ML20083F112
| ML20083F112 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 12/05/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Bishop T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ANPP-28350-BSK, DER-83-37, NUDOCS 8312300151 | |
| Download: ML20083F112 (7) | |
Text
0430 g7cv Arizona Public Service Company P.O. BOX 21668 + PHOENIX, ARIZONA 85036 I?S3 DEC 19 FH 3: 28' l
REGl0NV;33 December 5, 1983
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U. S. Nuclear Regulatory Commission Region V Creekside Oaks Office Park 1450 Maria Lane - Suite 210-Walnut Creek,'CA 94596-5368 Attention: Mr. T. W. Bishop, Director Division of Resident Reactor Projects and Engineering Programs
Subject:
Final Report - DER 83-37 A 50.55(e) Reportable Condition Relating to 'fissed Factory Operations on Unit 3 Steam Generator No. 2 File: 83-019-026; D.4.33.2
Reference:
A) Telephone Conversation between A. D'Angelo and R. Tucker on June 28, 1983 B) ANPP-27368 dated July 22, 1983 (Interim Report)
C) ANPP-28160 dated November 2, 1983 (Time Extension)
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Dear Sir:
Attached is our final written report of the Reportable Deficiency under 10CFR50. 55(e), referenced above.
Very truly yours, 11 ALW [
E. E. Van Brunt, Jr.
APS Vice President, l
Nuclear Projects Management ANPP Project Director EEVB/KCP: sis Attachment i
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_ Mr. TE W. ~ Bishop
' DER 83-37 PageLTwol-cc: '
. Richard'DeYoung, Director 1 1
Office.of Inspection and Enforcement.
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U.-S.~ Nuclear. Regulatory. Commission Washington, D.'C.
20555 I
T. G. Wo od s,. Jr. '
G. C.'.Andognini 4
+J.- A.f Roedel.
D;~B.1Fasnacht
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C. Rogers-B. S. Kaplan -
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'W. E.~Ide
. J. Vorees J. R. Bynum D. z D. Green -
P. P.--Klute A. C. ' Cehr -
W. J. Stubblefield
~W. G. Bingham ~
R. L. Patterson R. W. Welcher-R. M. Grant b
D. R.- Hawkinson L. E.. Vorderbrueggen G. A.LFiore111 S..Rs Frost.-
f J. Self-D. Canady Records Center Institute-of Nuclear Power. Operations
- 1100_ Circle - 75' Parkway, Suite 1500 Atlanta, GA 30339
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Mr. C. Ferguson' Project. Manager' Combustion Engineering, Inc.
X-1000 Prospect Hill Road -
. Windsor, Connecticut'06095-u h
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FINAL REPORT - REVISION ONE.- DER 83-37 DEFICIENCY EVALUATION 50.55(e)
ARIZONA PUBLIC SERVICE COMPANY (APS)
PVNGS UNIT 3-
~I.
DESCRIPTION OF DEFICIENCY As committed by the corrective action of - DER 81-43, the-Unit 3 Steam Generators were inspected as follows:
a.
Entry by Bechtel' into the Unit 3 Steam. Generator No.
2
-disclosed Combustion Engineering (C-E) Chattanooga delivered the item with missed factory operations as - documented by NCR
.ZC-010.
Dryer Region Upper Side-o There are 12 nuts that do not have full. thread engagement from the bolts - that come up from the ' bottom of the dryer support beams.
o The two steam outlet nozzles have low pressure. taps that have stainless steel elbows seal welded to the I.D. of the nozzles.
The welds are cracked approximately - one-half way around each fitting.
o Inspection of _ channel / beam fillet welds revealed 21. have crater cracking.
o Approximately 50% have the lock washers used in bolting dryers to channels do not have solid backing behind the locking joint.
o
'On one beam, piece #273-350IL, there is a 6" long cut that appears to be a false start on cutting the beam.
o Approximately 50% of the nuts, piece #273-3503, that go between the dryer assemblies have been installed backwards.
o Two bolts, piece 273-3514, were found not to be tiight against the support beam.
o While removing the steam separators, eight of the orifice plates were found to be loose, o
Dryer deck area is not clean, : appears debris was generated during fitup and welding of steam outlet-piping.
o Two steam dryer corner welds were found to be separated from base metal.
b.
Inspection by Bechtel of the secondary side of the Unit 3 Steam Generator No. 1 disclosed the following discrepancies related to CE factory operations as documented by NCR 2C-012.
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Dryer Deck'.
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-Two are strikesLwere found'.on the vessel. wall.
One strike Lo
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- approximately.1/4" in diameter. The other is an are strike
- " trail" 1/16".. wide approximately 3" long.
Both are surface rb
~ indications with~no burn-in depth.
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NineE 1/2" Lhex Juuts, PC# 273-3503 - Section F-F on Dwg..
. o
-271-020,'are.not tack welded.
o !Three Larc ' strikes were found on the steam outlet nozzle projections., Maximum of.1/8"' diameter with no depth.
o =Some areas of. the(dryer deck were not clean.
A large amount of ' burned paper. was. found under the steam outlet nozzles.- - This ' material was ' used during field welding of the steam piping.
Can' Deck o'
Inspe'c' tion of the channel / beam fillet welds seam, #2006-271 revealed with' crater cracking.-
Also, one weld has
. cracking that. extends the entire length of the weld.
o Nine dryer drains pipes are loose..
o Weld #1503-271 on ; PC #286-228, (feedwater " candy cane" coupling) is missing.
The candy canes are loose at the coupling and will ' require tightening prior to making the tack weld.
Approximately 50%' of the 'lockwashers used in ' bolting dryers o
to channels will have;to be rotated to have a solid, backing behind the -locking joint.
- In.' addition, several of the' slotted holes have..been enlarged leaving insufficient plate on which to seat.the washer.
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o One steam dryer weld (3206-273) was.found separated.
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o-One Dwg.
79273-271-021,' Detail' "U",-
weld:.#2101-271. is missing.
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o One area approximately 6" square of weld splatter located
-on vessel wall.
The area is at the 180' end of the first
[
. beam inside the 90* manway.
o ; Dust.and foreign material accumulation beneath the steam dryers.
I N
'II.
ANALYSIS OF SAFETY IMPLICATIONS
.Bechtel ~ requested assistance from C-E in evaluating and disposi-tioning. these conditions.
The attached C-E letter provides an i;
evaluation for each. defect and indicates that C-E considers the condition to be' not reportable under the requirements of
-10CFR50.55(e).
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I DER 83-37 Page Three j
However, ' Bechtel has evaluated this condition as wall as DER 81-43 as reportncle ~ under the requirements of 10CFR50.55(e) as a break ~
down ~in.- the C-E Quality'. Assurance-Program.
The evidence has required ' the project - to conduct an extensive and costly. Inspection program to assure that ' all the Steam Generators are properly assembled.
Prudent and conservative Judgement indicated that the conditions - could not remain-uncorrected and 'still have adequate
.assurace that the defects would not impair the-safety-functions of the. equipment under any postulated condition.-
III. CORRECTIVE' ACTION
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A.
All the identified nonconformances - found in Unit 3, will be
,g considered as a extension of the corrective action required for DER 81-43.
NCR's ZC-010 and ZC-012 will be - dispositioned to repair defects as required.
B.
A, copy of this report will be transmitted to C-E for their information.
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C.E Pcw2r S tsms s
Te;en 99297 s
CemNs'.on Eng'neering sne 10% T>csge N: Roao Enesor Connecticut 06095 ATTACieiENT TO DER 83-37 83 i
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J.2 POWER V-CE-19843 F2.i__3 SYSTEMS September 1, 1983
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Mr. W. G. Bingham
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Bechtel Power Corporation
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1 12400 East Imperial Highway Norwalk, CA 90650 Aesrevse in 3-7, Subjeci.: DER 83-37, Rev. O and Rev.1 [8/es -E - f5 n,
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Dear Mr. Bingham:
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The subject DER's have been reviewed with the following conclusiag.
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Z Dryer Region Upper Side Steam Generator #2 f,c c-v.f s
- 1) The twelve (12) bolts that do not have full thread engagementwid 7*cc A. wacucz.
jeopardize the structural integrity of the dryer supports, cc. K.;r..rnecx.rwn
- 2) The cracked seal welds do not impact the performance of the steam
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generator.
- 3) The cracked channel to beam fillet welds do not effect the dryer deck support integrity.
- 4) The dryers are all bolted together so that even if the dryer to channel bolts are loose the dryers can not move.
- 5) The cut in the support beam does not jeopardize the supports.
- 6) The holding ability of the bolt / nut assembly is not effected by reversing the nut.
- 7) The correct bolt number is 273-3514. The nut 273-3503 is tack welded to the bolt so it can not back off and become a loose part.
- 8) Proper operation of the steam separators does not require the orifice plates to be welded in place.
- 9) The area should be returned to the Class "C" cleanliness as shipped.
- 10) The slight steam by passing caused by the incomplete corner welds on the dryers will not effect the dryer performance.
Steam Generator #1 Dryer Deck
- 1) Since there was no burn-in depth the arc strikes will not cause any significant structural damage.
- 2) Even if the end angle to support plate is loose, the dryers can not move since they are bolted to each other and to the support channel.
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,"~ '3) See (1) abeva.
- 4) See (9) SG #2.
-Can Deck
- 1) See (3) si #2.
- 2) The Icese dryer ~ drain pipes will not effect the perfcrmance cf the steam generator.
- 3) The leese candy-cane unien will net effect the perfermance of the steam generater.
- 4) See (4) SG #2.
- 5) See (10) SG #2.
- 6) Leakage frem arcund weld 2101-271 will net effect perfermance ef the steam generater.
- 7) The weld splatter will net cause any structural damage.
- 8) See (9) SG #2.
Additienal Ccament Any leese nuts er belts frem the can deck area will in all prebability ceme te rest en the separater suppert plate. In the event that they miss the separator
- plate, they will fall into the tube sheet where they can be remeved. If the upper portien of a candy-cane comes Icese it is too large to enter the shell/ baffle annulus. The unien nut, if it ecmes Icese, will fall to the tcp of the ecenemizer bex and come to rest.
In' C-E's epinien, the deficiency is net repertable under 10CFR 50.55(e).
C-E's evaluatien was performed in accordance with eur Quality Assurance of Design Manual as indicated by FAR No. 14473-86 (Unit 3). These documents are avail-able for review at the C-E Windser office.
Very truly yours, C. Nergus Projee ager CF/ WOW:jlb V-PSP-884 F47577 cc: Messrs:
E. E. Van Brunt, Jr.
G. A. Butterwerth G. C. Andegnini S. N. Mager J. Verees D. B. Amerine W. H. Wilson W. L. MacDenald R. H. Helm J. R. Bynum J. W. Dilk
.