ML20207J757
| ML20207J757 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 09/20/1988 |
| From: | Bailey J GEORGIA POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| GN-1488, NUDOCS 8809280113 | |
| Download: ML20207J757 (2) | |
Text
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Vogtie Project '
e September 20, 1988 f
United Statas Nuclear Regulatory Commission !
ATTN: Document Control Desk Files X7BC35 l Washington, D. C. 20$55 Log: GN-1488 !
NRC DOCKET NUMBER 50-425 CONSTRUCTION PERMIT NUMSER CPPR-109 VOGTLE ELECTRIC GENERATING PLANT - UNIT 2 SER Open Ites lebt Safety Parageter Display System (SPDS) i The Unit 1 SPDS was considered fully operational by the NRC staff in Section 18.2 of Supplement 6 to the Vogtle Safety Evaluation !
Report. However, the staff stated that similarity of the Unit 1 !
and Unit 2 SPDS's must be demonstrated. Georgia Power Company's :
discussion of this similarity is attached. l If your staf f should require additional information, please do not !
hesitate to contact me.
Sincerely. l k- ,
J. A. Bailey i Project Licensing Manager l JAB /sen J Attachment l xct NRC Regional Administrator J.B. Hopkins (2)
NRC Resident Inspector O. Bockhold. Jr. .
P. D. Rice J. E. Joiner. Esquire J. P. Kane R. J. Goddard. Esquire ;
R. A. Thomas R. W. McManus ,
B. W. Churchill, Esquire Vogtle Project File j f
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- e ..s SPOS SIMILARITY BETWEEN UNIT 1 AND UNIT 2 The software used in the verification and validation of the Unit 2 SPDS is the same sof tware used in the verification and validation of the Unit 1 SPDS.
With regard to the similarity of the Unit 2 Emergency Response Facility (ERF) computer to the Unit 1 ERP computer the dif f erences are outlined below.
The Unit 2 ER? computer hardware le identical to the Unit 1 computer except the meteorological data (16 inputs), the common radiation data (26 inputs), and some miscellaneous HVAC damper positions (17 inputs) are not terminated in the Unit 2 computer.
Therefore the Unit 1 and Unit 2 software is !dentical except for the following:
- 1. There is no data base information in the Unit 2 computer pertaining to the inputs above.
- 2. The software which drives the radiation status lights as part of the Unit 2 SPDS does not "look" at the common radjation data. This is the only difference in the SPDS portion of the two EdF computers.
- 3. The software which computes the met tower data averages and drives the three (3) met tower displays has been deleted from the Unit 2 software.
If should be noted that there may be some normal and alarm setpoint differences in ti;e two d; ta bases due to operating dif f erences in the units.