ML20054G669
| ML20054G669 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/28/1982 |
| From: | Carey J DUQUESNE LIGHT CO. |
| To: | Galen Smith NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20054G661 | List: |
| References | |
| NUDOCS 8206220184 | |
| Download: ML20054G669 (3) | |
Text
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%9 uesne L@t Telephone (412) 4564000 Nuclear Division P.O. Box 4 Shippingport. PA 150774004 United States Nuclear Regulatory Commission Divisicn of Emergency Preparedness & Operational Support At tn :
Mr. George H. Smith, Director 631 Park Avenue King of Prussia, PA 19406
Reference:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334. License DPR-66 Emergency Public Warning System Gentlemen:
Title 10, Code of Federal Regulations, Part 50-54(s) (2) and Section IV, D.3 of Appendix E requires the licensee to demonstrate that administrative and physical means have been established for alerting the public in the event of an emergency at the Beaver Valley Power Station. The rule also provided 120 days for correction of deficiencies identified during the initial installation and testing phase. Our letter of March 10, 1982 identified unsatisfactory results discovered during our initial testing performed in February which required a certain number of sirens to be repaired / replaced.
In reply to your letter of May 12, 1982, requiring the previously identified deficiencies to be corrected prior to June 1,1982, all 108 sirens throughout the 10 mile EPZ of Beaver Valley are operable and capable of perf orming the alerting f unction in the event of an emergency.
Sirens which failed during initial testing have been repaired or re-placed as necessary and have been retested.
All sirens perform acceptably for the three (3) minute " ALERT" signal, however, we have experienced problems when testing the
" ATTACK" signal (See Attachment I).
The attack signal consists of a continuous start stop action; i.e., six (6) seconds on and five (5) seconds of f, over a three minute period. The " ATTACK" signal imposes a severe duty on the siren motor, and as a result, some motors have exhibited overheating problems.
For this reason, the " ATTACK" signal has been temporarily disconnected from the siren cont rol/ activation feature pending further investigation and resolu-tion of the problem.
Since the ATTACK signal is intended for Civil Defense purposes, disconnecting this f unction does not impair the ability of the siren system f rom properly performing its alerting function in the event of a nuclear facility-type emergency.
8206220184 820610 DR ADOCK 05000334 PDR j
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's In conclusion, we consider all sirens operable and capable of providing the alerting function in the event of an emergency.
Therefore, we consider this matter closed.
If there.are any further questions, please call my office.
Very truly yours, t
Carey Vice President, Nuclear Attachment cc:
D. A. Beckman, Resident Inspector U. S. Nuclear Regulatory Commission
' Beaver Valley Power Station Shippingport, PA 15077 U. S. Nuclear Regulatory Commission c/o Document Management Branch Washington, DC 20555
t THREE SIGNAL WAIL O
[
Alert Signal A Steady Tone for 3 Minutes 0
5 6
5 6
5 6
5 6
5 6
5
-N
(
Y YY Y
Tr Y Attack Signal A Wavering Tone On for 6 Seconds and Off for 5 Seconds Repeated for 3 Minutes 16 8
16 8
_/
0 N
X f
X M
i Fire Signal g
A Wavering Tone On for 16 Seconds and Off for 8 Seconds Repeated for 1.5 Minutes