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MONTHYEARML18018B1161985-09-30030 September 1985
Nine Mile Point Unit 2 - Detailed Control Room Design Review Final Summary Report Program Implementation Volume 2
Project stage: Request
ML20136D1721985-12-31031 December 1985
Forwards S&W Proprietary Calculations Re Design of Containment Downcomers Discussed During 851220 Meeting. S&W Affidavit Encl.Calculations Withheld (Ref 10CFR2.790)
Project stage: Meeting
IR 05000220/19850141985-12-31031 December 1985
Exam Rept 50-220/85-14 on 850910-12.Exam Results:All Candidates Passed.Util 851004 Comments & Recommendations to NRC Re Reactor & Senior Reactor Operator Exams on 850910 Encl
Project stage: Request
IR 05000220/19850231986-01-0808 January 1986
Insp Repts 50-220/85-23 & 50-410/85-40 on 851125-27.No Violation or Deviation Noted.Major Areas Inspected:Nuclear Matl Control & Accounting,Organization & Operation,Shipping & Receiving,Inventory & Mgt of Matls Control Sys
Project stage: Request
ML20137M3941986-01-22022 January 1986
Forwards Safety Evaluation Re Power Ascension Program Proposed Test Mods Submitted by 850821,0920,23 & 30 Ltrs. Review of Listed Test Mods Completed.Amend to FSAR for Acceptable Test Mods Requested
Project stage: Approval
ML17055B1431986-01-23023 January 1986
Forwards Proprietary S&W Calculations Re Design of Facility Containment Downcomers & Response to NRC Concerns Discussed in .Calculations Supersede Calculations Submitted on 851231.Encls Withheld (Ref 10CFR2.790)
Project stage: Other
IR 05000410/19850481986-01-24024 January 1986
Preoperational Security Program Insp Rept 50-410/85-48 on 851216-19.No Violation Noted.Major Areas Inspected:Review of Implementing Procedures for Receipt of Snm.Info Partially Withheld (Ref 10CFR2.790)
Project stage: Request
ML17055B2251986-01-31031 January 1986
Advises That Based on Review of Recent Applicant Submittals, Unbraced Downcomer Design Marginal.Although Licensing Criteria for Upset & Emergency Conditions Met,Design Adequacy for Faulted Condition Inadequately Demonstrated
Project stage: Approval
ML20140G0761986-01-31031 January 1986
Summary of 860124 Meeting W/Consultants to Discuss Adequacy of Downcomer Design in Context of Reanalysis Performed by Util.Design Marginal.Recommends Granting OL W/Listed Condition.List of Attendees Encl
Project stage: Meeting
ML20141N5311986-02-10010 February 1986
Comments on Review of Structural Adequacy of BWR Mark II Downcomers for Nine Mile Point 2 Nuclear Power Station. Allowable Moments Are Less than Calculated Applied Moment of 4914 in-kips
Project stage: Other
ML17055B2811986-02-12012 February 1986
Forwards Bd Liaw 860131 Memo to RM Bernero,Summarizing 860124 Meeting W/Consultants Re Downcomers
Project stage: Meeting
ML20141N5321986-02-14014 February 1986
Summarizes 860124 Meeting W/Nrc & EC Rodabaugh Re Structural Integrity of Facility Downcomer Design.Design Meets Licensing Requirements for Upset & Emergency Conditions
Project stage: Meeting
ML17058A5221986-03-18018 March 1986
Forwards Draft SER & NRC Consultants Repts on Downcomer Design Issue.Nrc Reviewing 860218 Exemption Request
Project stage: Draft Approval
ML17055B4471986-04-0101 April 1986
Notification of 860402 Meeting W/Util in Bethesda,Md Re Loads on Downcomers
Project stage: Meeting
ML17055B5571986-04-23023 April 1986
Summary of 860402 Meeting W/Util & S&W Re Structural Adequacy of Downcomers.Handout & List of Attendees Encl
Project stage: Meeting
ML17055B9351986-06-26026 June 1986
Forwards Draft Section 6 of Sser 3 Containing Util Request for Exemption on Downcomers
Project stage: Draft Approval
ML17055C1551986-07-31031 July 1986
Staff Requirements Memo Re Commission 860723 Briefing in Washington,Dc on Status of near-term OL Plants
Project stage: Other
ML17055C6661986-11-26026 November 1986
Requests Info to Assess Util Progress in Completing Actions Required to Meet GDC 2 & to Schedule NRC Review of Downcomer Issue,No Later than 10 Working Days Before Commission Briefing.Info Should Include Progress Since 860218
Project stage: Approval
ML20236U2261987-11-23023 November 1987
Notification of 871207 Meeting W/S&W & Util in Bethesda,Md to Discuss Downcomers for Facility
Project stage: Meeting
ML17055D4541987-12-16016 December 1987
Summary of 871207 Meeting W/Util & S&W Re Downcomers for Facility.Handout & List of Meeting Attendees Encl
Project stage: Meeting
NUREG-0808, Forwards Safety Evaluation Accepting Revised Safety Relief Valve & Condensation Oscillation Loads Per NUREG-0802 & NUREG-0808 & Temp Cutoff Value Used for Elimination of Data Base for Load Computations1988-06-29029 June 1988
Forwards Safety Evaluation Accepting Revised Safety Relief Valve & Condensation Oscillation Loads Per NUREG-0802 & NUREG-0808 & Temp Cutoff Value Used for Elimination of Data Base for Load Computations
Project stage: Approval
1986-02-12
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Text
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M Y NIAGARA R UMOHAWK NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST. SYRACUSE, N Y.13202/ TELEPHONE (315) 474-1511 December 31, 1985 (NMP2L 0570)
Ms. Elinor G. Adensam, Director BWR Project Directorate No. 3 U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Washington, DC 20555
Dear Ms. Adensam:
Re: Nine Mile Point Unit 2 Docket No. 50-410 Enclosed is a copy of two Stone & Webster Engineering Corporation's calculations pertaining to the design of the Nine Mile Point Unit 2 containment.downcomers. These calculations were discussed during our meeting with the Nuclear Regulatory Commission staff on December 20, 1985. Thete calculations are titled:
1.
Downcomer Response to SRV Air Bubble Load (F.S.I.) Number 12177.08-PX-60012, and 2.
Downcomer Analysis and Fatigue Evaluation Number MS-1869 Rev. 1 Stone & Webster Engineering Corporation has advised us that these calculations contain information which is considered to be proprietary.
In connection with Section 2.790(a)(4) of the Commission's regulations, it is hereby requested that these documents be treated by the Commission as confidential and proprietary and be withheld from public disclosures. As required by Section 2.790(b)(1), an affidavit from Stone & Webster Engineering Corporation is attached hereto in support of this request.
Very truly yours, Senior Vice President
- g. E/. u N./eacear JM/rla t a hment
/
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g xc: R. Gramm, NRC Resident Inspector I
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8601060064 e51231 3
PDR ADOCK 050 40 F. E l f e sar 8
(
r-State of New Jersey)
County of Camden
)
I, William C. Drotleff, being duly sworn according to law depose and say I am Vice President of Stone & Webster Engineering Corporation (SWEC) and that:
1.
For the reasons listed below, the material contained in SWEC Calculation Nos. MS-1869-1 and PX-60012-0 in response to the U.S. Nuclear Regulatory Commission (NRC) Safety Evaluation Re-port Confirmatory Item 13(i) which is being filed with the NRC by Niagara Mohawk Power Corporation (NMPC) in connection with its license application for Nine Mile Point Nuclear Station -
Unit 2, Docket No. 50-410, contains information considered by SWEC to be confidential information containing trade secrets and should be withheld from public disclosure.
2.
In support of its averment that the above-mentioned information is confidential, SWEC provides the following reasons:
a.
The information sought to be withheld consists of analyti-cal techniques used in the analysis of the downcomers, a design feature of the primary containment.
These tech-niques were developed by SWEC.
b.
The subject material was developed at considerable expen-diture of SWEC resources and is of substantial value to SWEC in the conduct of its business. These techniques are marketable and their disclosure could have an adverse com-mercial impact on SWEC.
It is, accordingly, the customary practice of SWEC to treat such material as confidential commercial information.
c.
To the best of my knowledge and belief, the identified material is not available from any public source and has not been made available to third parties, except in confidence.
J
=
s William C, Drotleff, being duly sworn, deposes and says that he has read the foregoing affidavit and the matters stated therein are true and cor-rect to the best of his knowledge. information, and belief.
f 2S~
L' A William C. Drotlef s
Vice President V
i Stone & Webster Engineering Corporation Sworn and subscribed before me this 27th day of December 1985 RO3 F.T C. Sl(ANNoti NOTARY FUBLIC OF NEW JERSEY t4y Ccmmission Expires S-@ildf l
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