ML18139A379

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Confirms Agreement Re Review Criteria for Control Rod Bank Reactivity Worth Tests.Modified Table A.2 of VEP-FRD-36, Control Rod Reactivity Worth Determination by Rod Swap Technique Encl
ML18139A379
Person / Time
Site: Surry, North Anna  Dominion icon.png
Issue date: 06/26/1980
From: Thomas W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, Varga S
Office of Nuclear Reactor Regulation
References
569, NUDOCS 8006300388
Download: ML18139A379 (6)


Text

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND,VIHGINIA 23261 June 26*, 1980 Mr. H. R. Denton, Director Serial No. 569 Office of Nuclear Reactor. Regulation FR/EJL: ceb.

Attn:* Mr. Steven A. Varga, Chief Docket Nos> 50...:280 Operating.Reactors Branch No. 1 50-281 Division Of Licensing 50-338 U.S. Nuclear Regulatory.Commission 50-'339' Washington,* D;C .. 20555, License* Nos~

DPR-37 NPF-4 NPF-7

Dear Mr. Denton:

  • SURRY AND NORTH ANNA POWER

My letter to you, dated May 12, 1980 (Serial No. 384), on this subject transmitted the. Vepco Topical Report VEP-FRD-36, "Control Rod Reactivity Worth Determination By the. Rod Swap Technique." Since that date,*. we* have had several opportunities to discuss the contents of* that report with members of your staff. As a result of these discussions' we would like to. cqnfirm the agreement reached' with your staff regarding the. review criteria that will be. used* to. evaluate the* results. of rod

  • swap tests*, and the* administration* of the physics test. program should deviations occur. This material is enclosed as Attachment I.

Additionally,* as indicated to your staff, we. would like. to .

modify the contents of Table A.2 of the report. This table outlines the startup physics . testi,ng pr.ogram with rod' swap and is enclosed' as Attachment II.

e e vrnorn1A ELEcTRrc AND PowER CoMPANY To Mr. H. R. Denton* P_age 2 **

Should there be any, additional questions on this .subject~

please contact Dr. E. J. Lozito. (804'-771-4375) '.

W. N. Thomas.*

Vice President, *.

Fuel* Resources*.

  • Enclosures*.
  • cc:. Mr~. Robert A. Clark,*. Chief Operati_ng, Rea~tors Branch .No ... 3 Mr. B. Joe:Youngblood~ Chief*

Licensing, Branch. l Division.* of Licensing*

e ATTACH.MENT I ROD SWAP TEST RESULTS.REVIEW CRITERIA

Level I a) For the reference bank 1 ll (%) I"' .:'5_ 10%

b) For each test bank 1 ll (%) I < 1s%

or Ill (pcm) I* .:'5_ 100 pcm whichever is greater Remedial Action:

Each discrepancy shall be reviewed by the Station Nuclear. Safety and Operating Connnittee. Final resolution shall. be based on the composite of plant startup data B4d an evaluation of the impact of the. discrep2.Ilcy .

on the results of the analyses of the applicable. events considered in the.

FSAR. Based on the results of this review, the Cmmrtittee may decide to perform additional testing. This additional testing may be a repeat of the original test or the performance cf. oth2r approprial:e confirmatory.

tests.

Level II

< 10%

Total Remedial Action:

The reactivity worth of control rod banks D thru A shall be measured (a.'"ld also the remainder of the rod banks to N-1 if required) by successive insertion using the dilution/boration technique. This will be done in order to validate the results of the calculational models used to predict the control rod bank reactivity worths.

-1:As defined in Section 4 of VEP-FRD-36.

e e

)

ATTACHMENT II HOT ZERO POWER STARTUP PHYSICS TESTING PROGRAM WITH ROD SWAP

e TABLE A. 2 HOT ZERO POWER STARTUP PHYSICS TESTING PROGRAM WITH ROD SWAP Reactivity Computer Checkout Boron Endpoint - ARO Temperature Coefficient - ARO M/D Flux Map - ARO Reference Bank Worth Boron Endpoint - Reference Bank In Temperature Coefficient - Reference Bank In M/D Flux Map - Rodded Control Rod Bank Worths (Control and Shutdown)