ML19262C087
| ML19262C087 | |
| Person / Time | |
|---|---|
| Issue date: | 01/08/1980 |
| From: | Shao L Office of Nuclear Reactor Regulation |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8001280278 | |
| Download: ML19262C087 (7) | |
Text
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ga arogk' UNITED STATES
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8 j; i NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 j
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JNiUARY 8 1980 MEMORANDUM FOR:
D. G. Eisenhut, Acting Director Division of Operating Reactors FROM:
L. C. Shao, Acting Assistant Director for Engineering Programs, D0R
SUBJECT:
SUMMARY
OF PWR PIPE CRACK STUDY GROUP MEETING ON DECEMBER 12, 1979 The initial meeting of the PWR Pipe Crack Study Group (PCSG) was held on December 12, 1979. Specific items covered during the meeting are listed on the Agenda, included as Enclosure 2.
The major actions from this meeting are sumarized below.
The PWR PCSG Charter was divided into six (6) subtasks and personel assignment to each subtask were made. Subtask group leaders were also assigned to coordinate each groups efforts. The subtasks and group leaders are listed below.
1.
Defining the cracking mechanism Group Leader - W. Hazelton 2.
Significance of Cracking Group Leader - V. Panciera 3.
Determining Causes of Cracking Group Leader - R. Gamble 4.
ISI and Leak Detection Group Leader - C. Cheng 5.
Review of Ongoing Programs and Recommended New Programs Group Leader - J. Muscara 6.
Report Organization Group Leader - S. Bush A schedule of future meetings of the PCSG was developed to be consistant with the Target Completion Date of June 15, 1980. The subtask groups will meet on a as necessary basis. The PCSG meeting schedule and targe.t dates are provided below.
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D. G. Eisenhut JANUARY 8 080 Study Group Meeting January 11, 1980 February 6, 1980 March 5,1980 April 9 & 10,1980 Target Dates Final Draft May 15, 1980 Report Complete June 15, 1980 W
m L. C. Shao, Acting Assistant Director for Engineering Programs Division of Operating Reactors
Enclosures:
1.
List of Attendees 2.
Agenda 3.
PWR Pipe Crack Study Group Charter cc w/ encl:
See next page 1816 081
Meeting Sunmary JMUARY 8 1980 cc:
H. R. Denton R. Minogue S. Levine V. Stello E. G. Case G. Arlotto F. Schroeder
- 1. Murley N. Moseley L. Shao S. Bush W. Hazelton A. Taboada J. Muscara C. Cheng R. Gamble R. Woodruff V. Noonan R. Bosnak J. Burns T. Marsh V. Panciera NRC Participants J. R. Buchanan TERA OI&E(3)
R. Fraley, ACRS (16)
NRC PDR S. Hanauer I'
1816 082 LIST OF ATTENDEES PIPE CRACK STUDY GROUP MEETING DECEMBER 12, 1979 NRC S. Hos ford A. Igne J. Richardson J. Burns R. W. Klecker R. Bosnak C. Y. Cheng R. A. Herman R. Gamble R. Woodruff J. Muscara D. E. Bessetta W. S. Hazelton L. Frank E. G. Adensam V. W. Panciera C. W. Burger V. S. Noonan L. C. Shao BNW-PNL F. L. Becker S. H. Bush 1816 083 UMUARY 3 389
PWR - PIPE CRACK STUDY GROUP MEETING AGENDA I.
Presentation of PWR-PCSG Charter II.
Summary of PWR Pipe Crack Experience and Categorization of Known Problems III.
Technical Discussion IV. Organization of Sub-Task Groeps V.
Schedule for Task Completion VI.
PCSG Progress and Planning Meeting Schedule VII.
Sub-Task Assignments VIII. Conclusion 1816 084 JANUARY t%D
ENCLOSURE PWR PIPE CRACK STUDY GROUP CHARTER PURPOSE The purpose of the PWR Pipe Crack Study Group is to perform a short term investigation into the nature, causes and safety significance of cracking in PWR safety related piping systems and development of a short term and long term course of action.
OBJECTIVE The objectives of this investigation for PWRs are to:
(1) review safety significance of these cracks; (2) recommend a staff position to provide immediate assurances of the safety of operating plants and near term licensing criteria for plants in the CP and OL stages; (3) recommend a plan to resolve the pipe crack problems, and (4) document the results of 1, 2 and 3 above in a pipe crack study group report.
SCOPE In order to achieve these objectives, the following tasks should be undertaken:
1.
Review operating experience 2.
Evaluate the significance of cracking with respect to safety 3.
Examine the causes/ mechanisms of cracking 4.
Review ISI and Leak Detection requirements for PWR 5.
Review ongoir.g Pipe Crack Programs 6.
Develop recommendations a.
Interim positions for operating plants and near term cps and OLs b.
Long term plan for resolving pipe crack problems.
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SCHEDULE The study will be summarized and recommendations made in a final report to be issued by June 15, 1980.
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