ML20077N423
| ML20077N423 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 08/09/1991 |
| From: | Creel G BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEB-89-001, IEB-89-1, NUDOCS 9108140319 | |
| Download: ML20077N423 (6) | |
Text
_ _ _ _ _ _ _ _ _ _ _ _ _
13 ALTIMOltC i
OASAND ELECTRIC CHARLES CENTER e P.O. BOX 1475
- DALTIMORE. MARYLAND 21203-1476 Gt cimot C CattL Vit a Pht s et-t ?
% C6t&#rtil#0, (2cilsec matt August 9,1991 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2: Docket Nos. 50-317 & 50-318 Response to NRC Dulletin 89-01, Supplement 2,
- Failure of Westinghouse Steam Generntor Tube Mechanical Plues" Gentlemen:
As requested in the subject letter, we are providing information in response to NRC Bulletin 89-01, Supplement 2. This r mplement requires that licensees, (a) determine the accuracy of Reference 4 of tbc Supplement (Westinghouse Reports WCAP 12244 and WCAP 12245,
- Steam Generator Tube Plug Integrity Summary Report," May 1991) with respect to mechanical tube plugs supplied by Westinghouse installed in our Steam Generators, and (b) implement an action plan to ensure that these plugs will continue to perform their intended design function. We plan to take the actions described in Attachment (1) which meet the requirements of NRC Dulletin 89-01, Supplement 2.
Per our phone conversation on July 29,1991 with members of your staff, the required submittal date for this bulletin has been extended to August 9, M. This extension was necessary to include revisions to Table 2 of Reference 4 of the Suppkment. The revised pages of Table 2 that refleet corrected information for Calvert Cliffs Units 1 and 2 are included in Attachment 2.
'w - *
.L 63) o
'I I
Dacument Control Desk August 9,1991
' Page 2 Should you have any further questions regardmg this matter, we will be pleased to discuss them with you.
Very truly your5,
(
x*
v DTATE OF MARYLAND TO WIT t COUNTY OF CALVERT I hereby certify that on the day of Ot49usf
,199 /, before ine, the subscriber, a Notary Public of the State of h1aryland in and for Univ G founlu pen.onally appeared George C. Creel, being duly sworn, and states thai he is Vicd President of the llattimore Gas and lilectiic Company, a corporation of the State of h1aryland; that he provides the foregoing response for the purposes therein set forth; that the statements made are true and correct to the best of his knowledge, information, and belief; and that he was authoriecd to provide the response on behalf of said Corporation.
WITNESS my lland and Notarial Scal:
'/[u'/esh t A
o Notary Public hiy Commission thpires:
/M hu k O pate GCC/Diht/djm/ dim Attachments: (l) llesponse to NilC llulletin 89 01, Supplernent 2 Itailure of Westinghouse S cam Generator Tube hicchanical Plugs" (2) llevised Table 2, Westinghouse Alloy 600 hicchanical Plug Information ec:
D. A. Ilrune,lisquire J. II. Silberg, lisquire It. A. Capra, N11C D. G. hicDonald, Jr., NitC T T. htartin, N11C L 11. Nichalson, NilC 11.1. hiclean, Ddit J.11. Walter, PSP
! U A Cl B.11 E l: [1]
ItESPONSE TO NitC llUI.l.1.~llN 89 01, SUPPL.EhlENT 2 i
'I'All UltE Ol' Wl'.ST' *illOUSE STEAh1 GENEl:ATOlt TUltti
- II ANICAl, PI,UGS'
'lhe following informatbn provides our seaponse to NitC itulletin 89 01, Supplement 2. The items are numbered to match the Actions llequested in the Supplement to the llulletin.
1.
We have reviewed the information contained in lieference 4 of NitC llulletin 89 01, Sumlement 2.
We have identified several dischpancies in the infortnation provided in Tare 2 of iteference 4 (Westinghouse lleports WCAP 12244 and WCAP.12245,
- Steam Generator Tube Plug integrity Summary lleport," hiay 1931).
Due to estended outages on Calvert Clif ts Units 1 & 2 during 1989,1990 and IV>l, and a llot leg Tcm,creuse slightly lower than shown in Table 2 of lleference 4, the column entitled
" Year to (cy Plugs' has been updated. Attachment (2) shows the revised copy of Table 2 with the cor rected information.
2.
(a)
For Calvert Cliffs Units 1 and 2, there are currently no plugs installed whose estimated lifetime does not extend to the next refueling outage. We will take temedial action during refueling outhges to repair / replace any Westinghouse hicchanical ' lube Flug manufactured from inconel MX) prior to the crat of its estimated lifetime, in accordance with Attachment 2 (revised Table 2 from lleference 4 of the supplement). Each heat of Inconel ux) tube plugs installed in Calvert Cliffs Steam Generators is being tracked for repair /replacemut.
(b)
The dates in the columns entitled "P.emain El:PD to hilN " have been revised in Attachment (2) to renect cortections noted in &tions itequatej, item 1.
(c)
Plugs fabricated from heat number NX-5222 are installed in Calvert Cliffs Unit i Steam Generators. 'these plugs are scheduled to be repaired / replaced during the 1992 llefueling Outage.
(d)
'the use of Westinghouse mechanical tube plugs fabricated from inconel MXI has been di: continued at Calvert Cliffs.
(c)
If for any ref ueling outage some unforeseen reason causes lialtimore Gas & Electric Company to change its plan to satisfy items 2(a) through 2(d), an alternative plan for ensuring plug integrity, with appiopriate technical justification, will be submitted to the NitC at least 30 days before the end of the refueling outage.
(f)
We have reviewed the various repair / replacement methods available for Al.AllA considerations. We will use robotic manipulators for the repair / replacement of the Steam Generator tube plugs where possible.
1 j
KD1CilMENT (2)
RINISED TAllt.E 2 WESTINGilOUSE A1.1.OY 600 MECllANICAL l'1,UG INI'ORMATION
Wessinghouse Psopretary Class 2 Fhc UT1) AIL WKs Anoy Sc3 undunical Plug Dase novised 07130/58 Table 2-Westinghouse Alloy 600 Mechanscal Plug Irdotruzion TTPD~%e_rna[ ira Ye_a]r toQAi
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[ $5T231I QN D3TA.
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E]tQF1hTIKK!DAYA__'QtOG.DAfA]7i _HeIEFPD_EFPD DATA _ _ ___
Pbgs Fbge T.G P m cus f4ew Weif($caling Pbg ' IJui M
Std Msg h
Plu0 HL Cyde(T)
Cyde (*F)
Factor Sins Iig EFPD Calc.
Medt.
to Ret EFPD Hepair m
h-h-Art 7 to MIN Date Factor Date to nat4 Plugs pair-mer-Typ i s
a et 11 ant Inst of limd S4G or
_ (A)
,__{Q _ _ _ _tres pt-Jn_jngs> g _n_
gr yL_,JCL_ m Ma PRL gog m
s Ct it Ct ggm.
CCA11 05-88 26 S222 12 IL 59EO 548.0 596.0 548.0 3J 37 3/4 41f 8?9 OGrJ0/91 0 70 402_0 427 1992 EX i
CCAt1 & E8 42 5222 11 iL 566 0 5480 59G 0 548.0 3.7 31 W4 4 71 829 OG/30r91 010 402.0 427 1992 EX CCAL1 07-89 1
G323 12 HL 59G O 548 0 596 0 54& O 39 3.9 3/4 471 881 06!30f91 0 70 189.0 632 1993 EX CCALI 09-89 I
6323 12 HL 506 0 54&D 596 0 548 0 33 3.9 3/4 411 881 06c0f91 010 1810 632 1993 EX CGAll 06-90 3
6323 12 iL 596 0 54RO 5960 548.0 39 Ju9 3/4 431 881 OGcorJ1 0.70 1 77.0 704 1993 EX CCAL1 Oti-90 9
6323 11 HL
$960 5480 5%D 548 0 3.9 39 3/4 47i 881 0E00/91 030 177.0 704 1993 a
CCAL1 06-82 11 2387 12 HL 5960 5480 SSGO 548.0 2G7 26 7 3/4 4 71 6057 03/1529 R70 1726 4332 2005 EX CCAL1 06-82 15 2387 11 IIL
$960 548 0 596.0 54& O 267 M7 3/4 471 0057 03/15/89 030 1726 4332 2005 EX CCAL1 11-83 3
1909 11 HL 5%0 548.0 506.0 548 0 261 M7 3/4 471 EOS7 (0/15/89 0.70 1363 4G94 2006 EX CCAL1 11-83 2
1989 12 HL 59G0 54& O 50E0 5480 263 267 3/4 4.71 6057 03/15/89 030 1363 4694 2006 Ex CCAL1 W B5 6
1989 12 HL 596 0 5480 596.0 548.0 26 7 2E7 3/4 4.71 0057 03/15/89 G70 SCO 5077 2006 EX CCAL1 05-85 13 1989 11 HL 596 0 548 0 556 0 54&O 267 2S7 3/4 411 0057 03/W'89 030 S80 50T7 2008 a
CCAL1 6 85 1
2387 12 HL 506.0 543.0 5960 5480 267 267 3/4 411 6057 03/15/89 0.70 900 5077 2008 EX EX CCAL1 07-85 1
2387 11 HL 596.0 548 0 5G6.0 5480 2E7 2E7 3/4 411 6057 03/15/39 0 70 937 5120 2006 CCAL1 07-85 2
2337 12 HL 596 0 548 0 596 0 548.0 261 263 3/4 411 6057 03f15/89 010 937 5t20 2006 EX CCAL1 W 85 42 5222 11 CL 596 0 548 0 596 0 548.0 283 2E3 3/4 411 G401 OG/30t91 0.70 402 5373 2013 EX CCAI 1 05-88 27 5222 12 CL 556.0 548.0 59G O 548 0 2&3 28.3 3/4 4 71 G401 06/30t91 070 402 5399 2013 a
CCAL1 09-89 1
6323 12 CL 59GO 54& O 59G.D 548 0 30 0 30.0 3/4 4 71 6801 06/30/91 030 1830 6612 2016 EX CCALI 07-89 1
6323 12 CL
$960 54&O $3RD 548 0 30 0 30 0 3/4 411 6801 OGOO,91 030 189.0 6612 2016 EX CCAL1 ;W90 9
G323 11 CL 5960 5480 598 0 548.0 30.0 30 0 3/4 411 6801 OGTJ.bst 030 177.0 6G24 2016 EX 3
G323 12 CL 5%C 548 0 59GO 54& O 30 0 330 3/4 4 71 6801 06/30,91 R70 177.0 0624 2016 EX OCAL1 05-82 15 2387 11 CL 596 0 54&O 596 0 5480 206 4 206 4 3/4 4 71 46700 03/15lB9 0.70 1726 45034 2164 EX CCAL1[W90 CCAL1 06-82 11 2387 12 CL 596 0 548 0 506.0 548.0 20E4 20&4 3/4 411 46750 03/15fB9 070 1726 45034 2164 EX 1 CCAL1 11-83 2
1989 12 CL 596 0 548.0 5060 548.0 206 4 POE4 3/4 4 71 4G7 tan 03/ta B9 0 70 1363 4535J7 2105 EX CCALI 11-83 3
1989 11 CL 506_0 548.0 596.0 5480 206.4 206 4 3/4 4 71 4G700 03/f5,29 0.70 13G3 45377 21G5 a
CCAL1 05-85 6 1909 11 CL 59G.0 548 0 596.0 5480 206.4 206 4 3/4 4.71 46700 03/4 79 030 900 457a0 2167
- EX CCAL1 05-85 6 2387 11 CL 59GO 546 0 596.0 54&O 20G4 206.4 3/4 431 467S0 03/15/39 0.70 900 45700 2167 EX l
CCAL1 6 85 7 2387 12 CL 596 0 548 0 596 0 548.0 20G4 20G4 3/4 411 467E4 03/15/39 G70 980 45780 2167 EX CCAL1 07-85 1
2337 11 CL 596.0 548.0 59GO 548 0 20G4 lM6 4 3/4 4.71 467E0 03/15l89 0.70 937 45822 2167 -
EX CCAL1 07-85 l 4, 2357 12 lCL 596.0 54&Dj59G.0 548.0 20&4 j 206.4 3/4 4.71 46760 03/W19, 010 937 45822 2167[-
EX j
3AM-91 Page9cf 70 Tatde 2
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i mey 600 ca-ec ri.o w
P m C==2 l
0.n. n i.ed:einoss1 rise-ETPD_AU WKt Table:*- Westinghouse Alloy soo WIecharsical Plug Irefoemanion 4
" Erit) DATA^ T'~,.
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.Std Plog No.
Plug IL Orde(T)
Cyde(T)
I'ador Side Lig.
EFPU Casc.
Reses.
to feel E771)
Repair semi ne-n.-
A-is
_ _(g_ (A)
(B) to WM Date Fador Date la RAN Plugs pais-
-- T,p.
Ftmt Irnt of Ihat SK3 or
__gg J(
g}ity p,_ _Q __ 1 f __ _R L
.,,,,_ l ed as g,
Aga t yg,Qg Na CL IR. 3 CL_ Jg_
CL_
Pm N
D r
i CCA12 05-87 41 3513 21 IfL 596.0 54& O 596.0 548.0 2.9 2.9 3r4 4.71 648 03(15M9 0.70 SS30 35
<1M 41 EX CCAl2 05-87 20 3513 22 HL 5960 54E0 59EO 548.0 2.9 2.9 3/4 411 648 03/15M9 0.70 553 0 95
<1M 20 EX j
CCAL2 06-89 12 6323 21 til 596.0 54& O 59EO. 548.0 3.9 3.9 3/4 431 881 OGt30f91 030 35 0 846 1993 LX CCAl2 06-89 10 63Z3 22 iL 59G O 54& O 596 0 548.0 3.9
. :L9 3/4 4Jt 881 06/30/91 0.70
'35 0 846 1993 EX CCAL2 11-82 1
2387 22 HL 596.0 548.0 596.0 5410 33 26J 3/4 411 6057 03(1549 030 1618 4439 2005 EX
{
CCAl2 11-82 1
2387 21 HL 596.0 548.0 596.0 5480 261 2E7 3/4 4 71. 6057 03(1559 G70 1618 4439 2005 EX CCAl2 05-84
'4 1989 21 HL 596.0 548.0 596.0 54& O 26.7 2E7 374 411 6057 G3/ts,39 030 1236 4822 2007 EX CCAL2 05-84 2
1989 22 til 596 0 548.0 596.0 54E0 2R7 26.7 3/4 411 6057 03(tN89 030 1236 4872 2007 EX f
CCAL2 10-85 9
2387 21 IIL 596.0 548.0 596.0 54& O 2G7 26 7 3/4 411 6057 06/3GfM 0 70 1010.0 5047 2010 LX CCAl2 10-C5 4
2387 22 IIL 596.0 548.0 596,0 5480 26.7 261 3/4 4.71 6057 06/30 91 0.70 1910.0 5047 2010 rX CCAL2 05-87 38 3513 21 CL 59E0 548.0 596.0 548.0 22.1 22.1 3/4 411 5001 03(15MS 0.70 553.0 4448 2 035 EX l
CCAL2 05-87 20 3513 22 CL 596.0 548.0 596.0 548.0 22.1 22.1 3/4 411 5001 03(15M9 0.70 553.0 4448 2005 EX
[
CCAL2 06-89 10 6323 22 CL 596.0 548.0 59E0 548.0 300 30 0 3/4 411 6801 ftG,W1 030 350 6156 2016 EX CCAt2 06-89 12 6323 21 CL 596.0 54& O 596 0 548 0 30.0 30.0 3/4 411 6801 06/30t91 0.M 35.0 fl E 2016 FX i
CCAll 07-89 3
6323 21 CL 596.0 54& O 596.0 548 0 30.0 30.0 3/4 431 6801 06J38W1 OJO 350 64J6 201G EX CCAl2 11-82 1
2387 22 CL 596.0 548 0 596 0 54& O 206.4 206.4 3'4 471 46/90 03/15/89 030 1618 45141 2164 EX CCAl2 11-82 1
2387 21 CL 596.0 54E0 596 0 548 0 206.4 206.4 3(4 431 46760 03/15:119 030 1618 45141 2164 EX CCAl2 05-84 2
1989 22 CL 596.0 548.0 596.0 548 0 206.4 20E4 3(4 431 46790 03(15/89 0.70 1236 45524 2166 EX r
CCA12 05-64 4
1989 21 CL 596.0 548.0 596.0 54& O 206.4 206.4 3/4 4 71 46760 03/15/89 v30 1236 45524 2166 EX CCAl2 10--85 9
2387 21 CL 596 0 548.0 596.0 54& O 20E4 206 4 3/4 411 46760 06/3tW91 030 1010 0 45750 2169 EX f
i CCAl2 10-85 4
2387 22 CL 596.0 548.0 996.0 ;548.0 206.4 206.4 3/4 471 46760 GR/3(V91. 030 1910.0 l 45750 2169 EX I
i L
a b
l l
i I
Table 2.
Page 10 of 70 30.hd-91 r
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