ML20215N462
| ML20215N462 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 10/31/1986 |
| From: | Bailey J GEORGIA POWER CO. |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| GN-1142, NUDOCS 8611050444 | |
| Download: ML20215N462 (9) | |
Text
r-Georgi 2 Power Company.
- ^ ~ ~ "
- Post Offics Box 282 Wayresbora Georgis 30830 Telephone 404 554-0%1 404 724-8114 Southern Company Services,Inc Fbst Office Box 2625 Birmingham, Alabama 35202 Telephone 205 8704011 y
g pm 0ctober 31, 1986 Director of Nuclear Reactor Regulation File: X7BC35 Attention:
Mr. B. J. Youngblood Log:
GN-ll42 PWR Project Directorate #4 Division of PWR Licensing A U. S. Nuclear Regulatory Commission Washington,-D.C.- 20535 NRC DOCKET NUMBERS'50-424 AND 50-425 CONSTRUCTION PERMIT NUMBERS CPPR-108 AND CPPR-109 V0GTLE ELECTRIC GENERATING PIANT - UNITS 1 AND 2 SER OPF4 ITEM 2: PRESERVICE INSPECTION (PSI) PROGRAM
Dear Mr. Denton:
Attached please find revisions to Relief Request 33 and Relief Request 45.
A-list of welds showing the results of UT examinations evaluated per the Winter Addenda of ASME Section XI verifying that the indications are code allowable is also provided in support of RR-45.
If your staff requires any additional information, please do not hesitate to contact me.
Sincerely,
.h.
J. A. Bailey Project Licensing Manager JAB /sm Attachment xc:
R. E. Conway NRC Regional Administrator R. A. Thomas NRC Resident Inspector J. E. Joiner, Esquire D. Feig B. W. Churchill, Esquire R. A. McManus M. ' A'. Miller (2)
L. T. Gucwa
.B. Jones, Esquire Vogtle Project File G. Bockhold, Jr.
0821V B6 105o44 hM hD ADOC h PDR j j
VEGP-1 RR-33 Component or Relief Area Volumetric examination of pressure-retaining bolting in Safety Injection Pump Housing.
(Class 2)
Safety Injection Pump casing studs I.D. Nos. - 11204-P6-003-801 through B32.
Requirement From Which Relief is Requested Item No. C4.30, Category C-D, Table IWC-2500-1 of ASME Section XI, requires a volumetric examination of pressure-retaining bolts and studs that are greater than two inches in diameter.
The examination is limited to t pump from a group of pumps which are similar in design, size,,he bolting in one function, and service.
Relief is requested from the volumetric examination of pump casing g
studs during~Preservice Inspection.
Basis for Relief The pressure retaining studs of safety injection pumps are inaccessible for volumetric examination while in place under tension. To reach the studs for examination, the cap nuts must be removed, which requires breaking the pressure boundary of the pump.
Disassembly of the pumps to solely perform a baseline examination is not warranted during the preservice inspection.
Alternate Examination A surface examination of these studs has been performed by the pump manufacturer during fabrication.
Fabrication examination records will be documented and identified in the Vogtle Unit ~1 PSI final report. An ASME Section III hydrostatic test has been performed to further ensure the integrity of the pumps.
In addition, the safety injection pumps for VEGP-2 are identical in design, size, function, and service as well as were fabricated under the same specifications.
A baseline ultrasonic examination of the studs in both of the VEGP-2 safety injection pumps will be performed during the Preservice Inspection.
7-57 002 Rev. 4
VEGP-1 RR-45 Component or Relief Area Acceptance standards for the twenty-four welds (see Attachment 1) which were evaluated to have non-geometric recordable NDE indications during the VEGP-1 PSI.
Requirement from which Relief is Requested ASME Code Section XI 1980 Edition with Winter 1980 Addenda Subparagraph.
IWB-3410.1 states that 'the acceptance standards referenced in Table IWB-3410-1 shall be applicable to those components '(a) whose material properties are in accordance with those stated in the referenced tables and (b) where the maximum postulated-defect that determines the limiting operating conditions conforms with the recommendations stated in Section III. Division I Appendices.
Basis.for Relief 4
A review of the material specifications for the components listed in indicates that not all of the criteria in the applicable IW8-3500 table are met for these welds. A comparison of the material properties in the IWB-3500 tables versus the actual material properties shows that the differences listed in Attachment I have no effect on using the applicable tables for the evaluation of indications as shown by the notes for Attachment 1.
Alternate Examination The Code-required examinations were performed on these components and the non-geometric recordable indications were determined to be acceptable per the applicable Winter 1980 IWB-3500 table.
l i
7-82 002 Rev. 4
Notes for Attachment 1 i
i 1.
Table IWB-3511-1 references NB-2300 while the secondary side of the steam generators is typically ASME Class 2 which would imply material testing per NC-2300.
As noted in Paragraph 5.4.2.1 of the VEGP FSAR, the secondary side of the VEGP steam generators was fabricated per Section III of the ASME Code for-Class 1 components.
Table IWB-3511-1 of the Winter 1980 Addenda was used to evaluate the planar indications and they are Code-allowable.
Furthermore, this position is technically justified since the Winter 1983 Addenda includes IWC-3500 tables with acceptance standards essentially the same or more flexible than those of IWB-3500 of the 1980 Edition.
These indications were evaluated to Table IWC-3510-1 in the Winter 1983 Addenda and they are Code-allowable.
2.
Tables IWB-3511-1 and -2 apply only to component with thickness greater than or equal to four. inches, while the steam generator thickness is less than four inches.
This position is technically justified since the Winter 1981 Addenda permitted Tables IWB-3511-1 and -2 to be used for thicknesses down to 2-1/2 inches. These' indications were evaluated to the Winter 1980 Addenda tables and they are Code-allowable.
3.
The minimum yield strength in Table IWB-3511-1 does not agree with the actual minimum yield strength of the components.
The use of higher specified minimum yield strength materials is justified in the component design in accordance with Paragraph G-2110 (b) of Appendix G of ASME Section III, using the standard postulated defect size in this appendix.
Westinghouse has generated the supporting fracture-toughness data for these materials u referenced in the applicable stress reports and VEGP FSAR Paragraph 5.2.3.3.1.
Satisfying these Section III requirements demonstrate applicability of ASME Section XI Table IWB-3511-1, even considering the higher minimum yield strength materials of these components.
4.
Tables IWB-3511-1 and -2 apply only to components with thicknesses greater than or equal to four inches while the Pressurizer thickness is less than four inches.
7-87 002 REV. 4
This position is technically jpstified since the Winter 1981 Addenda permitted Tables IWB-3511-1 and -2 to be used for thicknesses down to 2-1/2 inches.
These indications were evaluated to the Winter 1980 l
Addenda tables and they are Code-allowable.
5.
Table IWB-3514-2 referwnces N8-2300 while the Class 2 piping was constructed to NC-2300.
IWC-3000 states that IWB-3000 may be used for Class 2 components in the 1980 Edition of ASIE Section XI. _ The applicable table, IWB-3514-2, states that the materials must meet the twquirements of NB-2300. Since Class 2. components implicit in IWC-3000 that NC-2300 applies.are constructed to NC-2300 and not This is. consistent with subsequent Code tables for Class 2 components other than piping.
The purchase specification for these piping materials is in accordance with ASME Section III NC-2300, without modification or exemption to the impact test requirements.
rules for Class 2 components.This is consistent with the A"X Section III design 1
7-88 002 Rev. 4
PIANAR INDICATIONS EVAWATED TO WINIER 1980 ADDEN A WEID IND.
IBUlli WELD DEP111 OF FLAW-711RU-WALL ANGLE REMARKS J
NO
'IIIICKNESS
'IOP BOFIIM ACIUAL ALIEWABLE 1-1201-B6-001-WO3 1
1.5" 3.7" 2.47" 2.569" 1.4%
2.7%
60 AIL FOUR IEICATIONS UPPER SHELL 2
.25" 3.81" 3.156" 3.36" 2.7%
6.1%
60 EVAWKIED TO IWB-3511-1.
10 3
.5" 3.7" 2.501" 2.615" 1.5%
3.0%
60 NO RECORDABE IEICA-TRANSITIN CONE 4
.238" 3.7" 3.277" 3.515" 3.2%
5.5%
60 TIONS WITH A 45* EXAM, NO LIMITATIONS. 95%
EXAM WI111 A 60*.
1-1201-B6-002-WO4 1
.875",
3.6" 2.907" 3.037" 1.8%
2.9%
45 EVA W ATED TO IWB-3511-1.
TRANSITION 0]NE NO RECORDABE INDICA-10 TIONS Willi A 60* EXAM.
SIUB BARREL NO LIMITATIONS.
1-1201-B6-002-W19 1
11.875" 3.8" 1.751" 1.831" 1.1%
2.6%
60 ELTIPLE PIANAR FEEDWATER N0ZZLE INDICATIONS EVAWATED TO SHELL 10 IWB-3511-1. NO RECORDABLE INDICATIONS Willi A 45* EXAM. NO SCAN F1EM N0ZZE SIDE DUE TO CONFIGURATION.
1-1201-V6-002-WO3 1
1.25" 4.15 2.185" 2.271" 1.0%
2.7%
45 EVAWKIED 'lU IWB-3511-1.
UPPER MIDDLE 1
1.5" 4.2" 2.35" 2.557" 2.3%
2.85%
60 NO LIMITATIONS.
SHELL 'IO IDWER 2
.5" 4.2" 4.1%
5.2%
60 MIDDLE SHELL 1-1201-V6-002-WO5 1
.5" 3.55" 2.333" 2.632" 4.2%
4.6%
45 EVAWAIED TO IWB-3511-1.
IDWER SHELL 10 NO REODRDAB E INDICA-IDWER HEAD TIONS WIIH A 60* EXAM.
%% OF WEID IDUIH EXAMINED DUE TO PADS.
1-1301-002-09 1
.4" 1.9"
.664"
.693" 1.0%
7.2%.
60 EVAWATED 10 IWB-3514-2.
VALVE 10 PIPE NO LIMITATIONS. EXAM PERFORMED F1EN PIPE SIDE.
I.D. GED EIRY RECORDED Wrlli A 45.
FIRER INDICATIONS EVALUATED 'IO WINIER 1980 ADDENDA s
WEID IND.
IDKal WEIB DEFIH OF FIAW
'IHRU-WAIL ANGIE RDiARKS NO
'lHICKNESS
'IOP Bor101 ACTUAL ALIDWABIE 1-1301-003-01 4
6.1" 2.0" 1.131" 1.266" 3.4%
7.6%
45 EVAllRTED 'IO IWB-3514-2.
PDEIRATION 10 7
5.4" 2.0"
.976" 1.03" 1.4%
7.2%'
45 NO LIMrIATIONS.
PIPE 8
5.4" 2.0" 1.407" 1.527" 3.0%
7.2%
45 2
5.8" 2.0"
'1.17" 1.233" 1.6%
7.2%
60 3
6.1" 2.0"
.890"
.899" 0.25%
7.2%
60 4
1-1301-003-02 1
.65" 1.95" 1.401" 1.519" 3.0%
8.0%
60 EVAIDATED 'IO IWB-3514-2.
PIPE 10 PIPE NO LIMITATIONS.
I.D. GE0EIRY RECORDED WI11145*.
1-1301-003-08 1
.7" 2.9" 1.41" 1.65" 4.7%
8.55%
60 EVAIBATED 10 IWB-3514-2.
PIPE 10 VALVE I.D. GECNETRY RECORDED WITH 45. 59% OF WELD LENG1H EXAMINED DUE 10 0.D. GEGEIRY.
1-1301-004-02 1
.4" 2.0"
.969" 1.107" 3.51 9.5%
45 EVAIDATED 'IO IWB-3514-2.
PIPE 10 PIPE 2
.5" 2.0"
.723" 1.01" 7.2%
11.4%
'45 NO LIMITATIONS.
3&4*
1.0" 2.0"
.705" 1.01" 7.6%
9.0%'
45
- Ile. 3 & 4 ARE MJLTIPLE 5
.3" 2.0"
.745"
.899" 3.9%
11.4%
45 FIANAR INDICATIONS.
1
.3" 2.0" 1.1" 1.173" 1.9%
8.46%
60 2
.3" 2.0"
.95" 1.033" 2.1%
8.82%
60 3
.2" 2.0"
.95" 1.127" 4.5%
11.4%
60 1-1301-106-02 1
.4" 1.1"
.926"
.999" 3.4%
9.4%
60 -
EVAIDATED 10 IWB-3514-2.
REDUCER 10 2
.7" 1.1" 1.035" 1.1" 5.9%'
7.7%
60 NO LIMITATIONS.
I.D.
ELBOW GEGElRY RECORDED WrlH A 45*.
1-1301-107-02 1
3.75" 1.56"
.912" 1.012" 3.2%
7.3%
60 EVAIDATED 10 IWB-3514-2.
REDUCER TO 2.
4.25" 1.2"
.899"
.927" 1.2%
8.1%
60 NO LIMITATIONS.
ELBOW I.D. GEGEIRY RECORDED WITH 45*.
9 PIANAR INDICATIONS EVAWATED 'ID WIN 11R 1980 ADDENDA WE1D IND.
LDUI11 WEID DEP111 OF FIAW 111RU-WALL ANGLE RDfARKS NO 1111CKNESS TOP BOTIIM ACIUAL ALIEWABIE 1-1305-058-02 1
.25" 1.3"
.479"
.521" 1.6%
8.4%
45 EVAWATED TO IWB-3514-2.
PIPE 10 2
1.0" 1.4" 1.321" 1.351" 5.6%
7.6%
45 NO LIMITATIONS. IND BRAN 0100tN.
3
.3" 1.37" 1.322" 1.366" 3.5%
9.02%
45 2 & 3 ARE SURFACE 1
.25" 1.25" 1.137" 1.24" 8.8%
9.8%
60 INDICATIONS.
1-1305-058-09 3
.375" 1.18" 1.077" 1.146" 8.7%
9.9%
45 EVAWATED TO IWB-3514-2.
PENEIRATION 'ID NO LIMITATIONS. R00r PIPE GEXPEIRY RECORDED W111160.
1-1305-062-01 4
.2" 1.219"
.613"
.662" 2.2%
10.1%
45 EVAT11ATED TO IWB-3514-2.
FORGING 'ID 5
.016" 1.219"
.833"
.849" 0.6%
11.8%
45 NO LIMITATIONS. ROOT PIPE GEDEIRY RECORDED WI111 A 60.
1 1-1305-062-04 5
.25" 1.12"
.444"
.594" 6.7%
11.8%
45 EVAWATE 10 IWB-3514-2.
PIPE 10 VALVE NO LIMITATIONS. ROOT GEDEIRY RECORDED 4
WIIII A 60*.
1-1305-062-23 6
.25" 1.35"
.832"
.891" 2.18%
9.4%
45 EVAWATE TO IWB-3514-2.
E120W 10 PIPE NO LIMITATIONS. ROOT GEDEIRYRECORDED Wr111 A 60*.
1-1305-064-10 2
.25" 1.08"
.62"
.815" 9.0%
11.8%
45 EVAWATED TO IWB-3514-2.
VALVE 10 PIPE 3
.5" 1.08"
.685"
.705" 0.9%
8.55%
45 NO LIMITATIONS. SIAG 4
.125" 1.08"
.94"
.826" 5.28%
11.8%
45 INCLUSIONS - VERIFIED l
5
.25" 1.08"
.717"
.734" 0.7%
8.5%
45 WITH RT FIIN I.D.
6
.25" 1.08"
.633"
.791" 7.3%
9.9%
45 GEDEIRY RECORDED WrIll A 60*.
I
IMINAR LNDICATIONS EVAWATED 10 WINER
-1980 ADDENDA WELD IARGEST IMINATION RDiARKS 1-1201-B6-001-W18 3.15 SQ. IN.
CALIBRATED 0* SCAN ON WEIDS PWS %T OF BASE PETAL.
UPPER HEAD 10 32" SIEAM OU11Er 1-1201-V6-002-01 1.725 SQ. IN.
CALIBRATED 0* SCAN ON WELDS PWS Vr OF BASE lETAL.
UPPER HEAD 10 UPPER SHELL 1-1201-VC-002-W11
.225 SQ. IN.
CALIBRAIED 0* SCAN ON WEIDS PLUS Vr OF BASE }ETAL.
UPPER HEAD 10 6" SAIT1Y N0ZZIE 1-1201-V6-002-W12
.5 SQ. IN.
CALIBRATED 0* SCAN ON WEIDE PWS VT OF BASE }ETAL, UPPER HEAD 10 6" SAFEIY N0ZZIE 1-1201-V6-002-W15 2.05 SQ. IN.
THIS WELD IS IUr RIQUIRED BY CODE, IT WAS PERFORPED MANWAY 10 AT GPC'S REQUEST. CALIBRATED 0* SCAN ON WEIDS PWS VT UPPER HEAD OF BASE M T. AL.
1-1201-V6-002-W16
.315 SQ. IN CALIBRATED 0* SCAN ON WEIBS PWS VT OF BASE }ETAL.
m WER HEAD 10 14" SURGE N0ZZIE