IR 05000361/1983023
| ML20024C358 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/24/1983 |
| From: | Eckhart J, Kirsch D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML20024C347 | List: |
| References | |
| 50-361-83-23, 50-362-83-22, NUDOCS 8307120551 | |
| Download: ML20024C358 (6) | |
Text
i U. S. NUCLEAR REGULATORY COMMISSION
REGION V
Report Nos.
50-361/83-23, 50-362/83-22 Docket Nos.
50-361, 50-362 License Nos.
Southern California Edison Company P. O. Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Facility Name:
San Onofre Nuclear Generating Station, Units 2 and 3 Inspection at:
San Onofre Site, San Clemente, California Inspection conducted:
May 9-13 and May 31-June 3, 1963 Inspector:
- _/-_
/-/r#//.5'
J.
. Eckhardt, Reactor Inspector Dite Signed Approved by:
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[-/F#'/fB D
F. Kirsch, Inief, Reactor Projects Date b3gned ection No.3, Reactor Projects Branch No.2 Summa ry:
Inspection on May 9-13 and May 31-June 3, 1983 (Report Nos. 50-361/83-23 and 50-362/83-22)
Areas Inspected: Routine, unannounced inspection by a regional inspector of the maintenance program, onsite review committee meeting, observations of Unit 2 control room, Unit 2 emergency lighting, and measuring and test equipment program. The inspection involved 60 inspection-hours by one NRC inspector.
Results: No items of noncompliance or deviations were identified.
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DETAILS i
1.
Persons Contacted
- D. Fogarty, Executive Vice President
- H. B. Ray, Station Manager
- J. M. Curran, Manager, Quality Assurance
+*J. J. Wambold, Maintenance Manager
+*W. C. Moody, Deputy Station Manager
+*D. B. Schone, Site QA Manager
+*P. A. Croy, Compliance and Configurations Control Manager
+*B. Katz, Technical Manager
- H. G. Morgan, Operations Manager
+*C. R. Horton, Startup QA Supervisor
+*R. N. Santosuosso, Instrumentation and Control Supervisor
+*K. A. Slagle, Startup Maintenance Manager
+*J. S. Iyer, Lead Compliance Engineer
+*M. P. Short, Manager, Project Support
+*M. A. Wharton, Engineering Supervisor
- S. W. Stilwagen, Plant Maintenance Supervisor
+M. E. Rodin, Compliance Engineer
+G. T. Gibson, Lead Technical Compliance
- L. I. Mayweather, Compliance Engineer
- S. W. McMahan, Maintenace Engineering Supervisor
+E.
Prabhu, Project Engineering
- C. L. Brandt, QA Engineer
+R. Borden, QA Engineer T. Gray, QA Engineer R. A. Joyce, Ga.,ap Leader Maintenance Support
+P. H. Penseyres, STA Supervisor R. O'Neal, Test Engineer G. Johnsoa, QA Engineer
- Denotes taose persons attending the exit meeting on May 13, 1983. Also present at the exit meeting was J. P. Stewart, Resident Inspector.
+ Denotes those persons attending the exit meeting on June 3, 1983. Also present at the exit meeting was A. E. Chaffee, Senior Resident Inspector and D. F. Kirsch, Section Chief.
2.
Maintenance Program a.
Review of Wsrk Order-CREACUS Fan Motor The Unit 2 control room emergency air cleanup system (CREACUS) fan motor ME-419 (manufactured by Reliance) was replaced in April, 1983 due to a low insulation reading. The work was documented on Work Order 25791 and Nonconformance Report G-076.
Also, the licensee wrote a Licensee Event Report (LER 83-030) concerning the ground on the fan motor. The licensee's preliminary analysis attributed the ground on the fan motor to oil on the windings from grease used to lubricate the motor bearings. The LER indicated that the failed motor had been fitted with sealed bearings which do not require periodic greasing. The LER further indicated that the preventative
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maintenance program specified periodic greasing which resulted in grease being pumped into the motor housing and the subsequent low insulation resistance. NCR G-076 indicated that the replacement motor was equipped with sealed bearings and the grease fittings should be removed and plugged. The NCR indicated the work was completed on May 5, 1983. After review of the work order and NCR, the inspector questioned the licensee regarding the types of bearings installed in other Reliance motors in this system and whether or not the bearings should be greased. The inspector noted that the Reliance motor bearings were scheduled annually for greasing per Maintenance Procedure S023-I-8.63.
The inspector was concerned that if the other Reliance motors were equipped with sealed bearings, the same cause of grounding may exist as was attributed to motor ME-419. The licensee committed to determine the type of bearings installed in the other motors.
As a result of this evaluation, the licensee determined that the failed motor (ME-419) that was removed, was actually equipped with double sleeved bearings instead of sealed bearings as was originally reported. The Reliance technical manual for these motors (Instruction Manual B-3620-8) also specifies that motors of the ME-419 frame type are equipped with double sleeved ball bearings and specifies a suggested lubrication procedure and frequency.
Therefore, it is suspected that the new motor installed is actually equipped with double sleeved ball bearings, the motor should be equipped with grease fittings, and the bearings should be periodically greased. The licensee has committed to positively determine the type of bearings installed in all of the motors so that the correct lubrication requirements can be assured. Also, the licensee has sent the failed motor to Reliance to determine the actual cause of the ground. The LER will be modified as necessary to reflect the additional evaluation. This item will be further examined after the licensee completes the evaluation (50-361/83-23/01).
No deviations or violations were identified.
b.
Review of Preventative Maintenance Data, HPSI Pump ITE Breakers The most recent preventative maitenance (PM) records for ITE breakers for the Unit 2 HPSI pumps were reviewed. The breaker numbers are 2A0408 associated with HPSI pump P17, 2A0409 and 2A0609 associated with P18, and 2A0608 associated with P19. The PM was performed using Maintenance Procedure S023-I-4.5.
The inspector verified that the performance requirements of this procedure agreed with those given in ITE Technical Manual IB-8.2.7-2, Issue 4, " Metal Clad Switchgear, SKv Power Circuit Breakers Type 5HK75, 5HK150, 5HK250, and SHK350."
No deviations or violations were identified.
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c.
Comparison of Maintenance Procedure with Vendor Technical Manual, Containment Spray and LPSI Pumps The inspector performed a detailed comparison of station maintenance Procedure MPMG-069, " Maintenance Procedure for Containment Spray and LPSI Pumps," and Ingersoll-Rand Instruction Manual for the 8x23WDF Containment Spray and 8x20WDF LPSI Pumps (SCE Log No. S023-933-61-7). The purpose of the comparison was to ensure that the requirements of the vendor technical manual were included in the maintenance procedure. The pump disassembly, inspection, repair, and reassembly procedures were compared. The maintenance procedure agreed with the technical manual in all areas including step details and sequence, cautions, torque values, and spare parts list. The only difference between the procedures was that in particular steps the maintenance procedure was clarified in both wording and format.
No deivations or violations were identified.
d.
Review of QA Audits of Maintenance Program The inspector reviewed Startup QA audit reports of recently performed audits of the maintenance program. The reports were as follows:
1)
SCE-SU-1-83 performed February 7-11 and 16-19,1983. The purpose of this audit was to verify the programmatic implementation of the startup and station maintenance program with respect to Criteria II and V of 10 CFR 50, Appendix B.
Six corrective action requests (CAR) were generated during the audit.
2)
SCE-SU-03-83 performed April 4-8, 1983. This audit was performed to assure the maintenance program is in compliance with Criterias V, VII, VIII, XI, and XVII of 10 CFR 50, Appendix B.
Four CARS were generated during this audit.
3)
SCE-SU-07-83 performed April 7-21, 1983. The purpose of this audit was to verify the implementation of the startup maintenance program with respect to SCE Test Instructions 24 and 33.
Four CARS resulted from this audit.
The audit reports indicated that the audits were comprehensive, adequately conducted, and resulted in valuable findings. The inspector encouraged the licensee to continue audits and surveillances of the maintenance area.
No deviations or violations were identified.
3.
Onsite Review Committee (OSRC) Meeting The inspector attended the portion of the May 10, 1983, OSRC meeting that delt with the May 9, 1983, Unit 2 reactor trip which was precipitated by
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an electrical ground on Channel B of the DC power supply. The committee reviewed and evaluated the cause of the reactor trip. The inspector observed that the meeting was conducted in accordance with the administrative procedures of Station Order S0123-G-1.
No deviations or violations were identified.
4.
Observations of Unit 2 Control Room On May 11, 1983, the inspector observed Unit 2 operations from the control room. The plant was at 50 percent power during this period.
During the tour, both steam generator blowdown high radition alarms actuated. The operators did not respond in a manner that the inspector
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considered timely for these alarms. Finally, after several minutes, the operators determined by the secondary water activity meter readings in the secondary chemistry laboratory that the blowdown radiatien alarms were spurious. Also, there were no other indications of a steam generator tube leak or rupture. Subsequently, the inspector determined that these alarms had a history of alarming spuriously and had been placed on the " spurious alarm form" on February 15, 1983. A work order concerning the alarms was finally written on May 11, 1965, after the alarms had occurred. The inspector discussed this situation with the station management, emphasizing the need for operators to appropriately
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respond to alarms even though they may have a history of being spuricas.
The station managemnet acknowledged the need for proper and timely operator response to alarms, and also discussed the program of correcting the large number of annunciators that are affixed with out of commission or work order request stickers.
No deviations or violations were identified.
5.
Observation of Emergency Lighting Test The NRC issued an item of noncompliance (50-361/83-19-02) concerning inadequate Unit 2 emergency lighting. As a result of the item of noncompliance, additional eight-hour battery pack lighting was added in the control building stairwell, main steam isolation valve (MSIV) area, diesel generator building, electrical penetraion area, cable riser area, and auxiliary feed pump area The controlling document for these changes was Design Change Package 624n. On June 1, 1983, the inspector observed testing of these added lights to ascertain the adequacy of emergency lighting in the specific areas. Certain of the areas, notably the MISV area, and outside areas to the diesel generator and auxiliary feed pump buildings were not tested; however, the inspector observed the location of the additional emergency lighting in these areas and it appeared as if this new lighting would be adequate. Of the areas tested, the electrical penetration area passageway from the door of the cable spreading area to the door leading to the MSIV area appeared to need additional emergency lights. There are low hanging cable tray supports in this area which are a potential hazzard with the present emergency lighting. This item will remain open until the concern i:2 the penetration area is corrected and i
the remaining tests (of the outside areas) are successfully completed.
No additional deviations or violations were identified.
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6.
Review of Measuring and Test Equipment Calibration Program The inspector reviewed the following procedures governing the M&TE calibration program:
Test Instruction 15, M&TE Control.
- Maintenance Procedure S023-I-1.5, Calibration and Control of
M&TE.
The purpose of the review was to ascertain that'the following attributes were contained in the procedures:
Specified list of all M&TE.
Required M&TE to be traceable to National Bureau of Standards.
- Specified calibration procedure for those items for which the
calibration is performed onsite.
Specified calibration stickers required to be affixed to all
M&TE.
- Specified all M&TE required to have identification.
- Specified interval of calibration and allowed for changing interval depending on history.
- Specified a recall program.
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Specified instructions for handling out of calibration items.
The inspector determined that these attributes were in fact contained in the procedures.
No deviations or violations were identified.
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7.
Exit Meeting The inspector met with licensee representatives (denoted in paragraph 1)
on May 13 and June 3, 1983, and discussed the scope and findings of the inspection.
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