Letter Sequence Other |
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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
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MONTHYEARML19268C2631966-10-31031 October 1966
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
[Table View] |
Text
(
pa nico
'o UNITED STATES e[ '
" g NUCLEAR REGULATORY COMMISSinN g
7; *
- y REGION V o,
g 1990 N. CALIFORNIA BOULEVARD
% * *,, *,d' SUITE 202, WALNUT CREEK PLAZA WALNUT CREE K, CALIFORNI,4 94596 October 22, 1979 Docket No. 50-344 Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon 97204 Attention: Mr. Charles Goodwin, Jr.
Assistant Vice President Gentlemen:
s.
This letter relates to the steam generator tube defects and the concrete block wall-pipe hanger structural problems discussed by telephone between Mr. W. J.
Lindblad and others of your staff and fir. J. L. Crews of this office and other NRC personnel on October 22, 1979.
Based on this discussion, it is our understanding that you are to take the following actions:
1.
Prior to plugging the leaking tubes in the "A" and "D" steam generators, you will provide the NRC with the results of your investigation to deterniine the cause(s) of the defects identified.
2.
Prior to the resumption of power operation, you will provide the NRC with your basis for concluding that operation of the plant relative to the steam generators can be safely resumed.
3.
You will complete an evaluation of all safety related pipe supports and restraints which are anchored in concrete block walls similar to RHR restaint No. 83 reported by you as being defective on October 19, 1979.
The purpose of this evaluation is to determine if any additional piping supports or restraints are not adequate to meet design basis conditions.
4.
Prior to resuming reactor power operation, you will provide the NRC with written confirmation that the evaluation of item 3 above has been completed, and that any necessary modifications and/or repairs have been satisfactorily completed.
Should our understanding as stat-d above not be correct, you should notify this office promptly in writing.
Sincerely,
{$W dk m
R. H. Engelken Director cc:
D. J. Brochl, PGE 2bd 338 C. P. Yundt, PGE 7 9110 5 0 I E'4-
