ML20050E266
| ML20050E266 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/05/1982 |
| From: | Parker W DUKE POWER CO. |
| To: | Adensam E, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| CN-1-002, CN-1-2, NUDOCS 8204130171 | |
| Download: ML20050E266 (5) | |
Text
{{#Wiki_filter:, s' DUKE POWER COMPANY Powza Butt.nswo 422 Sourn Cucacu Srazer, CnARIDTTE, N. C. asa4a WI L LI AM O. PA R K E R, J R. v.c, par.' '"' 4dl5,MM 75"'*o * *: ^"'.'4o s 3 7c4 Svtase Paoouction 373 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation RECEIVED m U. S. Nuclear Regulatory Commission ( g jgg 7 Washington, D. C. 20555 --3
- s susmaiis Tec Attention:
Ms. E. G. Adensam, Chief Licensing Branch No. 4 .,,-f I y Re: Catawba Nuclear Station Units 1 and 2 Docket Nos. 50-413 and 50-414 Preservice and Inservice Inspection Program
Dear Mr. Denton:
Please find attached a request for relief from a requirement of the ASME Code for certain Class 2 circumferential butt welds for Catawba's Pr eservice and Inservice Inspection Program. Ver truly yours, s / (0, L<. a-William O. Parker, Jr. RWO/php Attachment cc: Mr. James P. O'Reilly, Regional Administrator l U. S. Nuclear Regulatory Commission, Region II l Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station Mr. Robert Cuild, Esq. l Palmetto Alliance i l l 6' \\ 8204130171 820405 gDRADOCK 05000413 PDR
Serial No. CN-1-002 Page 1 of 2 1 DUKE POWER COMPANY Request for Relief from Inservice Inspection Requirement Station: Catawba Nuclear Station Unit: #1 and #2 Reference Code: ASME Boiler and Pressure Vessel Code Section XI 1974 Edition including Addenda through Summer 1975. I. Component for which exemption is requested: a. Name and Identification Number: Main Steam Piping. First elbow weld off the top of each generator. See Attachment 1 for complete list of assemblies and welds, b. Function: Main Steam Pressure Boundary c. ASME Section III Code Class: Class 2 d. Valve Category: N/A II. Reference code requirement that has been determined to be impractical: Table IWC-2600 Item #C2.1 requires volumetric examination for circumfer-ential butt welds. Table IWC-2520 examination category C-G requires that 50% of the total number of circumferential butt welds at structural discontinuities be examined. Radiography cannot be performed for inservice inspection due to accessibility. III. Basis for requesting relief: a. Material - SA-106C b. Estimate of extent of preservice examination which could be performed - 0%. Original fabrication examination - magnetic particle inspection is c. performed on the outside surface and radiography is performed on the entire weld volume.
Scrial No. CN-1-002 Page 2 of 2 DUKE POWER COMPANY Request for Relief from l Inservice Inspection Requirement i III. Basis for requesting relief (cont'd): d. Measures which would be required to make the welds able to be inspected - the guard pipe which makes the process pipe welds inaccessible would have to be removed. e. Reference drawings - CN-1491-SM002 CN-1491-SH003 CN-1491-SM004 IV. Alternate examination: There are no alternate examinations that can be performed due to the inaccessibility of the welds. V. Implementation schedule: The fabrication radiography records will be used in lieu of the onsite preservice inspection examination. d i , _. - _.. ~
Requsst for Ralief CN-1-002 Attachment #1 The following is a list of circumferential butt welds for which volumetric examination has been determined to be impractical: i Assembly Weld Number Size 1 i A Generator: CT-SM-1A-C 32" Main Steam B Generator: CT-SM-1B-C 32" Main Steam C Generator: CT-SM-1C-C 32" Main Steam D Generator: CT-SM-ID-C 32" Main Steam + a l l l 'l i 4 g i-.. y-u--.7 ,-..-_-------r+ ,.mm__9-.7~v_ -.,, -gagg en,,awy=y.,-pyga.m 9m.y
W V.Q)Yo ~<v'cm.0 ~ '.".* R.'n , ' ' h.. '. *..W~.. ~ ~' Yi. ' ' ', ' ' ' ? $o .,m. s .hr. W,, hMkM/tS u@ 4% /'l'$8 ? h. Q pan /-i.~1Bjs)MSWH-8-18
- ^
1 60 kU.;oen. On c:Nr. us -
- ll bM M-m ~1'" ' a # #
/- h DEPT .x-78 cNko ~ ~ N M, If-N M E- $Nai C hibiUpo N ER'CO . I '. -+ReoRw H Nh"h; M*-*cHYo M 'o-2' 49 arvA\\ I' - " - 7 7 CH.kUC' "- *~ CMAWPsli.1hM4+ C hj'j.6Ca$~st ia 28 78'ono,H 3 t t M J a 24 S Rey,dssy 2a-77 C'an o PG,/ d u ag e.. ,l e 6 IX~/ >= - c.e. . x.c sw.etu a / a '" 22 / 7'
- c7-^".2 i #a v
$6 ,g ~ o !< ' f "*5"I*'*" 5' i Q[, >..Q6 - g ;utV-AsSLf..[. i... -[,, ' d' ' [f-i g,g Q m l%M h .,.... ~ s a N oIT E s. f oR Moat M w.' y cr-et-t.x.susA nu 7 i
- P '
monkuios Uf Toe gr CR'dSK. 4'- O,,' \\ 12,-O 4 ? .' $ts ntT.M@-1 g RESTRAINT'SEE' bil p/ \\15'-4' i .s, 1 k +- 4 - m ET.sr se-n-3-A D.( ~ ' I 4 N I_ < 9 j j l Y ll 4' j. 7 ,'egc y,,i f.h?R'ONbl. 1 ? i N~ f .J " "0RbeiiA?iow. Q%N ~ M i f ,g -- ,s T
- }
p Q je [./-_l X ? g)l i M ._ q \\l. Ved,,. I x_, ,. p.4 [ % =-{r O 6 #y f ,rgig ' h - -081-2 '~j M,. b.b " 0 o 1 h *b \\ Mc' / 2"com 4 I .If e.. c SECTiowEE. o / f' d @ Thi So - ~ hs, yl [- &dd j f"M " - o, X 3 f ( ~y 3. h' 5 n r l f r 4 / W/E ~ I i g a . g.u t sa un 3 3 I,, aA PLu,c, P E P. e . % N.' i l 2,- N ,,,.1_
- n. 2, a i.7os r'
N 7 -14 - (.svA MDLfs*f Ro,e vtAT-) ( q y .g g.. y /" titun C 4dy% g l '= T s'* V_ h [ esia?'ske h " % T. f p^ ~ M " is y 9 4 (A!N 5'TLe,M 'k b 'g' B4 0 ~ . LiNE. 3-J.4-L AST SECTION TO { ~ \\' d A ,h7 s h
- I '%
^ / BE SPLIT & ' TACK ar h($3 ) l6 2SW ' "h ' ' f c%est WE LDED FOR SHIPMENT.- n l i BOSS V n sawt C ( p_e g e, C M.,cci e r, \\ 4 2. SR W E. TO B E pu AHI % "I 13 g S au ARF _ cui B Act P LL4 P E R - .po 0 E gL \\ x s' F R oM E ND. 4444 g s x
- c.T.- Aw -2 3
\\ N, @-[2, { S , (sciAt sr.m.ur. " 04NL AR Sit.E So FROM VERT.) NS ) T ll, N \\u N. ( ' ies.wsto i.ETit P,$ =n y - - - ~ 7" f ck sos:iAIMToo.our.B" 35 @ .?~ 's V ~- ~ \\ fr s 2 i REP.wrtD t.tTTUO 3' - e 8 - ~-A[- b j iTc y wg . M inc w ('grENDSNb 42". sue-Assey. ,-r h o C-D-2 o s y %,c y. g,3 ENDS.To CT-D-l. UNLEss c T-e t-lx-Se_e ~. __t.,'
- ER CT-a-I!
oTHi.RNist HOTED. i Tor oF C RU SH y DET. S - d-2.- A A @ 9' l uAN"., .( ,j roR M oREinfoR e iOH. g_g 1 b tSO O 7(0 Q h '***D-I 't ~ pg '1500 3(ot)W-oeoc5ss. APP. CoOEASME c.re rTT r a.2 NO. REQ'O ' - CtAss_DU K F "P ' 9 LIN E SPEC. R A Of 0GR A PHY (RT) v-SPECJAL MARKING (/ PREHEAT t, CERT. or COM PLi ANCE b M AG. PARTICLE tMT6 V SPECIAL CLEANING 3,V H EAT TR EAT - %+. - MILL TEST REPORTS ka" k.. LfQ. PENETR ANT tPT) PAIN'p M G V CooE ST__7. %e.'lpA3 @ATA REPoeryg, .* '.V f mt M AM (SM M rA...P C. " N8 J S II6 'A CY3 TEM h REF. DRW'G No. CN-14 9 - SM O537 ~ PR..in g PsipMNN'.IPSTE612sT.s.' s,, sf ( h, R cGi:;.TER CT I X ph,wKcT-W-1A SK.NO. OI -. c M-1 A i f: t.. y t a gg x u wx u - - = aaw -. u ,.}}