ML20132F720
| ML20132F720 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/12/1996 |
| From: | Mccollum W DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9612260062 | |
| Download: ML20132F720 (17) | |
Text
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'o DukeIbuer Canpany Wwwk &1cOwn Jk
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Catau ba Nudear Generation Apartment Vice1%sdent
[
4800ConcordRoad.
(803}Ul339 Office
't krk. SC29745 (SfB)!314126litr ouaeom l
December 12, 1996 t-I l
U.S. Nuclear Regulatory Commission Attention:
Document Control Desk l
i Washington,'D.C. 20555-0001 l
l
Subject:
Duke Power Company
)
l Catawba Nuclear Station, Unit 1 Docket No. 50-413 1
l Request for Relief from 1989' edition of ASME Boiler
)
and Pressure Vessel Code,Section XI.
l Serial No. 96-04 1
I Pursuant to 10'CFR 50.55a (a) (3) (ii), Duke Power Company requests relief from the 1989 edition of ASME Boiler and i
Pressure Vessel Code,,Section XI for Catawba Units 1.
l l
l Complete coverage of two welds in the Safety Injection System was not obtained during Unit 1 end-of-cycle 9 refueling I
outage. Complete coverage was not possible due to' component
. thickness and geometric configurations. Duke Power Company believes that with the limited coverage obtained, an acceptable level of quality.and safety has been achieved and public health and safety will-not be endangered by allowing l
relief from the code requirements.
The attached Enclosure 1, Relief Request 96-04, provides a
' detailed description and justification for this request.
Should there be any questions concerning this request, please call D. Tower at (803) 831-3419.
i Very truly yours, f
c William R.-McCollum, Jr.
9612260062 961212 PDR ADOCK 05000413 P'
PDR nam mmma
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i Document Control Desk l
Page 2 December 12, 1996 Attachment i
F i
l XC:
S.D.
Ebneter, Regional Administrator Region II i
t R.J.
Freudenberger, Senior Resident Inspector l
Catawba Nuclear Station i
l P.S.
Tam, Senior Project Manager ONRR i
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4 ENCLOSURE 1 RELIEF REQUEST 96-04 i
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ENCLOSURE 1 RELIEF REQUEST 96-04 s
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l Request for Relief Serial No. 96-04 Page 1 of 3 r
DUKE POWER COMPANY l
STATION CATAWBA UNIT 1 10-YEAR INTERVAL REQUEST FOR RELIEF NO. 96-04 1
1 I.
System / Component (s) for Which Reliefis Requested:
l ASME Section XI Code Class: 1 Examination Category: B-J Circumferential Piping Welds - Safety Injection System Weld Number Item Number 1NI148-10 B09.011.163 1NI148-11 B09.011.164 l
II.
Code Requirement:
ASME Section XI,1989 Edition, Examination Category B-J Pressure Retaining Welds In Piping, Table IWB-2500-1, Figure Number IWB-2500-8. Item Number B09.011 requires a volumetric examination of essentially 100% of the weld length and adjacent base material for all piping welds.
III.
Code Requirement from which Reliefis Requested:
i Reliefis requested for the above identified Class 1 Circumferential Piping Welds from meeting the coverage requirements as defined in ASME Section XI, Appendix III, Article 111-4000,111-4420.
l
Request for Relief Serial No. 96-04 Pege 2 cf 3 IV.
Basis for Relief:
During the ultrasonic examination of the welds shown in Attachment 1, two directional coverage required by ASME Section XI, Appendix III as modified by Code Case N-460 could not be obtained. Causes of these limitations are single sided access and austenitic weld material. Where possible, a combination of angles and wave modes were used to maximize the coverage obtained. The weld and base metal at the component inside surface was covered from at least one l
direction with a minimum of one angle. The examinations were perfomed with a l
procedure and personnel qualified in accordance with ASME Section XI, l
l Appendix VIII,1992 Edition with 1993 addenda. This procedure has been l
qualified for detection of far side flaws when examining through austenitic weld metal.
t V.
Alternate Examinations or Testing:
No additional examinations are planned for Weld ID Numbers INil48-10 and INIl48-II. The use of radiography as an alternate volumetric examination method for Weld ID Numbers INil48-10 and INI148-11 is not practical due to component thicknesses and geometric configurations. Other restrictions making
]
radiography impractical are the necessity to use double wall techniques due to j
inaccessibility of the ID surface and physical barriers prohibiting access for placement of source, film, number bands, etc. Duke Power Company will i
continue to use the most current ultrasonic techniques available to obtain maximum coverage for future examinations of these weld numbers.
VI.
Justification for the Granting of Relief:
Although the coverage requirements of ASME Section XI, as defined in Appendix III could not be met, the amount of coverage obtained for these examinations provides an acceptable level of quality and integrity. Based on these evaluations, it is Duke Power Company's opinion that the limited coverage will not endanger the health and safety of the general public. Duke Power Company will perform UT examinations to the extent practical using procedures and personnel qualified in accordance with ASME Section XI, Appendix Vill,1992 Edition with 1993 Addenda.
L l
1 Request for Relief i
Serial No. 96-04 Page 3 of 3 VII.
Implementation Schedule:
These examinations will continue to be scheduled in accordance with the requirements of ASME Section XI for future Inspection Intervals at Catawba j
Nuclear Station, Unit 1.
t NDE LevelIll Review By:
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Date
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Description Table UT Examination Data 1
i
ASME Clzo 1 Inservice Inrpection Regre:t For R:li:,f Nr. 96-04 For Octawba Unit 1 Br. sed On ASME Sectirn XI-1989 Coda Attachmert 1 Page1of1 6.u; Item No.
Exam Category System Or Area To Be Reason For Request Proposed Allemate
/ Figure No.
Component Exammed Examination 809.011.163 B-J (NI) Safety injecten Class 1 Limted scan due to geometric configurabon None IWB-2500-8 System Cwcumferential Actual coverage obtained = 59.85%
Piping Weld B09.011.164 B-J (NI) Safety injection Class 1 Limited scan due to igvii.eu, configuration.
None IWB-2500-8 System Circumferenbal Actual coverage obtained = 61.00%
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Piping Weld e
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FORM NDE-UT-1G DUKE POWER COMPANY ULTRASONIC CALIBRATIONIEXAMINATION RECORD FOR NDT-136 INSTRUMENTS REVISION 5 Station:
Catawba Unit:
1 Date:
6/18/06 Sheet Number:
9601018 Procedure:
NDE-600 Rev:
7 FC:
N/A Couplant:
ULTRAGEL ll Batch Number-093001 Examiner: Jay A. Eaton hdQ Level:
11 Manufacturer:
STAVELEY Pyrometer S/N:
MCNDE 27025 Examiner: B. Dale Jolly 3, h( Qg3 Level: 1 Serial No:
975K Cal Due:
10/3/96 REFERENCE BLOCK
\\
\\
SIMULATOR BLOCK Search Unit # 1 Search Unit # 2 ID:
ROMPAS ID:
A09319 Reflector Type: RADIUS ID:
A09319 Reflector Type: RADIUS S/N:
A09319 Material:
SS Metal Path:
1" Metal Path:
1" CABLES Search Unit # 1 Settings Search Unit # 2 Settings Type: Singie O Dual O RG58 0 nG174 g Type:
Sin 9'e O Dual O Range 5.0 Range 2.5 Size:
.5 Size:
.5 Delay 0.341 Delay 0.523 Freq:
2.25 Mhz Freq-2.25 Mhz Velocity 0.124 Velocity 0.126 Length 6 FT Manuf:
KBA Manuf KBA Units IN Units IN Ser n :
4 Initial Cal Time Ser no:
42967 Display FILT1 Display FILT1 Meas. g 60*
Freq 2.25 Meas. g 45' Freq 2.25 s u #1 1406 s u #2 1350 Wedge:
MSW-OC Wedge:
MSW-QC Reject OFF Reject OFF Cal Checks Time Wave Mode: Long.O Shear @
Wave Mode: Long.O Shear e Pulse 222 puise 222 Date s u.#1 s u #2 inmais Bmodat O Bi4hdd O oomping 300 o mping 300 6/18N 1418 1405 1 Major Screen Div =
0 25 inches 1 Mai r Screen Div =
0.5 inches Rep Rate 2000 Rep Rate 2000 6/1B/96 1430 1441 O'
Scan: exiai O cire. a Scan: exiai e cire. O h
Dual O Pulse Echo O Dual O Pulse Echo C 6/18/96 1440 1450 FINAL Record indications Limitations Scanning dB Scan Direction Exam Date and Time Surface item No:
yes no yes no s.u #1 s.u #2 Axial Cire.
Start End Temp
- B09 011.165 -
0 0
0 0
45 50 YES YES 6/18/96 1350 6/18196 1418 72*F B09 011.166 O
O O
B 45 50 YES YES 6/18/96 1350 6/18/96 1418 72*F B09 011.163 -
O O
O O
45 50 YES YES 6/18/96 1430 6/18/96 1450 72*F B09 012.163 O
O 3,
p 45 50 YES YES 6/19/96 1430 6/18/96 1450 72*F Reviewer-Level:
Date:
Authorize in ect :
Date:
Larry Mauldin M,
I:
6/19/96
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- ve 6 sw vr, ATTacamon 2 % 2or9 FORM NDE-UT-1G DUKE POWER COMPANY ULTRASONIC CALIBRATIONIEXAMINATION RECORD FOR NDT-136 INSTRUMENTS REVISION 5 Station:
Catawba Unit:
1 Date:
6/18/96 Sheet Numbec 9601019 Procedure:
NDE-600 Revi 7
FC:
N/A Couplant:
ULTRAGEL II Batch Numbec 093001 Examiner: Jay A. Eaton hj6 Level: ll Manufacturer STAVELEY Pyrometer SIN:
MCNDE 27025 Examiner. B. Dale Jolly g, g( Qu Level: I Serial No:
975K Cal Due:
10/3/96 REFERENCE BLOCK
\\
\\
SIMULATOR BLOCK Search Unit # 1 Search unit # 2 ID:
ROMPAS ID:
A09319 Reflector Type: RADIUS ID:
A09319 ReflectorType: RADIUS SIN:
A09319 Material:
SS Metal Path:
1" Metal Path:
1" CABLES Search Unit # 1 Settings Search Unit # 2 Settings Type:
Singie a Dual O RG58 0 noir 4 O Type:
Singie a Dua O a,ng, 3.o Range 2.5 ay 0.341 N ay 0.523
- of connectors 0
Freq:
2.25 Mhz Freq-2.25 Mhz Velocity 0.126 Velocity 0.124 u
6R Manuf:
KBA Manuf:
KBA Units IN Units IN Ser n :
43072 Initial Cal Time Ser no:
42967 Display FILT1 Display FILT1 Meas. g 45' Freq 2.25 Meas. g 60*
Freq 2.25 s u #1 1406 s u #2 1350 Wedge:
MSW-OC Wedge:
MSW-QC Reject OFF Reject OFF CalChecks Wave Mode: Long. O Shear G Time Wave Mode: Long. O Shear @
Puise 222 Pulse 222 Date s.u.#1 s.u #2 indiais Bi-M dai O Damping 500 Bi-Modal O Damping 500 6/18/96 1430 1441 1 Major Screen Div =
0 25 inches 1 Maj r Screen m =
ns es Rep Rate 2000 Rep Rate 2000 h
Scan: axial O circ-O Scan: axiai O cire. O 6/18/96 1440 1450 s
Jack: T@RO Jack: TBRO FINAL Dual O Pulse Echo @
Dual O Pulse Echa O Record Indications Limitations Scanning dB Scan Direction Exam Date and Time Surface item No:
yes no yes no s.u #1 s.u #2 Arial Cire.
Start End Temp
- B09 011.164 -
O B
B O
45 50 YES YES 6/18/96 1430 6/18/96 1450 72*F B09 012.164 0
9
@, ;E 45 50 YES YES 6/18/96 1430 6/18/96 1450 72*F A%
Reviewer:
Level:
Date:
Authorized inspect Date:
h*I*h Larry Mauldin lil 6/19/96
Aeaues r rotz acaw u-on ATTacm euT f Paaor9 DUKE POWER COMPANY FORM NDE-UT-1G ULTRASONIC CALIBRATIONIEXAMINATION RECORD FOR NDT-136 INSTRUMENTS REVISION 5 Station:
Catawba Unit:
1 Date:
6/18/96 Sheet Number.
9601020 Procedure:
NDE-600 Rev 7
FC:
N/A Couplant:
ULTRAGEL 11 Batch Number.
093001 Examiner: Jay A. Eaton k)[_
Level: 11 Manufacturer STAVELEY Pyrometer S/N:
MCNDE 27025 Examiner B. Dale Jo!!y gh Q Level: I Serial No:
975K Cal Due:
10/3/96 REFERENCE BLOCK
\\
k SIMULATOR BLOCK Search Unit # 1 Search Unit # 2 ID:
ROMPAS ID:
A09319 Reflector Type: RADIUS ID:
N/A Reflector Type:
N/A S/N:
A09319 Material:
SS Metal Path:
1" Metal Path:
N/A CABLES Search Unit # 1 Settings Search Unit # 2 Settings RG58 0 nG174 g Type:
Single O Dual 8 Type: Singie O Dual O Range 3.o Range Size:
14x8mm Ske:
Delay 0.770 Delay Freq:
2.0 Mhz Freq:
Mhz Velocity 0.227 Velocity Manuf:
Manuf:
Sigma Units IN Units initial Cal Time Ser no:
2244-93001 Ser n :
Display FILT1 Display Meas. 4 Freq Meas. g 60*L Freq 2.25 s u #1 1451 s u #2 Wedge:
INT Wedge:
Cal Checks Reject OFF Reject Time Wave Mode: Long.@
Shear O Wave M de: L no. O Shear O Puise 222 Puise Date susi s u #2 inicats Bi-Modal O Bi-M dai O Damping 500 Damping 6/18/96 1500 1 Major Screen Div =
05 inches M8i ' '""
Rep Rate 2000 Rep Rate FINAL Scan: axial O circ. O Scan: axiai O cire. O 7 gag ORO Dual O Pulse Echo O Dual O Pulse Echo O Record Indications Limitations Scanning dB Scan Direction Exam Date and Time Surface item No:
yes no yes no s.u.#1 s.u.#2 Axial Circ.
Start End Temp
- B09 011.163 O
B O
O 67 YES 6/18/96 1451 6/18/96 1500 72*F B09 011.164 O
8 8
O 67 YES 6/18/96 1451 6/18/96 1500 72*F s
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&*u Authorized In/sp8ct2M36~9f n'te:&W Reviewer-Level:
Date:
D
feQuest rcrt Re.aar 9t -04 Arracamar2 /d 4or 9 FOM MM DUKE POWER COMPANY ISI LIMITATION REPORT Revision 1 Component / Weld ID: 1N1148-10 flem No: B09.011.163 Remarks:
SURFACE BEAM DIRECTION
< WELD TAPER
@ NO SCAN O1 02 01B2 O m O cm O LIMITEDSCAN FROM L toL INCHES FROM WO C/L to 0.7" ANGLE: OO O 4s 9 60 8 Other 60*L FROM,_ O_ _ DEG to _ _360_DEG SURFACE BEAM DIRECTION
< VALVE CONFIGURATION
@ NO SCAN O1 82 9102 O m O cm O LIMITED SCAN FROM L _----- to L INCHES FROM WO _ __ __C_/L- _. to - _ BEY _O_N_D __
ANGLE: OO O 45 8 60 B Other 60*L FROM 0
DEGto 360 DEG SURFACE BEAM DIRECTION O NO SCAN O1 02 0102 O cw 0 ccw O LIMITED SCAN FROM L to L INCHES FROM WO to ANGLE: OO O 45 0 60 0 Other FROM,_ _ _ DEG to _ _ _ _DEG SURFACE BEAM DIRECTION O NO SCAN O LIMITED SCAN O1 02 0102 O cw 0 ccw FROM L to L INCHES FROM WO to ANGLE: OO O 45 0 60 0 Ott er FROM DEG to Prepared By: Jay Eaton g
Level:
ll Date: 6/18/96 Sketch (s)attacy @ yes,0 no Sheet
/ of f Reviewed By: Larry Mauldi gg* Date:
6/19/96 Authorized Inspector y
Date: ),gg
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DUKE POWER COMPANY NDE-91-1 q
5 Limited Examination Coverage Worksheet M
Revision 0 I
Examination Volume / Area Defined y
h G Base Metal O Weld O Near Surface O Bolting O Inner Radius bID Area Calculation Volume Calculation g4
.42" X 1.85" =.777 sq. in. =.78 sq.in.
.78 sq. in. X 34.4" = 26.83 cu.in.
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Coverage Calculations Area Length Volume Volume Beam Examined Examined Examined Required ent Covemge Scan # Angle Direction (sq.in.)
(in.)
(cu.in.)
(cu.in.)
Axial 45/60L 2
.72 34.4 24.77 26.83 92.32 Cire.
45 CW
.34 34.4 11.7 26.83 43.61 Cire.
45 CCW
.34 34.4 11.7 26.83 43.61 4 8.11 +
80.49 x 100 59.85%
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ltem No:
B09.011.163 Level:
11 Date: 7/22/96 0
Prepared By: Jay Eaton g
h sev,ewed By: Larry Mauiein Mde/A' Level:
111 Date: 7/22/96 0
9
/equerrFod YEUS 96-0 4 Arrncamear2 h sor9 NDEM-S DUKE POWER COMPANY UT PkOFILE/ PLOT SHEET Revision 1 EXAMINATION SURFACE 2 g,d EXAMINATION SURFACE 1
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.l hl.I 148-I D
- Remarks:
Profile taken l
27G at:
0-90 t
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Examiner:
p JE_3 Level: If Date: 7 a 9L Reviewed By:
MM.%al/a o _
Level: Il4 -
Date: 7 JJ-96, 180 Sheet _8__of3 Date: 724Q-I Authorized inspector: 0 'f,i%N Micg1//
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/?Egws-r fod NEder S-04 '
lTrAestear/ /d for9 FORM NDE-UT-4 DUKE POWER COMPANY ISI LIMITATION REPORT Revision 1 Component, Weld ID: 1N1148-11 item No: B09.011.164 Remarks:
SURFACE BEAM DIRECTION
< WELD TAPER B NO SCAN O1 02 0 1 8 2 O cw 0 ccw O LIMITED SCAN FROM L, _ _ _ _ _, to L _ _ _ _ _
INCHES FROM WO,_ _C&_ _, to _ _ 0;7_" _ _
ANGLE: OO O 45 8 60 0 Other 60*L FROM,_ O_ _ DEG to _ _36_0_DEG SURFACE BEAM DIRECTION
< VALVE CONFIGURATION O NO SCAN O1 82 O 10 2 O cwO ccw O LIMITEDSCAN FROM L, _ _ _ _ _, to L _ _ _ _ _
INCHES FROM WO,_ _C/L_ _, to _ B_E_YO_ND_ _
ANGLE: OO O 45 8 60 0 Other 60*L FROM, _ O_ _ DEG to _ _360_ _DEG SURFACE BEAM DIRECTION O NO SCAN O1 02 O tO 2 O cwO ccw O LIMITED SCAN FROM L, _ _ _ _ _, to L _ _ _ _ _
INCHES FROM WO, _ _ _ _ _, to _ _ _ _ _ _
ANGLE: OO O 45 0 60 0 Other FROM,_ _ _ DEG to _ _ _ _DEG SURFACE BEAM DIRECTION O NO SCAN O1 02 0 1 0 2 O cw O ccw O LIMITED SCAN FROM L, _ _ _ _ _, to L _ _ _
INCHES FROM WO, _ _ _ _ _, to _ _ _ _ _ _
ANGLE- 00 0 45 0 60 0,Otl FROM, _ _ _ DEG to, _ _ _
e Prepared By: Jay Eaton QC I avel:
11 Date: 6/18196 Sketch (s) attached S yes Qno Sheet / of 8 Reviewed By: Larry Mauldin ghgDate:
6/19/96 Authorized Inspector-g Date: 7.g,gg
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D Limited Examination Coverage Worksheet lk%
Rev..ision 0 l
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Examination Volume / Area Defined q
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O Base Metal E Weld O Near Surface O Bolting O Inner Radius Area Calculation Volume Calculation I
.33" X 1.6" =.528 sq. in. =.53 sq.in.
.53 sq. in. X 34.4" = 18.23 cu.in.
f i
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Coverage Calculations l
l Area Length Volume Volume n
nd hmind Requ M Percent Coverage.
Scan # Angle D ct on (sq.in.)
(in.)
(cu.in.)
(cu.in.)
l l
Axial 45MOL 1
.45 34.4 15.48 18.23 84.91 l
[
Cire.
45 CW
.26 34.4 8.94 18.23 49.04 j
Cire.
45 CCW
.26 34.4 8.94 18.23 49.04 j
33.3G +
S4.69 X100:
lo / *A f
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item No:
B09.011.164 n
4 Level:
ll Date: 7/22/96 Prepared By: Jay Eaton pg S Reviewed By: Larry Mauldin j,f/g Level:
111 Date: 7/22/96 yk!
d'Equesr fog A'sc.icf 9d-64 kwramair2 lb Gor 9 NDEM-5 DUKE POWER COMPANY Revision 1 UT PROFILE / PLOT SHEET EXAMINATION SURFACE 2 EXAMINATION SURFACE 1 WbLD
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Component ID/ Weld No. g AlI.[g.n
- Remarks:
Profile taken 90 270 at:
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item No: ~3eq,e ;;. % %
Examiner-
@ jh Level: 'It Date: ~7 tz. %
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Date: -)-24 96 s
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