ML19209A757
| ML19209A757 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 09/21/1979 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7910050336 | |
| Download: ML19209A757 (2) | |
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. 3 SEP 25 a g :,17 Florida Powei C O A P O R A T 10 fu September 21, 1979 File:
3-0-3-a-4 Mr. J. P. O'Reilly Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Suite 3100 101 Marietta Street Atlanta, GA 30303
Subject:
Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 IE Bulletin 79-18
Dear Mr. O'Reilly:
Enclosed is our response to Items 1 and 2 of IE Bulletin 79-18.
Please contact this office if you require any additional discussion concerning our response.
Very truly yours, FLORIDA POWER. CORPORATION W. P. Stewart Manager Nuclear Operations WPSekcF01(D47) cc:
Director Division of Operating Reactors Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 z910050 3 3 4 770637 ii26 i89 S'Mg co, General Office 32o1 Tnirty tourin street soutn. P O Box 14042. St Petersburg. Florida 33733 e 813-866-5151
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IE Bulletin No. 79-18 Item 1:
Determine whether current alarm systens and evacuation announce-ment systems are clearly audible or visible throughout all plant areas with emphasis on high noise areas.
Determination in high noise areas must be made with the maximum anticipated noise level.
RESPONSE
As identified in the subject Bulletin, Florida Power C' poration has performed an engineering evaluation which did ide:.fy sever-al plant areas in the Auxiliary Building and the Intermediate Building (Radiation Control Area) where the annunciator system needed audibility improvement.
Item 2:
Determine what corrective action is necessary to assure that areas identified as inaudible areas in (1) above, will receive adequate audible / visual evacuation signals.
In areas where adequate audible / visual evacuation signals cannct be assured by hardware changes, determine what a.ditional administrative measures are necessary to assure pe.sonnel evacuation.
RESPONSE
As a result of the engineering evaluation a modification was vade to the intraplant cannunication system speaker network to produce an evacuation tone signal in the Radiation Control Area.
The tone signal system is a more effective means of alarm over the speaker network than the voice announcement method previously used.
In addition, an engineering study for a communications system upgrade, including visual alarm indicators for the very high noise areas identified in the above evaluation, is being conducted at this time and 1s expected to be completed by October 31, 1979. A schedule for installation can be determined at that time.
With the new tone signal in the Radiaticn Control Area and when the upgrade of the communication system is completed, there will not be any areas where adequate audible / visual evacuation signals cannot be seen or heard. Therefore no additional administrative measures are necessary to assure personnel evacuation.
ETibbs(IE79-18)DN88
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