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MONTHYEARML20151E8051987-02-0202 February 1987 Settlement of SWS Piping - Intake Structure to Valve Pit. W/Four Oversize Encls Project stage: Other IR 05000412/19870021987-03-0909 March 1987 Resident Insp Rept 50-412/87-02 on 870117-0228.Violation Noted:Inadequate QC Insp Plan for Insps of HVAC Equipment Seismic Supports & Subsequent Bolting Deficiencies in Such Supports.Unresolved Item Also Opened Re Two PORVs Project stage: Request ML20212N2441987-03-0909 March 1987 Forwards Addl Response to SER Confirmatory Item 2 Re Differential Settlements of Buried Pipes.W/One Oversize Figure Project stage: Other ML20214U3731987-06-0202 June 1987 Requests Addl Info on Analyses for Pipes Located Between Structures & in Embankment Slopes in Order to Complete Review of Util 861023 & 870309 Submittals,Per SER Confirmatory Issue 2 Project stage: Approval ML20236A9631987-10-26026 October 1987 Requests That Proprietary WCAP-11419, Westinghouse Setpoint Methodology for Protection Sys Beaver Valley Unit 1, Be Withheld,Per 10CFR2.790(b)(4) Project stage: Request ML20153E3881988-05-0303 May 1988 Forwards Request for Addl Info to Suppl Util 871026 Info on Differential Settlement of Buried Pipes,For Response within 60 Days Project stage: RAI ML20151E7571988-07-0808 July 1988 Provides Info to Resolve Differential Settlement of Buried Pipes,Per NRC 880503 Request for Addl Info.W/One Oversize Encl Project stage: Request ML20151Y4161988-08-23023 August 1988 Forwards Request for Addl Info Re Differential Settlement of Buried Pipes.Response within 60 Days Requested Project stage: RAI ML20205H1961988-10-24024 October 1988 Provides Addl Info Re Differential Settlement of Buried Pipes,Per 880823 Request.Ratios for 30 Inch & 24 Inch Diameter Pipes Are 60 & 48,respectively.Allowable Limit of 3 Sc Obtained from 1983 ASME III Code Paragraph NC3653.2b Project stage: Other ML20244C9261989-04-0606 April 1989 Forwards Request for Addl Info Re Differential Settlement of Buried Pipes & to Verify That Bending Compressive Stress in Pipe Due to Reported Settlement Did Not Exceed Allowable Compressive Stress Project stage: RAI ML20245H4291989-04-28028 April 1989 Confirms Plan to Conduct Site Insp as Part of Efforts to Resolve Issue of Differential Settlement of Buried Pipes. Areas to Be Inspected Includes Ongoing Settlement Monitoring & Review of Settlement Data Project stage: Approval ML20081M7841991-06-28028 June 1991 Advises That Util Plans to Monitor Settlement of Alternate Personnel Access Facility & Administrative Bldg,In Response to 910410 Ser.Markers Will Be Placed on Bldgs & Bldgs Will Be Incorporated Into Periodic Survey within Next Yr Project stage: Other 1988-05-03
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June 28, 1991
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JOHN D 5 E BF f4 w.i%,-.u mn.,*
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Nuclear Regulatory Commission Isttn:
Document Control Desk Washington, DC 20555
Subject:
Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73 Differential Settlement Of Buried Pipes (TAC 62885)
In response to your SER dated April 10, 1991, DLC plans to Isoaltor settlement of the Alternate Personnel Access Facility and the 3dministrative Building.
Within the next
- year, markers will be placed on these structures and the buildings will be incorporated into the periodic survey schedule for other site buildings.
Sincerely,
.i ice President Nuclear Group cc:
Mr.
J.
Beall, Sr. Resident Inspector Mr.
T.
T.
Martin, NRC Region I Administrator Mr.
A.
W.
DeAgazio, Project Manager Mr.
M.
L.
Bowling (VEPCO)
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