TXX-6258, Forwards Wg Council 870211 & 18 Ltrs to Nh Williams Transmitting Info Requested by Cygna

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Forwards Wg Council 870211 & 18 Ltrs to Nh Williams Transmitting Info Requested by Cygna
ML20211M816
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 02/18/1987
From: Counsil W, Keeley G
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20211M821 List:
References
TXX-6258, NUDOCS 8702270367
Download: ML20211M816 (9)
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Text

{{#Wiki_filter:. - _ _ _ _ _ _ - _ _ _ _ _ _ _ _ . _ _ _ _ _ - _ - _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ - _ _ Log # TXX-6258 

                                                                                            """ """:                                                                      File #10068 3

6_ 10010 clo 1UELECTRIC UU'"jiSIa,,, February 18, 1987 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) DOCKET NOS. 50-445 AND 50-446 CPSES DOCUMENTS REQUESTED BY CYGNA Gentlemen: Attached are 15 copies of the letters logged TXX-6259 and TXX-6280 (with enclosures), dated February 11, 1987 and February 18, 1987, respectively, from W. G. Counsil to N. H. Williams transmitting copies of information requested by CYGNA from TV Electric. Advance copies of the documents referenced in the letter logged TXX-6259 have been provided to CYGNA. Very truly yours, M W. G. ounsil By: e G. S. Keeley & /- Manager, Nuclear Lidehsing JDS/mlh Attachments c - Mr. R. D. Martin, Region IV Mr. D. L. Kelley, R.I., Region IV Mr. H. S. Phillips, R.I., Region IV G702270367 870218 l PDR ADOCK 05000445 I A PDR ' if 400 North Olhe Street I..ll. 81 Dallas, lexas 75201

m t ns t ,0 f t ., tier hat,, ID$13,)fb .- 1 originnt isouco liet? 2 MS. dILLI Atts : W el l , they are in some 3 ways associatou witn it or a few are doing 4 something in the procedure perhaps indirectly 5 associated with the CYGNA issue. We may have a 6 question on it and we have four of them we 7 would like to go througn. 8 HR. NACE: I guess -- I don' t went to 9 stifle, Nancy, out is that -- will the answer 10 ts these help close existing open issues? 11 Ms. WILLIAMS: Yes. One of them is local i 12 stresses in piping which was briefly touched on 13 before lunche That's clearly a CYGNA issue. - 14 A second one has to do with seismic 15 

   .                                                                                      non-seismic piping coundaries which came out as t

16 a result of our systems review so it's not 17 technically on the review issues list for pipe  ; 18 stress however, the classifled piping was 19 identifled in the sytems review issue list. l 20 Since it's been addressed on how you're 21 performing stress analysis it seems 22 appropriate to slide that one in here or it 23 waits for a discussion on the systems review 24 issues. . 25 There are two aspects to that' question. d\ Ah CAMPISE REPORTING,Inc. ' 1 conned anons-d me,enen 273 M.ST Mt STREET Computer Aided IranKriptiof' MOORESTOwM N. J. 08057 

                                                                                     ,                                    (609) 234 6646
       . . _ . _ . . _ _ . . . _ _ _ - . _._ _ _ _                _ ~ . _ _ _ . _ _ _ . _ _ _ , _ _ _ . . . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

ev T f2 9, Meehe4 ////f/14 calculatino local streados. __ ., j j We are at a point where we uon' t really . 

                              .,                                                 unuerutand, for exa;pic, now local stress es arv 8

i; comuinca with c.trocaca f ro:: tne piping. For 

                              .                                                 exaiple, if we loon at Taole 4911 as was explainoa yesterday f or loading condition No.                                                                                                    '
4
                              .                                                 2,   the fli::W PIPE output gives a value for
                              , i:                                              minimum normal stress and tnat is based on cead                                                                                                   :
                             ,,                                                 load plus SRS combina tion of earthquake and occasional loads, and that is added to the it          ,

loads wnice come or tne local stresses which 

                           ,.,';                                                woulo come irom dead load, the.SRSS combination
                             , , ,                                              of out and other occasional loaos and pressure.

_  ;,  : low, wnen we look at the metnouclogy in i 

                             ,,                                                 .9ection 4-6A f or assessing the -- or qual it yi . ;

I.,..i. tno ;)ipe witn a weldau attacnr.ent, we f inu that 

                           .. l l i.

tne input to the program PIT.~tUS7, I believo It I-l 

                           ,,                                                   woulu se, that in that input the pressures input g, I                                                  is zero, so our concern is we really don't l

20 understana now all this is being put togetner. 3 We have a loading equation which says 

                         ., .3 pressures in the proolem, we have an inpot taat
                         ., 3 says no        don't -- don't put pressure _into tne 3                                                      local welded attachment program, but it's not
                        .... ,                                                  combined either in ene minimum normal,stresa,                                                                             -

( O' CAMPISE REPORTING.iNc. 

                                      ~

l coma.s shathead nepone t k 2D WEST We STREET Computer Aided Transenption Q NORESTO%4 N J 06C$7 1 N i609i 234 6646 

        -   . . , _ _ -                   . . - . . _ , - - _ - _ . _ - - - - .                - - . . - - . . _ . _ _ _ . - _ . _ - - - - - . - _ _ _ _ - _ _ _ _ _ _ ~ . - _ - - - _ - - - - - , -

              ,'),Mnluas     //OSAl86
     .      I to do it after a break.

h 2 ' MR. SISKIN: Okay. Then Fred Ogden will take the 3 lead in starting the presentation at this. point. l 4 (It was decided that Mr. Evans would 

;         5                             start the presentations.)

6 : MR. EVANS: , Wyn Evans. The first item, Iten A, 7 , Design of Welded / Bolted Connections. The reference , i

S document is GTI Appendix AA, and the Cygna. concern as we 1

9 - understood it was "per Appendix AA of the SWEC GTI, l 10 j Section 3.6 states that 'CPPP-7 will address the design

11 of base plates with both bolts and welds to the building l

12 structure.' However, there is no specific detail given in 33 i' Section 4.0 'of CPPP-7, Revision 2. Please clarify

(.

j { 34 ; whether the entire tension and shear loads on the base l 15 plate will be designed to be taken by the weld pcrtion i i 16 * 

                     *1*"**"

l; , i g7 You want me to show this one (Indicating)? I t j g3 

               ,          MR. SISKIN:      You can show it, but that basically was
  ;      39 .

picked up and revised. ' i  ! l O I MR. EVANS: Yes, revised Cygna question. The , i , concern, I think, recognizes the fact that CPPP-7, { , Attachment 4-2, Section 3.1.3, does cover, explicitly 

       ,            cover, the situation, and the weld will be designed for
       *4 the entire shear load in these situations.         The bolts do nl      l not take any shear load at all.

A S4 , %hna s ' g Ill13)fb ns 1 I* 1 criginnt iccuco lict? 

                                                                                                                                    -{

\  ! l 2 MS. d ILL I AtlS : ' dell, they are in some l 3 1 ways associated witn it or a few are coing } 4

something in the procedure perhaps indirectly 5

associated with the CYGNA issue. We may have a 6 question on it and we have four of them wo 7 would like to go througn. l 8 HR. NACEa I guess -- I don't want to 9 atifle. Nancy, out is that -- will the answer 10 ts these help close existing open issues? 11 i MS. WILLIAMS : Yes. One of them is local 12 stresses in piping which was briefly touched on 13 before lunche That's clearly a CYGNA lasue., . 14 A second one has to do with seismic 15 non-seismic piping coundaries which came out as 16 a resul t of our systems review so it's not 17 technically on the review issues list for pipe 18 stress however, the classified piping was 19 identified in the sytems review issue list. 20 Since it's been addressed on how you're 21 performing stress analysis it seems 22 appropriate to slide that one in here or it 23 waits f or a discussion on the systems review 24 issues. . 25 There are two aspects to that' question. SE REPORTING.mc. catmed sheethend n. conte 2n we.simrt sinEET Computer Aided Transcription MOORESTOwit. rt. J 08057 ) (609) 234 6646

n _A & 9, tsfeelM4 

                                              ////f/f4 Y

ec1culating local otrocasa. __ ., j j We are at a point where we uon't really . 

                .,                 unueratand, for exa.pic, now local stresses are i                      .
                 ,s;;             comuinea with ..t rouaca i ro:: tne pipiny.             Far
                .                 example, if wu loon at Taole 4811 as was
              ,,                  explainoa yesterday f or loading condition No.                       l
               .'                 2,     the flew PIPC output gives a value for
                ,i.               minimum normal stress and enat is based on cead
             ,,                   load plus SRS combination of earthquake and
           ,,,                    occasional loads, and that is added to the
           .i           ,

loads wnica come or tne local stresses which g ., ' ; woulo come from dead load, the.GRSS combination g of out; ano other occasional lomas and pressure. 

           ,,                                     : low, wnen we look at eno metnouclogy in
               .,                 .9ection 4-6A for assessing the -- or qualit yin;
1. ., i .

tno pipe witn a weldou attacre.unt, we finu that

i. ';

tne input to the program PIT 3UST, I believe it g would me, that in that input the pressures input 5 is zero, so our concern is we really don't g 3 

         .                        understana now all this is being put togetner.

3 We havo' a loading equation which says 

             .,                   pressures in the proolem, we have an inpot taat says no, don't -- don't put pressure _into tne
         ,3                       local welded attachment program, but it's nnt                      '
         .... ,                   combined either in ene minimum normal,stresa, OD
                       ~

CAMPISE REPORTING,INc. 

                           ,       certined Shorthand Iteporters kN          2n west w. stecer                Computer Aided Transenphon N         %0GESTOwM N J 06CS7
                             *Q                   te09: 234 6646

f,185'H'f /WIS/dl86 

     .          I to do it after a break.

h 2 : MR. SISKIN: Okay. Then Fred Ogden will take the 3 lead in starting the presentation at this. point. i 4 - (It was decided that Mr. Evans would 5 start the presentations.) 6 ; MR. EVANS: Wyn Evans. The first item, Itan A, 7 , Design of Welded / Bolted Connections. The reference 3 document is GTI Appendix AA, and the Cygna concern as we I i 9 understood it was "per Appendix AA of the SWEC GTI, I t 10  : Section 3.6 states that 'CPPP-7 will address the design 33 of base plates with both bolts and welds to the building 12 structure.' However, there is no specific detail given in i Section 4.0 of CPPP-7, Revision 2. 

                                                 ~

( 33 i' Please clarify , 

  ~

l 34 , whether the entire tension and shear loads on the base 15 

                   !     Pl ate will be designed to be taken by the weld portion 16      '     "1 "**"
   ;                                                                                                                   l
           ,7      ;                      You want as to show this one (Indicating)?                                   '

I 

  ;        33 MR. SISKIN:     You can show it, but that basically was
  ;        39 picked up and revised.                                                                        '
i l g MR. EVANS: Yes, revised-Cygna question. The ,
          ,y I     concern, I think, recognizes the fact that CPPP-7, l                      Attachment 4-2, Section 3.1.3, does cover, explicitly
         ,               cover, the situation, and the weld will be designed for 24 the entire shear load in these situations.                      The bolts do g                                                                                                      /

O l not take any shaar load at all. 25 l

o 

                                                   -                             Log # TXX-6259
                                                   ==                            File # 2260
                                                   -       9                             10068 clo 1UELECTRIC w ww. c. c sa                                                                February 11, 1987 D rauster ine Preudent CYGNA Energy Services Attention: Ms. N. H. Williams, Project Manager Comanche Peak Project 101 California Street, Suite 1000 San Francisco, CA 94111

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) CPSES DOCUMENTS REQUESTED BY CYGNA

Dear Ms. Williams:

Enclosed are copies of certain documents you requested from TU Electric via Mr. Jack Redding. The enclosed documents include: ENCLOSURE A - Page 89 of the November 13/14, 1986 transcript ENCLOSURE B - Page 7 of the December 15/16, 1986 transcript ENCLOSURE C - SWEC Piping and Support System Engineering Walkdown Final Report, CPSES Unit 1, June 4, 1986 ENCLOSURE D - SWEC Comanche Peak Unit 1, Large Bore Field Walkdown Report, October 10, 1985 ENCLOSURE E - SWEC Comanche Peak Unit 1, Small Bore Field Walkdown Report, June 19, 1986 ENCLOSURE F - SWEC Report No. 15454-N(c)-010, Impact of Construction Deviation on Stress Requalification Program, December 15, 1986 Y ENCLOSURE G - TUGC0 Hardware Validation Program, Revision 3, January 7, 1987 j ENCLOSURE H - TUGC0 Hardware Validation Program, Revision 0, October 8, 1986 1 l l l 400 %rth Oine Street I.H Ml 1)allas. leus 75311 r

TXX-6259 February llo 1987 o Page 2 of 2 , 

 #                  Advanced copies of the documents were provided to you during the January 26-27, 1987 meeting with CYGNA at CPSES.

Very truly yours, a . r Wj o. X l(/ [o u n a. / W. G. Counsil By: /\ / G. S. Keeley ' -/ Manager,NuclearLicdnsing > JDS/ef Enclosures I 

                                                                              /

96 9 l ,

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