposed to quantities of radionuclides above regulatory guidance.
However, the potential existed for inadvertent unnecessary exposure of individuals to radioactive materials.
Subsequent to the NRC followup 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-ciator system needed audibility improvement. The licensee has installed a new auxiliary building evacuation tone signal and may add visual 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 syst ems are clearly audible or visible throughout all plant areas with emphasis <n high-noise areas. Dc made wi'_n the maximum anticipate (
DUPLICATE DOCUMENT Entire document previously entered into system under:
ANO 7'708030 903 No. of pages:
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