ML19329G318
| ML19329G318 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/07/1980 |
| From: | Hines E DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| EF2-49-339, IEB-80-08, IEB-80-8, NUDOCS 8007140425 | |
| Download: ML19329G318 (9) | |
Text
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..n am i-CjiSOn 1.C::in;';r" July 7, 1980 ~ Mr. James G. Keppler Regional Director U.S. Nuclear Regulatory Cocanission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137
Reference:
Enrico Fermi Power Plant Unit 2 USNRC Licensing Docket: 50-341 USNRC IE Bulletin 80-08 Edison Report No. EF2-49,457
Subject:
Detroit Edison Response to NRC IE Bulletin 80-08
Dear Mr. Keppler:
The enclosed Edison internal report EF2-49,457 is herein transmitted to you in response to IE Bulletin 80-08. Should you require additional information from Edison in this matter, please advise us. Very truly yours, M y EH/JDR/Im Enclosure cc: Director Division of Reactor Construction Inspection Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission ashington, D.C. 20555 Director Division of Operating Reactors s Office of Nuclear Reactor Ragulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Director Division of Reactor Inspection Prograr.s Office of Inspection and Enforcement U.S. Nuclear Regulatory Coc: mission Washington, D.C. 20555 r3 Mr. Bruce Little NRC Resident Inspector Enrico Fermi 2 Site / j ms 90cQ@y@p[c$I 1 8007140435 i Q POOR t
l l 5 Detroit C r'. 1 .....s wa:-- . - ~.......-....- _ ENRICO FERMI NUCLEAR PO'a*ER PLA!U UNIT NO. 2 DOCKET No. 50-341 sum!ARY. REPORT NO. EF2 - 49,457 0F RESPONSE TO IE-BULLETIN NO. 80-08 + June 30, 1980 . n-
O e INTRODUCTION In response to IE-Bulletin No. 80-08, e review was conducted of the design, construction and NDE results of the containment penetration assemblies and their joining welds. Selow are the specific responses to the requested infor=stion. The attached table also identifies the status and scheduled NDE date for those welds not yet examined. Item 1 Our facility contains penetration designs with containment boundary butt-welds between the penetration sleeve and process piping as illustrated in Figure NE 1120-1, Winter 1975 Addendum to the /.SME B & PV Code Section III. Edison has classified these designs as follows: Figure NE 1120-1 Edison Designation (a) Spare (b) Type III (c) Type II (d) None of this type (e)* Type I (f)** Types IV & VIII
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\\ \\ / \\. ~ o e The Type I design incorporates a guard pipe surrounding the process line and an anchored flued head not depicted in Figure NE 1120-1(e). ~ These designs incorporate corner velds at the process line to containment attachment and at the containment sleeve closure which are specified to be examined by liquid penetrant or magnetic particic methods. _m
Item 2 The ASME Code 1971 Edition with addenda through Winter 1972 is applicable. Regulatory Guide 1.19 is not applicable per Enrico Fermi Unit 2 FSAR, Appendix A. Radiographic examination has been or will be performed on the con-tainment boundary butt-welds for the designs listed above. The informaticn required for items 2.c. and 2.d. appears in Tables 1 through 4 The NDE reports and repair procedures will be available for review at the site. Item 3 Volumetric examination of the penetration welds will be performed in accordance with the ASME Code. Schedule dates for radiography for those welds not examined to date appear in Tables 1 through 4 Due to the advanced state of construction and complex penetration geometry, extensive engineering review and evaluation have been performed to develop a Code acceptable examination for the Type I penetration nozzle welds. An outside consultant retained by the Constructor has conducted considerable research and numerous tests (including mock-ups of the configuration) in the course of the examination development program. As a result of this effort, it is the consensus of the Owner, the Site Construction Manager, the ANI's Site Representative, the Constructor and its censultant that the method outlined below constitutes a viabic and complete volume-tric examination. ~ { The Type I penetration welds will be examined by RT and may be supplemented by Ur examination if necessary. Radiography will be performed by placing the film in the annulus between the pene-tration sleeve and guard pipe (refer to Figure 1 attached). The i Ur examination may be used to interpret certain indications from the RT examination. i 4 6 e e94 M m m ~ J ~
TABI.E 1. SPABE PENETRATIONS (FIG. NE 1120-1 (a)] CONTAINPE.NT N0ZZLE TO CAP WELD Nominal Containment Outside Thickness ~ Penetration Notzle Diameter @ Weld NDE No. Material (in.) (in.) Joint Tyne .vechod X-14 SA 516 Cr. 70 20.000 0.349 Butt RT X-36 SA 333 Cr. 6 10.750 0.495 Butt RT X-41 SA 516 Gr. 70 6.625 0.398 Butt RT X-45 SA 516 Gr. 70 34.000 0.250 Butt RT o 1. Welds have not been performed. 2. Backtng bars are permitted. 3. Cap material will be SA 234 Gr. B. = s. a 6 'O eeom, O e P
a - TAtl2 2. TYPE lit PENETRATIONS (tIG.NE1120-1(b)] CONTAINENT NOZ2t1 To lhMISS LINE WELD Numinal NDE Contetaneet Procese Line Outelde Thicknese or Psnetration Nusale (or Cap) Diameter (8 Weld Bac klag lee Sattedule No. E,stson uclJ No, Ma t e r i al M.at e r i al (in.) (in.) .loi n t Type her Me t tend Date Results/pepalte x-15e T4e-2098-0WI SA Sl6 Cr. 70 SA 234 Cr. 8 20.000 0.348 nutt Yes af 7/10/80 NDE not performed. (Cap) X-25 T46-3095-Ma SA 516 Cr. 70 SA 106 Cr. B 24.000 0.375 Bett Yes RT 12/13ss9 rurosity & I/F - Depair by GetnJ. tag 1.D. 3 23 T46-4304-3Wo '4A 516 Cr. 70 SA 106 Cr. s 24.000 0.375 sett Yes RT 4/10/50 Accepted. No sepatre. E-39A Ell-31)y-oVW39A SA 333 Cr. 6 SA 106 Cr. t 12.750 0.844 Butt Yes RT 12/28/18 AcceptcJ - No repaire. X-398 Ell-3164-WWo SA 333 Cr. 6 SA 106 Cr. 3 12.750 0.844 Butt Yee af 1/31/80 L/F, peroatty & tatermittent pene= t rat tom-repair by cueylete cut-out re-welJ open butt. X-44e T48-2098-OWI SA 333 Cr. 4 SA 234 Gr. 3 26.000 0.348 Butt Yes RT 7/11/50 NDE s.ot per formed. (Cep)
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i TablI. 4. TbE I ttsalit AttoNS lFIC. NE ll201 (c) H00lFitD) CONTAINFt.NT Nolith 80 leu 221E Nltril WLlb Muutnal NDE Contalanunt Nosate Outelde Thtckusts or Fenetration Nosale Nipple Dlaneter (a WelJ Sacklog MDE $6heJule No. FJlson W lJ No. Nstettal Matertal (In ) (In.) Jolne Type gir Mr s h..J Dat e Results of NT4/Repalts 1-7A N30-3258-lW 2 SA 516 Cr. 70 SA 516 Cr. 70 42.000 0.549 Butt Yee ET* 7/1/80 NbE act perfors=d. X-75 N30 3255-lW1 SA 516 Cr. 70 SA 516 Cr. 70 42.000 7/1/80 X-7C N30-3258-lW4 SA 586 Gr. 70 SA SI6 Cr. 70 42.000 8/2/80 X-7D N30-3258-lW) SA Sl4 Gr. 70 SA 516 Cr. 70 42.000 8/23/80 E.8 N 30-3526-lW 3 SA 333 Cr. 6 SA 333 Cr. 6 or SA 106 Cr. B 16.000 10/18/80 NDE not performed. E-9A N21-2 3 36-llW2 SA 516 Cr. 70 SA 516 Cr. 70 40.000 8/2/60 Rejected by wtsual of welJ 1.D., burn-through backing bar leunJ. en-tire welJ to be sut out & re-welJsd open 1.utt. E-9a N21-2 H6-lW2 SA 516 Ca. 70 SA.* l6 Cr. 70 40.000 12/I3/80 NDE not performed. X-10 E51-2 892-2WS SA 333 Cr. 6 SA 333 Cr. 6 or SA 106 Cr. B 18.000 12/I3/80 X-Il E41-2297-2W4 SA 516 Cr. 70 SA 333 Cr. 6 or SA 106 Cr. t 28.000 1/87/81 M-12 E ll-2299-4WI SA Sl6 Cr. 70 SA 516 Cr. 70 36.000 10/Is/60 E-134 Ell-2327-lW2 SA Sl6 Cr. 70 SA 516 Gr. 70 34.000 8/23/80 X-13s Ell-2298-lW2 SA 516 Cr. 70 SA 516 Cr. 70 34.000 9/27/80 M-16A L21-3M3-lW2 $A $16 Cr. 70 SA 333 Cr. 6 or SA 106 Cr. B 28.000 2/7/81 I-16e E21-3052-lW2 SA 516 Cr. 70 28.000 rte 2/7/88 NDE not performed. X-17 Ell-3519-2W2 SA 516 Cr. 70 20.000 BT 8/17/78 ut performed by shoot tag through process pipe, guard pipe anJ aleave-mot estepteJ X-43 G33-3096-lW2 SA 586 Cr. 70 SA 333 Cr. 6 rte will be performied by 2/81. or SA 106 Cr. 3 30.000 0.349 Butt Yes RT* 11/22/80 NDE not performed.
- Supplement =J by trr as necessary.
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