IR 05000282/1979030
| ML19294B356 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 01/25/1980 |
| From: | Feierabend C, Warnick R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19294B350 | List: |
| References | |
| 50-282-79-30, 50-306-79-24, NUDOCS 8002280236 | |
| Download: ML19294B356 (6) | |
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U.S. NUCLEAR REGULATORY COMMISSION
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OFFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-282/79-30; 50-306/79-24 Docket No. 50-282; 50-306 License No. DPR-42; DPR-60 Licensee: Northern States Power Company 414 Nicollet Mall Minneapolis, MN 55401 Facility Name: Prairie Island Nuclear Generating Plant, Units 1 and 2 Inspection At: Prairie Island Site, Red Wing, MN Inspection Conducted: December 1 - 31, 1 8/$y// +L
/-2' N90 Inspector:
C. D. Feierabend J
)?&O Approved By:
R. F. Warnick, Chief
/- EJ~- JRC Reactor Projects Section 2-2 Inspection Summary Inspection on December 1-31, 1979 (Report No. 50-282/79-30: 50-306/79-24)
Areas Inspected:
Routine resident inspection of plant operations, main-tenance, security, review and audit, calibration, radiation protection, radioactive waste system, followup of IE bulletins and circulars, pre-paration for Unit 2 refueling, inspection of new fuel for Unit 2, and core performance. The inspection involved 71 inspector-hours by the resident inspector.
Results: No items of noncompliance or deviations were identified.
8002280
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DETAILS
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1.
Personnel Contacted
- F. Tierney, Plant Manager J. Brokaw. Plant Superintendent, Operations and Maintenance E. Watzl, Plant Superintendent, Plant Engineering and Radiation Protection A. Hunstad, Staff Engineer R. Lindsey, Superintendent, Operations J. Nelson, Superintendent, Maintenance J. Hoffman, Superintendent, Technical Engineering D. Mendele, Superintendent, Operations Engineering D. Scheulke, Superintendent, Radiation Protection S. Fehn, Senior Scheduling Engineer M. Sellman, Senior Nuclear Engineer M. Klee, Nuclear Engineer R. Conklin, Supervisor, Security and Plant Services K. Albrecht, Quality Assurance Engineer G. Sundberg, Instrument Engineer G. Lenertz, Engineer M. Mulhausen, Maintenance Supervisor D. Crago, Shift Supervisor G. Edon, Shift Supervisor P. Ryan, Shift Supervisor M. Balk, Shift Supervisor R. Held, Shift Supervisor D. Walker, Shift Supervisor
- Denotes attendance at exit interview.
2.
Plant Operations The inspector reviewed plant operations including examination of selected operating logs, special orders, temporary memos, jumper and tagout logs for the month of December. Tours of the plant included walks through the various areas of the plant to observe operations and activities in progrers to inspect the status of monitoring instruments, to observe for adherence to radiation controls and fire protection rules, to check proper alignment of selected valves and equipment controls, and to review status of various annunciators with operators.
The inspector performed independent verification of the status of Unit 2 containment air handling system, including alignment of valve and dampers, circuit breakers, control switches and alarms.
Unit I was placed in hot standby on December 31, 1979, to allow in-vestigation of a water leak inside containment. The inspector ob-served identification and repair of a packing leak on a reactor-2-
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coolant system vent valve. The generator was off the line for ap-proximately 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />.
The inspector also reviewed annunciator status, recorder charts, surveillance records, and logs to verify that plant operations were maintained in accordance with Technical Specification requirements.
No items of noncompliance or deviations were identified.
3.
Preparation for Refueling of Unit 2 The inspector reviewed changes to refueling procedures since the previous refueling.
a.
D3 Reactor Vessel Head Removal - September 25, 1979 b.
D5 Reactor Refueling Operation - April 11, 1979 c.
D7 Reactor Vessel Closure - May 21, 1979 d.
D8 Filling and Venting the Reactor Coolant System -
October 4, 1979 e.
D9 Fuel Receipt - October 11, 1979 4.
Inspection of New Fuel for Unit 2 The inspector observed arrival of the new fuel on site, control of moving a vehicle into the auxiliary building, unloading some of the shipping containers, and inspection and storage of four new fuel elements.
No items of concern were identified.
5.
Maintenance The inspector reviewed several work requests (WR's) and work request authorizations (WRA's) and verified that all required reviews and approvals had been completed. The inspector reviewed the status of older work requests shown as open on the work request log and deter-mined that several had been completed or could be cancelled. The appropriate supervisors took action to have the log entries completed.
The inspector examined the No. 21 RHR pump casing where a " weep" had been identified by observation of accumulation of boric acid crystals in the insulation. Visual examination showed the leakage to be one drop in 15 minutes with the RER pump operating at minimum flow.
The licensee had removed the pump from service, completed nondestruc-tive testing and returned the pump to service within the time allowable by Technical Specifications.
The inspector examined radiographs of the casing together with licensee NDE personnel and observed no indication of any cracks.
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There appeared to be a light indication of porosity that would be
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acceptable for Class 2 castings. Discussions with the licensee NDE personnel indicated that review of the film from NDE performed during construction showed the same apparent porosity, which was evaluated as acceptable.
The licensee evaluated the condition of the RHR pump and determined
'that the " weep" did not affect operability of the pump and did not pose a threat of potential failure that would affect operability.
The evaluation was discussed and approved by the Operations Committee on December 11, 1979.
The licensee will perform repairs during the next refueling outage, scheduled to begin January 2, 1980. The inspector plans to observe the repairs to determine the extent of the porosity.
No items of noncompliance or deviations were identified.
6.
R,diation Protection a
The inspector examined radiation protection instruments in use on December 13, 1979 including area monitors, air sampler, continuous air monitors and portable survey instruments (friskers) at various locations within the auxiliary building. The inspector also observed radiation monitorir.g performed by a contract radiographer during examination of a RHR pump. All instruments observed were operating and were identified as having current calibration.
The inspector observed work in progress in areas requiring radiation work permits and observed radiation area posting and controls in several work areas in the auxiliary building and in Unit 1 containment.
Containment entry and access to high radiation areas were under direct control of a health physics technician.
No items of noncompliance or deviations were identified.
7.
ladioactive Waste Systems The inspector reviewed records for all liquid and gaseous releases for the week of December 2-8, 1979, verified that the required samples and approvals were obtained and that they were performed in accordance with approved procedures. The documentation included verification that effluent release control instrumentation was oper-able.
No items of noncompliance or deviations were identified.
8.
Core Performance The inspector observed a portion of a flux mapping operation in pro-gress and reviewed the results of the core performance measurements-4-
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conducted on both units during the months of October and November
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1979. All Technical Specification requirements were completed.
No items of noncompliance or deviations were identified.
9.
Calibration The inspector reviewed records to verify calibt.. tion of licensee test standards and test instruments, a.
P1-301, General Radio 100 Ohm Standard b.
P1-302, General Radio 1000 Ohm Resistor c.
P1-302, General Radio 10K Ohm Resistor d.
P1-303, General Radio 100K Ohm Resistor e.
P1-304, General Radio IM Ohm Resistor f.
P1-20, Heise Test Gage, 0-100 psi g.
P1-23, Heise Test Gage, 0-1000 psi h.
P1-29, Heise Test Gage 0-30" Hg i.
P1-150, L&N Millivolt Potentiometer No items of noncompliance or deviations were identified.
10.
Security The inspector conducted periodic observations of access control, issuing badges, vehicle inspection, escorting, and communication checks.
No items of nonccmpliance or deviations were identified.
11.
IE Circulais The inspect (r verified that the licensee had received IE Circulars and had taken actions to review for applicability and implementation where required.
(Closed)
a.
IEC 78-16, Limitorque valve actuators b.
IEC 79-04, Loose locking nut on Limitorque Valve operator c.
IEC 79-13, Replacement of diesel fire pump starting contactors d.
IEC 79-19, Loose locking devices on Ingersoll-Rand pump impellers e.
IEC 79-22, Stroke times for power operated relief valves 12.
IE Bulletins The ir.cdector reviewed the licensee's actions in response to the following IE Bulletins and determined that the responses accurately reflect the actions taken.
(Closed)
a.
IEB 79-21, Temperature effects on level measurements b.
IEB 79-15, Deep draft pump deficiencies-5-
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13.
Exit Interview
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The inspector conducted an exit interview with Mr. Tierney at the conclusion of the inspection.
The inspector discussed the scope and results of the inspection and stated that no items of noncompliance or deviations were identified.
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