L-99-086, Forwards Bvps,Unit 2 SG Exam Rept for Aug 1998.Rept Provided to Document Results of SG Eddy Current Exams Performed in Aug 1998.Summary of Insps Provided in Encl 1
ML20195D436 | |
Person / Time | |
---|---|
Site: | Beaver Valley |
Issue date: | 05/28/1999 |
From: | Jain S DUQUESNE LIGHT CO. |
To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
References | |
L-99-086, L-99-86, NUDOCS 9906090167 | |
Download: ML20195D436 (26) | |
Text
1 Beave Valley Power Station Shippingport, PA 15077 0004 SUSHIL C. JAIN (412) 393-5512 Senior Vice President Fax (724) 643-8069 e o Division May 28, 1999 L-99-086 U. S. Nuclear Regulatory Commission j - Attention: Document Control Desk Washington, DC 20555-0001
Subject:
Beaver Valley Power Station, Unit No. 2 Docket No. 50-412, License No. NPF-73 1998 Steam Generator Examination Report Enclosed is a copy of the " Beaver Valley Power Station, Unit No. 2 Steam Generator Examination Report August 1998" to satisfy the requirements of Technical Specification 4.4.5.5.b. This report is provided to document the results of the steam generator eddy current examinations performed in August 1998. A summary of the inspections is provided in Enclosure 1. The attachments provide the specific tube data. Note that no tubes have been repaired by sleeving to date; therefore, no sleeve inspection or repair is addressed in this report.
Sincerely, g==> 4 g '
Sushil C. Jain c:
Mr. D. S. Collins, Project Manager Mr. D. M. Kern, Sr. Resident Inspector Mr. H. J. Miller, NRC Region I Administrator l
DEllVERING 9906090167 990528 l
PDR ADOCK 05000412 O U A L I-T Y P
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ENCLOSURE 1 < rase i or 23 Beaver Valley Power Station Unit No. 2
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August 1998 Exarnination The steam generator eddy current examinations and data analysis performed during August 1998 were in compliance with the Beaver Valley Power Station Unit #2 Technical Specifications, NRC Regulatory Guide 1.83, the EPRI Steam Generator Examination Guidelines, Volume 1 (Rev. 3) and NED Procedure ISIEl-8 (Rev. 5),
" Unit #2 Steam Generator Examination Guidelines". Each data analyst was require o pass a site specific performance demonstration prior to analyzing the eddy current data from the current outage.
One hundred percent (100%) of the inservice tubes in Steam Generators 2RCS-SG21 A,-SG21B and -SG21C were examined to the maximum extent practical (full length) with bobbin coil probes.
l A 3 coil Zetec Plus Point probe'(consisting of the Plus point,0.115" & 0.080" coils) was used to examine 100%
of the hot leg top-ef-tubesheet region in each steam generator. A single coil Plus Point probe was used for low row U-bend examination. Crack-like indications identified in these areas were removed from service. Top-of-tubesheet circumferential indications were stabilized prior to removing the tube from service through plugging.
A Zetec 3-Coil Rotating Pancake Coil probe (consisting of a 0.115" diameter pancake coil, axial &
circumferential detection coils) was used on distoned tube support plate indications that could not be resolved through standard bobbin coil testing.
100% of dents & free-span dings 2 2.00 volts (164 locations), located between the top of the hot leg tubesheet and the third hot leg support plate, were examined with the 3 coil Plus Point probe. In addition,100% of the dents 2 5.00 volts (54 locations), located at tube support plate intersections, were also examined with the 3 coil Plus Point probe.
i Based m. tne results from the eddy current examinations, In-situ pressure testing was not required.
i E'ghteen (18) Westinghouse Plug-in-Plug (PIP) retainers were visually examined. No indications were observed.
The table below lists the number of tubes examined and r. umber of tubes removed from service for each generator:
2RCS-SG21A 2RCS-SG21B 2RUS-SG21C Number of tubes examined August 1998:
3292 3301 3288
..IP.bes, p,[ev,igugy,[em,9yed,f[gm,,s,efvice,pf,ig[,tp,,Ay, gust,1,9,9,8 :,,,,,,,,8{,,,,,,,,,,,,,,,,U,,,,,,,,,,,,,,,,,8,8,,,,,,,
Number of tubes rernoved from service August 1998:
Single Circumferential Indication @ Hot Leg Tubesheet 3
1 1
Single AxialIndication @ Hot Leg Tubesheet 0
1 0
PIT @ Hot Leg Tubesheet 1
0 0
Single Volumetric Indication @ Cold Leg Tubesheet 0
0 1
Single Volumetric Indication @ 8* Hot Leg TSP +11.0" 0
1 0
Free-span Pitting (Between 6* & 7* Hot Leg TSP) 0 3
0 s
.....S.ippe,Vp,lp,megi,c,1,ndicat, ion,@,,7,,H,qt, Leg,TS,P,,,,,,,,,,,,,,,,,,,,Q,,,,,,,,,,,,,,,,q,,,,,,,,,,,,,,,,,1,,,,,,,,
Number of tubes removed from service after August 1998:
88 81 91 i
r ENCLOSURE 1 mage 2 or a I
ATTACHMENTS BVPS Unit #2 - August 1998 Examination Steam Generator 2RCS-SG21 A Tubes With Indications j A - BVPS Unit #2 - August 1998 Examination Steam Generator 2RCS-Swl A Tubes Removed From Service -
BVPS Unit #2 - August 1998 Exam.ination Steam Generator 2RCS-SG21B Tubes With Indications A - BVPS Unit #2 - August 1998 Examination j
Steam Generator 2RCS-SG21B Tubes Removed From Service j -
BVPS Unit #2 - August 1998 Examinatica Steam Generator 2RCS-SG21C Tubes With Indications A - BVPS Unit #2 - August 1998 Examination Steam Generator 2RCS-SG21C Tubes Removed From Service ANALYSIS CODES RESULT OF 3 LETTER RESULT OF 3 LETTER ANALYSIS CODE ANALYSIS CODE Absolute Drift with Poscible MMiWDPj W
Pitting F'W4 Indication
'#UMnOAd ME@Mypl Distorted Support Plate jijpg@{jp5ig' Positive Identification (Rerun PID Signal with Indication W
dw' tube to establish verification)
Distorted Tubesheet Signst
@NDTI$j@
Positive Identification PIV with Indication
@NMsWM (Verify from data review)
Free Span Indication Single AxialIndication M SAI;M Manufact ng Burnish Single Cire. Indication Multiple Volumetric f" f.f' Single Volumetric Indication [pp Indications O G.;b WFQ.
Outside DiameterIndication w:ODP To Be Plugged E TSP A s
SHADED AREAS REQUIRE FURTHER ACTION (e.g. retest, repair, etc.)
)
. BEAVER VALLEY POWER STATION UNIT #2 STEAM GENERATOR EXAMINATION REPORT AUGUST 1998 EXAMINATION pY i
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ATTACHMENT 1A BVPS UNIT #2 AUGUST 1998 EXAMINATION STEAM GENERATOR 2RCS-SG21A TUBES REMOVED FROM SERVICE
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ATTACHMENT 2 BVPS UNIT #2 AUGUST 1998 EXAMINATION STEAM GENERATOR 2RCS-SG21B TUBES WITH INDICATIONS
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ppSS ppp YTINSSTTNNSSS I
I T BCCCCBBCCC S BPPPPBBPPP EORRRROORRR TBMMMMBBMMM STN 3
E PP 9 P
TTD_
BB B
M T
M O
OC L
3579 0062 A 4 8
4431 0545 8
7 C
1 1 1 1 1 1 1 1 GCHHHHCCCCC EEEEEEEEEEE LTTTTTTTTTT E LCCPPLLCPP B V33PPU03PP O0000000000 C
e R2222222222 1
c P 7777777777 22 i
n v
- Go r
t Si e
t i
a S TC HHCCCCC nSn NEHHSSEESSS UCim MET 22TTTTTTT Ra o THHHHHHHCCC y2 r
XE22SSEESSS x
f erE d ET TTTTTTT l
o at 8 e
l a9 v
Vr9 o
e1 rn m
eet e
s vGu R
a g
s emu e
BaA b
e u
t S
T 366554 2899 0 3 3.1 1 1 1 000 N000000 0000
- - + +++
O+++-
IT A
C HHCCCCC OHHHSSSSSSS L222TTTTTTT G
921 08 435 6
E 775 7
0027 00 D
1 1 1 1 1 N
1 1 1 31 1 1 H
44 4
C P PPPP PP S
2 T577 L 4 6 5.3 5.1 3.3 5 4 2
1 44 OO00 00 2
9 1 00 3
V W
T' DISVIDDICTTVVI I
I I I I D N DSPPSDDSSP I
I LO 2 6
4 6
4 8
C W
5 O6 8
2 R
-