IR 05000269/1987025
| ML16161A856 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 07/30/1987 |
| From: | Bryant J, Peebles T, Skinner P, Wert L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML16161A855 | List: |
| References | |
| 50-269-87-25, 50-270-87-25, 50-287-87-25, NUDOCS 8708070057 | |
| Download: ML16161A856 (6) | |
Text
tRa FEG&o UNITED STATES NUCLEAR REGULATORY COMMISSION
REGION II
101 MARIETTA STREET, ATLANTA, GEORGIA 30323 Report Nos:
50-269/87-25, 50-270/87-25, and 50-287/87-25 Licensee:
Duke Power Company 422 South Church Street Charlotte, N.C. 28242 Facility Name:
Oconee Nuclear Station Docket Nos.:
50-269, 50-270, 50-287 License Nos.:
DPR-38, DPR-47, and DPR-55 Inspection Conducted:
une 16 - Ju y 13, 1987 Inspectors:
Wg, Jft.-5 A9nt dlate,/Signed.
rt
/atVSigned Approved by:
//7
?c T'A. P bles, Section Chief Date Signed Division of Reactor Projects SUMMARY Scope:
This routine, unannounced inspection involved resident inspection on-site in the areas of operations, surveillance, maintenance, engineered safety features lineups, and followup of event Results:
Of the five areas inspected, no violations or deviations were identifie e7RB70057 870730 PDR ADOCK O0269 PDR
REPORT DETAILS Licensee Employees Contacted
- M.S. Tuckman, Station Manager T.B. Owen, Maintenance Superintendent R.L. Sweigart, Operations Superintendent J.M. Davis, Technical Services Superintendent C.L. Harlin, Compliance Engineer
- F.E. Owens, Assistant Engineer, Compliance Other licensee employees contacted included technicians, operators, mechanics, security force members, and staff engineer Resident Inspectors
- J.C. Bryant
- P.H. Skinner L.D. Wert
- Attended exit intervie. Exit Interview The inspection scope and findings were summarized on July 13, 1987, with those persons indicated in paragraph 1 abov The licensee did not identify as proprietary any of the materials provided to or reviewed by the inspectors during this inspectio.
Licensee Action on Previous Enforcement Matters Not inspecte. Unresolved Items No unresolved items were identified during this inspectio.
Plant Operations The -inspectors reviewed plant operations throughout the reporting period to verify conformance with regulatory requirements, technical specifica tions (TS),
and administrative control Control room logs, shift turnover records, and equipment removal and restoration records were reviewed routinel Interviews were conducted with plant operations, maintenance, chemistry, health physics and performance personne Activities within the control rooms were monitored on an almost daily basis. Inspections were conducted on day and on night shifts, during week days and on weekend Some inspections were made during shift change in order to evaluate shift turnover performanc Actions observed were conducted as required by Operations Management Procedure 2-The complement of licensed personnel on each shift inspected met or exceeded the requirements of T Operators were responsive to plant annunciator alarms and were cognizant of plant condition Plant tours were taken throughout the reporting period on a routine basi The areas toured included the following:
Turbine Building Auxiliary Building Units 1,2, and 3 Electrical Equipment Rooms Units 1,2, and 3 Cable Spreading Rooms Station Yard Zone within the Protected Area Standby Shutdown Facility During the plant tours, ongoing activities, housekeeping, security, equipment status, and radiation control practices were observe Unit 1 began the report period at 87% power as limited by reactor building cooling unit and decay heat removal capabilities and continued at that level throughout the report perio Unit 2 operated at 87-88% power throughout the report period as limited by high steam generator leve Unit 3 operated at 100% power throughout the report perio Indications of failed fuel and of a small tube leak in a steam generator remained stable throughout the perio No violations or deviations were identifie.
Surveillance Testing Surveillance tests were reviewed by the inspectors to verify procedural and performance adequac The completed tests reviewed were examined for necessary test prerequisites, instructions, acceptance criteria, technical content, authorization to begin work, data collection, independent verification where required, handling of deficiencies noted, and review of completed wor The tests witnessed, in whole or in part, were inspected to determine that approved procedures were available, test equipment was calibrated, prerequisites were met, tests were conducted according to procedure, test results were acceptable and systems restoration was complete Surveillances witnessed in whole or in part:
PT/O/A/290/04 Turbine Stop Valve Movement PT/150/22L Test HPSW Valves for TDEFWP IP/I/A/305/10 RPS Pressure Switch Calibration IP/3/A/305/
RPS Online Test (Unit 1, Channel A)
No violations or deviations were identifie.
Maintenance Activities Maintenance activities were observed and/or reviewed during the reporting period to verify that work was performed by qualified personnel and that approved procedures in use adequately described work that was not within the skill of the trad Activities, procedures and work requests were examined to verify proper authorization to begin work, provisions for fire, cleanliness, and exposure control, proper return of equipment to service, and that limiting conditions for operation were me Maintenance witnessed in whole or in part:
WR 52482F Replacement of RPS (lB FWP) Pressure Switch WR 08234C Repair of LPSW Pump 3A Motor Coupling No violations or deviations were identifie.
Resident Inspector Safeguards Inspection In the course of the monthly activities, the Resident Inspectors included a review of the licensee's physical security program. The performance of various shifts of the security force was observed in the conduct of daily activities which included; protected and vital areas access controls, searching of personnel, packages and vehicles, badge issuance and retrieval, escorting of visitors, patrols and compensatory post In addition, the Resident Inspectors observed protected area lighting and protected and vital areas barrier integrity, and verified interfaces between the security organization and operations or maintenanc No violations or deviations were identifie.
Inspection of Open Items The following Licensee Event Reports and other open items are being closed based on review of licensee reports, inspection, record review, and discussions with licensee personnel, as appropriat (Closed)
LER 287/87-02:
Relay Actuation Starts Both Keowee Units and Causes A Load Shed. Relay actuation caused by maintenance work vibration adjacent to relay. Reactor was shut down at the tim Administrative controls established to prevent recurrenc (Closed)
LER 287/87-04:
Reactor Shut Down Due To Non-Isolable Leak In Reactor Coolant Syste Immediate corrective action was completed. Followup long term action will be covered under identical item for Unit (Closed)
LER 287/87-06:
HPI Suction Valves Found Closed With Breakers Ope This item is identical to item 87-16-01, which is being held open pending resolution of enforcement actio (Closed) IE Bulletin 86-02: Static "O" Ring Differential Pressure Switches. This item was addressed by DPC correspondence dated July 28, 1986. The licensee stated that the subject switches were not used in safety-related applications at Ocone This has been reviewed by Region II personnel and determined to be acceptabl Based on this review, this item is close.
Reactor Building and Decay Heat Coolers Oconee Inspection Report N discusses degraded performance of reactor building cooling unit (RBCU) and decay heat removal (DHR) cooler While the report dealt primarily with fouling and cleaning of the coolers, the impact of inlet cooling water temperature from Lake Keowee also was considere Cooling water to these coolers is supplied by the low pressure service water system (LPSW),
which takes suction directly from the condenser cooling water inle Licensee design calculations of cooler performance were based on a maximum LPSW inlet temperature of 75 degrees Since degraded cooler performance made inlet temperature more critical, the licensee has since made additional calculations based on higher inlet water temperatur The more restrictive temperatures concerned DHR coolers, which cool reactor coolant system water which is circulated by low pressure injection (LPI)
pump New calculations, which are preliminary, indicate the following reactor power limitations based on higher temperature Unit LPSW Tem Max Allowable Condition Degrees F Reactor Power (%)
80
2 LPI pumps
85 2 LPI pumps
80 100 1 LPI pump
100 2 LPI pumps
93 1 LPI pump
80 100 1 LPI pump
100 2 LPI pumps
96 1 LPI pump
The highest inlet cooling water temperature (average of the three units)
recorded since 1979 was 81.7% degrees F in August 198 The average cooling water inlet temperature on July 14, 1987 was 70.8 degrees F.