IR 05000306/1990015
| ML20058E790 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/02/1990 |
| From: | Danielson D, Ward K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20058E788 | List: |
| References | |
| 50-306-90-15, NUDOCS 9011070329 | |
| Download: ML20058E790 (4) | |
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NUCLEAR REGULATORY COMMISSION
REGION III
Report;No. 50-306/90015(DRS)
Docket No. 50-306 License No. DPR-60 Licensee:
Northern States Power Company 414 Nicollet Mall Minneapolis, MN 55401
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Facility Name:
Prairie Island Nuclear Generating Station Unit 2 c
. Inspection At:
Prairie Island Site, Red Wing,'MN-55089
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Inspection Conducted:
September 4-5, 17-19, and October 29, 1990
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Inspector:-
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{-D.W5rd.
Dato Approved By:
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i. H. Danielso'n,_ Chief Date
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aterials and Processes Section
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Insoection Summarv-Insoection on=Sectember 4-5.
17-19. and October 29.-1990~(Recort
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No. 50-306/90015(DRS))
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Areas'Insoected =' Routine, unannounced'~sa'fetr inspection of
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inservice inspections (ISI) activities' including review ~of-
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programs : (73051), procedures (73052), observations of work
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activities _(73753). and data review (73755)..
.i Results:- No' violations'or deviations were identified.
Based on
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the.results of-the inspection, the NRC inspector noted the following:.
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'The implementation of the.ISI' complied'with the requirements-
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'ofl ASME Section XI and -thel licensee's program.-
~ o The; staff of.both-the licensee and ISI contractor-groups-
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Lwere knowledgeable and competent.
O LIn general,;the inspectie results indicate: continuing good performance.
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9011070329 901102
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PDR ADOCK 03000306 o
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DETAILS
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Persons Contacted Northern States Power Comoany (NSP)
- D.-Mendele, General Superintendent
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Dahlman, Senior Materials and Special Processes Specialist
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Ganser, QA Specialist U.
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Nuclear Reculatory Commission (NRC)
- P.
Hartmann, Senior Resident Inspector D.
Kosloff, Resident Inspector-Lambert. MacGill. Thomas. Inc. (LMT)
D. MacGill, Level III1(Vice President)
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Conam Nuclear. Inc. (Conam)
B. Marlow-Hartford Steam Boiler Inspection and Insurance-Comnany (HSB)
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Dillon, ANII Zetec. Inc.
R.~-Vollmer-The-_NRC; inspector'also contacted'and' interviewed other-licensee 1and contractor employees.
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- Denotes those present at the, exit: interview on October 29,
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Inservice -Insoection (ISI) Unit 2
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Review of Procram'(73051)
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Conam, Westinghouse, Zetec,LandcLMT personnel. performed
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.the ISI-in accordance with ASME'Section XI, 1980 Edition,1 Winter 1981 Addenda..The staff size was s
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performed; The licensee did not make a request for.
relief from the'ASME' Code'this outage'. 'The NRC'
inspector reviewed 1 audit /surveillances of ISI
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activities conducted-by' qualified personnel to verify-compliance with the ISI program.
The ISI program'was-2'
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found to be in compliance with licensee commitments.
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Review of Procedures (73052)
All applicable ISI procedures were approved by the Authorized Nuclear Inservice Inspection (ANII) and were reviewed by the NRC inspector.
The ultrasonic examination (UT) pulse echo detection instruments and transducers of various angles, sizes, and frequencies were used.
The ISI procedures were found to be in accordance with ASME Section V, 1980 Edition, Winter 1981 Addenda.
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Data Review and Evaluation (73755)
(1)
General
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The examination data was within the criteria as-outlined in the applicable nondestructive examination (NDE) procedures and ASME Code requirements.
The NRC inspector's review included examination-of documents relative to NDE equipment, data,'and evaluations.
(2)
Eddy Current Examinations (ET)
The ET-was performed using the Zetec Eddynet MIZ-18' analysis and the Eddynet motorized rotating a
pancake coil (MRPC). display software.-
The bobbin i
coil and the MRPC were utilized for ET of the
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tubes. -An independent evaluation was performed by
.an analyst from Zetec.-
The NRC inspector reviewed
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theLET reports and1the results were as follows:
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Steam i
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Tubes Plugged-Total Tubes-Generator This Outaae Pluaaed-
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18 153
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In Steam. Generator 21, 6 plugs'were removed and in
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Steam Generator 22,-23 plugs were removed, and all
replaced with'Inconel 360..Nofsleeving was-
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performed.
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Observation of Work Activities-(73751)
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3.i The:NRC inspector: observed work activities and had
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IP discussions with personnel during the ISI activities.
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These' observations included the following.
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(1)
.Conam personnel performing eddy current
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examinations on many steam generator tubes in
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steam. generators 21 and 22.
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Zetec and Conam personnel utilizing the eddy current data acquisition and analysis system.
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LMT personnel utilizing the master slavc/ video ultrasonic examination system, pulse-echo ultrasonic flaw detection instruments, and various transducers.
(4)
LMT personnel performing visual examinations on safety injection suction pump #22, weld #W-143.
(5)
LMT personnel performing magnetic particle examinations on MS system, ISO #2-ISI-47A, weld
- MS-82 (on top of steam generator #22).
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LMT personnel performing liquid penetrant examinations on RHR system, ISO #2-ISI-20B, weld
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LMT: personnel performing ultrasonic examinations-on RHR system, ISO #2-ISI-20B, weld #13; ISO #2-ISI-46, weld.#W-1; ISO #2-ISI-151-34, weld #W-2;
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and ISO #2-ISI-37, weld #W-F;-also ultrasonic
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thickness measurements on MS system, ISO #2-ISI-47A, weld-#MS-82.
The NRC inspector reviewed the qualifications and certifications of all inspection personnel onsite performing 1ISI-to ensure:conformance with SNT-TC-1A.
lNo' violations or' deviations were identified..
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. Exit Interview The NRC; inspector met with licenseearepresentatives :(denoted m-iniParagraph.1) at the conclusion of the inspection.
The NRC, inspector summarized the scope-and findings'of the inspection noted in this report.
The-NRC'-inspector also.
' discussed the:likely informational content of the inspection:
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report;with regard to documents or processes reviewed by the
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1NRC inspector.during the inspection.'-The' licensee didlnot identify'such documents / processes as proprietary..
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