IR 05000298/1979011
| ML19249B335 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 07/11/1979 |
| From: | Constable G, Martin L, Westerman T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML19249B329 | List: |
| References | |
| 50-298-79-11, NUDOCS 7909040288 | |
| Download: ML19249B335 (4) | |
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U. S. NUCLEAR REGULATORY CCS', MISSION OFFICE OF INSPECTI-ON AND Ef;FORCEMEflT
REGION IV
Report No. 50-298/79-11 Docket No. 50-298 License No. DPR-46 Licensee:
Nebraska Public Power District P. O. Box 499 Columbus,fiebraska 68601 Facility flame:
Cooper tiuclear Station Inspection At:
Cooper tiuclear Station, Nemaha County, fiebraska Inspection Conducted:
June 5-8, 1979 e
Principal Inspector:
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G. L.' Constable, Reactor Inspector eDate
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Personnel:
L. E. Martin, Reactor Ihspector Uate Approved By:
7 b d/[46CA 7- / / -71 T. F. Westerman, Chief, Reactor Projects Section Date Inspection Summary
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Inspection on June 5-8, 1979 (Report tio. 50-290/79-11)
Areas Inspected:
Routine, unannounced inspection of surveillance testing program and a review of plant operations.
The inspection involved forty-eight (48)
inspector-hours on-site by two (2) NRC inspectors.
Results:
Of the two areas inspected, no items of noncompliance or deviations were noted.
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_2-DETAILS Persons Contacted L. I. Lawrence, Maintenance Supervisor B. Brungardt, Surveillance Testing Coordinator B. Land, Maintenance ClerL A. Jantzen, I&C Supervisor M. E. Cashatt, Shif t Supervisor
- L. C. Lessor, Station Superintendent
- Present at the exit interview.
In addition to the 6bove technical and supervisory personnel, the inspectors held discussions with various maintenance, operations, technical support and administrative members of the licensee's staff.
1.
Plant Status During the period of this inspection, the plant wcs in routine power operation at approximately 85% power.
2.
Surveillance Testing and Calibration Control Progran.
The purpose of this inspection effort was to review tne licensee's program for surveillance testing and calibration control for plant process and testing and measurement equipment. This review was to verify that the licensee's program as developed and implemented conferms with the require-ments of 10CFR50, ANSI N45.2.4-1972, FSAR Chapter XIII, FSAR Appendix J, Technical Specification Sections 4 and 6, Regulatory Guide 1.33, IEEE 336, and applicable industry standards and guides.
The scope of this inspection effort included discussions with supervisory and coordination personnel, review of maintenance, surveillance and calibration schedules, logs and status reports, and the review of the following procedures and records, as applicable to the purpose of this inspection effort.
Administrative Procedure 1.2, Rev. 5, Responsibility Administrative Procedure 1.4, Rev. 32, Station Rules of Practice Administrative Procedure 1.5, Rev. 3, Training Program Administrative Procedure 1.7, Rev.11, Station Maintenance Administrative Procedure 1.9, Rev. 6, Surveillance Program Administrative Procedure 1.10, Rev.10, NCR's and Corrective Action Administrative Procedure 1.12, Rev. 5, Procedures, Report Use and Format g
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-3-Maintenance Frocedure 7.1, Rev. 3, Preventative Maintenance Program Calibration Records for IS 2073 and IS 1706 Surveillance Procedure 6.1.8, Rev. 11, Turbine OPC Pressure Switch Te^t Data for TGF PS63-0PC-2 per SP 6.1.8, completed on 6/7/79 fionconformance Reports 1614 and 1620 fio items of noncompliance or deviations were identified.
3.
Review of Plant Operations The purpose of this inspection effort was to review plant operations to verify that no abnormal conditions were present and to observe that operations were being conducted in accordance with license conditions and other flRC requirements.
The inspector reviewed the logs and records listed below, held discussions with shift personnel, observed instrumentation, and toured accessible areas of the plant.
flight Order Book, March - June 5,1979
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Shif t Supervisor's Log, May 3 - June 7,1979
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Control Room Operator's Log, March 29 - April 25, and May 20 -
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June 6,1979 Jumper Log - All outstanding entries
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Special Order Log and Instruction Log - All outstanding entries
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Scram Reports, April 7 - May 25,1979
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Special Work Permit Log, May 5 - June 7,1979
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Maintenance Work Request Log - All current entries
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Station Operator's Log, May 21 - May 31,1979
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fionconformance Reports, April 1 - May 31,1979
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fio items of noncompliance or deviations were identified.
During the review of plant operations, the following unusual conditions were noted.
On May 25,1979, a high power reactor scram occurred as a result of recirculation pump overspeed. The overspeed apparently occurred as ' result of a failure of the Baily positioner, which adjusts recirc pum, ; peed. Subsequent troubleshooting of the Baily positioner failed to iuentify the cause of the overspeed condition. The reactor was re-started with the scoop tube that controls the speed of the recirculation pump in manual control.
A licensee representative stated that the Baily positioners will be replaced at some as yet unspecified date.
The resolution of this item will be reviewed during subsequent inspections.
On May 13, 28, and 31, 1979, plant operators observed conditions that indicated that a fire or fast burn had occurred in the off-gas system between the air ejectors and the catalytic recombiner.
The cause of these burns is unknown at this time. The operators received an offgas high/ low flow alarm and high filter differential pressure alarm.
Offgas flow indication pegged high for a short time. Vent monitor activity was observed to decrease, apparently as a result of the decreased volume in the system.
The operator also reported that the general radiation levels 911a
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in the area of the air ejectors increased. One of these fires continued to burn at the air ejector for approximately two hours, at which time it was extinguished. The licensee's plans for solving this problem involve a redesign of the augmented offgas system.
This item will be reviewed during future inspections.
4.
Exit Interview The inspectors met with the Station Superintendent at the conclusion of the inspection. The scope of the inspection and the findings were discussed.
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