ML16341A493
| ML16341A493 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/25/1985 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | Shiffer J PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8503150533 | |
| Download: ML16341A493 (10) | |
Text
Docket No.:
50-323 FEB 2s ]9IIs Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas Il Electric Company 77 Beale Street, Room 1451 San Francisco, California 94106
Dear Mr. Shiffer:
DIS~ BUTION 0Doc~:Fi.l'e~50-323 NRC PDR LPDR PRC System LBP3 Reading JLee HSchierling RBosnak MHartman BGrimes EJordan JPartlow LChandler ACRS (16)
Subject:
Piping Branch Connections - Request for Additional Information As a result of the staff audit during the week of January 14, 1985 on the subject of piping systems and pipe supports we identified to you a number of requests for information, first at the conclusion of the audit and subsequently in a letter of January 31,.1985.
One of the items relates to the design of piping branch connections to which you responded in your letter of January 25, 1985.
The staff and its consultants have reviewed your response and determined that further information as identified in the enclosure is required to complete our review.
We request that you provide the information no later than March 4, 1985.
Sincerely, 0RIGI~N slQNEp Qlf
Enclosure:
As stated George W. Knighton, Chief Licensing Branch No.
3 Division of Licensing cc:
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Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, Ca 1 iforni a 94106 Philip A. Crane, Jr.,
Esq.
Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Mr. Malcolm H. Furbush Vice President - General Counsel Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Janice E. Kerr, Esq.
California Public Utilities Commission 350 McAllister Street San.Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa Barbara, California 93105 Ms. Elizabeth Apfelherg 1415 Cozadero San Luis Obispo, California 93401 Mr. Gordon A. Silver Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Harry M. Willis, Esq.
Seymour 5 Willis 601 California Street, Suite 2100 San Francisco, California 94108 Mr. Richard Hubbard MHB Technical Associates Suite K
1725 Hamilton Avenue San Jose, California 95125 Mr. John Marrs, Managing Editor San Luis Obis o Count Tele ram Tribune 3
1.o nson venue P. 0.
Box 112 San Luis Obispo, California 93406 Diablo Canyon Resident Inspector/Diablo Canyon NPS c/o US Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Ms.
Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Joel
- Reynolds, Esq.
John R. Phillips, Esq.
Center for Law in the Public Interest 10951 West Pico Boulevard Third Floor Los Angeles, California 90064 Mr. Dick Blankenburg Editor 5 Co-Publisher South County Publishing Company P. 0.
Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.
Norton, Burke, Berry 5 French, P.C.
202 E. Osborn Road P. 0.
Box 10569 Phoenix, Arizona 85064 Mr. W. C. Gangloff Westinghouse Electric Corporation P. 0.
Box 355 Pittsburgh, Pennsylvania 15230 David F. Fleischaker, Esq.
P. 0.
Box 1178 Oklahoma City, Oklahoma 73101
1
Arthur C. Gehr, Esq.
Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr. Lee M. Gustafson, Director Federal Agency Relations Pacific Gas 8 Electric Company 1050 17th Street, N.W.
Suite 1180 Washington, DC 20036 Regional Administrator - Region V
US Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mr. Thomas Devine Government Accountability Proiect Institute for Policy Studies 1901 Que Street, NW Washington, DC 20009 Michael J. Strumwasser, Esq.
Special Counsel to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles, 'California 90010 Mr. Tom Harris Sacremanto Bee 21st and 0 Streets Sacramento, California 95814 Mr. H. Daniel Nix California Energy Commission 1516 9th Street, MS 18 Sacramento, California 95814 Lewis Shollenberger, Esq.
US Nuclear Regulatory Commission Region V
1450 Maria Lane Suite 210 Walnut Creek, California 94596
Enclosure Diablo Canyon Unit 1 Request for Additional Information 1.
Regarding "Verification 2" in your submittal of January 25, 1985 you should verify the dimensions used for the "Weldolet" weld and provide a scale drawing.
You also should provide a verification for the area replacement in accordance with NC-3640 or paragraph 104.3 of ANSI B 31.1, 1973 Edition.
2.
Identify the branch connections in safety related piping with the following combined characteristics:
h mh b.
d/D
>03 c.
connection is not made with an ANSI 816.9 tee where:
Th
= specified minimum wall thickness of pipe run t h
= calculated required minimum wall thickness of pipe per ANSI B 31. 1 Equation 3, 1973 Edition d
= outside diameter of branch pipe 0
D
= outside diameter of pipe run 0
If there are no such branch connections you should so indicate.
For each branch connection with the above combined characteristic provide the necessary area replacement verification in accordance with paragraph 104.3 of ANSI B 31. 1, 1973 Edition.
10 430. 104 In 'the turbine generator section discuss the extraction valve closure (10.2) times and extraction steam valve arrangements in relation to stable turbine operation after a turbine generator system trip.
(SRP 10.2, Parts II 8 III) 430. 105 In section 10.4.4.4 you have discussed tests and initial field (10.4.4) inspection and inservice testing and inspection, but not the frequency of inservice testing and inspection of the turbine bypass system.
Provide this information in the FSAR.
(SRP 10.4.4, Part I)
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