ML17278A939

Forwards Addl Info Re 10-yr Inservice Insp Program,Per NRC 860610 Request for Addl Info.Status of Relief Requests Re Preservice Insp Requested

ML17278A939
Person / Time
Site:	Columbia
Issue date:	07/22/1986
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Adensam E Office of Nuclear Reactor Regulation
References
GO2-86-679, TAC-57728, NUDOCS 8607280126
Download: ML17278A939 (22)

Text

ACCESSION NBR: FAC IL: 50-397 AUTH.NANE SORENSEN Q.C.RECIP.NANE ADENBAN>E.Q.REQULA ORY INFORNATION DISTR IBUTI'SYBTEN (R IDS)8607280126 DOC.DATE: 86/07/22 NOTARIZED:

NO MPPSB Nuclear Progecti Unit 2i Mashington,.

Public Powe AUTHOR AFFILIATION Mashington Public Power Supply Sgstem RECIPIENT AFFlLIATIGN BMR Prospect Directorate 3 DOCKET I 05000397

SUBJECT:

Forwards addi info re i0-gr inservice insp program>per NRC 860610 request for addi info.Status of relief requests T e preservice insp.also requested.

DISTRIBUTION CODE: A047D COPIES RECEIVED: LTR ENCL SI ZE: TITLE: OR.Submittal:

Inservice Inspection/Testing NOTES: RECIPIENT ID CODE/MANE BMR ADTS BMR PD3 LA BRADFUTE J COPIEB LTTR ENCL i i i 0 RECIPIENT ID CODE/NANE BMR EB BMR PD3 PD Oi COPIES LTTR ENCL i i 5 5 INTERNAL:.ACRS ELD/HDB2 NRR/TANB RQN5 ib iO iO 0 i i i i*DN/LFNB EIB 04 i 0 i EXTERNAL: LPDR NBIC 03 05 i i i NRC PDR 02 TOTAL NUNBER OF COPIEB REQUIRED'TTR'8 ENCL 25

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Reference:

NUCLEAR PLANT NO.2 INSERVICE INSPECTIONS AND INSERVICE TESTING PROGRAMS AND RESPONSE TO REQUEST FOR INFORMATION 1)Letter, E.G.Adensam (NRC}to G.C.Sorensen (SS),"WNP-2 Ten Year Internal Inservice Inspection Program Request for Additional Information", dated June 10, 1986 2)Letter, G.C.Sorensen (SS)to E.G.Adensam (NRC),"Inquiry as to Status of Request for Relief for Interim Approval of Revision 3 to WNP-2 Pump and Valve Inservice ilest Program Plan", G02-86-211, dated March 12, 1986 3)Letter G.C.Sorensen (SS)to E.G.Adensam (NRC),"Preservice Inspection Program Plan Inservice Inspection Program Plan Request for Relief", G02-86-179, dated February 27, 1986 As requested by Reference 1}enclosed is additional information on the WNP-2 10-year Inservice Inspection Program.Should you have further questions on the Inservice Inspection or Inservice Testing Program Plan please contact Mr.P.L.Powell;Manager, WNP-2 Licensing.

0 E.G.Adensam Page Two July 22, 1986 INSERVICE INSPECTIONS AND INSERVICE TESTING PROGRAMS AND RESPONSE TO RE(VEST FOR INFORMATION Additionally References 2)and 3)requested action on the staff's part which to date has not been forthcoming.

A review of our records showi we have two outstanding related open items.Reference 2)requested the status of the interim approval'to use.Revision 3 of the WNP-2 Pump and Valve Test Program submitted December 26, 1985.Reference 3}requested NRC's review of Preservice Inspection and Inservice Inspec-tion requests for relief submitted 5/17/85 and 5/29/85 respectively.

Reference 1)does contain questions on the Inservice Inspection Program Request for relief however the Preservice Inspection requests for relief are still open.It is our understanding that this item is re-solved however formal confirmation is still required.A status of these two items is.requested.

Very truly yours, W G.C.Sorensen, Manager Regulatory Programs PLP/bk CC JO Bradfute-NRC JB Martin-NRC RV E Revell-BPA NS Reynolds-BLCP&R NRC Site Inspector t

RESPONSE TO NRC's REQUEST FOR ADDITIONAL INFORMATION FOR WASHINGTON PUBLIC POWER SUPPLY SYSTEM WPPSS NUCLEAR PLANT NO.'2 DOCKET iNUMBER 50-397 guestion: A..In Section 14.0,"Weld and Component Identification Diagrams," of the ISI Program Plan, the Program Plan and Schedule Tables list the following welds as being inspected to Table IWC-2500-1, Examination Category C-F-2, Item C5.51 of the Code with only surface examination being required: WELD NUMBERS, 18RHR(20)A-1 18RHR(20)A-2 18RHR(20)A-3 18RHR(20)A-4 18RHR(20)B-1 18RHR(20)B-2 18RHR(20)B-3 18RHR(20)B-4 To satisfy the inspection requirements of, Item C5.51, these welds require both surface and volumetric examinations..

Clarification of this issue is needed.~Res onse: The Supply System revised the WNP-2'SI Program Plan and has included in it a surface and volumetric examination requirement for each of the above 1 isted wel ds.Attached markups ref 1 ect this change.question: I B.Isometric Drawing No.HPCS-202-4 is missing from the ISI Program Plan.Provide the staff with a copy of this drawing.~Res onse Enclosed is a copy of ISI weld and identification diagram HPCS-202-4, Rev.2.This drawing was being revised and inadvertently omitted.Question: C.In Relief Request ISI-2-001, relief from performing a 100K volumetric examination of 13 Class 1, ASME Section XI, Category B-A, pressure re-taining welds in the reactor pressure vessel was requested on the basis of partial inaccessibility of the welds due to plant design.for the proposed partial volumetric examination of these welds, the Licensee should define the percentage of each weld to be examined.~Res onse: Request for Relief No.ISI-2-001 has been revised and is hereby submitted for your review.It now contains a tabulation of each RPV weld and the percent which is accessible.

~e'T iluestion:

D.Relief Request=ISI-2-002 requests use of a schedule 40 calibration block instead of a Schedule 80 calibration block for inspection of Reactor Recirculation 4-inch decontamination connections (8 welds, Examination

'Category B-J, Item B9.11).The staff requests a copy of the procedure that will be used for calibration of the inspection equipment using the substitute calibration block.Specifically, what adjustments are made for the difference in wall thickness between the Schedule 40 calibration block and the Schedule 80 connections, and how is the Code required examination volume coverage verified?Justify the determination of impracticality for the use of the Schedule 80 calibration block.~Res onse: I The Supply System hereby withdraws Relief Request ISI-2-002.

The examina-tion of these welds will utilize WNP-2 UT calibration standard UT-29.A comparison of this standard to the piping for which it will be used is as follows: Piping Cal.Block RRC(8)-4S UT-29 4" Sch 80 SA-376 Tp 304 4" Sch 80 SA-312 Tp 304 Section XI, Appendix III, III-3411,"Material Specification" requires the calibration blocks be made from material as specified for the piping being joined by the weld.UT-29, although of a different specification, meets this requirement because the physical and chemical properties are identical.

These materials have different specifications because SA-312 allows the pipe to be either seamless or welded, whereas SA-376 allows seamless pipe only.Since the segment of pipe used for the calibration standard does not contain a weld, the materials are identical.

Therefore, relief is not ,required.

In addition, a review of the baseline examination performed with UT-31, which is more sensitive due to the smaller notch size of the Schedule 40 pipe, showed no indications; therefore, there are no indica-tions to compare the inservice examination to.All of the changes addressed in these responses have been incorporated into the WNP-2 ISI Program Plan and will be submitted to the NRC when the plan is formally updated.

Date 04/16/85 Revision 0 Component or System Code Number of Melds Ho.B-A=.+3-I6 RE(VEST FOR RELIEF HO.ISI-2-00]r'*ASME Class 1,Section XI Category B-A pressure retaining welds in reactor pressure vessel.List attached.All of the subject welds were designed and fabricated to ASME Section III Class 1 1968 Edition, Summer 1970 Addenda..The Inservice Inspection is'o be performed to the 1980 Edition Minter 1980 Addenda of ASME Section XI.~Cate or Section XI Requirements Basis for Requesting Relief Section XI requires examination of 100%of the pressure retaining welds in Category B-A be performed completely.

The following'examinations are requireed:

B-A All pressure retaining welds in Reactor vessel.Yolumetric Relief is required from ASME Section XI examination requirements on the basis of partial inaccessibility of the weld due to plant design.The design and access provisions complied with earlier codes which did not require 100K examination.

Per 10CFR50.55a'g}

(4}access is not required to be upgraded to the Inservice Inspection Code.

II P tf g 1 f Date 04/16/85 Revision 0 RE(VEST FOR RELIEF HO.ISI-2-001 Alternative Examinations

~~e The accessible portion of each weld will be examined per Section XI requirements.

Impact on There will be no adverse impact, on plant quality and safety by Plant guality doing only a partial code examination of these welds.and Safety 1.The Class 1 RPY welds have passed radiographic, magnetic particle and ultrasonic examinations in accordance with Section III.2.All of the.identified welds will be subject to a system pressure test in accordance with Section XI Class 1 er-2-requi rements.'.Leak detection systems identify significant leakage in the areas of the subject welds.Appropriate operator action would occur due to leak detection system alarms.4.Other similar welds in the vessel er-same-piping-run will receive full code examinations.

The integrity of the pressure boundary can thus be verified by sampling.er/4-6 RE(}UEST FOR RELIEF NO.ISI-2-001 Date Revision ISO No.Weld Number Descri tion Cate or B-A 5 of Weld Examinable Remarks RP V-101 RPV-101 RPV-101 I RP V-101 AA AB AC BTM HD-SC¹1 WD¹l-¹2 SC CRC WD¹2-¹3 SC CRC WO¹3-¹4 SC CRC WD 53K 52$395 See Note 1 See Note 1 See Note 1 Seven two-foot long stabi'lizer

'lugs obstruct~weld at 45 intervals.

See Note 1'"'PV-101 RPV-101 RPV-101 RPV-102 RPV-102 RPV-102 RPV-102 RPV-102 RPV-102 RPV-102 RPV-102 RPV-102 AE BJ BK DA DB DC OO DE DF DG DR AJ Vessel to flange¹3 SC VRT WD at 50¹3 SC VRT WD at 170 95K 90K 90K BTM HD MRD at 272 67K BTM HD MRD at 332 67ÃBTM HD MRO at 32 67K BTM HD MRD at 92 67K BTM HD MRD at 152 67K BTM HD MRD at 212 67K BOT HO DOL at 270 17$BOT HD DOL at 90=17K BOT HD DOL WD 93K Thermocouples at 135 , 270 and 360 Stabilizer lug at weld AD intersection Stabilizer lug at weld AO intersection Thermocouples at weld AA intersection.

See Note 2 See Note 2 See Note 2 See Note 2 See Note 2 See Note 2 See Note 3 See Note 3 See Note 1 4-7 ll I RE(VEST FOR RELIEF NO.ISI-2-001 Date Revision Cate or B-A Continued Notes: Design of RPV shield wall and external inservice inspection system was completed prior to promulgation of amendments to 10CFR50.55a.

Their design limits access to less than 100K of this weld.2.ss not besn Only 21" starting from the intersection of weld AA and 14" starting from the intersection of weld AJ can e examined due to the vessel k t (A'l e foot'examined on eac weld.3.Only 12" to 23" on each end of the weld, starting from the intersection of weld AJ, can be examined due'o CRD penetrations and housings.1 4-8

WNP-02 IKTERV<L: 01 DRAWING NO~RHR 204 WASHINGTON PUBLIC POWER SUPPLY SYSTEM IS I PROGRAM PLAN AND SCHEDULE'YSTEM OR COMPONENT:

18PHR (20)2 DESCR IPTION: RC IC STf'l-RHR HX-1 A PAGE 001 DATE 04/25/86.:

I DENT~t" 0~RHR 590 RHR-612 RHR"588 l 1l'HR-589 RHR-587 DES CR TP T I ON SPRING SPR!NG PSA-3 S (2)PSA"3 SNUBBER SPRING SECT~XI EXAM~I T EM l'lO N/A N IA N/A N/A'l/A N/A N/A N/A N/A N/A EXAM MTH~N/A N/A N/A N/A N/A CAL~SCHEDULED BLOCK PER~OUTAGE REGS NOTES OT OT OT OT OT S/N T2792/B2347 c'/N 4493 R HR-592 RHR-593 R l'.-R-591 RHR-595 RhR-594 aHR-596 18RHR (20)A-1 STRUT SPR INC PSA-1 SNUBBER STRUT SPR ING l'l/A N/A N/A N/A N/A N/A N/A N/A N/A N/A P.SA-1/2 SNU BBE R N/A N/A N/A N/A N/A N/A N/A N/A OT S/N 2782 OT OT OT OT S/N 3888 OT RHR-984N VALVE TO PIPE C-F-,2 C5~51 C5~51 SUR VOL FB F8 RHR-597 (k)$RHR-597 SPR ING 8 WELDED LUGS STRUT IWF C-C IWF F X C3~40 F-X VT3H SUR VT3H F F

'Jt" P~2 l 4 t g~~, It'"SHINGTON PUBLIC POMLP SUPPLY SYSTr'8 IS I PROGR'i.Phf~'tl ANO,SCf'EDULE SVSTEW OR CO~tPC<l=i!'1

~GESCRif'!;."N.'R~.LP

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=HX-1A.DATE.".4/25/c 4'-."'Ri r'2'"-2 ArS CR:PT TO/g SECT~'I EXON~I 7-"<l-W 0," r"pp HTHi W MO~.CA L~.~.SCH':DUL:.O cf OC4.PERo OUT'Gi R.".C~NOTES 18n~"~, 3"")A 3<t P IPE EL TO P'IP.=C-F-2 C5~51 C5+51 C--2 C5o 51 C5i51 SUR VOL SUR QhL F8 FR i9 Ipr TO;=-E C-F-2 C5~51 C5>>51 SUR VO RHR-586 RHR-584 RHR"583 RHR-582 RHR-975N RHR 949N RHR-950N RHR-951N RHR-953N R HR-955N t>A-i VUBf)R P SA-3 SNUBB ER SPR ING STRUT STRUT ANCHOR BOX BOX BOX PSA-3 SNUPBER BOX N/A tV/A N/A F.-X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A OT OT OT OT OT OT OT OT OT OT OT S/N 9929 S/N 3894 S/N 3879 t~4 l' Mt'P-02 INTERVAL: 01 DRAMING NO~RHR-208)'A'SHIN 6 TON PUBL IC P OMER SUPPLY SYSTEM ISI PROGRAM PLAN AND SCHEOULE SYSTEH OR COHP ONENT'.R FR (20)-2 OES CR IPTION: LOOP R SPLY-RHR HX1R PAGE 001 OATE 04/25/86 IDENT-~NO~OES CR IPTI ON SECT~XI EXAM'TFH VO EXAM", CAL~SCHEOULEO HTH BLOCK PER OUTAGE REQ~NOTES RHR-58C RHR"574 RHR-573 SPRING P SA-3,S tI:UBB ER I PSA-3 SNUBB ER N/A Nl A N/A N/A NID N/A N/A N/A N/A OT OT OT S/N S/N RKR-572 RHR-607 RHR-571 RHR-575 RKR-576 RHR-577 RHR-578 R HR-9 85l".18RHR(20)B-1 SPRING SPRING SPRING.-PSA-3 SNUBBER STRUT SPRING PSA'"3 SNUBBER STRUT N/A N/A t'ai/A N/A N/A N/A N/A N/A t!/A N/A N/A.N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A OT OT OT OT OT OT S/N S/N RHR-6 VAL VE TO PI PE C"F"2 C5~51 C5~51 SUR VOL FB F8 18RHti (2C)0-2 SPR ING IWF F-X VT3H F 16RHR (2C)0-3 PIPE TO EL EL TO PIPE C-F-2 C5~51 C5~51 C-F 2 C5~51 C5~51 SUR.VOL SUR VOL FB F8 MNP-02 INTERVAL: 01 DRAMING NO~RHR-208 MASHINGTON PUBLIC POMER SUPPLY SYSTEh(ISI PROGRAH PLAN AlUD SCHEDULE SYSTEN OR COMPONENT:

RHR (20'DESCRIPTION:

LOOP R SPLY-RHR HXlB PAGE 002 DATE'4/25/86 IDENT~NG~R HR-581 18RHR (20)8-4 RHR-a DESCRIPTION STRUT PIPE TO, TEE SECT~XI fgAN~IMF C" F-2 TTF'H NO F-X C5~51 C5~51 EXA V;HTH~VT3H SUR VOL CALe SCHEDULED PiL()CK PER~OUTAGE REQ~NOTES F8 F8 e RHR-570 RHR-568 RHR-567 RHR-566 RHR-969N RHR-960N R HR-961N RHR-1003N RHR<<938N RHR-930M RHR-939N R HR-957M PSA-3 SNUBBER PSA-3 SNUBB ER SPRING STRUT STRUT ANCHOR PSA-1 SNUBBER PSA"3 SNUBBER STRUT N/A N/A N/A N/A N/A N/A N/A N/A N/A"l/A N/A N/A N/A.N/A h!/A N/A N/A N/A PSA-1 Sf>(2)'/A N/A STRUT N/A N/A PSA-3 SNUBBER N/A N/A PSA-3 SNUBBER N/A hl/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/a OT OT S/N S/N OT OT OT OT S/N OT OT S/N OT S/N OT OT S/9 OT, S/N DT~,

A J lr 0 A TL Ce)C(att CN IPCS-202 2 16 ICtCS (I)-~IQPCS(I)23~I QPCS (u-2(CONT CM NPCS-202-5

'IPCS (I)-~(Of F)Nfl S))'~TJ 16MPCS (I)-36 IQPCS(I)-3S IQPCS(I)-)C

>M.8 6"~IS 4.I IQFCS(l)26 IQPCS(l)-25 IQPCS(I)30~IIPCS 22)PCS 91)N IPCS-915M 16MPCS(I)29 IQPCS(0-28 FA fl 522'.S)R C3 IQPCS(I)33 FL fl 501'I)R 33 I 5 I 220-1 decff 6 CRA(L I SCIIEIRIC IP(5-630.13.19 REV 8 IQPCS(l)32 IQFCS(1)22~EL Ce)Irrcr(l-r~g~)PCS 909M~EL Cee 0'180(PING SYSTEM NGH OIA (TIO Nett I(ALL Z(tt(5 R 3), R C)6 R 53 THIS DRAIIING IS INIEIOEO FOR VSC IM PRESERVICf AAO IN5ERVICf INSPECTIONS RGGRAIIIS CILY, MATERIAL SPEC I F I CAT ION CO)LITT CLASSI I ABC CODE CLA55r 2 ENGR CA KOGLER DRAVM K-HOA DATE 8-11-78 MASH)NO)ON P()8LIc p&rER 5VTIPLY 5YSTEII RI ()LA)Or MASM)II(ION

$0)52 W 2 VELD 6 COMPONENT IDENTIFICATION DIAGRAM 2/./g CF I 5-2(-83 0 12-22-re A 10378 NO DATE tK(os)s c x krc I(cc tctoS.trrcs.to IS Nto.ctrrrrco crt RocK rto.IO vt.rt.Cclttto vtt(5.Mrccrco It(os, rtcco tp(S-orttr tts, toot.cclc Ice~pcs ts to recco rtt~Is r(cco Vote)trcotrtro)55(EO FOR IISE 155(EO FOR IIF(COIAIICM OI4.Y REVISION K HCA K-HCA GAK LFG DY CIKD APYD K-HCA OPR I FN 16 IFCS(l)-C 16 I.031 SA 106 Qt 8'S (tl A9 Tl TLEC tdtCS-POIIP-I DISCHARGE OMG NOI HPCS-202 REY 2 a