IR 05000282/1981017
| ML19332E990 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/11/1981 |
| From: | Burgess B, Feierabend C, Little W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19332E967 | List: |
| References | |
| 50-282-81-17, 50-306-81-19, NUDOCS 8912130239 | |
| Download: ML19332E990 (5) | |
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U.S. NUCIE.AR REGUIATORY COMMISSION
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0FFICE OF INSPECTION AND ENFORCEMENT
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REGION III
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Report No: ' 50-282/81-17;'50-306/81-19
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Docket No: '50-282; 50-306 License No:: DPR-42; DPR-60
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Licensee:- Northern States: Power Company E
.414 Nicollet Mall'
Minneapolis, MN 55401
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Facility Name
. Prairie; Island Nuclear' Generating Plant F
Inspection'At: Prairie LIsland Site Red-Wing, MN 55066 I
_LInspection' Conducted: August 1-31, 1981-
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l Inspectocs:
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B. L. Bur ess i
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-Approved By:
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Reactor Projects Section 2C l
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- ns pec tion - Summary
- nspection on August 1-31. 1981 (Report No: 50-282/81-17; 50-306/81-19)
Areas Inspected: Routine resident inspection of plant operation, prepara-tion for refueling, surveillance, security, radiation protection, and followup on IE Bulletins and Licensee Event Reports. The inspection in-volved:a total of 114 inspector hours onsite by 2 NRC inspectors including 24 inspector hours onsite during off-shifts.
Results: No items of noncompliance were identified.
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DETAILS
- 1. -Personne1' Contacted
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F. Tierney, Plant Manager.
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. J.. Brokaw, Plant Superintendent, Operations and Maintenance E. Watzl.. Plant Superintendent, Plant Engineering and Radiation Protection A. Hunstad,- Staf f Engineer R. Lindsey, Superintendent, Operations
' J. LNelson, Superintendent; Maintenance J. Hoffman, Superintendent, Technical Engineering
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.D..Schuelke, Superintendent, Radiation Protection M. Klee,1 Superintendent, Nuclear Engineering S. Northard, Nuclear Engineer D. Haugland, Engineer.
B. Stephens, Engineer.
G. ' Lenerts, Engineer
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Beadell, Engineer
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D.1Hansen, Inservice Inspection Engineer
. D. 'Cragoe, Shif t Supervisor
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R. Flack, Shift Supervisor
M. Balk, Shift Supervisor D. Walker, Shift Supervisor P. Valtakis, Shif t Supervisor 2.
Operational Safetv Verification j
n a.
General-Unit 2 operated at power throughout the month. Unit 1 operated at power until August 31, when a turbine trip from 100% power' occurred due to a failure-in a turbine control logic circuit.
Preparations
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for restart were in progress.
The licensee has started grading operations in conjunction with modification of the intake and discharge canals.
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Control Room Observations The inspe.ctor observed control room operations, reviewed applicable
.4 logs, conducted discussions with control room operators and observed shift. turnovers. The inspector verified the operability of selected emergency systems, reviewed equipment control records and verified proper return to service of affected components.
Thelicenseehascontinuedtomonitorthesmallprimarysystemleapy into Unit I containment described in a previous inspection report.--
Additional containment inspections have not identified the source.
Leakage has not increased significantly, and is still too small to be of concern. The unit is scheduled to shutdown for refueling in September.
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/1,.-IE Inspection Report No. 50-282/81-15; 50-306/81-18-2-
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Tours of the' auxiliary, turbine and containment buildings and external-ll
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areas were conducted to' observe plant equipment conditions, including.
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potential fire hazards,.and co verify that maintenance work requests J
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had been initiated for equipment in need of maintenance.
No items
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. of concern were identified.
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d.. Independent Verification The inspector performed independent verification of return to service af ter' operability testing of the No.21 diesel cooling water pump and
.after-preventive maintenance on the D-2 diesel generator.
3.x Steam Generator Tube Leak f
On August 20th the Unit 2 air ejector offgas and steam generator blow-
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down monitors:showed an activity increase, indicating a small. primary
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to. secondary steam generator tube leak. The licensee initiated a l sampling schedule to monitor the amount of leakage. The leak appears to have stabilized at approximately 0.1 gallons per minute, about 10%
of the. leakage allowable by Technical Specification. The licensee is continuing to monitor the leakage, as a leak of this magnitude would l,
be difficult to find. The licensee is planning to shutdown for repairs if.the leak should increase, js 4.
Surveillance.
The -inspectors witnessed portions of surveillance testing of safety re-L lated system and components. The. inspection included verifying that the.
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tests were scheduled and performed within Technical Specification require-ments, observing that procedures were'being followed by qualified opera-
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tors, that LCO's were not violated, that system and equipment restoration
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l-was: completed, and that test results were acceptable to test and Techni-cal Specification requirements.
l Tests witnessed included:
SP-1186 Diesel Cooling Water System Test.
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The test was required because of preventive maintenance performed on D-1.
Test was satisfactory.
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L The inspector reviewed surveillance testing of safety related systems L
and components to insure that the test procedure was adhered to, that documentation of informatioa was accurate, and that Technical Specifica-tions were complied with.
No items of concern were identified.
Tests reviewed included:
SP-1136-2 Volumetric Check of Maintenance Airlock.
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SP-1004 Nuclear Power Range Axial Offset Calibration Check.
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"IE Bulletins j
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The inspector completed review of the licensee's actions in response to
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the following Bulletins and verified that the required actions are b
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IEL No. 80-04 Analysis of a PWR Main Steam Line Break with 0*
.j Continued Feedwater Addition.
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The licensee hg gmpleted the review and has report-ed ' the results- - in accordance with the actione
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required.
(Closed)
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IEB No. 80-05-Vacuum Conditions Resulting in Damsge to CVCS.
Holdup Tanks.
-The licenses has' completed a design change that adds a low suction pressure trip to the holdup tank trans-fer and recirculation pumps.
(closed)
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IEB No. 79-18 Audibility-Problems Encountared on Evacuation of Personnel from High Noide Areas.
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The inspectors confirmed that licensee actions described in their response have been completed.
l The licensee continues to check for audibility during emergency drills.
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- 6.. Licencee Event Report-Followup
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Through direct observations, discussions with licensee personnel, and review of records, the following event reports were reviewed to deter-mine that reportability requirements were fulfilled, immediate corrective action was accomplished, and corrective action to prevent recurrence had been accomplished in accordance with Technical Specifications.
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P-RO-80-38 One Steam Exclusion Setpoint Drf f.ted Out of -
Specification.
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P-RO-81-06 Inoperability of Two Unit 2 Charging Pumps.
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P-RO-81-11 Inoperability of D-2 Diesel Generator While D-1 was Out of' Service for Preventive Maintenance.
The report accurately described the event. The licen-see's imediate corrective actions restored operabil-icy within 14 minutes of the trip and lockout when the 8enerator was synchronized to the bus. All offsite power resources were available and all other safeguards systems were operable. The licensee would have been required to place both units in cold shutdown if D-2 had not been demonstrated to be operable.
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/,2, NSP Letter to RIII, Subject IE Bulletin No. 80-04 dated May 15, 1980.
[3, NSP Letter to RIII, Subject IE Bulletin No. 80-04 dated August 12, 1981.
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The licensee is investigating advisability of changing
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the faces of the electrical meters to provide better
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~ " human factor / engineering" to aid in differentiating, I s-i k
between them.
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Preparation for Refueling
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The inspectors reviewed refueling and fuel receipt procedures to insure
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-that technically adequate approved procedures were available covering the receipt, inspection, and storage of new fuel and the handling and storage of spent fuel. The inspectors also reviewed the licensee's
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program'for outage control.
The inspectors witnessed portions of the receipt, inspection, and
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storage of new fuel..This included verification-of the qualification of fuel receipt inspectors, and verifing compliance with the fuel receipt' procedures.-
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Management Interviews.
The inspectors attended an exit ' interview conducted.by RIII inspector
- A. Finley' on August 21, 1981.
No' items of~ concern were identified.
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o The Senior Resident Inspector, together with the Senior Resident Inspector
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from Monticello, attended a meeting of the Northern. States Power Company
'. Board of Directors Power Supply Conmittee in the licensee's corporate
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office on August 26, 1981.- The inspectors discussed the functions of C
the NRC and the role of the resident inspector in implementing the IE inspection program.-
The~ inspectors conducted interim interviews during the inspection period and met with Mr. Tierney at the conclusion of the-inspection.
The inspector discussed the scope and results of the inspection.
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