ML18219D792

Letter from Exxon Nuclear Co, Inc. to NRC, Transmitting Copies of Supplement 4 (Report) to Document XN-76-51 for Staff Review

ML18219D792
Person / Time
Site:	Cook
Issue date:	05/23/1978
From:	Owsley G Exxon Nuclear Co
To:	Lear G Office of Nuclear Reactor Regulation
References
Download: ML18219D792 (16)

Text

'6 Cg E)f(ON, NUCLEAR COIVIPANY,Inc. CO 2101 Horn Rapids Road QJ mC=c-P. O. Box 130, Richland, N'ashington 99352 Phone: (509J 943.8100 7elext 32-6353 >o

~CO~

Pl May 23, ~8 Mr. George Lear, Branch Chief Division of Operating Reactors Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555

SUBJECT:

XN-NF-76-51, Supplement 4(P), "Flow Blockage and Exposure Sensitivity Study for ENC D.,C. Cook Unit 1 Reload Fuel Using ENC WREM-II Model," May 1978

Reference:

XN-NF-76-51, Supplement 3(P), "Flow Blockage and Exposure Sensitivity Study for ENC D. C. Cook Unit 1 Reload Fuel Using ENC WREM-II Model," March 1978

Dear Mr. Lear:

This letter transmits forty (40) copies of the subject Supplement 4 (report) to document XN-76-51 for Staff review. The report supplements the informa-tion contained in Table 1.1 of the reference document regarding the uncer-tainties of the fuel rod internal pressure during the course of a loss-of-coolant accident. This additional information extends the D. C..'Cook pin pressure uncertainty from 38,000 MWD/MTM to 44,000 MWD/MTM.

Exxon Nuclear Company considers the information contained in the report XN-NF-76-51, Supplement 4(P), to be proprietary. In accordance with the Commission's regulation 10CFR2.790(b), the enclosed Affidavit, executed by our Mr. Warren Nechodom, provides the necessary information to support the withholding of the reference document from public disclosure.

Si erely, G.F. Owsley, Mana r Reload Licensing GFO:gf Enclosures As noted CC: Mr. E. Reeves (NRC)

AN AFFILIATE OF EXXON CORPORATION

I gl, l'

)

AFF IDAV IT STATE 'OF Washington st COUNTY OF Benton I, Warren Nechodom, being duly sworn, hereby say and depose:

l. I am Acting Manager, guality Assurance and Licensing, for Exxon Nuclear Company, Inc. ("ENC"),and as such I am authorized to execute this Affidavit.

h

2. I am familiar with ENC's detailed document control system and policies which govern the protection and control of information.

3. I am familiar with the document entitled XN-NF-76-51, Supplement 4(P), "Flow Blockage and Exposure Sensitivity Study for ENC D. C. Cook Unit 1 Reload Fuel Using ENC WREN-II Model," referred to as A

"Document." Information contained in this Document has been classified by ENC as proprietary in accordance with the control system and policies established by ENC for the control and protection of information.

4. The Document contains information of a proprietary and confidential nature and is of the type customarily held in confidence by ENC and not made available to the public. Based on my experience, I am aware that other companies regard information of the kind contained in the Document as being proprietary and confidential.

5. The Document has been made available to the United States Nuclear Regulatory Commission in confidence, with the request that the information contained in the Document not be disclosed or divulged.

' ~

6. The Document contains information which is vital to a competitive advantage of ENC and would be helpful to competitors of ENC when competing with ENC.

7. The information contained in the Document is considered to be proprietary by ENC because it reveals certain distinguishing aspects of fuel and fuel design analysis methods which secure competitive economic advantage to ENC by design optimization and improved marketability, and includes information utilized by ENC in its business which affords ENC an opportunity to obtain a competitive advantage over its competitors who do not or may not know or use the information contained in the Document.

8. The disclosure of the proprietary information contained in the Document to a competitor would permit the competitor to reduce its expenditure of money and manpower and to improve its competitive position by giving it extremely valuable insights into ENC 's analysis, design and testing procedures and would result in substantial harm to the competi tive position of ENC.

9. The Document contains proprietary information which is held in confidence by ENC and is not available in public sources.

10. In accordance with ENC's policies governing the protection and control of information, proprietary information contained in the Docu-ment has been made available, on a limited basis, to others outside ENC only as required and under suitable agreement providing for non-disclosure and limited use of the information.

ll. ENC policy requires that proprietary information be kept in a secured file or area and distributed on a need-to-know basis. Checks are made routinely to assure the policy procedures are being met.

0

12. This Document provides information which reveals fuel characteristics and analysis methods developed by ENC over the past several years. ENC has invested several million dollars and many man-years of effort in the related fuel development efforts. ,Assuming a competitor had available the same background data and incentives as ENC, the com-petitor might, as a minimum cost, develop the information for the same expenditure of manpower and money as ENC.

13. Based on my experience in the industry, I do not believe that the background data and incentives of ENC's competitors are sufficiently it 1

similar to the corresponding background data and incentives of ENC that is reasonable to expect such competitors would be in a position to duplicate ENC's proprietary information contained in the documents.

THAT the statements made hereinabove are, to the best of my knowledge, information, and belief, truthful and complete.

FURTHER AFFIANT SAYETH NOT.

SWORN TO AND SUBSCRIBED before me this A9 ~ day of NOTARY PUBLIC l

Kl/

f 1

~ I la'l~

get 5 1g~

p ~

r>

k E~

lt h I 4

XN-NF-76-51 Supplement 4(P)-

ISSUE DATE: 5/24/78 FLOW BLOCKAGE AND EXPOSURE SENSITIVITY STUDY FOR ENC D. C. COOK UNIT 1 RELOAD FUEL USING ENC WREM-I I MODEL Prepared by G ~ C. Cooke

~j ('A.

APPRQYED:

K C.

PrX Gal s-0-1r raith, Manager APPROVED:

G. A. Sofar anaggr Nuc ar Safety Engineering Nuclear ue s Engineering APPROVED: Z ~~~ ' > /~11+~APPROVED:

. S. Nechodo , Mana er G. J. Busselman, nager Contract Performance Licensing. and Compliance NOTICE This document contains information proprietary to Exxon Nuclear Company, Inc.; it is submitted in confidence and is to'be used solely for the'purpose for which it is furnished and returned upon request.

This document and such information is not to be reproduced, trans.

mitted, disclosed or used otherwise, in whole or in part, without the written authorization of Exxon Nuclear Company, Inc.

E)5(ON NUCLEAR COMPANY, Inc.

XN-NF-76-51 Supplement 4(P)

This supplement to Document XH-76-51 provides the results of an analysis extending the pin pressure uncertainty analysis from 38,000 MWD/MTM to 44,000 MWD/MTM. These results are used in the ECCS analysis for the Donald C. Cook Unit 1 plant. The 38,000 fuel exposure limit was the highest exposure for which the pin pressure was reported in XN-NF-76-51, Supplement 3(P). The analysis results are provided to justify the limiting peaking factor for localized fuel exposures in Exxon Nuclear-provided fuel up to 44,000 MWD/MTM. The information contained in this Supplement adds to the information contained in Table 1.1 of XN-NF-76-51, Supplement 3(P).

Page 1 of 2 Use, reproduction, transmittal or disclosure of the above information is subject to the restriction on the first or title page of this document.

0

(

I I

I ~

t~

I

TABLE 1.1 (Continued from Table 1.1 of XN-NF-76-51, Supp. 3(P))

D. C. COOK PIN PRESSURE UNCERTAINTIES BEGINNING OF LIFE TO 44,000 ~~)) PEAK PELLET EXPOSURE ENC/NRC Base Pressure = 605 PSID C

~ PEAK PELLET BURNUP, MWD/MTM 44,000 0

0 0 ~ UNCERTAINTIES, PSI0 0

0 4 0 IO Initial Fill Gas + 0+26 Q

Data Extrapolation +0+5 0 3 Plastic Strain -13+ 4 0 4 +16 0 Fuel Plenum 0 4 0 w

0 Sorbed Gas Release +9+9 0 C Densification -41 4

~0 4 Fuel Swelling +77 +77 0 Fission Gas Release +308 +308 F Rod Growth -25 + 7 4

4 Elastic Compression + 0 + 5

0. 0 + 0 + 5 0

0 3 Thermal Creep C

3 0 ~ TOTAL PIN PRESSURE CHANGE FROM +322 31 7 IA BASE CASE -322 4E 0

0

~ RUPTURE PRESSURE, PSID C/)

C OC Nominal 922 I Maximum 1244 III l1 Minimum 600-8 Ch et'

~ FLOW BLOCKAGE Vl Nominal 65K Maximum 761o Ml nl mum 23K

XN-NF-76-51 Supplement 4(P)

DISTRIBUTION GC Cooke RJ Ehlers KP Galbraith WS Nechodom GF Owsley GA Sofer JG Feinstein (AEP)

RH Dischinger (GA)

USNRC (40)

Document Control (]O)

0 e ro

)

C

t, ~% ~EOgp~

P UNITED STATES NUG~R REGULATORY COMiAISSION

%AS)IINGTON, D. C. 20555 l

BWE 3

~ %*4 '+,

I'hose Listed Below 1978'OPICAL'EPORT DISTRIBUTION.

Vendor: EXXON NUCLEAR COM ANY, iNC.

Report Identification Symbol;.

Proprietary X -NF- - (P) Non-Proprietary

. Non-Proprietary Report

'ersion of (P) (HP) tleFlow Blockage and Exposure Sensitivity, Study for ENC D. C. Cook Unit 1 Reload Fuel using.ENC NREM-.II Model Hew Topical Report Supplemental Information to Existing Topical Report Supplement 4 (P Approved Topical Report

'DC fl igltt ~231l 78 Date Recei ved =

This memo is distributed as shown below to in orm recipients of the availability of the report. The number of copies, if appropriate, is indicated. Additional or reference copies may be obtained from the Subject File in the Docket Room (Bethesda Bldg. 016)

Exxon 'cal Report DISTRIBUTION Subject F 'le

'tr (Docket Fj le)

W/ -

R.

T. Speis Regulatory Program Manager Denise V.

D.

Stel lo+>

Eisenhut@p 1

2 D. Ross T. Novak I

~+ 1 .

NSIC

<<~<O Skovhol t tl. Butler R. Check ¹'C+ 1

, VoACRS R.*II. Houston R. Baer ~f 1 Z. Rosztocz>>

,ASLB C. Heltemes L. Shao R. Tedes co ~~

. ASLAP H. Denton B. Grimes V. Benaroya¹ SD W. Gammill K. Goller G. Lainas ISE C. Stepp T. Carter T. Ippol 1 to ~~+

'. S. Hanauer L. Hulman A. Schwencer F. Rosa R. DeYoung R. Yollmer D. Ziemann R. Bosnak F. llilliams D. Bunch Davis L. Kornbl i th~1~

D.

- J. Stol z . J. Collins G. Lear >7~/Ale S. Meiss ~~~1 K. Kniel tl. Kreger R. Reid C; Berl inger Y~

0. Parr M. E)'nst J. Knight N ~ Lauben ~/'2 S. Varga J. Youngblood S. Pawlicki F. Coffman'C g+

D. Yassallo R. Ballard I. Sihweil . 4-781530038

~

f

~

-F