Letter Sequence Meeting |
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Results
Other: ML18113A966, ML18113A996, ML18114A612, ML18114A720, ML19207B079, ML19224C794, ML19225C064, ML19241B211, ML19246A721, ML19261C984, ML19269D615, ML19289F676, ML19344D736, ML20244A550, ML20244A556, ML20244A647
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MONTHYEARML18113A9961979-03-13013 March 1979
Order to Show Cause Re Potentially Deficient Piping Design. Orders Facility to Be Placed in Cold Shutdown within 48-h
Project stage: Other
ML19282C6771979-03-15015 March 1979
Summary of 790308 Meeting W/S&W to Discuss Pipe Stress Calculations Using Pipestress Code
Project stage: Meeting
ML18113A9671979-03-15015 March 1979
Notification of 790316 & 17 Meeting W/S&W in Bethesda,Md to Discuss Reinstating Operation at Facilities Which Received Shutdown Orders on 790313
Project stage: Meeting
ML18113A9661979-03-20020 March 1979
Summarizes 790320 Telcon W/S&W Re Future Actions to Resolve Outstanding Seismic Concern of Five Shutdown Plants.Requests Reanalysis Results of safety-related Piping Sys & Supports
Project stage: Other
ML19263D8341979-03-26026 March 1979
Discusses 790301 Telcon W/Util & S&W.Nrc Requested Copy of Pipestress Computer Code to Compare W/Nupipe.S&W Stated Policy of Not Releasing Codes or Calculations.Meeting on 790308 for S&W to Bring Pipestress to NRC for Review
Project stage: Meeting
ML18114A5381979-03-29029 March 1979
Assigns Responsibility for Prompt Meeting Notification Re 790313 Show Cause Orders
Project stage: Meeting
ML20244A5561979-03-31031 March 1979
Answer to NRC 790313 Order to Show Cause.Will Reanalyze Seismic Loads on Piping Sys & Will Modify Sys Where Necessary.Expects to Submit Documented Results by 790424. Believes NRC Should Examine S&W Analyses
Project stage: Other
ML20244A5501979-03-31031 March 1979
Forwards Formal Util Response to NRC 790313 Order to Show Cause Re Potentially Unsafe Piping Sys
Project stage: Other
ML19261C9841979-04-0202 April 1979
Forwards Description of Info to Be Documented for NRC Review for Facility.Requests Schedule for Submittal of This Info Prior to Plant Startup
Project stage: Other
ML19344D7361979-04-10010 April 1979
Record of Telcon W/D Ford (Ucs) on 790320 Re Chronology of NRC Activities Re Pipestress Issue
Project stage: Other
ML19289E9721979-04-10010 April 1979
Summary of 790329-30 Meeting W/Util & S&W in Boston,Ma Re Progress to Date & Early Analysis of Pipe Stresses in safety-related Sys
Project stage: Meeting
ML19270G5371979-04-11011 April 1979
Delineates Criterion to Develop plant-specific Info Packages on Site Visits
Project stage: Request
ML20244A6471979-04-17017 April 1979
Licensees Response to 790402 Request of PA Public Util Commission for Hearing & Petition to Intervene Re 790313 Show Cause Order.Urges NRC to Hold Ruling in Abeyance. Certificate of Svc Encl
Project stage: Other
ML19289F0811979-04-20020 April 1979
Summary of 790411-12 Meeting W/Util & S&W in Boston,Ma Re Status of Reanalysis Efforts & Review of Packages Completed to Date
Project stage: Meeting
ML18114A6121979-05-18018 May 1979
Summarizes Procedures & Calculational Techniques Used in Reanalysis of Piping Sys Designed W/Shock II Computer Program.Reanalysis Will Satisfy 790313 Order to Show Cause
Project stage: Other
ML19224C7941979-05-18018 May 1979
Requests Addl Info in Order for NRC to Review Proposed Amplified Response Spectra Using Soil Structure Interaction
Project stage: Other
ML19269D6151979-05-23023 May 1979
Responds to NRC .Forwards Amplified Response Spectra Based on Soil Structure Interaction.Details Result of Analysis of Small Strain Valves of Plus or Minus 50%
Project stage: Other
ML18114A7201979-05-25025 May 1979
Discusses Position Re Use of Soil Structure Interaction for Seismic Pipestress Analyses Being Performed.Approves Methodology,Provided That Seismic Stresses Calculated Are Increased by Factor of 1.5
Project stage: Other
ML19246A7211979-05-25025 May 1979
Submits Identified Areas to Be Addressed During Seismic Pipestress Reanalysis
Project stage: Other
ML19241B2111979-05-25025 May 1979
Discusses Areas to Be Covered in Interim or Final Rept on Seismic Pipestress Reanalysis,Including Stresses Due to Seismic Anchor Movements,Support Stiffness Accountability & Criteria for Pipe Support & Design
Project stage: Other
ML19289F6761979-06-11011 June 1979
Discusses Present Status of Piping Sys Reanalysis.Reanalysis Complete & Two Hydraulic Snubbers Installed.No Pipe Is Overstressed in Event of Safe Shutdown Earthquake.Rept Supporting 790706 Request to Be Submitted by 790618
Project stage: Other
ML19241B8541979-06-14014 June 1979
Summary of 790524 Meeting W/S&W & Util in Bethesda,Md Re Amplified Response Spectra Developed W/Consideration of Soil Structure Interactions
Project stage: Meeting
ML19225C0641979-07-23023 July 1979
Requests Termination of 790313 Order to Show Cause Re safety-related Piping Sys
Project stage: Other
ML19249A7131979-08-0303 August 1979
Draft Safety Evaluation Supporting Resumption of Operation Per Required Mods to Seven Supports,Addition of Three Others & Approval of Two Supports Not Yet Found to Be Acceptable
Project stage: Draft Approval
ML19249A7091979-08-0303 August 1979
Draft Order Not Requiring Continued Shutdown of Facility or Termination Proceeding Initiated by 790313 Order.Analysis & Mod to Fuel Pool Cooling & Purification Sys Required Before Further Use
Project stage: Draft Other
ML19249A7041979-08-0303 August 1979
Forwards for Consideration Draft Order & Draft Safety Evaluation Re Facility Shutdown Per Lack of Assurance That Analysis of Piping Sys for Seismic Loads Provided Proof of Safe Shutdown During Seismic Event
Project stage: Draft Approval
ML19207B0861979-08-0808 August 1979
Safety Evaluation Supporting Order Terminating Proceeding Initiated by 790313 Show Cause Order Re Cold Shutdown Condition.Facility May Resume Power Operation
Project stage: Approval
ML19207B0791979-08-0808 August 1979
Order Terminating Proceeding Initiated by 790313 Show Cause Order Re Cold Shutdown Condition
Project stage: Other
1979-04-02
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION j f. Y )f j WASHINGTON, D. C. 20555
???L[),l April 10, 1979 Docket No. 50-334 LICENSEE: Duquesne Light Company FACILITY: Beaver Valley Power Station, Unit No.1 MEETING
SUMMARY
- PIPE STRESS ANALYSIS REVIEW The staff met with the licensee and Stone and Webster Engineering Corpo:ation (S&W) at the S&W offices in Boston, Massachusetts on March 29 and 30, 1979 to review the progress to date and early analyses of pipe stresses in safety related systems.
The list of attendees is attached as Enclosure 1.
S&W presented an overview of their efforts during the past two weeks.
The piping systems are being identified by the S&W designation as Q1, Q2, and Q3 systems.
This designation corresponds to the quality group listing as follows:
S&W NRC Q1 Quality Group A Q2 Quality Group B Q3 Quality Group C & D The piping systems are also being identified by those that were analyzed by hand calculations and those by SH0CK 2.
By Duquesne Light Company's (DLC) direction, S&W is putting priority efforts on systems for shutdown and for safety injection.
Quality group D systems which used SHOCK 2 analysis will be analyzed later.
S&W is also verifying the MSK's to as-built drawings (MSK= Mechanical Sketch; ESK= Electrical Sketch) and modifying the computer decks where required to accurately model the systems to be analyzed. Most of the pipe stress computer runs have been made but not checked against the as-builts. Whenever changes are required due to changes in the as-builts, the piping systems involved are being reanalyzed.
Some runs have been made on NUPIPE due to input or modeling problems with PIPESTRESS/SH0CK 3.
2P53 356 7905290 M
. April 10, 1979 Limited review has begun on the hangers, supports, and component nozzels. A flow diagram of the review underway was discussed and it was specifically noted that the BVPS reanalysis is not currently considering soil structure interaction as an interim fix.
In a discussion of the systems being reviewed, S&W categorized piping systems at the BVPS as being analyzed generally as 6 inches and under by hand calculations, 2 inches and under was field run and hand calculated, and seismic category piping over 6 inches by PIPESTRESS/SH0CK 2.
Each piping system involved in the review is being identified along with the specific analysis method used. Where records fail to show which method was used, a decision will be made by DLC on reanalysis by PIPESTRESS/SH0CK 3.
In the course of discussions, two engineering packages were reviewed on completed pipestress analyses.
The as-built drawings for all safety injection and shutdown piping was reviewed as well as the list of effected systems for completeness.
~
D. Wigginto ject Manager Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Attendance List 2M3 357
ENCLOSURE ATTENDANCE LIST MEETING WITH DUQUESNE LIGHT COMPANY MARCH 29 AND 30, 1979 Duquesne Light Company W. H. Sikorski E. F. Kurtz N. Tonet J. J. Carey D. Williams Stone & Webster J. M. Cumiskey D. King R. M. Campbell EG&G D. K. Morton Nuclear Services Corporation H. J. Thailer NRC 3
g E. V. Imbro F. J. Miraglia D. L. Wigginton R. G. LaGrange K. Herring E. G. Igne D. Rathbun
Meeting Sumary for Matters Relating to March 13, 1979 April 10, 1979 Show Cause Orders Docket Files Program Support Branch P-428 (EBCPDR3 Pr:ncipal Staff Participants Local PDR ORB Rdg NRR Rdg C. Kammerer J. Fouchard H. Denton E. Case V. Stello R. Mattson R. Boyd R. DeYoung D. Eisenhut R. Vollmer R. Denise J. P. Knight A. Schwencer D. Ziemann T. Ippolito R. Reid P. Check G. Lainas D. Davis B. Grimes V. Noonan F. Shauer R. Bosnak L. Heller K. Eichman D. Brinkman C. Nelson D. Neighbors P. Polk D. Wigginton OELD
" ' ~ 3 b g C)
I T
J. Scinto J. Souder (LPDR - advance copy)
I&E (3)
M. W. Peranick, I&E OSD (3)
S. Showe, I&E E. Jordon, I&E C. Parrish R. Ingram S. Sheppard P. Kreutzer R. Fraley, ACRS (16)
Race;::icnis: - for meetings held in Bethesda