ML20199F406

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Submits Revised Response to GL 88-01 Re NRC Position on IGSCC in BWR Austentic Stainless Steel Piping
ML20199F406
Person / Time
Site: Pilgrim
Issue date: 01/28/1998
From: Desmond N
BOSTON EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RTR-NUREG-0313, RTR-NUREG-313 GL-88-01, GL-88-1, LTR-2.98.011, NUDOCS 9802040006
Download: ML20199F406 (21)
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sanon um.an Pilgrim Nuclear Power Station Gl.88-01 Rocky Hill Road Plymouth, Massachusetts 02360-5599 Nancy L Desmond Regulatory Relations Group Manager January 28, 1998 BECo Ltr. # 2.98.011 U.S. Nuclear Regulatory Commission  ;

ATTN: Document Control Desk Washington, D.C. 20555-0001 Docket No. 50-293 License No. DPR-35 REVISED RESPONSE TO GENERIC LETTER 88-01:

NRC POSITION ON IGSCC IN BWR AUSTENITIC STAINLESS STEEL PIPING

References:

(1) NUREG-0313, " Technical Report on Material Selection and Processing Guidelines for BWR Coolant Pressure Boundary Piping", Rev. 2, published date January 1988.

(2) Boston Edison Company Letter No. 2.88.119, " Response to Generic Letter 88-01: NRC Position on IGSCC in BWR Austenitic Stainless Steel Piping", dated August 4,1988.

Generic Letter (GL) 88-01 transmitted NRC staff positions relative to intergranular stress corrosion cracking (IGSCC) near weldments in Boiling Water Reactor (BWR) piping. GL88-01 required licensees to assess the staff positions for conformance or propose alternative measures, and supply information relating to piping replacements, inspections, repair, and leakage.

Our assessment and conformance relative to the guidance of NUREG-0313 (Reference 1) and a listing of the IGSCC susceptible welds remaining in Pilgrim Station were provided by attachments A and B to Reference 2, respectively.

Core spray nozzle weld leakage at the Hope Creek Station in September 1997, prompted us to assess past inspections of Pilgrim core spray nozzle weldments. During this assessment, we discovered that six core spray nozzle welds (14-A-1,14-B-1,14-A-3,14-B-3,14-A-10A and 14-B-10A) were classified incorrectly as IGSCC Category "A" welds instead of "D" in our IGSCC inspection program and GL88-01 response (attachment B to Ref. 2). Category D welds require 100% examination over a period of two refueling outages, whereas, Category A welds require 25% inspection over ten years. The records show these six welds did not receive GL88-01 Category D required inspections.

k'.; O U d 2 l 9802040006 9eotaa il,li,dloI L ,ll ll!

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Page 2/2, Boston Edison Company.

'An operability evaluation was performed to determine the impact of not conducting the required Category D inspections within the specified intervals. The evaluation showed no .

operability concem. The basis for the operability is that these welds were inspected several times in the past with no rejectable indications and Pilgrim has implemented leakage monitoring capabilities in response to GL88-01 to detect coolant leakage (Technical Specification 3/4.6.C.) employing the leak before-break criteria.

We have updated our IGSCC inspection program to irsclude correct classification of welds and enclosed our current list of IGSCC-susceptible welds. This list includes changes made in the IGSCC inspection scope due to plant modifications and inspections in accordance with GL88-01. The future inspections of the revised Category D welds will follow the GL88-01 and ASME code in-service inspection program requirements.

If you have any questions regarding the information contained in this letter, please contact Walter Lobo at (508)830-7940.

N. L. Desmond WGU298011

Enclosure:

Pilgrim Nuclear Power Station IGSCC-Susceptible Weld Inspection Schedule in Accordance with Generic letter 88-01 Mr. Alan B. Wang, Project Manager Project Directorate 1-3 Office Of Nuclear Reactor Regulation Mail Stop: OWFN 1482 1 White Flint North 11555 Rockville Pike Rockville, MD 20852 U.S. Nuclear Regulatory Commission Region i 475 Allendale Road King of Prussia, PA 19406 Senior Resident inspector Pilgrim Nuclear Power Station j

l muumi ENCLOSURE TO BECO LETTER NO. 2.98.010 Pilgrim Nuclear Power Station IGSCC-Susceptible Weld Inspection Schedule In Accordance with Generic Letter 88-01

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Pilgrim N;cle:r P wcr Stction IGSCC-S sceptible Weld Ir_spection Sched:le PNPS ISI Gom

IGSCC A CS 14R-A-14 10 IN. PIPE TO VALVE IGSCC A CS 14R-A-15 10lN. ELBOW TO PIPE IGSCC A CS 14R-B-11 10 IN. PIPE TO VALVE IGSCC A CS 14 R-B-12 10IN. FLBOW TO PIPE l

VALVE TO ELBOW 8 IGSCC A CS 14R-B-13 10IN.

CS I4R-B-14 10IN. PIPE TO VALVE IGSCC A IGSCC A CS 14 R-B-15 10IN. ELBOW TO PIPE Page 1 of 18

m es Pilgrim N clecr Power St tion IGSCC-S:sceptible Weld Inspection Sct edde PNPS 153 Gmup .

In Accord =ce With Generic Letter 88-01 .

Configuration RFO6 RFO7 FLAW RFO8 RFO9 RF010 RFO11 RF011 Notes Category System Weld Number Diameter IGSCC A CS 14R-B-21 10 IN. VALVE TO PIPE ,

RECIRC 2R-BP-I A 4 IN. BR CONN TO P!PE IGSCC A IGSCC A RECIRC 2R-BPA-1 4 IN. BR CONN TO PIPE IG RECIRC 2R-ilA-1 22 IN. IIEADER TO BEND IGSCC A IGSCC A RECIRC 2R *lA-2 22 IN. CROSS TO IfEADER IGSCC A RECIRC 2R-ilA-3 22 IN. CROSS TOIfEADER IIEADER TO BEND 9 IGSCC A RECIRC 2R ilA4 22 IN.

RECIRC 2R-IIB-1 22IN. IIEADER TO BEND IGSCC A RECIRC 2R-ilB-2 22 IN. CROSS TO IfEADER IGSCC A IGSCC A RECIRC 2R-ifB-3 22 IN. CROSS TO IIEADER RECIRC 2 R-ilB-4 22IN. IIEADER TO BEND IGSCC A 7- defer 12 IGSCC A RECIRC 2R-NI A-1 28IN. NOZZLE TO SAFE END 7 12 IGSCC A RECIRC 2R-NI A-10 28tN. PIPETO VALVE Page 2 of 18

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Pilgiim NIclear P:w r St: tion IGSCC-S3ceptible Weld Inspection Sched:le PNPS ISI Gmup -

In Accordance With Generic Letter 88-01 -

Configuration RFO6 RF07 FLAW RF08 RFO9 RFO10 RFO11 RF012 Notes Category System Weld Number Diameter RECIRC 2R-Ni A-11 28IN. VALVE TO ELBOW 1GSCC A RECIRC 2R-Ni A-12 28IN. ELBOW TO PfPE IGSCC A 10 IGSCC A RECIRC 2R-NI A-13 ' 28IN. PIPE TO TEE TEE TO PIPE 8 IGSCC A RECIRC 2R-NI A-14 28IN.

RECIRC 2R-N1 A 15 28 IN. PIPE TO CROSS IGSCC A IGSCC A RECIRC 2R-NI A-2 28IN. PIPE TO SAFE END RECIRC 2R NIA 3 28IN. ELBOW TO PIPE IGSCC A IGSCC A REC 1RC 2R-N1 A-4 28IN. P!PE TO PIPE RECIRC 2 R-NI A-5 28IN. PIPE TO ELBOW IGSCC A RECIRC 2R-NI A-6 28IN. ELBOW TO VALVE IGSCC A RECIRC 2R-NI A-7 28IN. VALVE TO ELBOW IGSCC A 4IN. BR CONN TO ELBOW IGSCC A RECIRC 2R-Ni A-7BC-1 1 f

12 RECIRC 2R-NI A-8 28IN. ELBOW TO PtStP IGSCC A l

l P,ge 3 of 18

2 N a+9s .'

Pilgrim Nrclear Power St: tion IGSCC-Susceptible Weld Inspection Sched:le PNPS ISI Gmup ,

Im Accordrce With Generic Letter 88-01 .

Configuration RFO6 RFO7 FLAW RF08 RFO9 RF010 RFO11 RFOI: Notes Category System Weld Number Diameter PCM 7D PIPE 7 12 ,

IGSCC A RECIRC 2R NI A-9 281N.

defer 12 RECIRC 2 R-NIB-10 28 IN. ELBOW TO PUMP IGSCC A defer 12 RECIRC 2R-NIB-ll 28IN. ' PUMP TO PIPE IGSCC A RECIRC 2R-NIB-12 28 fN. PIPE TO VALVE IGSCC A RECIRC 2R-N1B-13 28IN. VALVE TO ELDOW IGSCC A RECIRC 2R-N1B-14 28 IN. ELBOW TO PIPE IGSCC A 10 RECIRC 2R-NIB-15 21 M PIPE TO TEECROSS IGSCC A RECIRC 2R-N1B-2 28IN. SAFE END TO ELBOW IGSCC A RECIRC 2R-NIB-3 28tN. ELBOW TO PIPE IGSCC A PIPE TO TEE 8 IGSCC A RECIRC 2R-NIB-4 28 IN.

l RECIRC 2R-N1B-5 28IN. TEE TO PIPE IGSCC A RECIRC 2R-N1B4 28fN. PIPE TO PIPE IGSCC A RECIRC 2R-N! B-7 28 IN. PIPE TO ELBOW

!GSCC A Page 4 of 18

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  • Pilgrim N clear Pow;r St: tion IGSCC-S:sceptible Weld L:spection Sched:le PNPS ISI Group -

In Accordance With Generic Letter 88-01 .

Configuration . RFO6 RFO7 FLAW RF08 RFO9 RFO10 RF011 RF012 Notes

, Category System We!d Number Diameter l

28IN. ELBOW TO VALVE 7 IGSCC A RECIRC 2 R-N1 B-8 281N- VALVE TO ELBOW 7 IGSCC A RECIRC 2 R-NI B-9 l

deU 12 IGSCC A REC 1RC 2 R-N1 B-9BC-1 4 IN. BR CONN TO ELBOW RECIRC 2R-N2A-2 12IN. PIPE TO SAFE END IGSCC A COMPOUND BEND TO PIPE 9 IGSCC A RECIRC 2R-N2A-3 12IN.

RECIRC 2R-N2D 2 12IN. PIPE TO SAFE END IGSCC A 10 IGSCC A RECIRC 2R-N2B-3 12 IN. ItEADER TO P!PE REC 1RC 2R-N2C-2 12IN. PIPE TO SAFE END IGSCC A CROSS TO PIPE 8 IGSCC A RECIRC 2R-N2C-3 12 IN.

RECIRC 2R-N2D-2 12 IN. PIPE TO SAFE END IGSCC A 10 RECIRC 2 R-N2D-3 12IN. I(EAvER TO PIPE IGSCC A PIPE TO SAFE END 9

IGSCC A RECIRC 2R-N2E-2 12 IN.

RECIRC 2 R-N2E-3 12 IN. COMPOUND BEND TO P!PE IGSCC A Page 5of 18

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N98 -

Pilgrim Ncclear P;wer St-tion IGSCC-Saceptible Weld Inspection Sched le PNPS ISA Group ' .

12 Accordxce With Generic Letter 88-01 .

RFO6 RFO7 FLAW RFO8 RFOS RF010 RF011 RF012 Notes Category System Weld Number Diameter Configuration RECIRC 2R-N2F-2 12 IN. PIPE TO SAFE END IGSCC A RECIRC 2R-N2F-3 12 IN. COMPOUND BEND TO PIPE IGSCC A RECIRC 2R-N2G-2 12 IN. PIPE TO SAFE END IGSCC A REC!RC 2R-N2G-3 12 IN. IfEADER TO PIPE IGSCC A RECIRC 2R-N21f-2 12 IN. PIPE TO SAFE END IGSCC A 8

RECIRC 2R-N211-3 12IN. CROSS TO PIPE IGSCC A RECIRC 2R-N21-2 12 IN. PIPE TO SAFE END IGSCC A RECIRC 2R-N23-3 12 IN. IIEADER TO PIPE IGSCC A RECIRC 2R-N2K-2 12 IN. PIPE TO SAFE END IGSCC A RECIRC 2R-N2K-3 12 IN. COMPOUND DEND TO PfPE IGSCC A 10 RilR 10R-IA-1 18 IN. PIPE TO TEE IGSCC A RllR 10R-IA-10 IS IN. PIPE TO ELBOW IGSCC A RilR 10R-IA-Il 18IN. ELBOW TO PIPE IGSCC A Page 6 of 18

N 98 ~

Pilgrim Noclear Power Stction IGSCC-Susceptibie Weld Inspection Schedule PNPS ISI Grcup

RFO6 RFO7 FLAW RFOS RFO9 RF010 RFOII RF012 Notes Category System Weld Number Diameter Configuration IGSCC A RIIR 10R-IA-I A 18IN. PIPE TO PIPE -

l 10 IGSCC A RilR 10R-IA-2 18IN ELBOW TO PIPE 10 IGSCC A RifR 10R-IA-3 i 181N. PIPE TO ELBOW IGSCC A R11R 10R-IA-4 18IN. ELBOW TO PIPE VALVE TO ELBOW 8 IGSCC A RitR 10R-IA-5 18IN.

10 R.IIR IOR-1A-6 18IN. PIPE TO VALVE IGSCC A 10 RIIR 10R-IA-7 18 IN. VALVE TO PIPE IGSCC A 10 IGSCC A RilR 10R-IA-8 18 IN. PIPETO VALVE IGSCC A RiiR 10R-IA-9 18IN. ELBOW TO PIPE to RIIR 10R-IB-l 18 IN. PIPE TO TEE IGSCC A l RilR 10R-IB-10 18 IN. PffE TO ELBOW lGSCC A RilR 10R-1B-11 18IN. ELBOW TO PIPE IGSCC A l

7 12 RJIR 10R-1B-14 18 IN. PIPETO FLUED IIEAD IGSCC A l

l Page 7 of 18

WM-Pilgrim Nuclear Power Station IGSCC-Snsceptible Weld Inspection Schedule PNPS ISI Gm@ ,

le Accordance With Generic Letter 88-01 .

RFO6 RFO7 FLAW RFOS RF09 RFO19 RF011 RF012 Notes Category System Weld Number Diameter Configuration RilR 10R-IB-15 18 IN. ELBOW TO PIPE

. IGSCC A I

I RiiR 10R-1B-16R I8 IN. VALVE TO ELBOW IGSCC A 10 IGSCC A RJIR 10R-1B-2 18 IN. ELBOW TO PIPE 10 IGSCC A RIIR 10R-IB-3 18 IN. PIPE TO ELBOW RilR 10R-IB-4 I8 IN. ELBOW TO PIPE IGSCC A 7 12 IGSCC A RIIR 3R-IB-5 18 IN. VAIXE TO ELBOW 9

IGSCC A RilR 10R-1B-6 18IN. PIPETO VALVE VALVE TO PIPE 9 IGSCC A RIIR 10R-1B-7 I8 IN.

l

\

PIPE TO VALVE 9 IGSCC A RIIR 10R-1B-8 18 IN.

9 RIIR 10R-1B 9 18 IN. ELBOW TO PIPE IGSCC A 9

RIIR 10R-O-1 20IN. TEETO 45 ELBOW IGSCC A RifR 10R et0 20IN. PIPE TO PIPE IGSCC A RilR IORoll 20 lN. PIPE TO ELBOW IGSCC A Page 8 of 18

2 h 96*

Pilgrim Nrclear Power St; tion IGSCC-Susceptible Weld Inspection Sched;1e PNPS ISI Cm -

In Accordance With Generic Letter 88-01 .

RFO6 RFO7 FLAW RF08 RFO9 RF010 RF011 RF012 Notes Category System Weld Number Diameter Configuration defer 12 R11R 10R ol2 20IN. EGOW TO VALVE IGSCC A 9

RifR 10R ol3 20IN. VALVE TO PIPE IGST A 8

IGSCC A R11R 10R ol4 20lN. PIPETO PIPE R11R. 10Ro2 20IN. 45 ELBOW TO P!PE IGSCC A RIIR 10Ro3 20IN. PIPE TO EBOW IGSCC A RllR 10R44 20 IN. EGOW TO PIPE IGSCC A RIIR 10R O S 20IN. PfPE TO 45 ELBOW IGSCC A defer 12 R11R 10R o 4 20 IN. 45 ELBOW TO PIPE IGSCC A 7 defer 12 RilR 10R o7 20IN. PIPE TO VALVE IGSCC A 7 defer 12 R11R 10R 48 20 lN. VALVE TO EGOW IGSCC A defer 12 R11R 10R &9 20IN, ELBOW TO PfPE IGSCC A 7 8 10.REPL RWCU 12-1-16R 6 IN. REDUCER TO PIPE IGSCC A P!PE TO REDUCER 6 8 10.REFL IGSCC A RWCU 121-17R 4 IN.

Page 9of 18

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h88

  • Pilgrim N clecr Power Station IGSCC-S'sceptible Weld Inspection Sched:le PNPS ISI Gmup .

12 AccordJnce With Generic Letter 88-01 -

Configuration RFO6 RFO7 FLAW RFO8 RF09 RF010 RF011 RFO12 Notes Category System Weld Number Diameter 6 REPL IGSCC A RWCU 12-I-lBR 4 [N. EGOW TO PIPE _

6 8 10,REPL IGSCC A RWCU 12-1-19R 4 IN. PIPE TO EBOW REPL IGSCC A RWCU 12-I-20R 4 IN. ELBOW TO PIPE 6 8 10,REPL RWCU I2-i-21 R 4 IN. PIPE TO ELBOW IGSCC A REPL RWU 12-1-22R 4 IN. ELBOW TO PIPE IGSCC A 6 8 10 REPL IGSCC A RWCU 12-I-23R 4 IN. PIPE TO ELBOW ELDOW TO PIPE t, 8 10.REPL IGSCC A RWCU 12-I-24R 4 IN.

6 3 10,REPL RWCU 12-1-25AR 4 IN. PIPE TO PIPE IGSCC A PIPE TO ELBOW 6 8 10.REPL IGSCC A RWCU 12-I-25R 4 IN.

PIPE TO PIPE IISW IGSCC A RWCU 12-1-27A 4 IN.

ELDOW TO PIPE 6 8 REPL IGSCC A RWCU 12-I-23R 4 IN.

PIPE TO ELBOW 6 8 REPL ,

IGSCC A RWCU 12-I-29R 4 IN. 1 ELBOW TO PIPE 6 7 8 REPL IGSCC A RWCU 12-I-30R 4 IN.

Page 10 of 18

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Pilgrim NCelear Power Stction IGSCC-Susceptible Weld Inspection Schedde PNPS ISI Group -

In Accordance With Generic Letter 88-01 ,

Configuration RFO6 RFO7 FLAW RF08 RFO9 RFO10 RF011 RF012 Notes Category System Weld Number Diameter 6 7 8 REPL IGSCC A RWCU I2-1-31 R 4 IN. PIPE TO ELBOW 6 8 REPL IGSCC A RWCU 12-I-32R 4 IN. ELBOW TO PIPE I

PIPE TO ELBOW 6 8 REPL IGSCC A RWCU 121-33R 4 IN.

6 7 8 REPL IGSCC A RWCU 12-I-34R 4 IN. ELBOW TO PIPE 6 7 8 REPL RWCU 12-1-35R 4 IN. PIPE"IU ELBOW IGSCC A 6 REPL IGSC(

RWCU 12-0-26R 6IN. PIPE TO BENie 6 REPL IGSCC A RWCU 12-0-27R 6IN. BEND TO PIPE 6IN. PIPE TO ELBOW 6 YES R.REPL IGSCC A RWCU 12-O-2SR 6 7 REPL 11 IGSCC A RWCU I2-0-29R 6IN. ELBOW TO P!PE 6 7 REPL 11 RWCU 12-O-30R 6 IN. PIPE TO ELBOW IGSCC A PIPE TO PIPE NEW IGSCC A RWCU 12-0-31 A 6 IN.

6 7 REPL 11 IGSCC A RWCU 12-0-31R 6 IN. ELBOW TO PIPE 6 7 8 REPL IGSCC A RWCU 12 R-I-36R 4IN. VALVE TO PIPE Page 11 of 18

. . _ = __

I m 9s 1 Pilgrim N: clear Power St: tion IGSCC-Susceptible Weld Inspection Sched:le PNPS ISt Group ,

In Accord:nce With Generic Letter 88-01 .

RF06 RFO7 FLAW RFOS RF09 RF010 RF011 RF012 Notes Category System Weld Number Diameter Configuration 12 ,

IGSCC A RWCU 12R ol 6IN. PIPE TO SWEEP-O-LET REPL IG';CC A RWCU 12Rol0R 6 IN. PIPE TO VALVE 9 REPL RWCU 12R olIR 6IN. VALVE TO PIPE IGSCC A IGSCC A RWCU 12R-O-12 6IN. PIPE TO ELBOW RWCU 12 R-O-13 6 IN. ELBOW TO P!PE IGSCC A RWCU 12Ro14 6 IN. PIPE TO 45 ELBOW IGSCC A RWCU 12RO15 6 IN. 45 ELDOW TO PIPE IGSCC A RWCU 12R-O-16 6 IN. PIPE TO ELBOW IGSCCA RWCU 12Ro17 6 fN. ELBOW TO PIPE IGSCC A l

RWCU 12Ro18 6 IN. PIPE TO ELBOW IGSCC A  !

IGSCC A RWCU 12RG19 6IN. ELBOW TO PIF'E RWCU 17Rol9A 6 IN PIPE TO ELBOW IGSCC A 8

RWCU 12R-O-1 A 6 IN. SWEEPOLET TO ELBOW IGSCC A Page 12 of 18

m 9s .

Pilgrim Nuclear Power Stntion ICSCC-S sceptible Weld I;;spection Sched:le PNPS ISI Group

=

Configuration RFO6 RFO7 FLAW RF08 RFO9 RF010 RF011 RFO12 Notes Category . System Weld r,- amber Dismeter IGSCC A RWCU 12R-O-2 6 IN. 45 EGOW TO P:PE IGSCC A RWCU 12R&20 6 IN. ELBOW TO PfPE RWCU 12R421 6 IN. PIPE TO ELBOW IGSCC A IGSCC A RWCU 12Ro22 6 IN. EGOW TO PIPE 9

IGSCC A RWCU 12R-O-22A 6IN. PIPE TO ELBOW RWCU I2R-O-3 6 IN. P!PE TO 45 ELBOW IGSCC A 6 8 REPL IGSCC A RWCU 12R4)-32RI 6 fN. PIPE TO VALVE RWCU 12R-O-4 6 IN. 45 ELBOW TO PfPE IGSCC A RWCU 12R4)-5 6 IN. PIPE TO VALVE IGSCC A RWCU 12R-O-6 6 IN. VALVE TO EGOW IGSCC A RWCU 12R-O-7 6.V ELBOW TO PIPE IGSCC A l I

RWCU 12R-O-8 6 IN. PIPE TO EGOW IGSCC A 1GSCC A RWCU 12R&9 6IN. EGOW TO PIPE Page 13 of 18

N' Pilgrim N clear Power St-tioa IGSCC-Sasceptible Weld Inspection Sched:le PNPS LSI Group ,

la Accord =ce With Generic Letter 88-01 .

RFO6 RFO7. FLAW RF08 RFO9 RF010 RF011 RF012 Notes Category System Weld Number Diameter Configuration 6 8 to RWCU 12-O-24 6 IN. PENETRATION TO PIPE IGSCC C 6 REPL 10 IGSCC C RWCU 12425R 6IN. P!PE TO P!PE 6 7 11 12 CS I4-A-1 12IN. SAFE END TO NOZZLE IGSCC D 6 11 12 CS 14-A-10A 10IN. VALVE TO PIPE IGSCC D 9 11 14-A-17 10fN. PIPE TO PENETRATION ' 6 IGSCC D CS 6 9 11 IGSCC D CS 14-A-18 toIN. PIPE TO PIPE t 8 10 12 CS 14-A-19 10!N. VALVE TO PIPE IGSCC D 6 12 t 14-A-3 10!N. REDUCER TO PIPE IGSCC D 6 8 12 CS 14-B-1 12 IN. SAFE END TO NOZZLE IGSCC D 6 12 CS 14-B-10A 10IN. VALVE 47 PIPE IGSCC D 10IN. PIPE TO PENETRATION 6 7 9 11 )

IGSCC D CS 14-B-17 i

7 9 11 10 IN. ELBOW TO PIPE 6 IGSCC D CS 14-B-18 6 7 9 11 CS 14-B-19 10 IN. PIPE TO ELBOW IGSCC D Page 14 of 18

4 N~

Pilgrim Nrclear P wer St tion IGSCC-Susceptible Weld Inspection Sched:le PNPS ISI Ccw -

In Accordance With Generic Letter 88-01 ,

Notes Category System Weld Number Diameter Configuration RFO6 RF07 FLAW RFO8 RF09 RF010 RF011 RF012 6 7 9 11 CS I4-B-20 10fN. PIPE TO PIPE IGSCC D 6 7 12 CS 14-B-3 10IN. REDtJCER TO PIPE IGSCC D 8 10 12 CS 14R-A-16 10lN. PENETRATION TO ELBOW IGSCC D 8 10 12 CS 14R-B-16 10 IN.' PENETRATION TO ELBOW IGSCC D 8 10 12 IGSCC D CS 14R-B-21 A 10lN. PIPE TO PIPE 8 10 12 CS DB/DC-14-3001 4 10 lN. PIPE TO PIPE IGSCC D 8 10 12 CS DIUDC-14-3002-5 10 IN. ELi1OW TO PIPE IGSCC D 8 10 12 CS DC-14-F1 10IN- PfPE TO VALVE IGSCC D 8 10 12 CS DC-14-F31 10IN. PIPE TO VALVE IGSCC D l 8 10 12 RECIRC 2R-N1 B-1 28 IN. NOZZLE TO SAFE END IGSCC D 7 9 defer 12 RECIRC 2R-N2A-1 12IN. SAFE END TO NOZILE IGSCC D 7 9 defer 12 RECIRC 2R-N28-1 12 IN. SAFE END TO NOZZLE IGSCC L 8 10 12 RECIRC 2R-N2C-1 12 IN. SAFE END TO NOZZ .E IGSCC D Page 15 of 18

2 m es N Pilgrim Nuclear P wer St; tion IGSCC-S sceptible Weld Inspection Schedule PNPS S Group ,

la Accord;rce With Generic Letter 88-01 Configuration RF06 RF07 FLAW RF08 RFO9 RF010 RFOII RFO12 Notes Category System Weld Number Disneter 8 10 12 ,

!GSCC D RECIRC 2R-N2D-1 12IN. SAFE END TO NOZZLE 8 10 12 IGSCC D RECIRC 2R-N2E-l 12 IN. SAFE END TO NO22LE 8 10 12 IGSCC D RECIRC 2R-N2F-1 12 IN. SAFE END TO NOZZLE 9 11 IGSCC D RECIRC 2R-N2G-1 12IN. SAFE END TO NOZZLE 12 IN. SAFE END TO NOZZII 9 11 IGSCC D RECIRC 2R-N211-1 8 10 12 IGSCC D RECIRC 2R-N21-1 12IN. SAFE END TO NOZZLE 12 IN SAFE END TO NOZZLE 9 11 IGSCC D RECIRC 2R-N2K-1 8 10 12 IGSCC D RllR 10-1A-14 18 IN. PIPE TO FLUED !!EAD 8 10 12 IGSCC D RilR 10-IA-15 18 IN. VALVE TO PIPE 8 10 12 l IGSCC D RJIR 10R-IA-12 18IN. PENETRATION TO ELBOW l

7 9 11 IGSCC D RllR 10R-1B-12 18IN. PENETRATION TO ElDOW 8 10 12 IGSCC D allR DII/DC-l?-3001-2 18 IN. ELBOW TO P!PE l I

8 10 12 Rl!R DB/DC-10-3002-3 18 IN. PIPE TO PIPE IGSCC D Page 16 of 18

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Pilgrim N clear Power St: tion IGSCC-Susceptible Weld Inspection Sched:le . PNPS ISI Gmup -

Im Accordance With Generic Letter 88-01 RFO6 RFO7 FLAW RF08 RFO9 RFO10 RF011 RF012 Notes Category System Weld Number. Diameter Configuration 8 10 12 .

RIIR DC-lO ? 10R 18IN. PfPE TO VALVE IGSCC D 8 10 12 RilR DC-10-F9 18IN. PIPE TO VALVE IGSCC D 8 10 12 IGSCC D RPV 3 1 6IN NOZZLE TO CAP 7 9 11 4 IN. NOZZLE TO SAFE END 6 IGSCC D RPV RPV-N9B-1 6 8 10 12 RWCU 12-1-26 4 fN. ELBOW TO PIPE IGSCC D 8 10 12 12-I-27 4IN. PIPE TO ELBOW 6 IGSCC D RWCU 8 to 12 RWC11 12R-O-23 6 IN. ELBOW TO PENETRATION IGSCC D 6 7 YES 8 10 12 RPV RPV-N9A-l 4 IN. NOZZLE TO SAFE END IGSCC E CS 14-A-16A 10!N. PENETRATION TO FLUED IGSCC G flEAD CS I4-B-16A 10 IN. PENETRATlON TO FLUED IGSCC G IIEAD R!!R 10-1A-13A IB IN. PENETRATION TO FLUED IGSCC G ffEAD RilR 10-IB-13A 18 IN. PENETRATION TO FLUED IGSCC G IIEAD Page 17 of 18

m es Pilgrim N clecr P:wer Ststion IGSCC-S sceptible Weld Inspection Sched;1e PNPS ISI Gmup .

In Accordrce With Generic Letter 88-01 ,

RFO6 RFO7 FLAW RF08 RFO9 RF010 RFO11 RF012 Notes System Weld Number Diameter Configuration Category RWCU 12-O 23A 6 IN. PENETRATION TO FLUED 1GSCCG IIEAD i

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