ML19275A730
| ML19275A730 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 09/07/1979 |
| From: | Pilant J NEBRASKA PUBLIC POWER DISTRICT |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| NUDOCS 7910190049 | |
| Download: ML19275A730 (2) | |
Text
CENTRAL FILES PDR:HQ NSIC c
1 6
Nebraska Public Power District C
=- =___-
September 7, 1979 1 b Mr. Karl V.
Seyfrit, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region IV 611 Ryan Plaza Suite'1000 Arlington, Texas 76011
Subject:
IE Eulletin No. 79 18 Audibility Problems Encountered on Evacuation of Personnel from High Noise Areas
Dear Mr. Seyfrit:
This letter is written in response to your letter dated August 6, 1979 transmitting the subject bulletin.
The Cooper Nuclear S:ation evacuation alarm consists of a distinct pulsed-tone generator signal sounded through the normal plant intercom syste=.
As a result, audibility of the speaker part of the sy, tem is continually checked on a routine basis including the checking around standby equipment during surveillance tests.
The pulsed-tone generator is also checked on a scheduled basis.
A special test was conducted on August 29, 1979 for audibility deter-mination.
The test consisted of sounding the alarm for a 30 minute period while designated personnel covered assigned areas to determine audibility.
Several areas required speaker volume adjustment to improve audibility.
As a backup measure to the evacuation alarm, our emergency ;1an calls for pe ?onnel accountability.
The in-place key card system for security purposes orovides a means of quickly checking the personnel on site by requesting a printout from the security computer.
A check of any per-sonnel t.ot cleared out thru the area exit turnstile can be readily made.
The security computer also has a record of ac., person in a vital area.
Thus, the computer has a record of those personnel that are in the a ble of high radiation and reactor building which is the area most pr a
evacuation.
1177 084 m o190 OW
Mr. K. V. Seyf rit September 7, 1979 Page 2.
We consider that our existing system is adequate and have completed all planned action items.
If you have any questions regarding this response, please contact us.
Sincerely, k4 J. M. Pilant Director of Licensing and Quality Assurance JMP:LCL:cg n79 085