IR 05000412/1981003
| ML20010H481 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 09/01/1981 |
| From: | Sanders W, Lester Tripp, Walton G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20010H476 | List: |
| References | |
| 50-412-81-03, 50-412-81-3, NUDOCS 8109240520 | |
| Download: ML20010H481 (9) | |
Text
.
,
-
.
U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT Region I Report No. 50-412/81-03 Docket No. 50-412 License No. CPPR-105 Priority
--
Category A
Licensee: Duquesne 'ight Company 435 SixtS Avenue pittsburgh, Pennsylvania 15219 Facility Name: Beaver Valley Power Station, Unii. 2 Inspection at: Babcock & Wilcox Company and Duquesne Light Company Mt. Vernon, Indiana and Shippingport, Pennsylvania Inspection concjucted: July 6-15. and 24, 1981 V
/
' 9.b
$?
Y//!/l
- Inspectors;fa. A.' Waft 6n, Reactor Inspector dats signed 4/WLY sed Ebs l8/
W. F. SaYd'ers, Reactor In spector dite signed L. Tripp, Section Chief date signed Approved by: / h dmpo f/
'L.
TrippflChief, Materials &
date signed Processes Section, EIS
- NRC Contract Personnel:
K. Ristan, Parameters Inc.
J. Patzer, Wisconsin Industrial Testing K. Grevenow, Wisconsin Industrial Testing Inspection Summary:
Inspection on Juiy 6-15, 1981 (Report No. 50-412/81-03)
Areas Inspected:
Special, announced inspection by two regional based inspectors, one regional based Section Chief, and three NRC contract personnel of the neutron shield tank using the NDE Mobile Lab to perform direct independent inspections. The inspection involved 228 hours0.00264 days <br />0.0633 hours <br />3.769841e-4 weeks <br />8.6754e-5 months <br /> at Mt. Vernon, Irdiana and 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> at the plant sita by the above individuals.
Results: No items of noncompliance were identified.
~
8109240520 010902'
P)R ADOCK 05000412
enn
-)
.
.
.
.
DETAILS 1.
Persons Contacted Duquesne Light Company
- R. Coupland, Director, Quality Control
- H.
N. Crcoks, Assistant Director, Quality Control
- W. H. Glidden, Senier QA Engineer
- J. H. Fetchen, Coastruction Engineer
- N. P. Merris, Director, Beaver Valley Unit 2
- W. F. Retner, Pro.icct Engineer
- A. F. Mosso, Quality Assurance Engineer
- J. Kowalski, Project Engineer
- G. W. Martin, NDE Level III
- R. Washabaugh, Manager, Quality Assurance
'
M. Smart, QC Inspector Stone and Webster (S&W)
.
- C. R. Bishop, Resident Manager
- H. Kraft, Engir.eer
- A. McIntyre, Lead Site Engineer
- R. J. Spahl, Engineer
- A. L. Van Sickle, Chief Engineer
- Denotes those present at the exit meeting on July 24, 1981.
The inspector conferred with Babcock & Wilcox Company and other licensee and contractor personnel during the course of the inspection.
2.
Independent Measurements Program A special, announced inspection was performed by the NRC using the NDE Mobile Lab.
The examinations were conducted on selected welds and base materials on the neutron shield tank at Babcock and Wilcox Company in Mt.
Vernon, Indiana. The examinations were performed tsing technicians from Parameters, Inc. and Wisconsin Indust -tal Testing.
The areas inspected and results are as fol?ows:
a.
Thickness Check (Attachment A)
Thickness examinations using ultrasonic techniques were performed on base materials:
Lower Shell Plate at Gusset 4-A, Dwg. 249588 Shell Plate at 4-C, Dwg. 249588 Outer Shell Plate at 3-A, Dwg. 249587 Outer Shell Plate at 5-C, Dwg. 249587
. _
.
.
-
.
~
As shown on Attachment A, all areas inspected exceeded the minimum wall thickness requirements of 1.5" as specified on the drawings.
b.
Lamination Scan (Attachment B)
An examination was performed using an ultrasonic technique of the base material adjacent to weld 1-22.
As shown on Attachment B, no recordable indications were detected.
c.
Magnetic Particle Examination (Attachment C)
An examination was performed using a magnetic particle yoke method on weld 2-15 A&B and 100 percent of gussets 204 and 205. As shown or. Attachment C, no unacceptable defects were detected.
d.
Radiographic Examination (Attachments O&E)
Radiographic examinations were performed of selected areas of welds 2-16 and 1-22.
The tests were performed using an Iridium 192 source and Kodak Type M film. The techniques used and evaluation of results were performed in accordance with NRC procedure NDE-5, Revision 0 including Addendum BV2-5-1.
The techniques and acceptance standards comply with ASME B&PV Code,Section VIII, 1971 including the Winter 1972 Addenda.
In addition, the acceptance standards are identical to the fabricatt.c's procedures.
The bases for using ASME Section VIII is as follows; The Beaver Valley, Unit 2 PSAR page 15.5-9 states, "The (neutron shield) tank is completely shop fabricated and is constructed in accordance with Section VIII of the ASME Boiler and Pressure Vessel Code.
However, a code stamp is not required".
To determine the acceptability of the subject welds, the evaluation of the weld quality was made in accordance with ASME Section VIII.
Based on this review, the following indications were found:
Weld 2-16, gas / blow holes, porosity and slag inclusions were found at stations 2, 3, and 4.
The above indications are acceptable to the appropriate radiographic acceptance standards.
(See attachment D).
.
Weld 1-22, gas / blow holes, porosity, and slag inclusions were found at the ten stations radiographed which exceed the acceptance
,
criteria in the above referenced code.
(See Attachment E)
'
As described in paragraph UW-12 of ASME Section VIII, acceptance of
.
a weld may be made without performing radiography when based on a decreased joint efficiency. A discussion with Stone and Webster and Duquesne Light Company at the exit interview determined that this
,
-
w
I~
.
.
-
.
weld was not radiographed during fabrication and acceptance was based on a magnetic particle examination.
However, no data was available to support that a decreased joint efficiency was used.
It was the S&W position that the PSAR statements are not intended to be a commitment to apply ASME Section VIII to all aspects of the neutron shield tank fabrication and inspection / examination. Their approach and rationale were discussed at the Beaver Valley 2 site on July 24, 1981. As understood by the inspector, they are as follows.
At the time the neutron shield tank was originally designed, an appliccSle code was not available. ASME Section VIII was used as a guide and a reference.
If this component was being designed today, ASME Section III, Article NF would be used.
S&W maintains that Article NF would require only visual inspection because the stresses in-service for the subject weld are low (approximately 1000 psi in the faulted condition) and Article NF treats this weld as being in a secondary member (not designed to sustain any significant stress where significant stress is aefined as being in excess of 50% of the allowable stress as permitted by the ASME Code).
S&W indicated that an approach similar to Article NF was taken for the neutron shield tank (i.e., volumetric examinations were required only for the welds with higher in-service stresses). The weld in question has been subjected to 100% magnetic particle re-inspection subsequent to the initial NDE by the original fabricator (Newport News Industrial Corporation) with no rejectable indications noted.
The licensee agreed that they would obtain a report from S&W and make a submittal to Region I for further NRC review describing how ASME Section VIII was applied in the neutron shield tank design, fabrication and inspection.
This item is unresolved pending the submittal of such a report describing in more detail the S&W position to include their rationale and engineering justification -
for not performing acceptance radiography on the subject weld as well as the disposition (including bases) for the above discussed indications (81-03-01).
3.
Unresolved Items Unresolved items are matters about which more information is required in order to ascertain whether they are acceptable items, items of-noncompliance or deviations. An unresolved item discussed during the inspection is detailed in Paragraph 2(d).
Exit Interview The inspectors mec with licensee's representatives (denoted in Paragraph 1) at the conclusion of the inspection on July 24, 1981.
The inspectors summarized the findings of the inspection and discussed the above unresolved item with licensee and S&W personnel. The licensee acknowledged the inspectors comments.
,
.
.
.
,-
,i
'.
"? Wacb n,en f b
-
THICKNESS GAUGE CALIBRATION RECORD 60-f/Z[?P o 3 fbe%dic VAh*] uesT A N x k.J Sir,co 7hwK
/W~
$( CJ floc ;
N0s //
Ae- O L'Rc
'
Mfr.
//eATtc-Model Jt/or-/2V O S/N MO ca.aww : mPs. Cha, s.1, Ma. :
.r.w.
c.ico 0,30 w
786 no mmoa; Ars. wwe Aca:
e-sra w
go.igt 1.
Rance
$M//9 Mode hv%
% (Ow>
d'/'MB$
kan smu. P&.rv Ar Gw.-r saa 4,
.
.
!aeadines
/,553
/, c.sv
/.Syv
/.EYG
/. SI'/
I
- .ctu=s L5&t
/.594
.
-
.
2.
Range
[Al#2.
Mode Mm sme-Ptsrc gr tVC /04 M spg).
,
?eadincs /.S)$
/,$2V
/,[8/
lSW l.f8/
'
etual
/ 677
/67'/
-
r 3.
Range
[$1 }l7.
Mode OurL dFiE4 6dat Corv 4 T' b4 (de 8W68h Readings l S8%
l.S89
/. 579
/.l00
/, S[fi Actun
/ 5'l e
/.f86 4.
Range f/////,
Mod,e
~Ogg connu Sue knr AT K-C (Own. 9MS8))
-
.
.
Readines
/.t?7
/.C 7 3
/, 69t,
/563
/.J6/
,
Act=a IS80
/ S'j8
'
'
5.
Range Mode
.
Readings Actual 6.
Range Mode Readincs Actual n n A.
dh.,l/
'k Verified by:
Certified by:
A
I I INK QAF-1, P,ev. 0
/
Date:
7/81
i
.
Peport No.
Y
.
.
,[
(If b1 ( */
Cal.ND.
- Tin?
,.
,
So -+tZhl-o3
'
/
.7eb Ho.
Date T/
'
'
!
le.u an, % of
%c utn e,, r" "
-t:s w<>a
>
.2. x REPORT Ol' VMUAL AND ULTRASONIC EXAMINATION abt":AVd. t/M.G-v uwT AA AT
. Ib t GJ Material f6 /CT S/N(s)
Descrip'tionggaams s,/,ao_li$e I
?
htJa d Gy9s-)E Cal. G Temp.
Abd.
M Loca tien 6Adccu( $ bl.Lecx Preparation A$ G+v,4k%D nu-
.a S
Eyaminer/ Level T
Examinc r/ Level Review / Level
I
@d' [kTid2-
G Authori:ed Inspector Custc=ce N
E Tester 1 #14dk T L a S/N n,N eo c-
S/N Q
.U Recorder 1 S/N
S/N I
P Transducer 1[EG.fTgth 8,% -5$7-
't
'
S.6. R $K Mb /1. 0 Stado30 38 E
.
N
- r T
Couplant Eyescu t/O Cable 8dc /dNc ( Marker gd Photo M4 P
Calibration Procedure Aing @ 6 aATica (Lu< AC (54w 4472dfARev.
82/ st2 OA/' /
R Examination Procedure ASw 6 6,,y4nu O/ttg M 8er jn,;ic,0. Rev.
/f2/ (8 dv. /
-::-d-Procedure A/0 e //2w,o 7,/,r/
pc Rev.
O C
Calib. Blk. /,f" /~6/cjTemp. Ap16 Ref. 41 f/3 Amp.
8dM 59. O 'O # '.
Ref. Gain N Ob Da=p
/hio Reject A//A
- Ca te 4llA Alarmff[]. Mag. Tape Count g/4
_ Chart A//4
' Cal. Check Time M /fbc I
Cal. Ref.31k.[.8"N/E5f. Ril'. k' Oa /I4 Amp. /[O7o Sweep Position [--/o evC,
Scan Gain -f,7(. Od Ref. Dwg. f N % _ Reject Levelow1 70%
Report Level d'OYo
75.wsria 02)
w. u.
E NAD = No apparent disc.*.
L = Linear G = Gocmetry S = Spot M = Multiples X
Scan Type Disp.
Scan Type Disp.
Scan Type Disp.
.
A
i PT l
ll l
l l
l l
.
"
l l
Visual l
ll 7 l l
l 13 l l
I
l ease Metal I ll 8 l l
l 14 l l
l l
ll 9 I l
l 15 l
I l
l 10 l l
l 16 i
"
I I
I 11 1 l
i 17 I i
x
l l
ll 12 l l
ll 18 i
'l T
Scaa cuo,.co os /o ' or scan n..sc-i= tion or indicacicos I
.
Cc,>vauas PLes gojw To Ato fep.
WissncsJ No sa %Ak.h W:0 kl TIk
'N[ OI
Tgc~
hnec.JTiddsTiC5 -
JHyg7)cdi N C h
.
c,
'/
{
p.Tc-i/)
.
EXF-7, Rev. O Date:
7/81
,
.
-
-.
.
-
__
'
-
m+a r.... o
-
MAGNETIC PARTICLE EXAMINATION RECORD
-
.
m SITE:
.
UNIT:
DATE: [ DAY-MO-YR)
sight
"
'A E
fY)_T d6R;004 $b b.Y.
9 - ) - S-l SHEET ENDED:
N EXAl!IllATION AREA: NN TROM ' LINE/SUBASSEFIBLY IDENTIFICATION:
Lo LOCATION:
Wo LOCATION:
'
(SYSTE!!/C01IP0tlENT) Sill 6LD
/fN 2_-/6 //48 Silt LEVEL PROCEDURE SURFACE FIllISil:
WELD TYPE (--FLOW +)
mar;!!ET T Z ATTO!!
EXAMItlER:
YOKE SPACI!!G: (.o Ill.
y Z
g EXAMIllER:
StlT LEVEL g.O MATERIAL S
A1
.
-
ADD.Bil2 -b-I
//d' fLM b BRAND-O SURFACE TE!!P.
F CALIllRATION BLOCK
- CALIBRATIO!! VERIFICATI0!1 BATCil110 :
SER7AL 110.:
'
TI!!E:
9 '00.818 IW T30Pr
[g[3t,"
g g
M-M-
M.
UEIGHT: [Ol f35.
IrlITI ALS:
-
Il$n
!k iE!khil I:lD !!O.
L U
LOCATI0ll REllARKS:
I!!I f GVS$cYS AOt/.4.2 W lIl%
PARTICLG IN.specrSh 8 ort; IrOS b6 ' ouT* O D ADoud GUSSETS No TDDICAT10A 7tfAT tJeR6 ouT oF cob 6
_
t.ot2 R#
Fovsh.
d.
m.r.T-
?
.
.
E EXAMI!1ATION ADEA LIMITATION:
[IF NONE SO STATE]
g h.
~ REVIEWED BY SNT LEVEL DATE:
PAGE OF
~
'~
.
i
,
.
. - - - -
gs r~z
'
g' _UQO2G_Z _ZQc
%-)
2Qv Z
$o3> z5
)
)
o
.
>!z d5z 2$
-
E yf[
! g u b_ $ ;
f; E
E-h
- g
p,M~
iO
{ l; *
fs O g*
m
?s]5
?
byy
,sf
J ~ z9 9 O
Z nD, n c.
Z@gcr y[g.
i
,
t7t n
y
m %*
} og*
- ie Av$a
-
a pT,.c
~ y{f r
r i
j
$ay" y8' z 2q 5{.
$ Ih f>
ea rS= k S$
-
.
%
'
"
..{k N j-
ccNhi m
,c6 m g m-2%
sg.v x<
gpT.y m 3-7 OO C~
c
.
-
gNg 5:rO m5
-
&{
xgg gk ymS _
-
i
pg VN a pO s
O
& %c,%yt g>
'
-
w{
gg fh3 ?
h ea* p # R-un9?
3bJ
'
3y3r c\\
mg wg#
g
,
"
t
'
-
e e n g
EEo z
] g'
w n
n t
o ni s s
s t
lo a
ty o
o le tait tu 4_ es t
ec s
r
%yy u a c
s s
e s
i i
p n qr r
g st ct c
Bs T
k s
s s
n u
t e
no fa c c
p r o et e
r r e
nfe ce u
e e
/e c
o gl oi d
sl t
a r
s n
d i
of u
e n
uh rfue l
e e
xEi=
mpx c
l c
e ao o
r o
lac c
c a
r r
F In 6m5.
A R
GH H
C P
Si In n
n P
[-
C i'
e u
I' u
\\f (
.
1 c.
\\
Cj
\\
'
i D
Lgu Eg
-
\\
sh#
9s che,d
-
0O
)
.
ho Om 5s1%
3b Ng
- l ll Z u
.
6r
ozF i
,o EozN,m5
-
o 25 ($o
%
Ipoj
_
f H
?g
-
l vgg tl
-
czH
\\
cz g\\
t t
3PE
,
,g.g 8 _..Ig 5l mgo9
>e.
i2R!mo 3,
8]=
,(
i
{p kc bh1g sn? 2 h3eir 33e 3t
- -
i
,* g
,go$,
- Sk2e
- ! 5 d-9 * 5g,[
m;i 3r,gdi; fgahgh 2S!g 3QP,.7 Ekh.
7h k A'Lp
' 1.h-
.[
!j k!1l
,
'
y* Qs 1l
!gf 3!!1a 3* 9kg. l;:
f i*hi,
? 5} g g si!
.: ;.5l.=
s3?I il5ia mjEE oe*
gag~h
$I : %7,3 31= I.%I
i g< ! ;
g jsi
- I 9.d 8 ! = k, g=!j 5fJ8 g !El e3mS{
g ga ha ths s t et E
[gh g it gs! g* $n2 3Si;s!.?!
ggEj }9
- g
[jjy E}s mjEE ae*
- 3 1 yg& f.2 5 5% Bha 5!3 mbc * :
s $
[ *g~It w
4n s 6>,k h s-z,Z C C N %f y Zg 2A\\.
?9O0sT5o
l m5g.! 62' 2yo2's
-
_ $$ gso" bm$M(3 y Tfs Ftob \\O
.{
jm k i,,
3}
m$ '
oE3k e' zw f
r z9 2 z9* Ee
2m(
>~ $
2g C'Z s m G 9% A
,
e m9 3ggS*
sE2 T8 a
3n em H ("j 7
" aNaQ02 f-
m
~
zo Tg,
g E" 5e3* '
!
g 7~ J Z Tb U
A Ne.,'i-
$' kk%
I TQ-
>5 7h[
\\ N0
'%~O x<
s@h gmmm2 oTmr! g"
-
ldE e
e$*
0@$
tO DN C%O d
>. *
c>
-
8b
)
-
.'
r.i m ~'lc 'V *
o
Tga Bg*
i
. g *'
r
.E
-
C Q$
e e n g
i = o'
o s
s t
tai t
n s
n n
lpe r
u h
i e
s i
o o
u ta c
g
$
s s s a
y b t. i
'*
t st t
i m"et qr
'tc c
ec j
I r
T k
s s
s u
t e
e
c no e
ce e
c o
u o'
d n d
't lmf ot
,;-
j Ee t
a r
c c*
a r r
'
.=
e i e e
e n
uh i,E =
e o
r o
f" n in" IP U
BT r
n smh
^
R H
C P
O 4nP
\\
2P 3-o o
2p
"0 NN A i1
\\
Wn no. e eO t
q,C
\\
(
2n g
zwO 4i
\\
2p g,pm P-r, k a p 4O z m P-
.
M hmn8 FmP x
2w
?oP 4t. O 3,
e2P 1O z pP-
=t
\\
m n'
u s r'p.
fO-
-
-
DR62 n usAEhp(. %zol
-
9sE q4m y yO
$@
. $vRs'ge.
w'
hK
-
"
{!'
-
'_
.
m[p;;Ry%
C ZF$
)
0N Eeae$' hr0 Y
,m5
!l
-
i f
f xsN b
ll
\\}
cz i
\\
\\
t g
!
?E
,
IW9$,
%15&s1E 51leSo ik saOhi.
25 j jg5!i2s:5e jt j.
g.
(*,
- iSa!l 9 Ps Yn
3< u$v>
i
.
fk a 93f a *EYi4 e
gf 1{le326BI23l1 b
> I N S. -
!
h; h p1 ga s* !'a a
'
-
3 s I j,$Bl eAI_ g$R WBa$,
EI
,
kkga5iiY o
k; i
! I gn'e
!(
$2
",a it
3y j 135 3g l jt 7
!
gu2 $ pa
[:eh3i3iiR
!$
8i,hioEf gg2
$7fP 8;,o!j3 ; h i R m B aE, EI
" +.
.y
!f
- m3k$r R
I q j y1,eI{ ?j aN3
,.ji g
.5!
hh Bo5 mi
t
'
-
n l
k