IR 05000352/1982006
| ML20053C934 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 05/10/1982 |
| From: | Durr J, Ebneter S, Mcbrearty R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20053C933 | List: |
| References | |
| 50-352-82-06, 50-352-82-6, NUDOCS 8206030185 | |
| Download: ML20053C934 (9) | |
Text
.
.
U. S. NUCLEAR REGULATORY COMMISSION Region I Report No. 50-352/82-06
Docket No. 50-352 Priority Category A
--
Licensee:
Philcdelphia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101 Facility Name:
Limerick Gene' rating Station, Unit 1 Inspection At:
Limerick. Pennsylvania Inspection Conducted:
March 15, 1982 - April 23, 1982 Inspectors:
A 8 8 M/'/ M 5-t o - t' 2-R. A. McBrearty, Reactpv Inspector date signed t.C T*//c/# L J. P. Curr, Sr. Resident Inspector da'te'si gned Approved By:
.(/
ab f//o/91 S. D. Ebneter, Chief, Engineering Programs dafe signed Branch
,
Inspection Summary:
Inspection on March 15 - April 23, 1982 (Report No. 50-352/82-06)
Areas Inspected:
Routine, announced inspection of piping welds and base materials by direct inspection using the Region I Mobile NDE Laboratory. The inspection included NDE of selected welds and base materials; review of licensee contractor NDE procedures, vendor material certification records, fabrication records and NDE records The direct inspection effort was performed using NRC c'ntractor peronnel.
The inspection involved 345.5 o
inspection hours onsite by one regional based inspector, the resident inspector and two NRC contractc. personnel.
Results:
No violations were identified.
C206030195 820512 PDR ADOCK 05000352 G
_
,
.
.
DETAILS 1.
Persons Contacted Philadelphia Electric Company
- D. T. Clohecy, QAE
- F. J. Coyle, QAE
- E. C. Gibson, QAE
,
- G.
Lauderback, QAE
- M. J. McGill, QAE
- P. K. Pavlides, QA Manager
- R. Scott, Lead Construction Engineer
- R. H. Zong, Senior Metallurgist, Level III Bechtel Power Corporation
- T. Altum, APFE
- M. J. Baron, Lead Field Welding Engineer
"R. J. Bulchis, Resident Engine;r
- T. M. Gwin, Project Construct on Manager
- K. Handy, Resident Engineer
- F. Higgins, Instruction Engineer
- J. Honer, Senior Lead S/C Engineer
- D. Hunt, S/C Engineer
- M. Jan, APFE
- R. Lamley, LTM Engineer
- J. L. Martin, QAE
- K. L. Quinter, APFQCE el
- D.
C. Thompson, APFQCE
- A. G. Weedman, PFE U. S. Nuclear Regulatory Commission
.
- J. P. Dur., Senior Resident Inspector
- denotes those present at the exit interview on April 9. 1982.
2.
Independent Measurements - NRC Nondestructive Examination and Quality Record Review of Safety Related Piping Systems This independent verification inspection was conducted March 15, 1982 through April 23, 1982 using the Region I Mobile NDE Laboratory. The inspection was conducted by the NRC Senior Resident Inspector and one Region I Reactor Inspector. The NDE was performed by two technicians from Wisconsin Industrial Testing under the supervision of the NRC inspectors.
The purpose of the examinations was to verify the adequacy of the licensee's quality control program through NRC independent testing. This was accomplished by the NRC performing the same tests required of the licensee and evaluating the results.
In addition to these tests, the NRC program performed field
_ _ _
__ _
.
.
chemical and physical analyses, pipe wall thickness measurements, and licensee /NRC radiographic film comparisons.
The inspection sample selection was made by the NRC inspectors and was intended to provide a representative sample of piping systems, components, pipe sizes, materials, shop and field welds and ASME Class 1, 2 and 3 welds. The selected items were previously accepted by the licensee based on vendor shop or onsite NDE records by licensee contractors.
The ex:.minations were performed using NRC detailed procedures and addenda specif cally written for compliance with the licensee's PSAR commitments to the ASME Boiler and Pressure Vessel Code, 1974 Edition through Summer 1974 Addenda. The intent was to duplicate, tc the extent practicable, the techniques and methots of the original acceptance examinations.
a.
Nondestructive Examination Procedures The inspector audited the below listed nondestructive examination procedures to ascertain compliance with ASME B&PV Code,Section III, Summer 1974 Addenda.
(1)
RT-XG-2, Radiographic Examination, Revision dated 7/1/74 (2)
PT-SR-1, 2, Liquid Penetrant Examination (Solvent Removable Method), Revision dated 8/21/74 (3)
MT-P-1, 2, Magnetic Particle Examination (Prod Method), Revision dated 8/26/74
'!
(4)
MT-Y-1, 2, Magnetic Particle Examination (Yoke Method), Revision dated 10/30/74 No violations were identified.
b.
Material Traceability Twenty-six documentation packages were reviewed for the following:
Material certification records including weld wire.
-
-
NDE results.
-
Fabrication records - shop and field.
-
Drawings.
-
Chemistry.
-
Physical properties.
<
-,
.
.
All the requested documentation was readily retrievable and was found to be complete.
The recorded physical properties were compared with the minimum required values found in the applicable material specification. All results exceeded the specified minimum values.
c.
Nondestructive Examination The following examinations were performed:
Radiography - Nineteen welds were radiographed using an Iridium
.
192 source.
These included ASME Class 1, 2 and 3 welds fabricated from stainless steel and from carbon steel.
The technique and evaluation of results was performed in accordance with NRC Procedure NDE-5, revision 0, and procedure ?.ddendum LIM-1-5-1.
Findings: The following welds contained discontinuities which required evaluation:
EBB-129-1-6 SW 2
.
DBA-106-1-1 SW 2
.
DLA-107-1-2 SW 1
.
GBB-115-1-1A SW 1
.
DLA-112-2 FW 6
.
Welds EBB-129-1-6 SW 2, DBA-106-1-1 SW 2 and DLA-107-1-2 SW 2 contained porosity which was found to be acceptable per the ASME Code.
Weld GBB-115-1-1A SW I contained an inclusion which was evaluated
~
'l by two licensee level III individuals, two level II's and the ANI. The NRC inspectors agreed with the interpretation as an inclusion less than 1/4 inch long and acceptable. Weld DLA-112-2 FW 6 revealed discontinuities evaluated by NRC inspectors as transverse weld cracks. The cracks were identified on NCR 5014 by the licensee prior to the NRC examination.
This weld was randomly selected by the NRC for examination prior to licer.see acceptance and is scheduled for repair by the licensee.
Complete coverage was not achieved of weld GBB-101-2 FW 1 due to thickness transition.
The available areas were found acceptable.
The remaining welds were found acceptable.
Magnetic Particle - Two welds were examined using a magnetic
.
yoke and the dry powder method.
The technique and evaluation of results was performed in accordance with NRC Procedure NDE-6, revision 0, and procedure addendum LIM-1-6-1.
The sample included one ASME Class 1 weld and one ASME Class 2 wel.
.
.
Findings: All areas were found acceptable and correlation with original test results was good.
Liquid Penetrant Ten welds were examined using the color
.
contrast, visible dye, solvent removable penetrant method. The technique and evaluation of results was performed in accordance.
with NRC Procedure NDE-9, revision 0, and procedure addendum LIM-1-9-1.
The sample included ASME Class 1'and 3 welds.
Findings - All areas were found acceptable and correlation with original test results was good.
Thickness Measurements - Twenty-five areas were measured,
.
including welds and base materials, using an ultrasonic digite.1 readout thickness gage.
The measurements were made in accordance with NRC Procedure NDE-11, revision 0.
The minimum wall thickness was determined by using the pipe wall thickness specified in the piping design tables minus the 12.5 percent mill tolerance.
Findings - All areas equalled or exceeded the minimum thickness requirements.
Ferrite Measurements - Four stainless steel welis were measured
.
using a Type II Ferrite Indicator (Severn Gauge).
Findings - All measuraments were found to be acceptable.
Hardness Checks - Twenty-five areas (base materials adjacent to
.
. welds) were checked using an Equo-Tip hardness tester in accordance
-
- ,
-
with NRC Procedure NDE-12, revision 0.
Hardness numbers were converted to Brinnel hardness and approximate ultimate tensile strength by the use of conversion tables.
Findings - No unacceptacle readings were found.
b' eld Reinforcement Measurements - Twenty-five welds were examined
.
for reinforcement.
Findings - All excmined weld reinforcements were found to be acceptable.
Alloy Analysis - Seven areas of stainless steel base material
.
were examined for material composition using a Texas Nuclear
_
Alloy Analyzer. The examination included material identification and chemical analysis.
The results were compared with vendor material certification records.
Findings - All tests confirmed the vendor material certification records.
.~.
_..
- - _. -
. - -. _. _. -.
.
_ _. _
-.
_
.
_ _.
.
..
.
,
.i -
...
.
s l
.
The welos randomly selected for independent verification and the NDE
'
performed are listed in Attachment 1.
3.
Exit Interview
.,
'
l The inspectors met with licensee representatives (denoted in Paragraph _1).
on April 9, 1982. The inspectors summarized the scope and findings of_
the inspection.
.
1'
.
.
.I
o i
1-
"
s, i
<
i
!
i I
.
,
1
i
,.. ~-
r + - -
r
--
-r we -
--+---,-,---,.+--,--mr.w..-
+.-----.,+-+------*e---r
,, - - - - --- - -, -,.
.+
~s----
--
'
'lDENTIFICATION EXAMINATION Page 1 of 3 Spool / System Weld No, hRadiography hSh pek$[Ng Thickness l Ferrite
{ Hardness kein emenbA
,y e-t
'
Acceptable Acceptable DLA-107-1-2 FW-6
'
Acceptable
-
Acceptable Acceptable
-
-
I
,
j ASME j
Acceptable Acceptable Acceptable Class 1 SW-1 iAcceptable Acceptable
-
-
-
12" j
GBC-101-3-4
.FW-3 l
-
-
Acceptable Acceptable Acceptable Acceptable
-
-
ASME j
-
Acceptable Acceptable Acceptable i cceptable
-
A Class 3 SW-3
-
-
12" l
l Acceptable Acceptable Acceptable Acceptable DB A-106-1 -1 FW-2 Acceptable
-
-
--
HPCI ASME Acceptable Acceptable
-
Acceptable Acceptable Class 1 SW-2 Acceptable
-
-
10" Acceptable Acceptable
-
-
-
Acceptable
-
EBB-129-1-6 FW-6
-
HPCT
,
-
-
Acceptable
-
Acceptable Acceptable
-
Class 2 SW-2 Acceptable 14" Acceptable Acceptable Acceptable
-
EBB-121-3-2 FW-5 Acceptable
-
-
-
RHR ASME Acceptable Acceptable
-
-
Acceptable
-
Class 2 SW-1 Acceptable
-
.-
10"
)
Acceptable
-
Acceptable Acceptable
-
GBB-115-1-1 A SW-1
, Acceptable
-
-
Core Spray Cooling l
-
Acceptable Acceptable
-
' Class 2 SW-2 Acc'eptable
-
-
Acceptable I
-
!
10" l
I
'
Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable DCA-104-1-1 FW-ll
' Acceptable
-
r l
.
ASME Class 1 SW-1
-
-
Acceptable, Acceptable Acceptable Acceptable Acceptable Acceptable
.
12"
,
S&tschmont 1
j
-
-
.
.
g ZDENTfFICAT10N EXAMINATION Page 2 of 3
,
Spool / System Weld No.
Radiography hat PebNkNt Thickness Ferrite Hardness kein r!ementA lher DCA S-1-3
$
q FW-6
-
-
Acceptable Acceptable Acceptable Acceptable Acceptable Acceptao; ASME e
SW-2 Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptaol
-
DLA-2-2 FW-6 Acceptable
-
Acceptable Acceptable Acceptable Acceptable
-
-
,
Class 1
'
12"
__
_
HBC-183-1 FW-8 Acceptable Acceptable Acceptable Acceptable
-
-
-
-
,
Class 3 SW-1 Acceptable
-
-
Acceptable Acceptable Acceptable
-
-
20" GBB- 01-2-1 FW-1 Acceptable Acceptable Acceptable Acceptable
-
-
-
-
ASME l
C1
SW-1 Acceptable
-
-
Acceptable Acceptable Acceptable
-
-
'
H88-110-1-2 SW-2 Acceptable Acceptable Acceptable Acceptable
-
-
-
-
_
_
_
_
_
_
_
_
_
_
16" GBB-118-3-9 SW-5 Acceptable Acceptable Acceptable Acc'eptable
-
-
-
-
_
_
_
_
_
_
_
_
-
4"
,
.
HBB-127-1 FW-54 Acceptable Acceptable
-
Acceptable Acceptable
-
-
-
Containment i
AtmospgcControl
-
-
-
-
-
-
-
-
-
Class 2 -- 4"
.
-
- - - -
.
-
l i
i
-
r b
b
e a
a a
yz t
t t
oy p
p p
-
-
e e
e ll a
~
c c
c l
An c
c c
A A
A A
'
it n e
e l
.
m b
e a
dc t
i r
p
-
-
-
-
eo e
f Wf c
o n
c i
A
e
I2 e
.
g e
a s
l s
b P
e a
n t
d p
-
-
-
-
r e
a c
H c
A
.
e t
.ir
-
-
-
-
-
re F
e l
s b
s a
N e
t O
n p
-
-
-
-
I k
e T
c c
A i
c N
h A
I T
M AX E
t dn
. ' a
-
N
.
-
-
-
-
ie Ln e P
ce il tc ei nt
-
-
-
-
-
gr aa MP y
h e
p l
_
a b
r a
g t
o p
-
-
-
-
e i
d c
a c
_
R A
T
!
_
_
.
.
g g
o
-
n n
N
6 i
i
,
-
-
-
p p
d W
W i
i le S
F P
P W
l N
o O
r I
t T
n2 A
o
)
C Cs
e I
m t
s
-
)
g F
e 2 nca
1
.n
. r t
.I
- eil
-
co e a T
s 7 mrCn 8RE s l
ri 8 rh N
y H M s "2 A it A i c
"
2 ne
1 E
S 1ih -
3RS a1
- cc
- c s d
/
- ap
-
Al N eu N ei I
l BtsE A
C
- RS
- R D
.
o B nom C
S (
D (
o H oms O
R R
p CtA
-
'
S i
A
,
-
,llllll ll, l