ML20080S801
| ML20080S801 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 02/06/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| ANPP-28799-BSK, DER-83-53, NUDOCS 8402290258 | |
| Download: ML20080S801 (2) | |
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Arizona Public Service Company P O. BOX 21666. PHOENIX. ARIZONA 85036 February 6, 1984 ANPP-28799-BSK/TRB U. S. Nuclear Regulatory Commission Region V Creekside Oaks Of fice Park 1450 Maria 1.ane - Suite 210 Walnut Creek, CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Interim Report, Revision 2 - DER 83-53 A 50.55(e) Potentially Reportable Deficiency Relating to Unit 3 Embed Plates Do Not Meet Specification on WPP/QCI Requirements.
File: 83-019-026; D.4.33.2
Reference:
A) Telephone Conversation between P. Narbut and R. Tucker on August 1, 1983 B) ANPP-27597, dated August 26, 1983 (Interim Report)
C) ANPP-28323, dated November 30, 1983 (Interim Report, Rev. 1)
Dear Sir:
The NRC was notified of a potentially reportable deficiency in Reference A, Interim Reports were transmitted by References B and C.
At that time, it was estimated that a Final Report would be available by February 15, 1984 Due to the extensive investigation and evaluation required, a revised Interim Report is attached. It is now expected that this information will be finalized by May 21, 1984, at which time a complete report will be submitted..
Very truly your Clw fitLL E. E. Van Brunt, Jr.
B402290258 940206 DR ADOCK 0500053 APS Vice President, Nuclear Projects Management ANPP Project Director EEVB/TRB:ru Attachment cc:
See Page Two ZE-J 7 l \\
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Mr.LT. W. Bishop DER 83-53,
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- Page Two' cc:-
Richard - DeYoung. Director-Office of Inspection'and Enforcement U.'S; Nuclear Regulatory Commission Washington, D.- C. 20555 T.' G. Wo od s,' ' Jr.
G. C. Andognini W. E. Ide 1D. B. Fasnacht A. C._ Rogers B. S. Kaplan J..Vorees J..R.
Bynum D.- D. Green P. P. Klute
- A. C. Gehr W. J. Stubblefield-W. G. Bingham R. L. Pa tterson R. W.-Welcher R.'M.. Grant D. R. Hawkinson
-L..E. Vorderbrueggen G. A. Fiorelli' S. R. Ftost J. Self D. Canady.
- Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, GA 30339 i
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INTERIM REPORT - REVISION 2 - DER 83-53 POTENTIAL REPORTABLE DEFICIENCY ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 3 1
e
' I.c POTENTIAL PROBLEM t
Construction installation of Type N embed plates in Containment 3
. failed to meet specification and WPP/QCI requirements..
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'A' damaged beam in NW Q'uad at the 100' 6" elevation vas being
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removed per NCR CC-4043 disposition. During beam removal, it
. was discovered two '(2) Type N. insert plates were installed without the four (4).1"O x 9" Ig. anchor bolts (NCR CC-4201).
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Concretm post-placement. inspection,of inserL plates for 3C081
- has not yet-been performed.
In addition the following listed NCRs sununarize the embed plant / anchor boltLproblems by specific NCR number.
~ TOTAL-NO.
TOTAL EMBED TOTAL BOLTS TOTAL EMBED PLATES WITH TOTAL BOLTS REQUIRING BOLTS
. NCR NO.
PLATES
-OBSCURED BOLTS OBSCURED PLUG WELDING MISSING
. CC-4259
~78 8
11 181 2
s CF-4260 593 440
-987-193 0
. CJ_-4261 -
~182 14 22 351 1
CC-4262 73 26' 103 86 1
CC-4263 53 40 78' 4
0 CY-4264 11' 4
7 11 0
"CC-4265, 66 10 17 121 0
- CC-4 266' 210~
44 147
'343 0
CA-4267-166 8
18 236 11
.CT-4286
.9 9 '
83 240 9
10 CR-4310 1
.0 0
0 1
As a precautionary. measure,-approximately 10% of Units 1 and 2 wall embed plates were randomly selcted by Engineering at each level of each building for field inspection. However, additional embed plates at each building for'both units were also inspected during the 10% inspection process. :Furthermore, all wall embed plates with. critical loadings were also inspected in Unit 2 Auxiliary Building.- The resslts of the inspections are sutimarized as follows:
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' Interim. Report.- :Rev. DER 33-53 '
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Page Two.
Unit 11-10% Inspection TOTAL NO.
TOTAL EMBED TOTAL BOLTS
- TOTAL
- EMBEJ PLATES WITH TorAL BOLTS REQUIRING BOLTS BLDC.
PLATES OBSCURED BOLTS OBSCURED
~ PLUG WELDING MISSING Fuel.
-4 1
1 5
0 Diesel /
Cen 4
1
'2 -
5
~
0-Control 7
1 1
10 0
MSSS~
15 4
9 25 1
Tunnels 1
2 3
1 0
Contain-ment 8'
1 1
13 6
Auxiliary-32 16 28 37 10 Turbine
-7 1
2 18 1
'Radwaste 3'
O.
0 3
0 Unit 1,. Additional Inspection
. TOTAL NO.
TOTAL EMBED TOTAL BOLTS
- TOTAL *
-EMBED PLATES WITH TOTAL BOLTS REQUIRING BOLTS
' BLDG.
PLATES-
-OBSCURED BOLTS OBSCURED PLUG WELDING MISSING Fuel 3
1 1
3 0
Diesel /~
Gen 5
1
'l 8
0
' Control
.2 0
0 3
0
.MSSS 11 5
18 35 2
Tunnels 8
0 0
10 1
Contain-ment.
8 2
5 3
3 Auxiliary 92 4
4.
13 8
Turbine 3
2-7 6
0 Radwaste 6
1 2
9 0
Unit 2 - 10%' Ins' ection p
TOTAL'NO.
TOTAL EMBED TOTAL BOLTS
- TOTAL
- t EMBED-FLATES WITH-TOTAL BOLTS REQUIRING BOLTS BLDG.,
PLATES OBSCURED BOLTS OBSCURED PLUG WELDING MISSING
' Fuel.
6 1
1 10 0
! Diesel /
Gen
~2 0
0 2
0 Control 12 -
0 0
13 1
.MSSS' 2
0 0
5 0
-Tunnels-1-
l' 1
1 0
Contain-ment 3-1 4
3 0
Auxiliary-33 6
10 40 1
Turbine 4
0-0 8
-0
<Radwaste 13 3
4 13 0
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~4 Interim Repart - Rev. 2 -1 DER'83-53 Page Three n
Unit 2l-Additional Inspection-i
' TOTAL-NO.
l TOTAL EMBED TOTAL BOLTS *'
TOTAL
- EMBED
' PLATES WITH TOTAL BOLTS. REQUIRING
. BOLTS BLDG.-
PLATES' OBSCURED BOLTS OBSCURED
-PLUG WELDING MISSING T
-Fuel..
7 1
2 8
0 L Diesel /.
Gen 13.
0 0
2 1
Control.
4 1.
' l-4 0
g
_ MSSS.-
7 1
2 12 2
- Tunnels 1
0 0
2 0
1Contain-
- ment 5
0 0
12 0
LAuxiliary- '72-8 10 99 11 Turbine' i3 1
2 3
0
,Radwaste-3 1
1 4
0 Unit'2 - All plates with critical loading in Auxiliary Bldg.
TOTAL NO.
. TOTAL EMBED TOTAL BOLTS TOTAL EMBED
. PLATES'WITH
, TOTAL BOLTS REQUIRING BOLTS PLATES OBSCURED BOLTS OBSCURED PLUG WELDING MISSING 23-14 19 29 2
1*-See nota IIB 5c
' II.
APPROACH TO AND STATUS OF' PROPOSED RESOLUTION
- An Engineering walkdown team was formed to investigate embedded
. plates listed above to determine ~ the structural adequacy of the cited embed plates. The results to date ccn be summarized as follows:
A.
Unit 3 IS. The anchor bolts with visible insufficient thread engagement were plug welded.in accordance with Section
~7.4~of Spe:ification No =13-CM-308.
1 2.
Embed plates with-identified missing _ bolts (1 or 2 4
- missing: bolts per plate) were evaluated individually
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- and found to.be struct'urally' acceptable as the "as built". plate' desiRn capacities are higher than the applied loads. fHowever,.DCNs'have been issued for all
- the plates with missing bolts to prevent additional attachments or loads.
- 3. -The two defective type N plates in the' Unit 3
'Containiment-Building were replaced;by new plates with Maxi-bolts: (documented in NCR CC-4201).
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' Interim; Report
.Rev.'2 - DER 83-53
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.Page Four.
- 4.
One embed plate on'the Turbine Pedestal with all bolts faissing was removed'by DCN_and deleted from Unit 3 engineering design drawing (documented in NCR CT-4286)
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-5.. Embed plates'with bolts covered by attachments were evaluated individually and all were found to be structurally acceptable.
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B..
Units l'and 2-
- 1. 'The anchor bolts with visible insufficient thread engagement will~ be, plug welded in accordance with
.Section 7.4 of specification No. 13-CM-308 i
12.' Embed:hlatesiwithidentifiedmissingbolts(1or2 Laissing bolts per plate) will.be evaluated individually for its. structural acceptance and DCNs will be issued
~ for all the ' plates 'with missing bolts' to prevent-additional attachments or loads.
l3._ One: defective type J ' embed' plate in the Unit 2
-Auxiliary Building will be modified by adding Maxi-bolts'to anchor the existing plate to the concrete
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'(documented in NCR CA-4423).
- 4.. : Embed plates with bolts covered by attachments will be evaluated for its. structural acceptance..
5.
Field is in the process of verifying plates having bolts with excessive recess and missing bolts
- conditions.Inr examining the ' quality control documentations and performing l_ ultrasonic examinations.
NCRs.will remain open pending the final results of
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further field investigations.
III..
. PROJECTED COMPLETION OF CORRECTIVE ACTION AND SUBMITTAL OF THE-
-FINAL REPORT
. Evaluation of this condition and submittal of the Final Report is forecast to be completed by May 21, 1984.
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