IR 05000263/1977019
| ML20024G581 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 10/14/1977 |
| From: | Danielson D, Eric Lee NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20024G578 | List: |
| References | |
| 50-263-77-19, IEB-76-04, IEB-76-4, NUDOCS 9102120698 | |
| Download: ML20024G581 (5) | |
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U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENPORCEMENT
REGION III
Report No. 50-263/77-19 Docket No. 50-263 License No. DPR-22 Licenseet Northern States Power Company 414 Nicollet Hall Minneapolis, MN 55401 Facility Name: Monticello Nuclear Generating Station Inspection at: Monticello Site, Monticello, MN Inspection Conducted:
September 27-30 and October 3-6, 1977 O.M-sh7 A
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Inspector:
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Approved by:
D. H. Danielson, Chief 4-Engineering Support Section 2 Inspection Summary Inspection on September 27-30 and October 3-6 1977 (Report No. 50-263/77-19)
Areas Inspected: Documents and vork activities relative to inservice inspec-tion, pipe support and restraint systems; IE Bulletin No. 76-04 (cold work S.S. piping); removal of RPV feedwater nozzle cladding. The inspection involved 51 onsite hours by one NRC inspector.
Results:
No items of noncompliance or deviations were identified.
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9102120698 771014 PDR ADOCK 05000263 o
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l DETAILS Persons Contacted Pri_ncipal Licensee Employees
- D. Antony, Plant Engineer, Operations
- D. Brosche, Assistant QC Engineer B. Day, Plant Engineer
- L. E11ason, Plant Manager
- D. Hanson, Assistant QC Engineer O. Iverson, Assistant Product Engineer
- P. Krumpos, QC Engineer
- W. Shamla, Plant Engineer, Technical Other Personnel
- D. Arremony, Consultant, Arremony Associates The inspector also contacted several other licensee and his contractor's employees, including, shift engineers and members of the technical and engineering staffs.
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- denotes those attending the exit interview.
Licensee Internal Audits The inspector reviewed the licensee internal audit report covering ISI activities for this outage.
No items of noncompliance or deviations were identified.
Licensee Action on IE Tulletins The licensee has completed ultrasonic examinations for both loops A and B of the Core Sprhy System piping as committed by the licensee's letter dated December 20, 1976 in answering to IE Bulletin No. 76-04 No recordable indications were found. The inspector also randomly selected three UT reports for review. The inspector determined proce-No items cf noncompliance and deviations dural requirements were met.
were identified.
Functional or Program Areas _ Inspected 1.
Review of ISI Program The inspector reviewed the licensee's ISI contractor (Lambert, MacGill, Thomas, Incorporated) QA Manual and verified that 10 CPR 50, (
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Appendix B requirements applicable to ISI were met. The inspector also reviewed the Tall, 1977 outage, ISI program and verified that the Technical Specifications and the ASME Section II requirements were met. No items of noncompliance or deviations were identified.
2.
Review of NDE Procedures The inspector reviewed seven ultrasonic examination procedures, one visual examination procedure, one liquid penetrant examination procedure, one magnetic particle examination procedure, eight NDE personnel qualifications, three ultrasonic instrument certifications, two recorder certifications. three transducer certifications, ultra-sonic couplant test reports and certifications of cleaner, penetrant and developer. It was determined that the above documents met the applicable code and procedural requirements. No items of noncompliance or deviations were identified.
3.
Observation of ISI Work Activities The inspector observed the following work activitiest PT examinations of loop A core spray piping welds No. CSAT-3 a.
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and No. CSAT-2. Acceptable rounded indications were identified on Weld No. CSAT-3, no indication was identified on veld No. CSAT-2.
b.
UT examinations of loop B core spray piping veld No. CSBT-2 and Reactor Pressure Vessel to flange veld. No recordable indications were identified.
The inspector determined that the above examinations were conducted in accordance with the applicable procedures.
It was further
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determined that personnel performing the examinations were quali-fied and that the equipment used were currently calibrated. No items of noncompliance er deviations were identified.
4.
Review of ISI Records The inspector reviewed two magnetic particle examination, one liquid penetrant examination, one visuni examination and six
ultrasonic examination reports. The reports reviewed were piping welds in the Main Steam Teedwater, Residual Heat Removal, and
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Recirculation Bypass systems, Reactor Pressure Vessel to flange welds and Reactor Pressure Vessel ligaments. The inspector determined that the reports met the applicable procedural require-
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ments and the reports did not indicate discontinuities were found
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during the examinations.
Due to the fact that the outage is still
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k in progress, the reports reviewed by the inspector had not been reviewed by the licensee and the Authorized Inspector. The inspec-tor has no further questions on this matter at this time.
No items of noncompliance or deviations were identified.
5.
Surveillance of Pipe Support and Restraint Systems a.
Review of Program and Procedures The inspector reviewed two procedures relative to the operational testing and inspection of hydraulic snubbers.
The inspector determined that the procedures are acceptable and met the Technical Specification requirements.
b.
Observation
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The inspector independently inspected three hydraulic snubbers outside the drywell, thret hydraulic snubbers inside the drywell, six spring hangers inside the drywell and the associated supporting structures for the above items. The inspector determined that (1) items are physically acceptable, (2) bolts, nuts appeared to be right and secure, (3) spring hangers were in their appropriate positions and (4) fluid in hydraulic snubbers does not appear i
to be leaking.
c.
Review of Records The inspector reviewed the hydraulic test and surveillance reports. The inspector determined the tests and inspections were conducted in accordance with Technical Specification and procedure requirements. The inspector further established from the reports that the fluid level, lock-up and bleed rates met the procedure requirements.
No items of noncompliance or deviations were identified.
6.
Removal of RPV Peedvater Nozzle Cladding a.
Review of Procedu'_es The inspector teviewed twenty General Electric Company and licensee prosedJres. The procedures reviewed included assembly and it.sta11ation of platform, cleanliness instruc-tions, removal and installation of the feedwater spargers, material control, NDE, rigging and alignment of the cladding removal machine and machining. The inspector determined the procedures to be acceptable.
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Observation of Work Activities _
b.
The inspector obsgrved the alignment of the cladding removal feedvater nozzle and determined that machine to the 45 (2)
(1) vork activities were in accordance with procedures,)
travelers were signed-of f at the proper sequence and (3 tools entering the RPV vere controlled, Review of Records c.
The inspector reviewed the pre-cladding removal PT records The reports of the RPV feedvater nottle inner radii.
indicated seversi indications (porosities, undercuts and previous grinding marks) were identified on all nozzles and one small (approv.imately 3/16" long) linear indication was identified in the 315 nozzle.
No items of noncompliance or deviations were identified.
Exit Interview The inspector met with licensee representatives at the conclusion of The inspector bu=marized the scope the inspection on October 6, 1977.The licensee acknowledged the information.
and findings of the inspection.
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