ML19290C028
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Letter Sequence Other | |
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TAC:12369, (Approved, Closed) | |
Results Other: 05000344/LER-1979-013, Forwards Confirmatory Info to NRC 791229 Question 1 Re LER 79-13 Concerning Stresses in Walls Due to Thermal Gradients. Masonry Walls Subj to Thermal Gradient Across Thickness Will Undergo Deformation.Certificate of Svc Encl, 05000344/LER-1979-015-01, /01T-0:on 791019,discovered That Piping Restraint on Concrete Block Wall Might Result in Localized Overstress Condition & Degradation of Support Function Under Design Loads.Caused by Inadequate Consideration of Piping Design, 05000344/LER-1980-007, Forwards Suppl 1 to LER 80-007/01T-0,providing Description of Engineering Review,Reportable Noncomformances & Related Evaluation Results, 05000344/LER-1980-007-01, /01T-0:on 800516,masonry Wall in Auxiliary Bldg Was Discovered Not Connected to Interfacing Structures at Top.Caused by Misinterpretation of Design Drawings.Positive Connection Being Made W/Grouted Reinforcing Steel, 05000344/LER-1983-001, Forwards LER 83-001/01T-0.Detailed Event Analysis Encl, 05000344/LER-1983-001-01, /01T-0:on 830106,field Insps & Review of Const Records Revealed as-built Conditions of knock-out Panel & wall-to-roof Connection Different than Those Considered in Previous Analyses for Three Masonry Walls.Mods Underway, ML17208A791, ML19207B551, ML19208A864, ML19209B063, ML19210C870, ML19210D585, ML19211A367, ML19211A374, ML19224D636, ML19225C762, ML19248C628, ML19249B712, ML19250C487, ML19253C727, ML19256B483, ML19256E423, ML19257A197, ML19257A200, ML19257A202, ML19257A780, ML19257A782, ML19257B266, ML19260B505, ML19262A945, ML19262A949, ML19268C263, ML19269D190, ML19274F793, ML19290C026, ML19290C028, ML19294B330, ML19296D746, ML19296D752, ML19296D933, ML19305B776, ML19308A352, ML19309C368, ML19309C371, ML19309G033, ML19309G034, ML19309G035, ML19318D060, ML19320B202, ML19320D055... further results | |
MONTHYEARML19268C2631966-10-31031 October 1966
[Table View]Compressive & Transverse Strength Tests of 8-Inch Brick Walls. Addl Info Re Masonry Walls & Certificate of Svc Encl Project stage: Other ML19269D1901979-02-28028 February 1979 Forwards Addl Info Provided by Bechtel Re Proposed Control Bldg Mod:Suppl Info on Shear Wall Specimen Test Program & Addl Info Re Lateral Stiffnesses & Response Spectra Determination.Plans Submittal of Design Mod Rept in March Project stage: Other ML19308A3521979-06-20020 June 1979 IE Bulletin 79-02,Revision 1,Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts Project stage: Other ML19256B4831979-06-21021 June 1979 Forwards IE Bulletin 79-02,Revision 1, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Action Required Project stage: Other ML19248C6281979-06-29029 June 1979 Forwards Responses to 14 of 50 Questions Submitted in NRC .Will Submit Remaining Responses by 790706. Certificate of Svc Encl Project stage: Other ML19224D6361979-07-0202 July 1979 Forwards IE Bulletin 79-14, Seismic Analysis for As-Built Safety-Related Piping Sys. Action Required Project stage: Other ML19208A8641979-07-13013 July 1979 Forwards Response to IE Bulletin 79-02,Revision 1,re Seismic Category I Piping Sys Support Base Plates Which Use Concrete Expansion Bolts Project stage: Other ML19274F7931979-07-18018 July 1979 Forwards IE Bulletin 79-14,Revision 1, Seismic Analysis for As-Built Safety-Related Piping Sys Project stage: Other ML19225C7621979-07-19019 July 1979 Forwards Corrected Copy of IE Bulletin 79-14,Revision 1, Seismic Analysis for As-Built Safety-Related Piping Sys Project stage: Other ML19207B5511979-08-15015 August 1979 Forwards IE Bulletin 79-14,Suppl 1, Seismic Analysis for As-Built Safety-Related Piping Sys. Action Required Project stage: Other ML19249B7121979-08-20020 August 1979 Forwards IE Bulletin 79-02,Revision 1,Suppl 1,Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Action Required Project stage: Other ML19209B0631979-09-0505 September 1979 Forwards Responses to NRC 790817 Questions,Transmitted in NRC to Aslb.Includes Info Re Computer Codes for Evaluation of Mods to Control,Auxiliary,Fuel Bldg Complex & Vertical Natural Frequencies Project stage: Other ML19256E4231979-10-22022 October 1979 Confirms NRC 791022 Telcon W/Wj Lindblad Re Facility Steam Generator Tube Defects & Concrete Block wall-pipe Hanger Structural Problems.Discusses Action to Be Taken by Licensee Project stage: Other ML19210C8701979-10-22022 October 1979 Submits Followup to 791019 Rept of Inadequate Pipe Restraint on Spent Fuel Pool Cooling Sys.Plant Presently in Cold Shutdown.Will Complete Corrective Action Before Mode Change Project stage: Other 05000344/LER-1979-015-01, /01T-0:on 791019,discovered That Piping Restraint on Concrete Block Wall Might Result in Localized Overstress Condition & Degradation of Support Function Under Design Loads.Caused by Inadequate Consideration of Piping Design1979-11-0404 November 1979 /01T-0:on 791019,discovered That Piping Restraint on Concrete Block Wall Might Result in Localized Overstress Condition & Degradation of Support Function Under Design Loads.Caused by Inadequate Consideration of Piping Designs Project stage: Other ML19250C4871979-11-0808 November 1979 Forwards IE Bulletin 79-02,Revision 2, Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts. Action Required Project stage: Other ML19260B5051979-11-16016 November 1979 Forwards IE Info Notice 79-28, Overloading of Structural Elements Due to Pipe Support Loads. No Response Required Project stage: Other ML19296D9331979-11-21021 November 1979 Forwards Response to IE Bulletin 79-02,Revision 1,Supp 1. Repairs Completed on Five of 11 Pipe Supports W/Anchor Bolt Safety Factors Less than Two, & Eight of 69 Supports W/Factors Less than Five.Revision 2 Response Forthcoming Project stage: Other ML19210D5851979-11-21021 November 1979 Forwards Suppl 1 to RO 79-015 Re Sample Calculations & Tension & Shear Transfer Project stage: Other ML19262A9491979-11-24024 November 1979 Evaluation of Tests of Tensile Bond Strength of Concrete Block-to-Fill in Trojan Nuclear Power Plant Near Portland, Or. Supporting Documentation Encl Project stage: Other ML19253C7271979-11-30030 November 1979 Modifies ASLB Partial Initial Decision Permitting Interim Operation of Facility.Operation Will Not Resume Pending Further Order.Nrc Shall Inform ASLB of Unresolved Items Re Seismic Issues Project stage: Other ML19262A9451979-11-30030 November 1979 Rept on Testing of Composite Masonry Walls Project stage: Other ML19253C7691979-12-0101 December 1979 Notification of 791205-06 Meeting W/Util in Bethesda,Md to Discuss LER 79-15 Re Masonry Block Wall & Support Reaction Problem Project stage: Meeting ML19211C2251979-12-0404 December 1979 Ack Receipt of 791130 Order Re Interim Operation of Plant. Staff Currently Assembling Info Bearing on Seismic & Other Issues in Proceeding & Will Supplement This Info to ASLB on 791207 Project stage: Request ML19211A3741979-12-0707 December 1979 Affidavit by President of Util Explaining Unique Circumstances Facing Region & Affecting Public Need Project stage: Other ML19211A3671979-12-0808 December 1979 Forwards Affidavits of Rh Short & Dj Broehl,President & Vice President of Util,Respectively,In Response to ASLB 791130 Order.Certificate of Svc Encl Project stage: Other ML19294B3301979-12-0808 December 1979 Forwards Response to IE Bulletin 79-02,Revision 2,Items 5, 6 & 7 Project stage: Other ML20125C1751979-12-19019 December 1979 Summary of 791205-06 Meeting W/Util & Bechtel Re Discussion of LER 79-15 Wherein Certain Problems W/Masonry Block Walls & Support Reactions of Equipment/Piping Attached Thereto Were Identified Project stage: Meeting ML19290C0281979-12-20020 December 1979 Supplements Re Concrete Block Wall/Pipe Hanger Structural Problems,Subj of 791220 Discussions.States NRC Understanding That Util Will Resolve re-evaluations Per LER 79-15 Project stage: Other ML19290C0261979-12-21021 December 1979 Joint Affidavit Re Review & Evaluation of as-built Control Bldg Interim Operation.Block Wall Reaction Force Problem Must Be Satisfactorily Resolved Before Resumption of Operation.Problem Chronology Encl Project stage: Other ML19257A1971979-12-27027 December 1979 Forwards Class III Fee Re 791224 License Change Application 56 Project stage: Other ML19257A2021979-12-27027 December 1979 Forwards Util to NRC Region 5 Summarizing All Mods to Pipe Supports & Restraints.W/O Encl.Certificate of Svc Encl Project stage: Other ML19257A2001979-12-27027 December 1979 Submits Followup to RO-79-15.All Analyses & Evaluations Completed.Summary of Corrective Actions on Pipe Supports & Restraints Provided.Power Operation Will Not Resume Until Further ASLB Order Project stage: Other ML19257A7801979-12-31031 December 1979 Advises That Schedule for Implementation & Documentation of Confirmatory Testing Program Will Be Submitted Following NRC Review.Certificate of Svc Encl Project stage: Other ML19257A7821979-12-31031 December 1979 Advises of Resolution of Problems Re Steam Generators & single-wythe,mortared double-wythe & Composite Block/ Concrete Walls,As Described in LER 79-15.NRC Questions & Util Responses Encl Project stage: Other 05000344/LER-1979-015, Responds to NRC Request for Addl Info Re LER 79-15.Forwards Info Re Confirmatory Testing Program on Model double-block Masonry & Composite Walls.Schedule Will Be Established for Completion & Documentation of Results & Conclusio1979-12-31031 December 1979 Responds to NRC Request for Addl Info Re LER 79-15.Forwards Info Re Confirmatory Testing Program on Model double-block Masonry & Composite Walls.Schedule Will Be Established for Completion & Documentation of Results & Conclusions Project stage: Request ML19257B2661980-01-0909 January 1980 Forwards NRC Sample Calculation Comparing Use of Transverse Shear Force Directly from Stardyne Output W/Calculations from Displacement & Rotation Output from Same Analysis. Certificate of Svc Encl Project stage: Other 05000344/LER-1979-013, Forwards Confirmatory Info to NRC 791229 Question 1 Re LER 79-13 Concerning Stresses in Walls Due to Thermal Gradients. Masonry Walls Subj to Thermal Gradient Across Thickness Will Undergo Deformation.Certificate of Svc Encl1980-01-18018 January 1980 Forwards Confirmatory Info to NRC 791229 Question 1 Re LER 79-13 Concerning Stresses in Walls Due to Thermal Gradients. Masonry Walls Subj to Thermal Gradient Across Thickness Will Undergo Deformation.Certificate of Svc Encl Project stage: Other ML19296D7521980-02-13013 February 1980 Rept on Design Criteria for Masonry Walls Project stage: Other ML19296D7461980-02-13013 February 1980 Forwards Rept on Design Criteria for Masonry Walls Project stage: Other ML19296D7381980-02-22022 February 1980 Forwards Safety Evaluation Re Concrete Masonry Wall Design Criteria for Transverse Loadings & Rept on Design Criteria for Masonry Walls. Discussion Will Take Place During Wk of 800225 Project stage: Approval ML19296D7431980-02-22022 February 1980 Safety Evaluation Re Concrete Masonry Wall Design Criteria for Transverse Loadings Project stage: Approval ML19344D2271980-03-0505 March 1980 Informs That Testing & Grouting Program Completed 800213. Estimates 86% Fill in Collar Joint.No Wall Areas Contain Continuous Collar Joint Voids Project stage: Other ML19344D2681980-03-0606 March 1980 Forwards Info Re Values for Ultimate Compressive Strength of Masonry Assemblies.No Violation of Tech Specs Occurred as Result of Values Used in Accordance W/Uniform Bldg Code Project stage: Other ML19305B7761980-03-15015 March 1980 Forwards Comments Re App B of J Colville 800213 Rept Concerning Design Criteria of Plant Masonry Walls.Analysis Indicates That Wall 46 Has Capacity to Resist Out of Plane Loads During SSE Event.Certificate of Svc Encl Project stage: Other ML19305C3161980-03-17017 March 1980 Forwards Response to NRC Questions Presented at 800307 Meeting Re Structural Considerations for Proposed Mods to Control Bldg.Overall Modified Complex Has Available Capacity to Satisfy 1.4 Load Factor OBE Criteria Project stage: Meeting ML19309C3711980-04-0101 April 1980 Addendum 1 to Rept on Testing of Composite Masonry Walls Project stage: Other ML19309C3681980-04-0101 April 1980 Forwards Mar 1980 Addendum 1 to Rept on Testing of Composite Masonry Walls,Nov 1979. Test Results Described in Addendum Indicate That 40 Psi Is Appropriate Principle Tensile Stress Value at block-core Interface of Wall Project stage: Other ML19309G0341980-04-0808 April 1980 Response to Comments on App B of Coleville Rept of 800213 on Trojan Masonry Walls Project stage: Other ML19309G0351980-04-0808 April 1980 Comments on Review by Professor B Bresler of Evaluation of Tensile Bond & Shear Bond of Masonry by Means of Centrifugal Force,By M Hatzinikolas,J Longworth & J Warwaruk,Alberta Masonry Institute,Undated (1978-1979) Project stage: Other 1979-06-20 |
| ML19290C028 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 12/20/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| Shared Package | |
| ML19290C023 | List: |
| References | |
| TAC-12369, NUDOCS 8001090052 | |
| Download: ML19290C028 (1) | |
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December 20, 1979 Docket No. 50-344 Portland General Electric Ccepany 121 S.W. Salmon Street Portland, Oregon 97204 Attention: Mr. Charles Gooc%in, Jr.
Assistant Vice President Gentlemen:
This letter supplements qy letter of October 22, 1979, and relates to the concrete block wall - pipe hanger structural problems discussed by telephone between Mr. D. J. Broehl, Assistant Vice President, Portland General Electric Cortpany, and Mr. B. H. Faulkenberry of this office, on December 20, 1979.
Eased on this discussion, it is our understanding that prior to resuming reactor power operation you will resolve to the satisfaction of the NRC staff the reevaluations that have been performed on the single-wythe, mortared double-wythe and composite block / concrete walls as described in Licensee Event Report 79-15, its Supplements dated November 19, 1979 and December 4,1979, and a letter from D. J. Broehl to R. H. Engelken dated December 13, 1979 Should our understanding as stated above not be correct, you should notify this office promptly, in writing.
Sincerely,
- t. W R. H. Engelken Director cc:
D. J. Broehl, PGE 1729 358 8001090052---
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