ML20154L039
| ML20154L039 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 09/16/1988 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8809260082 | |
| Download: ML20154L039 (3) | |
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DUKEPOWER l
i September 16, 1988
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1 U. S. Nuclear Regulatory Comunission Washington, D. C.
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Attention: h contee8'Mw l
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Subject:
Catawba Nuclear Station Units 1 and 2 l
Docket Nos. 50-413 and 50-414 i
NRC Inspection Reports Nos. 50-413. -414/88-25 Reply to a Notice of Violation i
l Gentlemen:
Please find attached Duke Power Company's response to Severity level V violation
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No. 50-413. -414/88-25-01 which was transmitted by V. L. Brownlee's (NRC) letter-f dated August 19, 1988. This violation was caused by the failure to maintain t'.s operable channels of valve position indication for the Pressurizer PORV block i
valves.
Very truly yours,
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Hal B. Tucker l
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r Attachment xc Dr. J. Nelson Grace, Regional Administrator
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U. S. Nuclear Regulatory Commission
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Region II i
101 Marietta Street, NW, Suite 2900 f
Atlanta, Georgia 30323 j
i Nr. P. K. Van Doorn f
NRC Resident Inspector j
Catawba Nuclear Station j
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DlTKE POWER COMPANY CATAWRA NUCLEAR STATION VIOLATION 411. 414/88-25-01 I
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Technical Specification 3.3.3.6 requires that the accident monitoring channels as t
shown in Table 3.3-10 be operable. The Action Statement specifies that with the number of operable accident monitoring instrumentation channels less than the Total Number of channels shown in Table 3.3-10. restore the inoperable channel (s) to operable status within 7 days, or be in '
'st hot standby within the noxt 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in hot shutdown within the follow.... O hours.
Table 3.3-10 shows the Total Number of channels required for PORV Block Valvo Position Indicator as t
2/ valve on Unit 1 and prior to May 27, 1988 as 2/ Valve on Uait 2.
l Contrary to the above the licensee failed to maintain two operable channels por
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valve for PORV Block Valvo Position Indicators from initial licensing until May l
l 20, 1988 and failed to comply with the Action Statement.
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Admission or Denial of the Violation Duke Power admits the violation.
kcason for the Violation if Admitted t
This Violation was attributed to a management deficiency due to an inconsistency in Technical Specification requircaents and plant design.
During tne review of j
standard Technical Specifications to ensure that the design for PORV and PORY Block Valve Position Indicatiuon occured with Catawba Technical Specifications, l
an oversight was made.
Corrective Steps Which Have Been Taken and the Results Achieved i
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1.
Temporary Station Modification (TSM) 9732IAE was initiated which installed i
jumpers from the Unit 1 test patch panel to the Operator Aid Copnputer (OAC) 1 to provide an independent position indication and to facilitate performance f
of surveillances on the Unit 1 PORY block valves. This modification j
satisfied the requirements of two independednt channels of PORV Block Valve J
Indication on Unit 1.
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An Emergency Technical Specification change was issued by the NRC on May 27, i
t 1988 to allow Unit 210RV block valve indication requirements to be revised
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from 2/ valve to 1/ valve. This Emergency Technical Specification change was issued to preclude significant delays for the restart of Unit 2.
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3.
A Technical Specification interpretation was issued for Technical l
1 Specification 3.3.3.6.
This interpretation describes the dif ferences between the two units and the approach to use in the event of position indication l
inoperability.
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A Technical Specification amendment request was sent to the NRC on July 11, i
1988 to further clarify the requirements for PORV Block Valve Position I
Indication.
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The Operations Periodic Test Procedures (Unit 1 and Unit 2) for Monthly Surveillance Items, were revised to reflect proper channel checks for the PORVs and PORV block valves.
6.
All Compliance members have been reminded of the need to include all IFIs, URIs or Violation followup items on the Catawba Commitment List until completion.
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Station Management is being provided monthly sunmaries of the Commitment List 5
items identifying the total number of commitment items by group, which are I
past due. A letter, from the Station Manager, providing further control over i
the ortension of Commitment dates and the intent to complete items as scheduled has been distributed to the Group Superintendents and Section Heads.
Corrective Steps Which Will Be Taken to Avoid Further Violations i
j Compliance will continue to work closely with the NRC Resident Inspectors on
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any items identified that differ from the strict words in the Technical d
Specifications to provide satisfactory resolution of the problem.
i Datn When Full Compliance Will Be Achieved i
Duke Power is now in full compliance.
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