ML20128C935

Forwards Communications Rept Transmittal 12 Re Util Phase 4 Independent Assessment Program

ML20128C935
Person / Time
Site:	Comanche Peak
Issue date:	11/13/1984
From:	Oldag D CYGNA ENERGY SERVICES
To:	Ellis J Citizens Association for Sound Energy
References
NUDOCS 8505280459
Download: ML20128C935 (21)

Text

- -

6 .

=

seemes 101 Cal.fornia Street Suite 1000 San Francisco, CA 941115894 415/397-5600 November 13, 1984 84056.037 Mrs. Juanita Ellis President, CASE 1426 S. Polk '

Dallas, Texas 75224 P

Subject:

Comunications Report Transmittal #12 Comanche Peak Steam Electric Station <

Independent Assessment Program - Phase 4 Texas Utilities Generating Company '

Job. No. 84056

Dear Mrs. Ellis:

Enclosed please find communications reports associsted with the Phase 4 Independent Assessment Program. ,

If you have any questions or desire to discuss any' of these documents, please do not hesitate to call.

Very truly yours,

/

D. Oldag Administrativ Assistant Attachments '

cc: Mr. D. Wade (TUGCO) w/ attachments Mr.S.Treby(USNRC)w/ attachments Ms.J.VanAmerongen(TUGC0/EBASCO)w/ attachments Mr. D. Pigott (Orrick, Herrington & Sutcliffe) w/o attachments Mr.S.Burwell(USNRC)w/ attachments lgg52gggg[$3999]49 A PDR

s. ,r. .... n . . cs,... n. e,.,. / A.

- - - - u- -

X--_..-.

s*

Communications 4L t i .

Report 111111111111111111111111111tli q N ec n Conference Rem Torae titilities Project - Job No.

84056 Comanche Peak Steam Election Station g, Independent Assessment Program - Phase 4 8-30-84 s w eet ""

Mechanical Systems Review Questions 3:30 Place:

Cvona-SF

Participants:

of D. Wade TUGC0 Cyana N. Williams Required Comments Action By item Dave and I discussed the CCW system thermal barrier question in light of TUGCO's response. I compared Cygna's understanding of the Westinghouse Part 21 with the sequence of events which concerned us with the Comanche Peak design.

Westinghouse is focused on overpressurization of the CCW system caused by the surge tank vent valve closing on a high radiation signal and a concurrent volume increase in CCW water inventory.

The overpressure that is described in their letter to TUGC0 is in both the surge tank and piping downstream of the CCW pumps with the main area of concern being the piping. Westinghouse also assumes that the tank vent discharges to the same receiver as the

' tank relief valve. The stated Westinghouse objective is ". . .

to ensure that the maximum pump discharge pressure does not

+

exceed 110% of design, assuming a water solid surge tank coincident with the maximum anticipated inleakage through a

[

ruptured tube in one of the system heat exchangers." The proposed fix is to remove the vent and relief valves from the surge tank and replace them with vent / overflow pipes. This solution does not address single failure requirements, surge tank rupture, or the vent size and flow capacity effects on the situation. Westinghouse also states thermal barrier leak rate is 260 G.P.M. " cold" rather than what it would be at operating i temperature.

The Cygna concern is focused on a single failure causing a LOCA i outside containment and possible common mode failure of the CCW system. The Cygna scenario is as follows: There is a rupture in I

a reactor coolant thermal barrier. The temperature control valve j

in the CCW system fails to close and reactor coolant at 650*F and l

} )llk lab I 2 N. William, D. Wade, J. Van Amerongen, R. Hess, J.P. Foley, S.Treby, S. Burwell, m oi. J. Ellis, Project File

- ~ _ _.._m Communications 4L i i Repod 111111lll181111111111111111111 ..

Comments AcN y Item 2250 psia flows into the low pressure section of the CCW system at the rate of 275 G.P.M. No other automatic functions exist to isolate this leakage in the high pressure portions of the CCW system. The CCW piping outside containment will be overpressurized by this high flowrate and pressure and the level in the surge tank will begin to rise at the rate of 275 G.P.M.

Since the surge tank is only designed for 10 psig and is only protected by a 1 G.P.M. relief valve and 1 inch vent valve it will quickly become overpressurized and could rupture. If the tank does rupture both safeguards trains of the CCW system would If the be disabled and a LOCA outside containment would result.

CCW piping outside containment failed prior to the surge tank, then both trains of CCW ney not be disabled but a LOCA outside containment would still occur. It should also be noted that even if the tank and piping remain intact, the surge tank vent will allow the leakage to discharge into the room containing the surge tank. This is due to the vent not being piped to the same receiver as the relief valve in accordance with the Westinghouse normal practice.

It is not clear that the Westinghouse Part 21 is directly related to the Cygna question. Westinghouse does not address single failure of the thermal barrier isolation valve or a LOCA outside containment but they do list thermal barrier leakage into the surge tank as typical limiting condition. Westinghouse is only concerned with overpressurization of components on the discharge side of the CCW pump while Cygna is concerned with the surge tank and CCW return piping. Since Cygna does not have a copy of the actual Part 21 filed by Westinghouse, it is not possible to further assess the similarities or differences between it and the Cygna question.

Dave agreed with these two descriptions - and the differences between the two. The purpose of sending the Westinghouse letter was to demonstrate CCW single failure design problems are generic to the industry and not just a design error at Comanche Peak.

TUGC0 does not believe that the two scenarios are completely

' alike and did not intend to imply that. They understand that either adequate protection against the consequences of a single failure must be provided or the surge tank must be redesigned to prevent rupture.

4 Pap of 2 2

• • unications J..*.7 ,;

gd INilNiililllNilllillllillll l Telee n g Conference Repon Tavae titilit i me Project Job No.

Comanche Peak Steam Electric Station o ,,,.

Independent Assessment Program - Phase 4 7/pg/pa Subject Time:

Cable Tray Support Calculations 8 30 Place:

CPRFR Ri t a

Participants:

of

.lanella Rurkaan r,i hhc 1 Hill Rill Hnrttman EFR Required item Comments Action By I requested copies of the Gibbs & Hill calculations used in the design of cable tray supports.

See attached sheet for list of specific calculations.

u / kM /roh 1 1 Distnbution:

N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis.

• "'* S. Burwell.o Project File . __,_ , _ _ _ ,

.: . .._._____..._.-~..,.._....:._..c

. . ..:.m_....... -

~" -- "' ~ -*-* .

CAW ~ g7.{p Qtt)>$ , /.

/

In order to receive a copy of Duplicata File documen'ts, recipient agrees to destroy after using and that no copies shall be made of the document.

Documents requested:

( tv s-\4 W -, .

1. 6c5-iotc. ,q+[ Swr Q \-19,l'4 '50, '37-42 (,0-bi, 7'6 ~19, 2'6, 9 4-9 8,109,107,%

2. Scs toic. b'3 6w: A-s o ia 4 + se pp-Sb D tcH , te-in c. u,- i ? igist 9i i

. 3. SCS-b:C, 5.- 2 w ft 1-70. 32-% 40 its-sE. 90-ga

4. $ c5- 103 C; Sa + 1' & T- l'5-19 ; sk de

5. 6cs-toSc, M 2. es: 32.,53 CMGM/\

f-3iWsw.m M% M24le1 Signature Dept. Date (p . Scs-To4c, w i, *W: l- Z'4 y % - 40 , M -57_

t'

7. 6cs- tosc. , ts r1, s wr ; 2.,5, zs- 29, S z, S s , i n, u v 8' 60 5 - \% C , % + 4 , + H-T : '2 1 ' .

S. 6CS- 1% C,. Sci 9 3 6 WT 2.1-29

!* I

. 4 ,

l ,

' i I

. l

• I l.

1 a - - - M '9 C,  !

j Communications  !

~

~ ' ' '

4L ( i Report i 111111111111111188111111111111  !

Conference Red Texas Utilities 9 Telec n Project: Job No.

84056 Comanche Peak Steam Elect ric Station *'*

Independent Assessnent Program - Phase 4 24 fulv 1984 Subject Time:

Thermo-Iag Coating of Condults 9:10 AM Place:

CPSES

Participants:

of Carv Murka (x461) TIECO lohn Russ CBS Requred item Comments Action By I asked Mr. Murka which cross-section (circular or square) is to be used in fire-coating conduits. Mr. Murka stated that the craft is instructed to install the cross-sections per procedure CP-CIM-10.3.

signed: '

/ceh 1 1 Distnbution:

N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, m o's S. Bu rwe l l , Proj ec t Fi le

i

'. Communications Al t i O'~

Report 1111111111111111111111lll11lll r-Telec n g Conference Repon Texas Utilities Project: Job No.

Comanche Peak Steam Election Station 84056 Independent Assessment Program - Phase 4 7/23/84 Subject Time:

Document Request 11:05 a.m.

Place:

CPSES

Participants:

of Jill Lewis Brown & Root (DCC)

John Russ Cygna Requred item Comments Action By

Reference:

Conference Report dated 7/21/84, " Document Request,"

11:00 a.m., C. Green and J. Russ participating.

Cygna received a copy of DE/CD-S-1000.

of Signed:

f Page DiSt'ibu'*a: N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, im oi. s. nurwesi, rroJect rise

Communications 4L t i <

~

Report 11lll11lll11111111111111111111

• Telec n Texas Utilities g Conferme Report Project - Job No.

84056

' Comanche Peak Steam Election Station Independent Assessment Program - Phase 4 7/23/84

Subject:

Time:

12:45 p.m.

Request for Open NCR's Place:

CPSES

Participants:

. of

- Clara Holiday TUGC0 John Russ Cygna Required item Comments Action By Cygna requested and received the following NCR's:

NCR-M-83-01661 NCR-M-83-01662 NCR-M-84-00182 NCR-M-84-100038 Signed: Page of Distnbution: N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, i .i. a. ouinesi, ri vaeu Fiie

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

Communications Al n i . .'

Report 1111111111111 0 1111 0 111111111 Telec n g Conference Repon Texas Utilities Project:- Job No.

84056

, Comanche Peak Steam Election Station *

Independent Assessment Program - Phase 4 7/23/84

Subject:

Time:

Nonconformance Reports (NCR's) Against Cable Tray 11:00 a.m.

and Conduit Supports CPSES

Participants:

of Charles Osborn TUGC0 John Russ Cyana Required item Comments Action By

Reference:

Telecon dated 7/17/84, "Nonconformance Reports (NCR's) Against Cable Tray and Conduit Supports,"

C. Osborn and J. Russ participating.

Cygna received the listing requested in the referenced telecon.

d Signed:

~

~

Page of Qr II 10t1Y LRA A IJm 1 1 f

ostnbution: N. Williams,~D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, wo oi. 3. tsurwel i , rroJ ect rise

Communications Report 4L t i .. .

111i11111111111111181111111lll Company: Telec n g Conference Repon Texas Utilities Project: Job No.

84056 Comanche Peak Steam Election Station '

Independent Assessment Program - Phase 4 7/23/84 Subject Time:

10:15 a.m.

SDAR Request CPSES Site

Participants:

of Laura Jones TUGC0 John Russ Cygna Required Comments Action By item Cygna requested and received a copy of SDAR-0015.

t v

t Page of Signed. .,f 3 , j) g -

UfQ/ Tilll1111kw /$m 1 1 D"b"* ": N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, ion ois 5. t5urwell, Project File w -m-- m -

t + y A

Communications 4L i i ,

Report 111111111111111111111111111111 00*P'"Y; Telec n Conference Repo'rt Texas Utilities Project Job No.

84056 Comanche Peak Steam Election Station #'

Independent Assessment Program - Phase 4 7fpifg4 Subject - Time:

11:00 a.m.

Junction Box Support Drawings CPSES

Participants:

of Diane Bleeker DCC Craig McClung (x226) Cyana Required Comments Action By item

1. Please supply Cygna with a copy of drawings: PM 7/21/84 2323-S-0910 - Sh. JA-1, Rev. 0 2323-S-0910 - Sh. JA-1, Rev. 1 2323-S-0910 - Sh. JA-1, Rev. 7 i

l h b ,1 b h ~

/jm 1 1 Distnbution: ' N. Wil11ams, D.' Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, l.

mo oi. s. tsurwesi, rroJeCI. Plie

- c Communications 4L t i '.

Report 11111111111111111ll1lll1111111

• ""# " 3 "' "'"** "* P "

Texas Utilities Project Job No.

84056 Comanche Peak Steam Electric Station Independent Assessment Program - Phase 4 7/18/84 Design Input Control 10:00 a.m. est Place:

Participants:

Of S. Bibo CES D. Smedley CES Required item Comments Action By We asked S. Lim to explain the correlation between computer programs (ANSYS and RELAP) in stress calculations AB-1-1, AB- ~

1-2, AB-1-3, & AB-1-4. Steve explained that output from "RELAP" was used as input to "ANSYS" and that output from "ANSYS" was used as input to the referenced calculations.

Steve stated that it would have been better (from a QA standpoint) to make reference to both ANSYS and RELAP in the referenced calculations instead of just ANSYS. The basic question asked of S. Lim was, "Is design input traceable back to the original source?" Steve stated that although it is somewhat confusing, you can get from the calculation back to ANSYS (by reference) and through an examination of the job control language (JCL) on the ANSYS input, you can get from ANSYS back to RELAP.

i r

I I

oisineution:

& & j))) &

/rb 1 1 N. Williams, D. Wade, J. VanAmerongen, D. Smedley, S. Treby, J. Ellis, S.

! mo oi. Burwell, Project File

Communications 4L t i . .

Report 111111lll111lll1lll111111ll1ll elec n g Conference Reprt Texas Utilities Project Job No.

"#"E6 Comanche Peak Steam Election Station g,,,

Independent Assessment Program - Phase 4 7/psfg4 Subject Time:

Document Request 11:00 a.m.

p,,

CPSF9

Participants:

of Tom Keiss TUGC0 John Russ Cynna Required item Comments Action By

Reference:

Telecon dated 7/24/84, " Document Request," T. Keiss and J. Russ.

Cygna received a copy of item 3 listed in referenced telecon.

I i

l l

l I

l l

signe l

' ); /im 1 1 D'**"D"" ";

N. Williams, D. Wade, J. Amerongen, R. Hess, J. Russ, S. Treby, J. Ellis, m oi. S. Burwell, Project File

mmunications 111111111111111111111111111111

• • • Conference Repod Texas Utilities R Telec n

- Project Job No.

84056 Comanche Peak Steam Electric Station

l Independent Assessment Program - Phase 4 10/10/84 Subject Time:

11:00 A.M. j Systems Review Data Place:

SFR0 Participants of Jeanne VanAmerongen TUGC0 R. Hess CES Comments /c y Item

1. Asked Jeanne when we would receive the pipe flow calculation on the vent chillers and the vendor data on the valve motor horsepower ratings that TUGC0 still owed Cygna.

2. TUGC0 still has not gotten the horsepower rating letter from the vendor. They will forward it as soon as possible.

9

3. The design verification of the calculation should be complete today. She told J. Irons of Gibbs & Hill to Federal Express it directly to Cygna.

})I gs laJb 1 1 D*b"" " N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Foley, P. Rainey, T. Martin, mo oi. s. Ireoy, v. t.iiis, d. nurwe s i, Project ri se

. . Communications alt i Report 11111111lll1111111111111111111 compeny: a conference Report Texas Utilities 9( T*iecon i

Project: Job No.

84056 Comanche Peak Steam Electric Station D*ta:

' Independent Assessment Program - Phase 4 10/30/84 Subject Time:

AWS Calculational Approach 1:30 Place:

" Punching Shear" J. Finneran TUGC0 J. Minichiello CYGNA Required Comments Action By item Cygna has reviewed TUGCO's calculations for MS-1-002-005-S72R -

(done in response to the 10/4/84 telecon between Cygna and TUGCO). Cygna hts found the calculations correct. Cygna requested TUGC0 to provide 4ct5nentation showing the AWS calculation is an appro; mate .nethod for evaluating this type of local stress.

i 2M[_ams,Aha h /f [h /rr 1 D. Wade, J. inAmerongen,' J. Minichiello, S. Treby, J. Ellis, S.

1 D'$taout$n: N. Will I im,. ourwe s i, rroaect r i se

^

Communications Mi

?

.- ~, '

ry <

! , e Report

~

1811111llll1818141111111111111 elec n g Conference Repo'rt Teras Utilities Project Job No.

R8 "

Comanche Peak Steam Electric Station g,,,

Independent Assessment Program - Phase 4 7fufg4

Subject:

Time:

Cable Tray Supports 9:00 AM Place:

rP9F9 tito

Participants:

of Tom Keiss TtlGC0 Bill Horstman CYGNA Required Comments Action By item I had found an apparent descrepancy in design documentation for cable tray hanger #3026. I asked Tom to clarify the problem.

Gibbs & Hill Drawing 2323-El-0713-01-S indicates that cable tray hanger #3026 shall be of type SP-4 (omit brace). However, site support drawing FSE-00159 Sht 3026 shows that the brace is present. Tom said that the Gibbs & Hill drawing is correct, and drafting made an error in preparing the support drawing. Field inspection indicates that the brace is not present. Tom said it was Gibbs & Hill New York's responsibility to justify the use of this hanger without a brace, so the site group has no calculations.

of Signed: V/) jg

• Page Vl .. J A L l Al M Iceh 1 1 Distribution:

N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis. S.

• ** Burwell, Project File

= . - --

~

Communications 4L t i Report b 111111111111111111111111111111 o '*= a 9 ca"'"*"c' "*o

Texas utilities Project: Job No.

84056

. Comanche Peak Steam Election Station Independent Assessment Program - Phase 4 7/27/84

Subject:

Time:

9:00 AM CVC Request CPSES h

Participants:

of Mike Strance Brown & Root John Russ CES Required item Comments Action By Cygna requested CVC's for the following CMC's and DCA's. All CVC's except for CMC 11045 were received.

DCA 20506 DCA 20466 DCA 20331 CMC 11060 CMC 11058 CMC 11045 N

Jh] /ceh 1 1 D'" b" ": N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, soso oi. 5. Burwell, Project File

Communications

,; ~1 - -

4( , , Report 111111111:111111111:11llllll11 g Teiec n conferme Report Texas Utilities Project: Job No.

84056 Comanche Peak Steam Electric Station Independent Assessment Program - Phase 4 10/3/84

Subject:

Time:

Mechanical Review 8:45 a.m.

Place:

SF

Participants:

of J. VanAmerongen EBASCO L. J. Weingart CES Required Comments Action By item Dave Wade had previously told Bob Hess that class 5 piping was defined in the FSAR. I could not find this in the sections available in the Cygna office. Therefore, I requested that Jean check into the CPSES FSAR to determine which section describes class 5 piping.

Jean called back and informed me that the information is on page 3.2-10. She told me that she would send a copy out in the overnight package today.

l l

)l[ g /rf 1 1 D''ibu ": N. Williams, D. Wade, J. VanAmerongen, R. Hess, L. Weingart, S. Treby, l

iorooi. d. tills, 5. Burwell, Project File

< -/ >. -

Communications AL t 1 Report sammanna

"*""" Texas Utilities R Telecon Conference Report Project Job No.

84056 Comanche Peak Steam Election Station D*'

Independent Assessment Program - Phase 4 8/14/84 Subject Time:

(1) Fouling Factors for CCW Heat Exchangers Place:

(2) Maximum Flows -through Heat Exchangers

Participants:

of 4

N. Crista 11 Gibbs & Hill Required item Comments Action By 1 I asked Wanda to provide the fouling factors specified to the CCW Heat Exchanger manufacturer.

Response

4 W. Cristali telecopied Struthers-Wells specification sheets showing cleanliness factors of 80 percent. Cygna will convert to fouling factor to determine if TEMA recommendations are met.

2 I asked Wanda to provide manufacturers' flow rates for the following heat exchangers:

RHR Containment Spray Chilled Water (nuclear) Condenser Control Room A/C Chiller Condenser

Response

W. Cristali telecopied manufacturers' data on 8/16/84. Cygna will check G&H flow calculations to be sure manufacturer flow rates are not exceeded.

f}h,j)ffjthy p, -

/ceh 1 1 N. Williams, D. Wade, J.' Van Amerongen, R. Hess, P. Rainey, S. Treby, J. Ellis,

~

Distnbution:

, . . , . a. ourwesi, rruaect rise

!: Communications Report AL ci mamannaan Company Telecon D Conference Report Project: Job No.

84056 Comanche Peak Steam Election Station g,,,

Independent Assessment Program - Phase 4 8/24/84

Subject:

Time:

11:30 Cleanliness / Fouling Factors for p CCW Heat Exchangers sppo Participants of John Irons Gibbs a Hill J. Folev Cyana Required item Comments Action 3y I told John that although we had researched " cleanliness" factors, and thought we understood the relationship of cleanliness factors to fouling factors, we were still not able to make a definite correlation for the CPSES CCW Heat Exchanger because of some apparent discrepancies in the data sheets Gibbs & Hill had sent us.

He explained that the values given in the data sheets were not always easy to interpret because some were " design values" and other are " required values" for certain cases.

He agreed to send other sheets which would clarify which are l

" design values". Using these numbers, we should be able to r resolve this item (i.e., whether fouling fcctors specified by TEMA, or their equivalent, were used in the design of the CCW Heat Exchanger.

l l

l W46Ghie /ceh 1 1 N. Williams, D. Wade, J. Van Amerongen, J. Hess, P. Rainey, T. Martin, S. Treby,

=m J. Ellis, S. Burwell, Project File

~

Communications M i i 1-

, . Report '

llllllllllllllllllllllllllllll I

i

• P'"I Conference Repo'rt Tms Milities g Telee n J

Project: Job No.

84056 )

Comanche Peak Steam Election Station '

Independent Assessment Program - Phase 4 7/24/84 Subject- Time:

Document Request 8:05 a.m.

Place:

CPSES

Participants:

of Tom Keiss TUGC0

-John Russ Cygna Required Comments Action By item Cygna requested copies of the following documents:

1. T.J. Cope Cable Tray Qualification Test Report TUGC0

2. Burndy Husky Cable Tray Qualification Test Report TUGC0

3. Stress Analysis of Thermo-Lag Subliming Compound Coating TUGC0 Report, Rev. 2, Phillip L. Gould, 4/5/82.

f l

l r

\

i 0 f]b)jijyrtA lim 1 1 N. Williams, D. Wade, J. VanAmerongen, R. Hess, J. Russ, S. Treby, J. Ellis, tw o . S. Burwell, Project File

  .                          - ..           . _ . .     . ._ .-.-              -_           _     _ _ _ . .. _ _ _ _ _ _ _ _ _ _ _ - _ _ _ - _ - _}}