ML20076H077

Forwards Revised Pages to Plant Unique Analysis Rept Re Resolution of torus-attached Piping Pump & Valve Evaluation. Pages Reflect Satisfactory Results of Evaluation of 14 Valves & Two Pumps

ML20076H077
Person / Time
Site:	Hatch
Issue date:	06/02/1983
From:	Gucwa L GEORGIA POWER CO.
To:	Stolz J Office of Nuclear Reactor Regulation
References
NED-83-331, TAC-07939, TAC-07940, TAC-7939, TAC-7940, NUDOCS 8306160397
Download: ML20076H077 (6)

Text

Georgia Power Company 333 Piedmont Avenue Atlanta. Georgia 30308 Telaphone 404 526 6526 Ma; ling Address:

Post Office Box 4545 Atlanta. Georgia 30302 Georgia Power L. T. Gucwa t%+ southem e'ectnc system Chief Nuclear Engineer Power Generation Department ED-83-331 June 2, 1983 Director of NJclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.

20555 m C DOCKET 50-366 OPERATING LICENSE NPF-5 EDWIN I. HATCH NUCLEAR PLANT UNIT 2 MODIFICATION OF SUPPLEMENT TO UNIT 2 PLANT UNIQUE ANALYSIS REPORT Gentlemen:

Our letter dated February 28, 1983, transmitted the " Supplement to the Edwin I.

Hatch Nuclear Plant - Unit 1 and Unit 2 Plant l#11gue Analysis Reports (PUAR)" pursuant to your " Order for Modification and Grant of Extension" dated January 19, 1982.

It was noted in the Unit 2 report that fourteen valves and two pumps were under evaluation at the time of submittal of that supplement.

Those evaluations have been completed, and the attached revised two pages reflect the satisfactory results of that evaluation.

Please insert the attached pages into the February 28, 1983 supplement to the PUAR for lkilt 2.

Yours very truly, 00 L. T. Gucwa WEBAt e

Attachment xc:

J. T. Beckham, Jr.

H. C. Nix, Jr.

J. P. O'Reilly (NRC-Region II)

Senior Resident Inspector

'I Il 8306160397 830602 PDR ADOCK 05000366 P

pm

PLANT UNIQUE ANALYSIS REPORT - RESOLUTION O

0F TORUS-ATTACHED P1 PING PUMP AND VALVE EVALUATION r

FOR E. I. HATCH NUCLEAR PLANT UNIT 2 INSERTION INSTRUCTIONS i

Remove and insert the PUAR pages listed below.

REMOVE INSERT 6.4-15/6.5-1 6.4-15/6.5-1 There are three pages in Appendix C.

Please remove the last page from the book and insert the revised page.

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6.4.4.5 ' Summary of Results

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V' The valves and pumps evaluated in the torus-attached piping analyses are those up to the first rigid anchor or up to the point where the effect of torus motion has been considered insignificant.

The piping systems considered for analyses are listed in Table 2.5.1-1.

o Valves A total of 52 valve assemblies considered in the analyses have been evaluated for operability and functionality.

All valve assemblies

• were found to be acceptable based on criteria cited in subsection 6.4.4.4.

o Pumps A total of eight pump assemblies considered in the analyses have been evaluated for operability and functionality.

All pump assemblies

• were found to be acceptable based on criteria cited in subsection 6.4.4.4.

• A more realistic torus analysis was performed considering " dry" structure techniques for the S/RV load.

The results were used to evaluate 14 valve assemblies and two pump assemblies.

v 6.4-15

6.5 REFERENCES

6-1 G. Everstine, "Ccupled Vibrations of a Structure in a Compressible Fluid."

6-2

" Mark I Containment Program Structural Acceptance Criteria Plant Unique Analysis Application Guide," General Electric Company, Report No. NEDO-24583-1, October 1979.

6-3 F. A. Leckie and R. K. Penny, "(1) A Critical Study of the Solutions for Asymmetric Bending of Spherical Shells, (2) Solutions for the Stresses in Nozzles in Pressure Vessels, (3) Stress Concentration Factors for the Stresses at Nozzle Intersections in Pressure Vessels," Welding Research Council Bulletin No. 90 (September 1963).

6-4 K. R. Wichman, A. G. Hopper, and J. L. Mershon, " Local Stresses in Spherical and Cylindrical Shells due to External Loadings," Welding Research Council Bulletin No. 107 (August 1965, revised March 1979).

6-5

" Standards of the Expansion Joint Manufacturers Association, Inc.,"

lxpansion Joint Manufacturers Association, Inc., Fifth Edition, 1980.

6-6 S. S. Manson, " Thermal Stress and Low Cycle Fatigue," McGraw-Hill, 1966.

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6.5-1 J

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O APPENDIX C (Continued)

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COMPONENT CATEGORY MODIFICATION DESCRIPTION DESIGN DRAWING /AE FABRICATION / ERECTION DRAWING CB&I l

t Torus-Attached Piping 1.

Addition of elbows S-2-22-79/SCS Drawing 25 and Supports Inside to the RHR test the Torus lines i

2.

Modification to return H-25083/Bechtel Drawing 29 line restraints H-25087/Bechtel Drawing 30 H-25119/Bechtel Drawing 31 i

Drawing 32 j

Drawing 33 Drawing 74 i

4 3.

Removal of spare DCR 82-76/Bechtel N/A piping - X227A i

Torus-Attached Piping 1.

Addition of flexible N/A N/A and Supports Outside metal hose to small l

the Torus bore piping, conduit, i

and instrumentation lines l

2.

Addition / modification DCR 82-76/Bechtel N/A l

of piping supports

]

l 3.

Modification of TAP DCR 82-76/Bechtel N/A valve components l

l 4.

Modification of TAP N/A N/A pump components i

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APPENDIX C (Continued)

COMPONENT CATEGORY MODIFICATION DESCRIPTION DESIGN DRAWING /AE FABRICATION / ERECTION DRAWING - CB&I Suppression Fool 1.

Addition of thermo-H-25066 Drawing 23 Temperature wells and half H-25067 Monitoring couplings H-25068 S/RV Logic Change 1.

MSIV isolation N/A N/A level logic change 2.

SRV low-low set N/A N/A logic 9-O O

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