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Northem States Power Company 414 Necouet Mall Moneapohs, Mannesota 55401 Telephone (612) 330-5500 February 3, 1983 Director Office of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306             DPR-60 Submittal of Proprietary Upper Plenum Injection LOCA Model In response to your request, dated November 4, 1982, the attached analytical Loss of Coolant Accident (LOCA) model description is being submitted. This model was developed to address the NRC's concern with low pressure safety injection (LPSI) water being injected into the upper plenum and analyzed to be injected into the loops. The attached model analytically injects the low pressure safety injection water into the upper plenum of the vessel. The results confirm that analyzing the injection of LPSI water into the loops is conservative.
Northem States Power Company 414 Necouet Mall Moneapohs, Mannesota 55401 Telephone (612) 330-5500 February 3, 1983 Director Office of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Submittal of Proprietary Upper Plenum Injection LOCA Model In response to your request, dated November 4, 1982, the attached analytical Loss of Coolant Accident (LOCA) model description is being submitted. This model was developed to address the NRC's concern with low pressure safety injection (LPSI) water being injected into the upper plenum and analyzed to be injected into the loops. The attached model analytically injects the low pressure safety injection water into the upper plenum of the vessel. The results confirm that analyzing the injection of LPSI water into the loops is conservative.
As discussed in our December 10, 1982 letter, we are responding only with an Exxon model since no more than one low reactivity Westinghouse assembly will be used with the Exxon reloads.
As discussed in our {{letter dated|date=December 10, 1982|text=December 10, 1982 letter}}, we are responding only with an Exxon model since no more than one low reactivity Westinghouse assembly will be used with the Exxon reloads.
The attached report, XN-NF-79-49(P) Rev 1, is proprietary. An Exxon Nuclear Company (ENC) affidavit of Richard B Stout states the basis for exemption from public disclosure of the ENC document XN-NF-79-49(P) l         Rev 1 in accordance with 10 CFR 2.790(b)(1)(ii).
The attached report, XN-NF-79-49(P) Rev 1, is proprietary. An Exxon Nuclear Company (ENC) affidavit of Richard B Stout states the basis for exemption from public disclosure of the ENC document XN-NF-79-49(P) l Rev 1 in accordance with 10 CFR 2.790(b)(1)(ii).
D d M w.
D d M w.
David Musolf l         Manager - Nuclear Supp t Services l
David Musolf l
DMM/TMP/js cc: Regional Administrator-III, NRC NRR Project Manager, NRC NRC Resident Inspector                             g I G Charnoff                                         v I
Manager - Nuclear Supp t Services l
Contains 10 CFR 2.790 Proprietary Information l
DMM/TMP/js cc: Regional Administrator-III, NRC NRR Project Manager, NRC I
l   8302090415 830203 i
NRC Resident Inspector g
PDR ADOCK 05000282 l   P                 PDR t                                                     _
G Charnoff v
I Contains 10 CFR 2.790 Proprietary Information l
l 8302090415 830203 i
PDR ADOCK 05000282 l
P PDR t


r 4
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AFFIDAVIT STATE OF Washington )
AFFIDAVIT STATE OF Washington )
ss.
ss.
COUNTY OF Benton       )
COUNTY OF Benton
)
I, Richard B. Stout, being duly sworn, hereby say and depose:
I, Richard B. Stout, being duly sworn, hereby say and depose:
: 1. I am Manager, Licensing and Safety Engineering, for Exxon Nuclear Company, Inc. (" ENC"), and as such I am authorized to execute this     ,
1.
Affidavit.
I am Manager, Licensing and Safety Engineering, for Exxon Nuclear Company, Inc. (" ENC"), and as such I am authorized to execute this Affidavit.
: 2. I am familiar with ENC's detailed document control system and policies which govern the protection and control of information.
2.
: 3. I am familiar with the document XN-NF-79-49(P), Revision 1, entitled " REFLEX /UPI: An Analytical Model to Calculate Reflood Rates for PWRs with Upper Plenum Injection," referred to as " 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.
I am familiar with ENC's detailed document control system and policies which govern the protection and control of information.
: 4. The Document contains information of a proprietary and con-fidential 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.
3.
: 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 du alged.
I am familiar with the document XN-NF-79-49(P), Revision 1, entitled " REFLEX /UPI: An Analytical Model to Calculate Reflood Rates for PWRs with Upper Plenum Injection," referred to as " 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 con-fidential 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 du alged.
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: 6. The Document' contains information which is vital to a com-petitive advantage-of ENC and would be helpful to competitors of ENC when competing with ENC.
The Document' contains information which is vital to a com-petitive advantage-of ENC and would be helpful to competitors of ENC when competing with ENC.
                              '7.
'7.
The information contained in the Document is considered to be proprietary by ENC because it . reveals certain distinguishing aspects 'of safety analysis methods which secure competitive economic advantage to ENC for fuel 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.
The information contained in the Document is considered to be proprietary by ENC because it. reveals certain distinguishing aspects 'of safety analysis methods which secure competitive economic advantage to ENC for fuel 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 comp'etitor to reduce its expenditure of money and manpower and to improve its competitive position by giving'it extremely valuable insights into safety analysis methods, and would result in substantial harm to the competitive position of ENC.
8.
: 9. The Document contains proprietary information which is held in confidence by ENC and is not available in public sources.
The disclosure of the proprietary information contained in the Document to a competitor would permit the comp'etitor to reduce its expenditure of money and manpower and to improve its competitive position by giving'it extremely valuable insights into safety analysis methods, and would result in substantial harm to the competitive position of ENC.
: 10. In accordance with ENC's policies governing the protection and control of information, proprietary information contained in the Document has i
9.
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.
The Document contains proprietary information which is held in confidence by ENC and is not available in public sources.
l
10.
: 11. ENC policy requires that proprietary information be kept in a l                 secured file or area and distributed on a need-to-know basis.
In accordance with ENC's policies governing the protection and control of information, proprietary information contained in the Document has i
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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.
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ENC policy requires that proprietary information be kept in a l
secured file or area and distributed on a need-to-know basis.
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: 12. This Document provides information which reveals safety analysis methods developed by ENC ~ over. the past several years.         ENC has invested millions of dollars and many man-years of effort in developing the analysis methods revealed in - the Document.         Assuming a competitor had available the same background data and. incentives as ENC, the competitor might, at a minimum, develop the information for the same expenditure of manpower and. money as ENC.
: 12. This Document provides information which reveals safety analysis methods developed by ENC ~ over. the past several years.
: 13. Based on my experience in the industry,' I do not believe that the background data and incentives of ENC's competitors are sufficiently similar to the corresponding background data and incentives of ENC to reasonably expect such competitors would be in a position to duplicate ENC's proprietary information contained in the Documfnt.
ENC has invested millions of dollars and many man-years of effort in developing the analysis methods revealed in - the Document.
Assuming a competitor had available the same background data and. incentives as ENC, the competitor might, at a minimum, 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 similar to the corresponding background data and incentives of ENC to reasonably expect such competitors would be in a position to duplicate ENC's proprietary information contained in the Documfnt.
THAT the statements made hereinabove are, to the best of my knowledge, information, and belief, truthful and complete.
THAT the statements made hereinabove are, to the best of my knowledge, information, and belief, truthful and complete.
FURTHER AFFIANT SAYETH NOT.
FURTHER AFFIANT SAYETH NOT.
                                                          ~
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SWORN TO AND SUBSCRIBED before me this       2. day of I4-{1F
SWORN TO AND SUBSCRIBED before me this
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Latest revision as of 18:01, 20 December 2024

Forwards XN-NF-79-49(P),Rev 1, Reflex/Upi:Analytical Model to Calculate Reflood Rates for PWRs W/Upper Plenum Injection, Per NRC 821104 Request.Affidavit Encl.Rept Withheld (Ref 10CFR2.790)
ML20028G496
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 02/03/1983
From: Musolf D
NORTHERN STATES POWER CO.
To:
Office of Nuclear Reactor Regulation
Shared Package
ML19303B522 List:
References
NUDOCS 8302090415
Download: ML20028G496 (4)
v • d • e


Text

{{#Wiki_filter:i - ] ] Northem States Power Company 414 Necouet Mall Moneapohs, Mannesota 55401 Telephone (612) 330-5500 February 3, 1983 Director Office of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Submittal of Proprietary Upper Plenum Injection LOCA Model In response to your request, dated November 4, 1982, the attached analytical Loss of Coolant Accident (LOCA) model description is being submitted. This model was developed to address the NRC's concern with low pressure safety injection (LPSI) water being injected into the upper plenum and analyzed to be injected into the loops. The attached model analytically injects the low pressure safety injection water into the upper plenum of the vessel. The results confirm that analyzing the injection of LPSI water into the loops is conservative. As discussed in our December 10, 1982 letter, we are responding only with an Exxon model since no more than one low reactivity Westinghouse assembly will be used with the Exxon reloads. The attached report, XN-NF-79-49(P) Rev 1, is proprietary. An Exxon Nuclear Company (ENC) affidavit of Richard B Stout states the basis for exemption from public disclosure of the ENC document XN-NF-79-49(P) l Rev 1 in accordance with 10 CFR 2.790(b)(1)(ii). D d M w. David Musolf l Manager - Nuclear Supp t Services l DMM/TMP/js cc: Regional Administrator-III, NRC NRR Project Manager, NRC I NRC Resident Inspector g G Charnoff v I Contains 10 CFR 2.790 Proprietary Information l l 8302090415 830203 i PDR ADOCK 05000282 l P PDR t

r 4 AFFIDAVIT STATE OF Washington ) ss. COUNTY OF Benton ) I, Richard B. Stout, being duly sworn, hereby say and depose: 1. I am Manager, Licensing and Safety Engineering, for Exxon Nuclear Company, Inc. (" ENC"), and as such I am authorized to execute this Affidavit. 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 XN-NF-79-49(P), Revision 1, entitled " REFLEX /UPI: An Analytical Model to Calculate Reflood Rates for PWRs with Upper Plenum Injection," referred to as " 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 con-fidential 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 du alged. u

. c j 6. The Document' contains information which is vital to a com-petitive 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 safety analysis methods which secure competitive economic advantage to ENC for fuel 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 comp'etitor to reduce its expenditure of money and manpower and to improve its competitive position by giving'it extremely valuable insights into safety analysis methods, and would result in substantial harm to the competitive 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 Document has i 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. l 11. ENC policy requires that proprietary information be kept in a l secured file or area and distributed on a need-to-know basis. %e% -,, -w-o'e-1r -'-w-- - - -u- -,w,u - www e e- -dw-wwm ---Tvmv--m eye e c-c. -,,.se-g-- --we m-d +-E te - r1-7- ---"z-+ 7-- v

3

12. This Document provides information which reveals safety analysis methods developed by ENC ~ over. the past several years.

ENC has invested millions of dollars and many man-years of effort in developing the analysis methods revealed in - the Document. Assuming a competitor had available the same background data and. incentives as ENC, the competitor might, at a minimum, 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 similar to the corresponding background data and incentives of ENC to reasonably expect such competitors would be in a position to duplicate ENC's proprietary information contained in the Documfnt. THAT the statements made hereinabove are, to the best of my knowledge, information, and belief, truthful and complete. FURTHER AFFIANT SAYETH NOT. ? j' i i ~ l]((f) ~ f'iC} lj {l ' Uk. h - SWORN TO AND SUBSCRIBED before me this

2. day of I4-{1

,19 h. F t h-..N\\ bb NOTARY PUBLIC w r- --}}

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