ML20246K893

Ro:On 890314,discovered Error in Scheduling & Actual Performance of Surveillance Requirement 4.6.1.3 Re Testing for Personnel & Emergency Air Locks.Caused by Oversight. App J Exemption Request Submitted & Test Interval Changed

ML20246K893
Person / Time
Site:	Davis Besse
Issue date:	07/14/1989
From:	Storz L, Stotz J TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KA89-40017, NUDOCS 8907180293
Download: ML20246K893 (4)

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TOLEDO 1 EDISON r

July 14, 1989 . Log No.: KA89-40017 NP-33-89-006 L

w Docket.No. 50-346 ^

License No. NPF-3 United States Nuclear Regulatory Commission Document Control Desk ,

Washington, D. C. 20555 Gentlemen:

i Davis-Besse Nuclear Power Station, Unit No. 1 Date of Occurrence - March 14, 1989

-Enclosed is a Voluntary Report which is being submitted per NUREG-1022, Supplement 1.

Yours truly, d.

M&n '

Louis F. Storz-Plant Manager Davis Besse Nuclear Power Station LFS/p1g Enclosure cc: Mr. A. Bert Davis.

Regional Administrator USNRC Region III Hr. Paul Byron DB-1 NRC Resident Inspector B907180293 890714 P PDR ADDCK 05000346 S PNU

((2. 2, THE TOLEDO ED! SON COMPANY EDtSON PLAZA 300 MADISON AVENUE TOLEDO OHIO 43652 /

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NRC Form ans ' U.S. NUCLEAM KECULATESY COMMitBIOes

, APPROYED OMt NO 3191LO104 LICENSEE EVENT REPORT (LER) (KPIRE81/2W 71CILITY NAME (18 DOCKET NUMBER t!) PAGE(3)

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i On March 14, 1989, as a result of a Technical Specification Verification Program review meeting, it tas recognized that the scheduling and actual performance of the Surveillance Requirement 4.6.1.3 testing for the Personnel ]

, and the Emergency Air Locks was in error. The Technical Specifications

l. allowed the use of Surveillance Requirement 4.0.2 which allovs'the 1.25/3.25 criterion to be used. This allowed stretch was used. 10CFR50, Appendix J l does not address the use of test interval stretches. The difference vas an apparent oversight then the Technical Specifications were originally submitted I to the NRC. Toledo Edison should have submitted a specific exemption to the  ;

NRC. There is no afety significance to this finding. The basic test .

, intervals are maintained. The test interval was reduced on March 14, 1989, to j l assure compliance >ith Appendix J. Teshnical Specification Surveillance Requirements were reviewed to identify any other conflict in frequency requirements between Technical Specifications and other regulations. No other such conflicts were found. An exemption to Appendix J vas submitted on July 5, 1989.

This is being submitted as a Voluntary Report.,

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LICENSEE EVENT REPORT (LER) TEXT CONTINUATION amoveo ous No. siso-om exma s. siain F ACILITY NAME til DOCKET NUMBER (21 ggg gygggg(g) PAGE (3) vsaa " W J'.',' 4'J#.?R I

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Description of Occurrence:

On March 14, 1989, as a result of a Technical Specification Review Pregram l review meeting, it'vas recognized that the scheduling of the Surveillance Requirement 4.6.1.3 testing for the Personnel and Emergency Air Locks was in error. The scheduling system was using the . surveillance Requirement.4.0.-2 which allowed 1.25/3.25 stretch when determining Technical Specification late dates. 10CFR50, Appendix J, does~not include the use of test interval stretches,. - Toledo Edison had not applied for an exemption to the code requhement to allow the use of Technical Specification 4.0 2. However, .

Surveillance Requirement 4.6.1.3 does allow the use of Surveillance Requirement 4.0.2, as written. Therefore, Toledo Edison has been using Surveillance Requirement 4.0.2 for scheduling and actual test performance without having received an approved exemption from the NRC, This 'linding is being submitted as a Voluntary Report.

Apparent Cause of Occurrence:

The air lock testing has been scheduled this way since startup of the plant in 1977. The scheduling system uses 4.0.2 for this test requirement because Technical Specification 3.6.1.3, as written, allows it. The oversight occurred when the Technical Specifications were originally written. Toledo Edison should have submitted a specific exemption request with the submittal of the Technical Specifications.

l Analysis of Occurrence:

There is no safety significance to this finding. Surveillance ~ Requirement 4.0.2 provides a reasonable scheduling tool which limits the amount of extension between any two tests to 25 percent of the test interval and also no more than a total of 25 percent stretch over three t'onsecutive test intervals.

For a six-month test interval, the stretch allowed would be 1.5 months, which has no significance in relation to LOCA frequency and other post-accident impact.

Correcti.e Actions The test interval for S1 5061.02, the six-month test # air locks, was changed by March 14, 1989, to eliminate the use of SurveillaM P2quirement 4.0.2.

l A review of thr, Technical Specification Surveillance Requirements has been l I

conducted to identify any other conflicts in frequency requirements between Technical Specifications and other regulations. The only discrepancy identified was between Surveillance Requirement 4.6.1.3.a r.nd b and Appendix J l of 10CFR50, the subject of this rtuort.  !

1 An exemption to Appendix J was subs.it ted to the NRC on July 5,1989, to justify use of Surveillance Requirement 4.0.2.

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Failure Datat This is the first report of Technical Specification Surveillance Requirement, as written, not being in compliance with the codes that they were intended to i meet.

1 REPORT NO: NP 33-89-006 PCAO NO: 89-0150 N#C eORU 3ase 9 43:

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