ML20148B741
| ML20148B741 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/17/1988 |
| From: | Ken Wilson FLORIDA POWER CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-3.D.3.4, TASK-TM 3F0388-11, 3F388-11, NUDOCS 8803220104 | |
| Download: ML20148B741 (2) | |
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e Florida Power CO R PO R AT 4 ON March 17, 1988 3F0388-11 U. S. Nuclear Regulatory M maion Attention: Docturent Control Desk Washington, D.C.
20555
Subject:
Crystal River Unit 3 Docket No. 50-302 Operatirg License No. DPR-72 NUREG 0737, It s III.D.3.4 Ccotrol Rom Habitability Removal of Amonia Detectors
Dear Sir:
y A calculation package was prtpared to evaluate the continued need for the CR-3 Control Cteplex Amonia detectors. 'Ihese th - nts were used !!o determine the maxinum concentrations which would be present in the control rocan in the event of a ccuplete rupturn of an 8500 pound capacity tank located at Crystal River Units 4 and 5.
'Ibe analysis took appropriate credit for the buoyancy. 'Ibe resulting height of the plume rise is a function of wind speed and distance between the source and receptor. In the evaluation, wird speeds were varied from int sec. -
/
7ng/sec. As wind increases, the plume rise is less. However, as the wind speed increases, the gas cloud W nore diffused with resulting icwer gas con ntrations. 'Ibe peak concentration is expected to be beteen 5.1 ng/md 3
and 12.4 ng/m. 'Ibe protective action limit, as given in Regulatory Guide 3
1.78 is 70 ng/m. 'Iberefore, the peak Control Otmplex conmntrations are well within the protective action limits without Corfcrol Otmplex isolation.
8803220104 880317 PDR ADOCK 05000302
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Hardi 17,1988 3F0388-11 Pege 2
'Iherefore, FPC is renoving the Ausnonia detectors and expects to subnit a technical specification diange with supporting analysis to you by April 29, 1988.
Sincerely, K. R. Wilson, Manager Nuclear Operations Licensing E/ nun oc: Dr. J. Nelson Grace Regional Administrator, Region II Mr. T. F. Stetka Senior Resident Inspector