ML20011D480
| ML20011D480 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 12/20/1989 |
| From: | Withers B WOLF CREEK NUCLEAR OPERATING CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| WM-89-0275, WM-89-275, NUDOCS 8912270308 | |
| Download: ML20011D480 (3) | |
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W6) NUCLEAR OPERATING C LF CREEK set o. wwwe gg, December 20, 1989 WM 89-0275 U. S. Nuclear Regulatory Conunission ATTH:
Document Control Desk Mail Station P1-157 Washington, D. C.
20555
Reference:
Letter dated November 20, 1989 from S. J. Collins, NRC, To B. D. Withers WCNOC h
Subject:
Docket No. 50-482:
Response to Violation 482/8927-01 Gentlemen:_
Attached is Wolf Creek Nuclear Operating Corporation's (WCNOC) response to violation 482/8927-01, which was documented in the Reference.
Violation 482/8927-01 involved the failure to properly perform an Essential Service Water surveillance requirement.
If you have any questions concerning this matter, please contact me or Mr. O. L. Maynard of my staff.
l Very truly yours, Bart D. Withers President and i
Chief Executive Officer BDW/aem Attachment cc:
B. L. Bartlett (NRC), w/a E. J. Holler (NRC), w/a R. D. Martin (NRC), w/a D. V. Pickett (NRC), w/a 8912270308 891220 FDR ADOCE 05000482 U
PDC 4
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P.O. Box 411/ Burtengton, KS 66639 / Phone: (316) 364-8831 An (quel opporturwty Employer MEhC/ VET l
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Attachment to WH 89-0275 Page 1 of 2 Violation (482/8927-01):
Technical Specification Surveillance Reauirement Imoronerly Performed Findinn
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Technical Specification (TS) Surveillance Requirement 4.6.2.3.a.2,
' Containment Cooling System,' requires, in part, that each group of I
containment cooling fans shall be demonstrated operable at least once per 31 I
days by verifying a cooling water flow rate of greater than or equal to 2200 gpm to each cooler group.
TS Basis 3/4.6.2.3 states, in part, the operability of the containment cooling system ensures that the containment air temperature will be maintained within limits during normal-operations.
Contrary to the above, the licensee's test procedure performed from July 9, 1987, through June 2, 1989, was unable to achieve 2200 gpm flow through the j
normal valve lineup and required that the post loss of_ coolant accident 1
(LOCA) lineup be in place in order to achieve the required normal flow.
This is a Severity Level IV violation.
(Supplement I)(482/8927-01)
Reason For Violation:
During the period March, 1985, through June, 1989, various combinations of pumps in operation and valve lineups were utilized to satisfy TS Surveillance Requirement 4.6.2.3.a.2.
The combinations used were not viewed as abnormal lineups.
Consequently, it was assumed that these system configurations satisified the intent of the TS Surveillance Requirement.
Each change in the testing methodology was reviewed and approved in accordance with normal station practices. Throughout this time period, the containment air temperature was maintained within-limits, during normal operations as discussed in TS Basis 3/4.6.2.3.
I TS Basis 3/4.6.2.3 states, in part, the operability of the containment l
a cooling afstem ensures that the containment air temperaturn will be maintained within limits during normal operations.
The intent of this basis i
is to ensure that degrading flow conditions are properly evaluated; even though accident requirements and normal operating requirements are satified.
Corrective Steos Which Have Been Taken And-Results Achieved On June 2, 1989, the surveillance procedure utilized to fulfill TS Surveillance Requirement 4.6.2.3.a.2 was revised to utilize the normal service water pump flow through the normally open bypass valves (EF HV-47 and -48).
Should other lineups be required to satisfy the required flow, a formal evaluation will be initiated of the condition of the containment coolers. As stated in Inspection Report 482/8927, this method of testing clearly satisfies the intent of this Surveillance Requirement.
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t-Attachment to WM 89-0275 Page 2 of 2 Corrective Steos Which Will Be Taken To Avoid Further Violations:
WCNOC personnel recently completed a detailed review of TS Surveillance Requirements to ensure that each item is properly addressed in surveillance procedures.
Therefore, there is a high, degree of confidence that all other TS required surveillance testing is being performed in a manner consistent with the intent of the TS requirement.
Date When Full Comoliance Will Be Achieved:
Full compliance has been achieved.
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