ML20128Q709

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Responds to 850524 Request for Addl Info Re Draft SER Open Item 92.Change to Bailey Re Simulator Performance Testing Will Be Included in FSAR Amend 17
ML20128Q709
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 05/28/1985
From: Bailey J
GEORGIA POWER CO.
To: Adensam E
Office of Nuclear Reactor Regulation
References
GN-628, NUDOCS 8506040280
Download: ML20128Q709 (3)


Text

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Georgit Power Company

-4 Routa 2. Box 299A

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. Wayntsboro, Georgia 30830 Telephone 404 554-9961 404 724-8114 Southern Company Services,Inc.

Post C!fice Box 2625 Birmingham, Alabama 35202 Telephone 205 870-6011 Vogtle Proj.ect May 28, 1985 Director of Nuclear Reactor Regulation File: X7BC35 Attention:- Ms.' Elinor G. Adensam, Chief Log: GN-628 Licensing Branch #4

-Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555 REF: BAIIEY TO DENTON, GN-609, DATED 5/10/85 NRC DOCKET NUMBERS 50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPPR-109 V0GTLE ELECTRIC GENERATING PLANT - UNITS 1 AND 2 FEQUEST FOR ADDITIONAL INFORMATION: DSER OPEN ITEM 92

Dear Mr. Denton:

As a result of a telephone conversation with members of your staff on May 24, 1985, the attached change has been made to the referenced letter. This change supercedes that of the referenced letter and will be included in FSAR Amendment 17.

If your staff requires any additional information, please do not hesitate to contact me.

Sincerely, ,

J. A. Bailey Project' Licensing Manager JAB /caa Enclosure xc:' D. O. Foster R. A. Thomas J. E. Joiner, Esquire B. W. Churchill, Esquire M.'A. Miller B. Jones, Esquire I

L. T. Gucwa .

C. Bockhold, Jr. 8 H. H. Gregory, III I

[g T. Johnson A D. C. Teper-L.'Fowier Vogtle Project File 0205m 8506040200 850528 PDR ADOCK 05000424

, E PDR L_

Insert to 13.2.1.2 '!

The VEGP simulator will conform to the guidance given'in Regulatory Guide ~

1.149. ' Performance testing of the simulator specified in paragraph 5.4 of_ ANSI /ANS-3.5-1981 will be accomplished in the following manner:

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1. ' Comparison of the steady state operating valuesiof critical and noncritical parameters -between the VEGP Unit 1' control room and the sisulator at various power levels.. .
2. Maneuvering of the simulator through the-following plant evolutions-listed in paragraph 3.1.1 of the standard.
(a) : Plant startu'p - cold to hot standby. The starting. conditions shall be' refueling conditions of temperature, and pressure (b) Nuclear startup from hot standby to rated power
(c) Turbine startup and generator synchronization

-(d) . Reactor trip followed by recovery to rated power (e) Operations at hot standby (f) Load changes (manual and automatic control)

-(g) Plant shutdown from rated power to hot standby to cooldown to cold-(refueling) conditions (h) Startup, shutdown and power operations with less than full.

reactor coolant flow is not permitted by the VEGP operating license and therefore will not be conducted.

'3. Core physics testing will be comprised of an evaluation'of simulation of:

(a) Estimated. critical position computation-(b) Estimated critical concentration computation (c) Shutdown margin computation (d) - Estimating criticality by the I/M plotting method

4. Operations surveillance procedure testing will be comprised of those control room operations which are required to conduct the operability tests of'the following systems:

(a) Diesel generators (b) Auxiliary feedwater (c) High lead safety-injection (d) Safety injection (e) Residual heat removal

.(f) Nuclear service cooling water

5. Simulator malfunction conditions shall be evaluated by_ experienced staff members for best estimate response or compared to actual plant data or other best estimate data.
6. The simulators response to transient conditions will be compared to design information from the simulator data base or other best estimate data.

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~When a limited change is made,'a specific-periormance test on the

7. . Taffected systems and components shall be performed.

A11 testing will.be-performed-independent of any classroom activity, with

' testing of..the simulator as the only objective. The=results of all testing.will be documented as the testing is being performed.

-Factory acceptance-testing of the VEGP simulator has already been completed. The performance test described above will'be completed prior to August 1,'1988 and not less than every four years thereafter.

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