ML19257D278
| ML19257D278 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 11/29/1979 |
| From: | Economos N, Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19257D276 | List: |
| References | |
| 50-338-79-43, IEB-79-17, NUDOCS 8002040016 | |
| Download: ML19257D278 (7) | |
See also: IR 05000338/1979043
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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101 MARIETTA ST., N.W., SulTE 3100
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AT* \\NTA, GEORGIA 30303
DEC -41979
Report No. 50-338/79-43
Licensee: Virginia Electric and Power Company
Richmond, Virginia
23261
Facility Name: North Anna 1
Docket No. 50-338
License No. NPF-4
Inspection at Noryt. Anna Site near Mineral, Virginia
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Approved by:
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A. R. Herdt, Section Chief, RC&ES Branch
Da'te Signed
SUMMARY
Inspection on October 30 - November 1, 1979
Areas Inspected
This routine, unannounced inspection involved 24 inspector-hours onsite in the
areas of inservice inspection activity and IE Bulletin 79-17.
Results
Of the two areas inspected, no items of noncompliance or deviations were
identified.
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DETAILS
1.
Persons Contacted
Licensee Employees
- W. R. Cartwright, Station Manager
- J. W. Martin, Supervisor, Quality Arsurance
- E. W. Harrell, Superintendent of Maintenance
- H. L. Travis, Mechanical Foreman - NDT
- C. B. Swope, Senior QC Inspector
- W. R. Madison, NRC Coordinator
Other licensee employees contacted included technicians, security force
members, and office personnel.
Other Organizations
Westinghouse (W) - NSD
E. Conrad, Site Coordinator
Nuclear Energy Services, Inc. (Conam Division)
M. Dobson, Level II Examiner
R. Lofgren, Level II EC-Interpreter
NRC Resident Inspector
M. Kidd
- Attended exit interview
2.
Exit Interview
The inspection scope and findings were summarized on November 1, 1979 with
those persons indicated in Paragraph 1 above. The inspector identified the
areas inspected which included procedure review work observation and record
review relative to ISI activities under way in Unit 1.
3.
Licensee Action on Previous Inspection Findings
Not inspected.
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4.
Unresolved Items
Unresolved items are matters about which more information is required to
determine whether they are acceptable or may involve noncompliance or
deviations. New urresolved items identified during this inspection are
discussed in paragrpah 7.
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5.
Inservice I.,spection - Review of Procedures
a.
Procedure Technical Content
Procedures governing the inservice inspection (ISI) of components
listed in ASME Section XI, IWB-2000/IWC-2000 were prepared by W and
approved by VEPC0 for use during this ISI interval. A review of
selected procedures was performed on a previous inspection documented
in IE RII: report 50-338/79-40. This procedure review was a followup
effort, performed to conclude work in this area.
The inspector reviewed
magnetic particle inspection procedure ISI-70 Rev. O in order to
ascertain whether it was consistent with applicable code requirements.
The code governing ISI procedures and activities is ASME Section XI
(74S75). The aforementioned procedure was revicwed in the areas of
surface preparation and temperature at the time of testing, type and
color of particles used, extent of exe ination and direction, prod
spacing, magnetizing current levels a 2 ut asity, lif ting power and
pole spacing requirements when the Joke method is employed and accep-
tance criteria.
VEPCO's eddy current procedure NDT 14.1 Rev. 7.3 has been written to
comply with RG 1.83 (RG) and has been approved for the examination of
Steam Generator (S/G) tubes. This procedure was reviewed in order to
ascertain whether it specified the equipment to be used, test parameter,
examination method, calibration, acceptance criteria.
Within this
area the inspector noted that the procedure did not specifically
address / require re-test of tubes examimed during an interval wherein
calibratioa had drifted. This matter was discussed with the licensee
representatives who agreed to address this area in the forthcoming
procedure revision. This matter was identified as inspector followup
item 338/79-43-01, "Calitration Drift-tube Reexamination".
b.
Procedure Scope
The inspector selected four (4) areas subject to examination during
this outage as specified in IWB-2500 and IWC-2500. The selected areas
were as follow:
AREAS
CATEGORY
ITEM
Closure llead Weld
B-C
1.3
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Reactor Vessel Outlet
Nozzle
B-F
2.1
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IWB-2500 (Continued)
AREAS
CATEGORY
ITEM
Pressurizer
Long. and
Circumferential
B-B
2.1
Pressurizer Support
Skirt
B-F
2.8
Circumf. Welds
C-A
1.1
Nozzle Welds
C-L
1.2
Integrally Welded
Supports
C-E-1
2.5
Piping
C-F
2.1
For the above items the Inspectior Program Plan was reviewed to ascer-
tain whether the specified category, method of examination and extent
were delineated and consistent with applicable code requirements.
Within the areas examined, no items of noncompliance or deviations were
identified.
6.
Eddy Current Examination of Steam Generator (S/G) Tubes
Eddy current (EC) examination of the tubes in S/G "C" was underway at the
time of this inspection. The examination is being performed with procedure
NDT-14.1 Rev 7.3 discussed earlier in this report.
Selection of steam
generator and tube sample per steam generator is controlled by Technical
Specifications (TS) paragraphs 4.4.5.1 and .2.
Discussions with the licensee's representative disclosed the finding of two
" leakers", located in row I columns 51 and 60 in steam generator "C".
The
rupture / defect was believed te be located in the U bend region of both
tubes.
In addition the licensee representative stated that the EC examina-
tion showed extensive tube denting existed in cost of the tubes examined in
S/G "C".
This condition was demonstrated by reviewing examination of
randomly selected tubes recorded on magnetic tape. These tubes were identi-
fied as follows: RIC1, R3C1, R6C1, R7C1, R46C41. Discussions with operators
and those involved with the examination disclosed that because of the
denting a 0.650" diameter probe had been substituted for the 0.700 diameter
probe normally used. Examination of tubes in S/G "A" was scheduled to
start later in the month. The licensee representative stated that SG "B"
would probably be examined during this outage.
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The inspector uitnessed the EC examination of SG "C" tubes R43C32, R44C33,
R42C33, R3C33, RIC33 and R42C34, revieweo: examination results, equipment
and personnel certifications; system calibration and calibration standard
quality records.
Within the areas inspected no items of noncompliance or deviations were
identified.
7.
Inservice Inspection - Data Review and Evaluation
Selected NDE records generated during this ISI period were reviewed in
order to ascertain whether the reported extent of on going examinations
rela.tive to class 1 and 2 components were consistent with T. S. commitments
and met minimum percentage examination requirements as specified in the
applicable code.
Records from several areas examined during this outage were reviewed to
ascertain whether they contained reference to examination results and data
sheets; examination equipment data, calibration data sheets; evaluation of
data, extent of exaraination, deviations from programatic requirements,
disposition of findings and identification of NDE material. Records selected
for the above work effort were as follows:
,
CLASS 1
Area
Weld #
Sketch #
Branch Connection and
1,4,5,7,8,9
VRA-1-4100
Long/Circumfer. Welds
VRA-1-4102
Integr. Welded
WS-1, WS-2
VRA-1-4102
Supports
Dissimilar Welds
16, 17, 21
VRA-1-4101
CLASS 2
Area
Weld #
Sketch #
Circumf. Butt Welds
1,4,7,10
VRA-2-2540
In addition records from pressure retaining pipe welds in various Class 1
and 2 systems were reviewed to ascertain whether unacceptable deviatione
existed between initial and final system calibrations; documentation of
examination data and recordable indications was complete and accurate; data
evaluation was performed by qualified personnel and that it was consistent
with code / procedure requirements and, whether incomplete examinations and
results were ' repeated to permit full evaluation as applicable.
Within these areas tile inspector noted that in cases where full examination
of a weld was not possible because of configuration inaccessibliity, welded
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attachments etc.
the record described the examination only as " partial"
without quantifying the extent of the limitation.
The inspector stated
that limited examinations needed to be more fully delined in order to
provide an accurate record of examinations performed on these welds. The
licensee representative agreed to look into this matter and the inspector
stated that it would be identified as unresolved item number 338/79-43-02
" Description of partial examination of welds".
Within the areas examined, no items of noncompliance or deviations were
noted.
8.
Inservice Inspection - Observation of Work and Work Activities
The licensee ISI program plan for this outage, (I-II,1979), was reviewed to
ascertain whether nondestructive examinations met T. S. and ASME Section XI
(74,S75) requirements relative te number of items to be inspected; methods
and extent of examination.
In addition the inspector witnessed the following:
1.
Volumetric examination (UT) of weld 12DM, sketch VRA-1-4301,
Pressurizer Surge Line.
2.
Surface examination of weld 12DM, sketch and line same as above.
3.
Eddy current of S/G "B" tubes listed below:
R0W
COLUMN
43
32
44
33
42
33
03
33
01
33
42
34
The above examinations were performed in accordance with applicable code
and/or R.G. requirements and the approved NDE procedures as applicable.
Within the area inspected no items of noncompliance or deviations were
identified.
9.
IE Bulletins (IEB)
IEB 79-17, Pipe Cracks in Stagnant Borated Water Systems at PWR Plants
(Unit 1).
The inspector discussed the Bulletin with responsible licensee personnel.
The licensee has identified the affected systems, responded to Part 1 of
the Bulletin, and is in the process of establishing a sampling plan for the
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inspections required by Part 2 of the Bulletin.
'EPC0 has requested an
extension for the time allowed to perform the inspections required by Part
2 of the Bulletin.
Within the areas inspected, no items of noncompliance or deviation were
identified.
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