ML20154S096

Forwards Rev to Request for Relief Re Inservice Insp 8.Rev Includes List of Unit 2 Piping Welds W/Limitation on Ultrasonic Volumetric Exam & Examined for ASME Section XI Credit During First 10-yr Interval

ML20154S096
Person / Time
Site:	Browns Ferry
Issue date:	09/28/1988
From:	Gridley R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8810040436
Download: ML20154S096 (10)

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TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 SN 1578 Lookout Place 8EP 281988 U.S. Nuclear Regulatory Commission -

ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - INSERVICE INSPECTION (ISI) PROGRAM REQUEST FOR RELIEF (RFR) ISI-8 TVA's letter dated June 4, 1988 provided the revised ISI program for BFN units 1, 2 and 3. The changes reflected in the subject submittal were enhancements and revisions to relief requests ISI-4, ISI-5, and 151-8. The purpose of this letter is to submit the enclosed revision to the request for relief, ISI-8.

This revision of the RFR ISI-8 includes a list of the unit 2 piping welds which have a limitation on ultrasonic volumetric examination and were examined for American Society of Mechanical Engineers (ASHE)Section XI credit during the first 10-year interval. This RFR is being submitted in accordance with 10 CFR 50.55a(g).

If you have any questions, please telephone Mr. Patrick Carter at 205/729-2689.

Very truly yours, TENNESSEE VALLEY AUTHORITY R. Gr1 ey, Manage Nuclear Licensing and Regulatory Affairs Enclosures cc: See page 2 i

a 8G10040436 080920 '

PDR ADOCK 05000259 O PNU o An Equal opportunity Employer

U.S. Nuclear Regulatory Commission SEP 281988 cc (Enclosures):

Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One Mhtte Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NH, Suite 2900 Atlanta, Georgia 30323 Browns Ferry Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35611

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ENCLOSURE i EXPLANATION FOR REMOVAL OF HELOS FROM RFR ISI-8 I. Helds removed from RFR ISI-8 listing submitted by TVA on October 4, 1982 and approved by the NRC Safety Evaluation Report (SER) issued August 30, 1983.

A. The following welds havc.been removed from the initial list because they were not examined for ASME Section XI credit during the first 10-year interval.

26"-GMS-2-19 Class 1 Main Steam 26"-KMS-2-25 Class 1 Main Steam 3"-KMS-2-63 Class 1 Main Steam 26"-KMS-2-76 Class 1 Main Steam 26"KMS-2-105 Class 1 Main Steam 10"THPCI-2-82 Class 1 High Pressure Coolant Injection B. The following welds have been removed frvo 'he initial list because it was determined from a review of the exam report, that a code scan was accomplished per IHA-2232 and Article III-4000, 1977 Edition with Addenda through Summer 1978, of ASME Section XI.

(DS) RHC-2-3 Class 1 Reactor Water Cleanup DSRHR-2-4 Class 1 Residual Heat Removal DSRHR-2-9 Class 1 Residual Heat Removal RCRDS-2-3 Class 1 Control Rod Drive Hydraulic Return Line C. Held RCRD-2-31 has been removed from the initial list because it was removed from service - Class 1 Control Rod Drive Hydraulic Return Line (Modification).

This modification capped the CRD nozzle, therefore allowing the removal of the line going to the nozzle. By removing this line the subject weld was removed and no longer needs to be inspected.

D. Class 1 feedwater-KFH-2-26 was removed from the initial list through an error and it has been added back to the list for unit 2 with this transmittal.

II. Helds removed from the 1984 Version of the RFR ISI-8 listing.

A. The following welds have been removed from the second (1984) list because they are branch pipe connection welds six inches or less in diameter and per Table IHB-2600, Item No. 84.7, Examination Category B-J, 1974 Edition with Addenda through Summer 1975 of ASME Section XI the method of examination required is a surface examination.

GR-2-63B - Class 1 Recirculation KR-2 Class 1 Recirculation KR-2 Class 1 Recirculation KR-2 Class 1 Recirculation KR-2 Class 1 Recirculation KR-2 Class 1 Recirculation KR-2 Class 1 Rocirculation

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ENCLOSURE 1 (Cont'd)

8. Weld DHS-2-6 has been removed from the second list because it was removed from service - Class ! Residual Heat Removal (Modification).

This modification removed the Head Spray System. Removal of this s.ystem and subsequent piping eliminated the subject weld.

Therefore, this weld no longer needs to be inspected.

C. Longitudinal weld scan limitations were previously reported within .

RFR ISI-8 by utilizing the circumferential weld number, which intersected the 12 inches of long seam required to be examined. The circumferential weld seam numbers have been removed from the list and replaced with a longitudinal seam identification number as indicated below.

Circumferential Weld No. Replaced with Longitudinal Weld No.

GR-2 Class 1 Recirculation GR-2-3-LS2 GMS-2 Class 1 Main Steam GMS-2-2-LS GMS-2 Class 1 Main Steam GMS-2-10-LS DRHR-2 Class 1 Residual Heat Removal DRHR-2-3-LS i

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BFNP SI-4.6.G '

Page 364 REQUEST FOR RELIEF ISI-8 REVISION 2 i

Components: Pressure-Retalning Helds in Piping Class: I and 2 Function: Pressure-retalning component Test Reautrement: Volumetric examination of longitudinal, circumferential, pipe branch connection and valve body welds, examination categories B-J, B-F, C-F, and 8-M-1.

Basis for Relief: In some cases it will be impractical to inspect all welds in accordance with paragraph T-532 of Article 5,Section V, of the ASME Code, i.e.,

nonremovable hanger interference or valve and pump casings adjoining the welds. These welds will be noted on the ultrasonic examination data sheets.

Alternate Inspection: In addition to the visual examination performed during system leakage and hydrostatic pressure tests, a "best effort" ultrasonic examination will be performed. Also, a surface examination will be performed on accessible areas of the weld (s).

_ Reporting: The tables attached hereto provide a listing of the welds which are covered by this request for relief.

Units I and 3 welds will be added as the end of the first 10-year interval for those units approaches. l l

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BFNP SI-4.6.G <

Page 364a TABLE 1 REQUEST FOR RELIEF ISI-8 UNIT 1 WELOS REQUIRING ALTERNATE SURFACE EXAMINATION WHEN ACCESSIBLE WELO IDENTIFICATION SCAN LIMITATION REASON Later Later Later

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BFNP SI-4.6.G Page 364b TABLE 2 REQUESTFORRELIEFISI-8 UNIT 2 WELDS REQUIRING ALTERNATE SURFACE EXAMINATION WHEN ACCESSIBLE Weld Identification Scan Limitation Reason TCCW-2-1 3/No Scan;4/5:30-7:00 3/ Penetration; 4/ Weld-0-Let TCCH-2-5 4/No Scan;3/6:30-7:30 4/ Penetration; 3/2" pipe attachment DCS-2-3 3 & 4/No Scan 3/ Valve Geometry; 4/ Penetration DCS-2-12 3 & 4/No Scan 3/ Valve Geometry; 4/ Penetration TCS-2-406 4/No Scan; 3/2:00 4/ Valve Geometry; 3/ Welded Brace TCS-2-421 3/No Scan; 4/8:30-9:00 3/ Valve Geometry; 4/ Instrument Line RCRD-2-49 3/No Scan; 4/5:00-7:00 3/ Valve Geometry; 4/ Inner Radius RCROS-2-2 3 & 4/No Scan 3 & 4/ Tee &

Reducer Geometry KFN-2-26 3,4,5,&6/12:00 3-6/1" Pipe Attachment KFN-2-28 3,4,5,&6/12:00 3-6/1" Pipe Attachment N4A-SE All scans limited All/ Safe-End Configuration N48-5E. 3,4,5,&6/8:00 & 9:00 3-6/ 3/4" Diameter Welded Pads N40-SE 4/No Scan; A11/12:00-3:00, 4/ Configuration: All/

4:00-6:00 Sensor Line Attachments N4E-SE 4/No Scan; A11/8:00-9:00, 4/ Configuration; All/

12:00-3:00, 4:00-6:00 Sensor Line Attachments

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BFNP SI-4.6.G Page 364c TABLE 2 (continued)

REQUEST FOR RELIEF ISI-8 UNIT 2 NELDS REQUIRING ALTERNATE SURFACE EXAMINATION WHEN ACCESSIBLE Weld Identification Scan Limitation Reason N4F-SE All scans limited All/ Safe-End Configuration THPCI-2-72 3/No Scan; 4/5:00-7:00 3/ Valve Geometry; 4/ Brace GMS-2-2 3/No scan; 4/ 1/2 node 3/ Valve; 4/ Penetration penetration GMS-2-2-LS 7,8,9,&10/2" thru 12" 7-10/ Penetration GMS-2-10-LS 7,8,9,&10/4" thru 12" 7-10/ Penetration KMS-2-25-LS1 11,12,13,&l4/No Scans 11-14/ Covered by I-beam 0 6:00 KMS-2-54-LS 11,12,13,&l4/8" thru 12" 11-14/Non-Removable Insulation ORHC-2-1A 3 & 4/No Scan 3/ Reducer Geometry; 4/ Valve Geometry ORHC-2-2 4/No Scan; 3/11:30-12:30 4/ Valve Geometry; 3/1" Weld-0-Let DRHC-2-3 3/No Scan; 4/10:00-11:00, 3/ Valve Geometry; 5:30-6:30 4/ Vent Pipe &

Instiument Line GR-2-3-LS2 11,12,13,&14/No Scans 11-14/ Support Lug 0 12:00

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BFNP SI-4.6.G Page 364d TABLE 2 (continued)

REQUEST FOR RELIEF ISI-8 UNIT 2 WELOS REQUIRING ALTERNATE SURFACE EXAMINATION WHEN ACCESSIBLE field Identification Scan Limitation Reason GR-2-8 3 & 4/No Scan 3 & 4/ Cross to Tee

& Tee Geometry GR-2-34 3 & 4/No Scan 3 & 4/ Cross to Tee

& Tee Geometry GR-2-56 4/No Scan; 3,5,&6/ 4/ Configuration; 11:45 to 12:30 & 10:30 3-6/ Weld Attachment GR-2-63A No Scans Seal Welded Blind Flange o KR-2-51-LS 7,8,9,&l0/6" thru 12" 7-10/ Rigid Restraint DRHR-2-3 3 & 4/No Scan 3/ Valve Geometry; 4/ Penetration DRHR-2-3-LS 7,8,9,&l0/4" thru 12" 7-10/ Penetration ORHR-2-5 4/No Scan; 3/11:00-1:00 4/ Valve Geometry; 3/ Support Attachment DRHR-2-12 3 & 4/No Scan 3/ Valve Geometry; 4/ Penetration TRHR-2-110 3,4,5,&6/6:00 3-6/Non-Removable Support TRHR-2-262 3 & 4/11:00-1:00 & 3:00 3 & 4/ Hanger Mounting Bracket & Catwalk Support TRHR-2-462 3,4,5,&6/5:00-7:00 3-6/ Welded Support

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Page 364e 1

TABLE 3 REQUEST FOR RELIEF ISI-8 UNIT 3 WELDS REQUIRING ALTERNATE SURFACE EXAMINATION WHEN ACCESSIE!.E Weld Identification Scan Limitation Reason Later Later Later

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