ML20086G575
| ML20086G575 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 07/06/1995 |
| From: | Mccoy C GEORGIA POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| LCV-0527-B, LCV-527-B, NUDOCS 9507140462 | |
| Download: ML20086G575 (4) | |
Text
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Georg.a Power Company 40 invemess Center Parkv.ay l
Post Othce Box 1295 l
Birmingham, Alabama 35201 Telephoner 205 877 7122 l
Georgia Power C.K.McCoy VCe PfESident, NUCleaf vore Proieci July 6, 1995 "C"'" "2'*S'm i
LCV-0527-B Docket Nos. 50-424 50-425 i
U. S. Nuclear Regulatory Commission t
i A'ITN: Document Control Desk Washington, D. C. 20555 1
f Gentlemen:
VOGTLE ELECTRIC GENERATING PLANT ADDITIONAL INFORMATION CONCERNING REQUEST TO REVISE TECHNICAL SPECIFICATIONS TO ALLOW CONTAINMENT AIRLOCK DOORS TO BE OPEN DURING FUEL MOVEMENT By letter dated March 17,1995, Georgia Power Company (GPC) proposed an amendment to the Vogtle Electric Generating Plant (VEGP) Unit 1 and Unit 2 Technical Specifications to allow the personnel airlock (PAL) doors to be open during fuel movement. Attached is the requested additional information regarding Control Room radiological parameters used for analysis of a fuel handling accident with the PAL doors open.
Sincerely, C. K. McCoy
Enclosure:
CKM/IIWM/gmb cc: (See next page) 4
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9507140462 950706 PDR ADOCK 05000424 P
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j Georgia Power i
U. S. Nuclear Regulatory Commission Page 2
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l c(w): Georgia Power Comoany
-l Mr. J. B. Beasley, Jr.
i Mr. M. Sheibam NORMS e
U. S. Nuclear Regulatory Commission Mr. S. D. Ebneter, Regional Administrator Mr. D. S. Hood, Licensing Project Manager, NRR 1
Mr. B. R. Bonser, Senior Resident Inspector, Vogtle State ofGeorgia Mr. J. D. Tanner, Commissioner, Dept. of Natural Resources t
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LCV-0527-B 700776
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VOGTLE CONTROL ROOM RADIOLOGICAL ANALYSIS PARAMETERS FOR FHA WITH OPEN PAL X/Q (sec/m') Ref: FSAR Table 15A-2 0 to 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 5.7 x 10-'
8 to 24 hr 3.8 x 10
Control room volume, ft' l.72 x 10 (RefFSAR table 15A-1) 5 Maximum infiltration rate (unfiltered inleakage), ft'/ min 5 cfm (Ref FSAR table 15A-1)
Iodine Protection Factor (IPF) jpp _ Ao._ F, + 712 F+F 2
3 A
(1-rli)F, + F3 Where:
Ao
. Activity outside control room A
Activity inside control room Fi
= Filtered pressurization rate (1500 cfm) (Ref FSAR table 15A-1) ni
= filter efficiency, makeup air (0.99 for all iodines) (Ref FSAR table 15A-1)
F2
= Filtered recirculation rate (15,600 cfm) (17,100 - 1500 = 15,600) (RefFSAR table 15A-1) 92
= filter efficiency, recirculation air (0.99 for all iodines) (Ref FSAR table 15A-1)
F3
= unfiltered inleakage (5 cfm) (Ref FSAR table 15A-1)
The resulting IPF is 850 Geometry Factor (FSAR 15A.3.5)
GF = b = '
D, V"
3 Di
= Dose from an infinite cloud Dr
= Dose from a finite cloud of volume V V
= Control room volume The resulting geometry factor is 20.
a NOTE:
Offsite and control room doses were based on Regulatory Guide 1.109 thyroid dose conversion factors, consistent with Vogtle's current licensing basis. The best estimate dose to a person standing outside the PAL used ICRP 30 DCFs.
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