IR 05000280/1986010
| ML18149A171 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 05/16/1986 |
| From: | Marlone Davis, Ignatonis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML18149A170 | List: |
| References | |
| 50-280-86-10, 50-281-86-10, NUDOCS 8606020285 | |
| Download: ML18149A171 (6) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION
REGION II
101 MARIETTA STREET, N.W.
ATLANTA, GEORGIA 30323
Report Nos. :
50-280/86-10 and 50-281/86-10 Licensee: Virginia Electric and Power Company P.o: Box 26666 Richmond, Virginia 23261 Docket Nos.:
50-280 and 50-281 Facility Name:
Surry 1 and 2 License Nos.:
DPR-32 and DPR-37 Inspection Conducted: April 8 through May 5, 1986 Inspectors:
Jri Approved by:
vi~ sfdent Inspector A. ~g toni~ Section Chief Division of Reactor Projects SUMMARY Da'te Signed 5 /;t /;{£ Da-te Si'gned Scope:
This inspection involved 136 inspector-hours in the area of plant operations and operating records, plant maintenance and surveillance,plant security, design change review, and LER revie Results:
In the areas inspected, no violations or deviations were identifie PDR ADOCK 05000280 G
- Persons Contacted Licensee Employees REPORT DETAILS R. F. Saunders, Station Manager D. L. Benson, Assistant Station Manager H. L. Miller, Assistant Station Manager D. A. Christian, Superintendent of Operations E. S. Grecheck, Superintendent of Technical Services J. W. Patrick, Superintendent of Maintenance J. Logan, Supervisor, Safety Engineering Staff S. Sarver, Superintendent of Health Physics R. Johnson, Operations Supervisor D. Driscoll, Site Quality Assurance Manager Other licensee employees contacted included control room operators, shift technical advisors, shift supervisors, chemistry, health physics, plant maintenance, security, engineering, administrative, records, contractor personnel and supervisor Exit Interview The inspection scope and findings were summarized on a weekly basis with certain individuals identified in paragraph 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 This item was not inspected during this reporting perio.
Operations (61726) (71707) Units 1 and 2 operations were inspected and reviewed during the inspection perio The inspector kept informed, on a daily basis, of the overall status of both units and of any significant safety matters related to plant operation Selected portions of operating logs and data sheets were reviewed dail The inspector observed control room staffing during the inspection period to verify that contro 1 room manning requirements were being me In addition, the inspector observed shift turnover to verify that continuity of system status was maintaine The inspector periodically questioned shift personnel relative to their awareness of plant conditions.
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Through log review and plant tours, the inspector verified compliance with selected TSs and LCO The inspector conducted various plant tours and made frequent visits to the control roo Observations included the following:
witnessing work activities in progress; verifying the status of operating and standby safety systems and equipment; and confirming valve and breaker positions, instrument and recorder readings, and annunciator alarm The inspector verified that equipment was properly tagged, that plant housekeeping efforts were adequate, that appropriate radiation controls were properly established, that clean areas were being controlled in accordance with procedures, that excess material or equipment was stored properly, and that combustible material and debris were disposed of expeditiously. During tours, the inspector monitored the plant for unusual fluid leaks, piping vibrations, piping hanger and seismic restraint settings, instrument calibration dates, and adequacy of fire fighting equipmen Certain tours were conducted on backshifts. Inspections included areas in the Units 1 and 2 cable vaults, vital battery rooms, fire pump house, Units 1 and 2 Steam Safeguards areas, emergency switchgear rooms, diesel generator rooms, control room, auxiliary building, and cable penetration area On a regular basis, radiation work permits (RWPs) were reviewed and specific work activities were monitored to assure they were being conducted per the RWP Selected radiation protection instruments were periodically checked, and equipment operability and calibration frequency were verifie Unit 1 operated at power for the duration of the reporting period; no reactor trips or shutdowns occurre At 8:48 a.m. on April 21, 1986, the inspector was performing a walkdown inspection of the Unit 2 control board and noticed that the turbine had dropped approximately 50 MW and condenser vacuum was decreasing rapidl The inspector alerted shift personnel who responded and promptly diagnosed the problem as two condenser inlet valves (MOV-CW-206 A and C) stroking close The valves were immediately reopened and condenser vacuum was restore The breakers for the valves were opened and placed under administrative control. The cause of the incident was water from a hydro laser cleaning operation in the area of the inlet side of the condenser shorting out a flood control panel in the sump surrounding the condense The flood control system is designed to shut the four water box inlet valves (MOV-CW-206A,B,C,D)
in the event of a Ci rcul at i ng Water piping break in the turbine building basemen The short in the flood control pane 1 caused two water box inlet valves to commence stroking closed without actuating
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the flooding annunciator in the control roo Operations personnel are to be commended for their quick action which prevented a unit trip on low condenser vacuu Unit 1 is scheduled to be shut down on May 9, 1986, for a two* month refueling and maintenance outag Unit 2 operated at power for the duration of the reporting period; no reactor trips or shutdowns occurre.
Surveillance and Maintenance Inspections (62703) (71710)
During the reporting period, the inspector reviewed various surveillance and maintenance activities to assure compliance with the appropriate procedures and T Inspections areas included the following: The inspector observed the performance of Unit 2 Period Test PT Nucl ear Instrumentation System Power Range Trip Channe 1 Test 11 for channels N-42 and N-43 on April 29, 198 The inspector observed the performance of Unit 1 Periodic Test PT Steam Generator Leve 1 11 functi ona 1 test for channe 1 s L-1485 and L-1495 on April 30, 198 The inspector observed the performance of Unit 1 Periodic Test PT Steam Line Pressure 11 functional test for channels P-1474 and P-1484 on April 30, 198 The inspector performed an ESF system walkdown on April 17, 1986, to verify operability of the accessible and essential portions of the Units 1 and 2 Auxiliary Feedwater Systems and Containment Spray System Reactor coolant system leak rates were reviewed to ensure that detected or suspected leakage from the system was recorded, investigated, and evaluated and that appropriate actions were taken, if require In the areas inspected, no violations or deviations were identifie.
Design Changes and Modifications (37700)
The design change and modification program was reviewed by the inspecto Specifically, the inspector selected several design change packages and verified the following:
That design changes were controlled by established procedures;
..
That design changes were reviewed and approved in accordance with the requirements of 10 CFR 50.59; That operating procedures and drawings were updated in a timely manner to reflect the modification; The following design change packages were reviewed:
DC 84-14 RHR Heat Exchanger Support Modification, Surry 2 DC 84-15 RHR Heat Exchanger Support Modification, Surry 1 DC 85-01 Equipment Qualification-Vital Bus Fuse Installation, Surry 2 DC 85-14 Fuel Assembly Reconstitution, Surry 1/2 No violations or deviations were identifie.
Licensee Plans For Coping With Strikes (92709)
On May 2, 1986, the inspector reviewed contingency plans with plant management in the event that a threatened IBEW strike materialized. Extra operations and management personnel were placed on shift, and food supplies were brought i A tentative agreement was subsequently reached and no strike actually occurre.
Licensee Event Report (LER) Review (92700)
The inspector reviewed the LERs listed below to ascertain whether NRC reporting requirements were being met and to determine the appropriateness of corrective actions taken and planne Certain LERs were reviewed in greater detail to verify corrective action and determine comp 1 i ance with the TS and other regulatory requirement The review included examination of the logbooks, internal correspondence and review of Station Nuclear Safety and Operating Committee meeting minutes and discussion with various staff member (CLOSED) LER 281/85-10 concerned an event initiated from the loss of Vital Bus 2-I, which caused a Nuclear Instrument System Dropped Rod Turbine Runback to approximately 48 percent powe In order to restore power, Vital Bus 2-I was crosstied with energized Vital Bus 2-II Series breakers 24 H-11 for Bus 2 H-I and breaker 4B for Vital Bus 2-I Sola transformer were found tripped. Tripping of either breaker would have caused a loss of Vital Bus 2-Both busses were examined for e 1 ectri ca 1 fa i 1 ures and none were foun During a subsequent outage, breaker 24 H-11 and 4B were replace In addition, breakers 24 H-11 and 24 H-16 were tested satisfactorily and breaker settings were found to be within specifications. Breaker 4B was examined and no problems were foun *
(CLOSED) LER 281/85-11 concerned the automatic start of the No. 2 Emergency Diesel Generator during testing of the newly installed watt and var meters in the local control pane The design change procedure failed to give adequate instructions for testing the meters in that a precaution was not included to place the local diesel selector switch to the local start position to prevent any automatic start. The 11automatic/exercise 11 switch in the main control room had been placed in the 11 exercise 11 position to prevent unwarranted automatic diesel start Then an undervoltage signal was induced in the diesel start circuitry by pul 1 ing the undervoltage fuse When control and indication for the EOG was manually transferred from the control room to the local control panel, the automatic start block was removed from the diesel start circuitry and the EOG automatically started due to the simulated undervoltage signa Control of the No. 2 EOG was transferred back to the main control room panel and the diesel was shutdow After the cause of the auto start was determined, procedures were changed, and the test was successfully complete (CLOSED) LER 280/85-15 concerned a reactor trip as a result of 2/3 low flow signal on RCS loop An operator in containment had inadvertently struck the loop flow sensing line with his air pack, which resulted in generating spurious low flow signals and the reactor trip. Operators were reminded to use extra caution when working near sensitive equipment that, if disturbed, could cause a plant transien Resident Inspector Safeguards Inspection (71707)
In the course of monthly activities, the inspector included a review of the licensee 1s physical security progra The performance of various shifts of the security force was observed in the conduct of daily activities to include: protected and vital areas access controls; searching of personnel, packages and vehicles; badge issuance and retrieval; escorting of visitors; patrols and compensatory posts.