ML19291C015
| ML19291C015 | |
| Person / Time | |
|---|---|
| Issue date: | 11/30/1979 |
| From: | Shao L NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | Marsh L Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-01, REF-GTECI-PI, TASK-A-01, TASK-A-1, TASK-OR NUDOCS 8001030374 | |
| Download: ML19291C015 (1) | |
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\\..% ',5 NOV 3 01979 MEMORANDUM FOR:
L. B. Marsh Reactor Safety Research FROM:
L. C. Shao, Assistant Director for General Reactor Safety Research
SUBJECT:
PIPE CRACK STUDY GROUP ASSISTANT Your participation with the Pipe Crack Study Group will be concerned with system-related problems associated with the vibration and corrosion-assisted fatigue cracking of PWR piping.
Your efforts will be directly concerned with resolving the following questions:
1.
What safety-related PWR piping are subject to vibration and corrosion-assisted fatigue cracking? What is the relative importance of various piping to safety?
2.
What thermal transients in PWR piping will contribute to pipe cracking?
3.
What changes in plant operational moder can be made to reduce the effects of thermal transients on PWR pipe cracking?
4.
What water hammer events may occur in PWR piping that may contribute to pipe cracking?
5.
What additional piping analysis and component inspections can be made to understand the potential of PWR pipe cracking and crack growth?
J
. C. Shao, Assistant nirector for General Reactor Sulaty Research Division of Reactor Safety 1,asearch cc:
D. G. Eisenhut, D0R V. S. Noonan, D0R B. Grimes, D0R P. Check, D0R S. Hanauer, DSS T. E. Murley, RES
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