ML18003B117
| ML18003B117 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 04/22/1985 |
| From: | Zimmerman S CAROLINA POWER & LIGHT CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NLS-85-101, NUDOCS 8504300397 | |
| Download: ML18003B117 (6) | |
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REGULA Y INFORMATION DISTRIBUTIO YSTEM (RIDS)
ACCESSION NBR:8504300397 DOC ~ DATE: 85/04/22 NOTARIZED; NO FACIL:50 400 Shear on Harris Nuclear Power Planti Unit ii Carolina AUTH BYNAME AUTHOR AFF ILIATION ZIMMERMANiS~ R ~
Cal ol ina Power L Light Co ~
RECIP ~ NAME RECIPIENT AFFILIATION DENTONiH,RE Office of Nuclear Reactor Regulationi Director DOCKET 05000400
SUBJECT:
Forwards revised
-Page 21 to 840906 functional capability rept re functional capability of Class 1 pipingiper request.
Thick pipe in auxiliary piping -sys within acceptable. limits, SER Open Item 3 can be closed, D ISTRIBUTION CODE:
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TITLE; Licensing Submittal:
PSAR/FSAR Amdts L Related Correspondence NOTES:
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L SÃQE Carolina Power 8 Light Company APR-.2 3 1S85 SERIAL: NLS-85-101 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.
1 - DOCKET NO.50-000 FUNCTIONALCAPABILITYOF CLASS 1 PIPING
Dear Mr. Denton:
Carolina Power 2 Light Company (CPRL) hereby submits additional information concerning the Functional Capability of Class 1 Piping at the Shearon Harris Nuclear Power Plant.
As discussed in a telephone conversation with the NRC Mechanical Engineering Branch reviewer, enclosed is a revised page 21 to the SHNPP Functional Capability Report previously submitted by letter dated September 6, 1980.
This revised page indicates that for the specific case of relatively thick piping found in the Class 1
Auxiliary Piping System at SHNPP that the ASME Section III, 1977 Edition with Addenda up to and including Summer 1979, Level D limits do, in fact, represent acceptable functional capability limits.
It is our understanding that with the submittal of the above clarification that the Safety Evaluation Report (SER) Open Item No. 3 concerning Functional Capability of Class 1
piping can now be closed in a future SER Supplement.
If you have any questions concerning this submittal, please contact me.
Yours very truly, 1
JHE/crs (1320GAS)
Enclosure S. R.
im rman ager Nuclear Licensing Section Mr. Wells Eddleman Mr. John D. Runkle Dr. Richard D. Wilson Mr. G. O. Bright (ASLB)
Dr. J. H. Carpenter (ASLB)
Mr. J. L. Kelley (ASLB) cc:
Mr. B. C. Buckley (NRC)
Mr. G. F. Maxwell (NRC-SHNPP)
Dr. J. Nelson Grace (NRC-RII)
Mr. David Terao (NRC-MEB)
Mr. Travis Payne (KUDZU)
Mr. Daniel F. Read (CHANGE/ELP)
Wake County Public Library E
411 Fayetteville Street o P. O. Box 1551 o Raleigh, N. C. 27602
f I lt
,C
'1 Jl CAROLINA POWER AND LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT FUNCTIONAL CAPABILITY OF ASME CLASS 1
AUXILIARYPIPING SYSTEMS
9.0 CONCLUSION
S It has been demonstrated by finite element elastic-plastic analysis on elbows that meaningful functional capability limits can be derived based on the ultimate moments as defined by Gerber modified by the B2 stress index for the piping component Small deformations are assured if stresses less than 70K of the modified limit are maintained in the piping system.
This criterion should be valid for any pipe size.
For the specific cases of relatively thick piping found in the Class 1
portions of pressurized water reactors and for Shearon Harris Nuclear Power Plant in particular, it is demonstrated that the small deformation limit defined above is bounded by a stress of 3.0S calculated by an elastic analysis.
Therefore, for these specific
- cases, the ASME III, 1977 Edition with Addenda up to and including Summer 1979, Level D limits do in fact represent acceptable functional capability limits.
Revised April, 1985 (1320GAS/crs)
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