IR 05000352/1987015
| ML20235D882 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 06/24/1987 |
| From: | Mcbrearty R, Strosnider J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML20235D865 | List: |
| References | |
| 50-352-87-15, NUDOCS 8707100332 | |
| Download: ML20235D882 (6) | |
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U.S. NUCLEAR REGULATORY COMMISSION
REGION I
Report No.
50-352/87-15 Docket No.
50-352 License No.
NPF-30 Licensee:
Philadelphia Electric Company 2301 Market Street Philadelphia, Paan:ylvania 19101 Facility Name:
Limerick Generating Station, Unit 1 Inspection At:
Sanatoga, Pennsylvania Inspection Conducted: June 2-5, 1987 Inspectors:
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6[2fM7 Approved by:
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J. R. Strosnider, Chief, Materials and date
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rocesses Section, EB, DRS Inspection Summary:
50"352/87-15)
~ Inspection on June 2-5, 1987 (Inspection Report No.
Areas Inspected: A routine unannounced inspection by one regional based inspector was conducted of licensee activities associated with the turbine maintenance and inservice inspection programs including program review, data review, procedure review, observations of NDE in progress and QA/QC involvement.
Results: No violations were identified.
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DETAILS 1.
Persons Contacted'
Philadelphia Electric Company (PECo)
T. L. Anderson, NDE Level III C. R. Endriss, Admin. Engineer N. H. Gaffin, Supervisor Engineer Equipmepnt Branch E. C. Gibson, E & R Quality Assurance
T. C. Hinkle, Senior Engineer
J. Karack, ISI Engineer M. Logue, T. A. ISI Group
D. B. Neff, Compliance Engineer
C. O'Donnell, Quality Assurance Auditor
J. F Robert, NUOPS SRE QA Supervisor J. W. Spencer, Superintendent - Plant Services
W. A. T'exter, Engineer - Supervisor Nuclear Maintenance J. B. Verner, Test Engineer - Station Maintenance
C. Wyler, Engineer - Maintenance
General Electric Company E. Reczek, NDE Level III U. S. Nuclear Regulatory Commission Gene Kelly, Senior Resident Inspector
Denotes those present at the exit meeting.
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Inservice Inspection (ISI) Program The first 10 year Interval Inservice Inspection Program was submitted by
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the licensee to the NRC on October 23, 1985.
Based on review of the
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submittal, additional information was requested by the NRC, and the licensee complied with the request by submitting information on
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August 14, 1986, and by submitting revision 2 of the program on Janua ry 30, 1987.
The program is intended to meet the requirements of the ASME Boiler and Pressure Vessel Code Section XI 1980 Edition with Addenda through winter 1981, t
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The licensee's initial ISI program submitted was in response to Operating License Condition 2.c.(7) which required the licensee to submit the inservice inspection program by October 26, 1985 for NRC staff review and approval.
No violations were identified.
3.
Inservice Inspection Procedure Review The inspector reviewed selected implementing nondestructive examination (NDE) procedures to ascertain compliance with ASME Code and regulatory requirements and for technical adequacy.
The following were included in the inspector's review:
PECo Procedures SWI-6, Revision 6, Standard Work Instruction for Dye Penetrant Examination SWI-18, Revision 4, Standard Work instruction for Magnetic Particle Examination SWI-38, Revision 2, Visual Examination of Valves, Pumps, Bolting and Component Supports SWI-41, Revision 1, Visual Examination of Reactor Vessel Internals General Electric Procedures UT-PE-001, Revision 2, Automatic Ultrasonic Examination of Similar and Dissimilar Metal Welds in Piping Systems
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UP-PE-002, Revision 4, Manual Ultrasonic Examination of Similar and Dissimilar Metal Welds in Piping Systems LP-PE-001, Revision 1, Liquid Penetrant Examination Procedure MT-PE-001, Revision 0, Magnetic Particle Examination Procedure The inspector noted that procedure SWI-6 did not require recording surface temperature unless the temperature was outside the allowed range of 60 F to 125 F.
The licensee agreed with the inspector that examination documentation would be improved by including surface temperature on the report and stated that the requirement would be included when the next procedure revision is prepared.
The inspector found that the reviewed procedures complied with applicable requirements, and were technically adequate for their intended use.
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Observations of NDE in Progress The inspector observed the demonstration of the straight beam technique which is used by General Electric Company personnel for the examination of weld overlay / buildup using the General Electric Company Smart UT data acquisition system.
Procedure No. UT-PE-001, Supplement 1, Revision 0 is the governing procedure.
The calibration was performed using a 5.0 MH, 0.5" diameter transducer, and a k T side drilled hole in calibration block LIM-28-SS-OLAY.
The inspector found that the calibration was performed in accordance with the applicable requirements of the governing procedure.
The G.E. personnel who performed the calibration were found to be listed on the latest edition of the EPRI Registry of Weld Overlay Examination Personnel Qualification.
The overlay was applied to pipes at Limerick to maintain minimum wall requirements and not as a crack repair technique.
No violations were identified.
5.
Inservice Inspection Data Review The inspector reviewed selected ISI data to ascertain that the data were complete and accurate, and that ASME code and regulatory requirements were met.
Data associated with the following were included in the inspector's review:
Feedwater system check valves HVIF074 A&B Core spray system weld CSC-P-E Reactor Recirculation system snubber VRR-IRP-H004 (IA) - Five welds on the snubber Reactor Recirculation system weld RRB-007A The feedwater valves and the core spray weld were examined using the magnetic particle method with the magnetic field established with a magnetic yoke.
The recirculation system items were examined with the liquid penetrant method using the visible dye technique.
Because of internal shrinkage flaws in the valve bodies, the SER issued by the NRC contained the recommendation that the feedwater check valves be inspected for surface cracks on the inside and outside surfaces.
The inspections were to be performed at the first refueling outage and at other times when the valves are disassembled for maintenance.
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The inspector found that the data were readily retrievable, complete, and met code and regulatory requirements.
Licensee review was evident by virtue of the reviewer's signature. Additionally the inspector found that the examiners were properly qualified and certified in accordance with the 1980 Edition of SNT-TC-1A and the licensee procedure for qualification and certification of nondestructive examination personnel.
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No violations were identified.
6.
0A/QC Involvement in ISI Activities The inspector interviewed QA personnel and reviewed QA documents and audit
reports to ascertain that the licensee's QA program provided for evaluation of the licensee's ISI contractor, and that ISI activities were included in the QA program. The following were included in the inspector's review:
QAI 18-5, Revision 6, " Procedure for Q.A. Supplier Evaluation" Licensee QA evaluation of the General Electric Company ISI services capabilities.
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Report of QA Audit No. AL 85-42 ISI Check list for Audit No. AL 87-57 ISI The General Electric Company was approved as a qualified supplier of ISI services as a result of the evaluation which was performed in 1983. The inspector found that the evaluation complied with applicable requirements of QAI 18-05. QA audit AL 85-42 ISI was an audit of the licensee's ISI program, and was performed between May 16, 1986 and July 3,1986 at the site and at the licensee's Oregon Shop.
The audit covered various aspects of the ISI program, and documented three findings. The inspector's review indicated that non-conformance reports were issued and that the findings were properly closed out.
The auditor was found to have a strong background in the activities he audited, and he demonstrated a thorough understanding of those activities.
No violations were identified.
7.
Turbine System Maintenance Program
License Condition 2.C.(9) of Facility Operating License NPF-39 states,
"The licensee shall submit a turbine system maintenance program by October 26, 1987.
Prior to review and approval of that program by the NRC staff, the licensee shall volumetrically inspect all low pressure turbine rotors at the second refueling outage and every other (alternate)
refueling outage thereafter."
The inspector discussed with cognizant licensee personnel the program which is proposed by the licensee for submittal and implementation at the appropriate tim _ - _ _ _ _
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The inspector found that the licensee plans to submit to the NRC and j
implement a turbine system maintenance program which requires inspection j
of the low pressure turbine rotors over a six year interval during i
scheduled outages.
The program is based on an evaluation by the General Electric Company using the methodology which was used to establish the maintenance and inspection schedules for the Hope Creek Turbine system.
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In addition to the periodic examination of various valves in the main steam system, the proposed turbine maintenance program consists of
volumetric examination of the low pressure discs, visual and surface
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examination of the low pressure buckets, and visual examination of accessible surfaces of rotors and discs.
The licensee intends to include the turbine system maintenance program in FSAR Section 10.2.3.6 during a 1987 FSAR update.
8.
Exit Meeting The inspector met with licensee representatives, denoted in paragraph 1, at the conclusion of the inspection on June 5,1987.
The inspector summarized the purpose and scope of the inspection and the findings. At no time during this inspection was written material provided by the inspector to the licensee.
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