IR 05000282/1990003
| ML20012C494 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 02/07/1990 |
| From: | Danielson D, Jeffrey Jacobson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20012C492 | List: |
| References | |
| 50-282-90-03, 50-282-90-3, NUDOCS 9003220070 | |
| Download: ML20012C494 (6) | |
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U. S. NUCLEAR REGULATORY COMMISSION REGION 111 Report No. 50-282/90003(DRS)
h Docket No. 50-282 License No. DPR-42 Licensee: Northern States Power Company P. O. Box 59040 Minneapolis, MN 55459-0040 i
Facility Name:
Prairie Island Nuclear Generating Station, Unit 1 Inspection At:
Prairie Island Site, Welch, MN 55089
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Inspection Conducted:
January 23-26 and Febrmary 22, 1990 Inspector- <M[uuhhe J)7!fo
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vJ. M. Jacobson Date
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Approved By:
od7Y d w N
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D. H. Danielson, Chief Date Materials and Processes Section Inspection Summary inspection on January 23-26 and February 22, 1990 (Report No. 50-282/90003(DRS))
Areas Inspected:
Routine announced safety inspection of the licensee's inserviceinspection(ISI)effortincludingprogramreview(73051), procedure review (73052), data review (73755), and observation of work activities (73753).
Results: No violations or deviations were' identified. Based on the results of-the inspection, the NRC inspector noted the following:
The implementation of the ISI program followed the requirements of ASME Section XI and the licensee's program.
All activities were controlled by well stated and defined procedures.
The staff's of both the licensee and ISI contractor were knowledgeable and competent.
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In general, the' inspection results indicate a continuing good
performance.
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DETAILS
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Persons Contacted NorthernStctesPowerCompany_(NSP)
- L. Dahlman, Senior Materials and Special Processes Specialist
- S. Redner, Senior Materials 6nd Special Processes Specialist
- J. Rowan, Quality Assurance Supervisor R. Pearson, Production Engineer Nuclear Regulatory Consnissien (NRC)
- T. O'Connor, Resident Inspector
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Lambert, MacGill, Thomas. Inc. (LMT)
D. MacGill, Site Supervisor J. Wren, Level 11 D. Cox, Level 11 ConamInspection(Conam)
M. Gortemiller, Level III Zetec
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Vollmer, Level Ill The NRC inspector also interviewed other licensee and contractor personnel.
- Denotes those participating in the exit interview on February 22, 1990.
2.
Inservice Inspection (ISI)
a.
Review of Program (73051)
LMT, Conam, and Zetec performed the ISI in accordance with ASME Section XI, 1980 Edition, Winter 1981 Addenda. There was sufficient organizational staff to ensure that acceptable ISI work was performed.
Where ASME requirements were determined to be impractical, specific relief requests were requested from the office of Nuclear Reactor Regulation (NRR). The NRC inspector reviewed the specific relief requests including the related correspondence between the licensee and the NRC and had r.o questions.
The inspection scope for this outage consisted of 88 ultrasonic examinations (UT), 68 liquid penetrant (PT) examinations, 32 magnetic particle (MT) examinations, 134 VT-1 visual and 110 VT-3 visual (VT) examinations.
The NRC inspector found the ISI program to be properly implemented.
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b.
Review of Procedures and Personnel Certifications (73052)
(1) Lambert, MacGill, Thomas, Inc. (LMT) Procedures
" Visual Examination of Hanger Assemblies", No. ISI-VT-2,
Revision 0.
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" Magnetic Particle Exemination", No. ISI-MT-1, Revision 0.
" Liquid Penetrant Examination", No, ISI-PT-1, Revision 0.
" Ultrasonic Examination of Pipe Welds", No. ISI-VT-1,
Revision 0,
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" Ultrasonic Examination of Ferritic Vessels", No. JSI-UT-4,
Revision 0.
" Ultrasonic Examination of Stuos, Bolts, and Nuts",
No ISI-UT-4, Revision 0.
" Ultrasonic Examination of Welds in Austenitic and High
Nickel Alloy Materials", No. ISI-UT-16 Revision 0.
" Visual Examination", No. ISI-VT-1, Revision 0.
" Visual Examination of Pump and Valve Internal Pressure
Boundary Surfaces *, No. ISI-VT-3, Revision 0.
" Wet Magnetic Particle Examination", No. ISI-MT-2,
. Revision 0.
"High Temperature Liquid Penetrant Examination", No.
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ISI-PT-2, Revision 0.
" Automatic Data Recording", No. ISI-UT-2, Revision 0.
" Ultrasonic Examination of Studs and Bolts", No. ISI-UT-4B, Revision 0.
l-The above procedures were found to be in accordence with the ASME Code,Section XI, 1980 Edition with Winter 1981 Addenda.
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(2) LMT Personnel Certifications Name ASNT Level D. Affeldt
0. Cox
D. Halling
J. Johnson
D. MacGill Ill W. Raymer
G. Strait 111 A. Whealdon 111
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The above certifications were found to be in accordance with SNT-TC-1A(ASNT).
"Special Examination Procedure, Westinghouse Series 51
Steam Generator Tubing - MIZ-18 Digital", No. 42-EC-168, Revision 1.
"Multifrequency Eddy Current Procedure, Westinghouse
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Series 51 Steam Generator Tubing - MIZ-18 Digital",
No. 42-EC-165, Revision 3.
" Eddy Current Data Analysis Guidelines", No. ISI-ET-1, Revision 0.
The above procedures were found to be in compliance with the requirements of the ASME Code,Section XI, 1980 Edition with
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Winter 1981 Addenda. The NRC inspector also reviewed the qualification records for the 24 inch per second examination rate and found them acceptable.
(4) Conam/Zetec Personnel Certifications Conam Personnel Name ASNT Level M. Capere11o-11 B J. Funanich III R. Marlow II A M. Gortemiller III M. Keneipp II A M. Matheson II A The above cei'tifications were found to be in accordance with Conam's " Procedure for the Certification of NDE Personnel",
No. 99-CNTP-003, dated February 25, 1985 and'SNT-TC-1A, 1984 (ASNT).
Zetec Personnel Name ASNT Level R. Vollmer III N. Farenbaugh II A E. McKee II A R. Miranda III T. Woller III P. Anderson II A
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h The above certifications were found-to be in accordance with-Zetec's procedure No. Z-QA101-Al-1, " Personnel Qualification and Certification Procedure", and SNT-TC-1A, 1984 (ASNT).
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c.
Observation of Work Activities (73753)
The NRC inspector observed the following ISI activities:
System Item Method RVSIS 1-8843 B VT-1 CVCS Letdown "B" W-1 PT W-10 PT Main Steam "A" MS-184 UT, MT, VT-1 The above work activities were found to be performed in accordance with applicable = Codes and standards, d.
Review of Examination Data (73755)
The NRC inspector reviewed tapa recorded UT data for the following welds:
ISO No.
Weld No.
151-94 W-2 ISI-69A FW 2-16 ISI-69A FW 2-15 ISI-52A FW-164 151-13-RCCB-11 151-4 W-R The NRC inspector also reviewed tape recorded ET data for the following tube examinations of the steam generator No. 11 hot leg:
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Evaluations of the above examination data were found to be conservative.
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As a result of the steam generator tube examinations, the following
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actions were taken:
Three tubes were plugged in steam generator No. 11 due to
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support plate tube thinning on the cold leg side. With this L
addition, a total of 2.13% of the tubes are plugged.
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The examination of steam generator No. 12 resulted in the
detection of 49 new indications.
Forty-one indications were evaluated as tube sheet stress corrosion cracking, seven were evaluated as thinning on the cold leg side, and one on the hot leg,ide.
Of these, 37 tubes were sleeved and twelve were plugged resulting in a total of 1.87% of the tubes in.this steam generator being plugged.
Additional work on the steam generators included the removal of a total of 81 plugs considered susceptible to cracking.
Some tubes were returned to service by sleeving while others were replugged.
No violations or deviations were identified.
3.
Exit Meeting (30703)
The inspector met with site representatives (denoted in Paragraph 1) at u
the conclusion of the inspection. The inspector summarized the scope and findings of the inspection noted in this report.
The inspector also l
discussed the likely information content of the inspection report with
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l regard to documents or processes reviewed by the inspector during the I
inspection. The licensee did not identify any such documents / processes I
as proprietary, l.
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