ML20198R596
| ML20198R596 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 04/22/1986 |
| From: | Koester G KANSAS GAS & ELECTRIC CO. |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20198R589 | List: |
| References | |
| KMLNRC-86-068, KMLNRC-86-68, NUDOCS 8606100134 | |
| Download: ML20198R596 (4) | |
Text
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n KANSAS GAS AND ELECTRIC COMPANY THE ELECTF*C COPAMNY aoa~~t oesTra April 22, 1986 vlCE PAF5sDENT - f*vCLE AR Mr. E. H. Johnson, Director 3 @ B D W {R %
Division of Reactor Safety and Projecte U.S. Nuclear Regulatory Commission Region IV IN -5 W 611 Ryan Plaza Drive, Suite 1000 J
Arlington, Texas 76011 su..ny, n KMLNRC 86-068 Re:
Docket No. STN 50-482 Subj:
Response to Inspection Report STN 50-482/85-42
Dear Mr. Johnson:
This letter is written in reponse to your letter of March 24, 1986, which transmitted Inspection Report STN 50-482/,85-42.
As requested, the deviation (482/8542-01) identified in the Inspection Report is being addressed in four parts.
(a) The reason for the deviation if admitted; (b) The corrective steps which have been taken and the results achieved; (c)
Corrective steps which will be taken to avoid further deviations; and (d) The date when full compliance will be achieved.
t 8606100134 860604 PDR ADOCK 05000482 G
PDR Deviation (482/85 42-01):
Failure to Implement a Continuous Airborne Monitoring Program Finding:
The Final Safety Analysis Report (FSAR) for the Standardized Nuclear Unit Power Plant System (SNUPPS), Section 12.3.4.2.2.2.9, Portable Monitors, and the FSAR for the Wolf Creek Generating Station (SNUPPS-WC),
Section 12.5.2.1, Health Physics Equipment and Instrumentation, establish a commitment to use continuous airborne radioactivity monitors (CAMS) as a primary means of measuring and trending airborne radioactivity concentrations within plant areas.
In deviation from the above, the NRC inspectors determined on December 10, 1985, that the licensee had no CAMS in operation and that CAMS had not been routinely used.
(482/8542-01) 201 N. Market - Wichuta, Kansas - Mail Address: PO. Box 208 i Wichita, Kansas 67201 - Telephone: Area Code (316) 261-6451
o Mr. E. H. Johnson KMLNRC 86-068 Page 2 April 22, 1986 Reason For The Deviation If Admitted:
On December 10, 1985, the Continuous Air Monitors (CAM's) located in the Radiological Controlled Area were noted to be inoperable.
This occurrence resulted from numerous operational problems that were encountered since the CAM's were first placed in-service.
The in-service CAM's all experienced out of service periods and due to unforeseen long-term problems, all happened to be out of service on December 10, 1985.
The problems encountered since being placed in service include:
1) improper wiring causing circuit failure
- 2) circuit board failure 3) sample pump failure
- 4) electronic problems preventing data entry
- 5) detector failure
- 6) variant pump flow due to control circuitry problems
- 7) detectors failing percent deviation check
- 8) spurious alarms due to voltage drift
- 9) chart paper drive failures I
Corrective Steps Which Have Been Taken And Results Achieved:
Upon failure, measures were instituted to attempt repairs which included i
circuit board and other component replac ement,
trouble shooting and recalibration.
The supplier was contacted to provide a field service l
technician to assist in the more complicated repairs.
Prior to his arrival, the technician left the supplier's employment. After another delay, a field f
service technician arrived and spent two days in October, 1985 attempting to solve the numerous problems.
A power supply problem believed to be the cause, was identified and corrected by wiring the CAM's to permanent station power with protected circuits.
Other repairs to correct certain control circuitry problems on some CAM's was not accomplished due to the technicians lack of qualification.
Repair attempts continued and were partially successful,
- however, sporadic problems continued.
Repeated attempts to schedule a vendor technician for needed repairs have been made and is now scheduled for early Hay, 1986.
l
(
Mr. E. H. Johnson KMLNRC 86-068 Page 3 April 22, 1986 When increasing problems with maintaining CAM operation were noted, increased frequency of grab air samples in various plant locations was initiated.
In October, continuous low volume air samplers were placed in various plant locations and are still changed and analyzed on a daily basis, regardless of the number of operable CAM's.
Corrective Steps Which Will Be Taken To Avoid Further Deviations:
a) Operable CAM sample pumps have been placed on a preventive maintenance schedule to replace carbon vanes prior to failure.
b) The CAM Supplier has been contacted and will supply a field service technician during early May,1986.
Duc ir.g this time an attempt to develop a trouble shooting index will be made to assist in repair and minimize down time.
In addition the spare parts list will be reviewed and recommended components will be ordered to assist in maintaining CAM operability.
c) Sample locations have been reviewed to assure the minimum number of CAM's required to representatively sample various plant locations are in operation.
This will allow others to be repaired as spares and readied for service should long-term repair work be required.
Date When Full Compliance Will Be Achieved:
With respect to the above response the following dates of completion are anticipated or completed:
3a - Sample pumps were placed on a preventive maintenance schedule recommended by the manufacturer on April 7,1986.
3b - A trouble shooting matrix is anticipated to be developed by May 16, 1986.
3c - Considering.that each CAM can sample up to five locations, a review of sampling areas was completed on March 5, 1986 and the following locations are to be utilized:
1974' Auxiliary Building 2000' Auxiliary Building (North End) 2000' Auxiliary Building (South End) 1976' Radwaste Building 2047' Fuel Building
Mr. E. H. Johnson KMLNRC 86-068 Page 4 April 22, 1986 As of this date the following is CAM operating status:
1974' Auxiliary Building - Operating 2000' Auxiliary Building (North) - Operating 2000' Auxiliary Building (South) - Expected to be Operable by 5/16/86 1976' Radwaste Building - Operating 2047' Fuel Building - Operable for refueling outage scheduled for October, 1986.
If you have any questions concerning this submittal please contact me or Mr.
O. L. Maynard of my staff.
Very truly yours Glenn L. Koester Vice President - Nuclear GLK:see cc: P0'Connor (2)
JCummins JTaylor
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