ML20073M843

Startup Rept Quarterly Update,Catawba Unit 2,Cycle 1. W/

ML20073M843
Person / Time
Site:	Catawba
Issue date:	05/07/1991
From:	Tuckman M DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9105160039
Download: ML20073M843 (2)

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}'!i l; s s f DUKEPOWER May 7,1991 U. S. Nuclear Regulatory Commission NITN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station, Unit 2 Docket No. 50-414 Eighteenth Quarterly Update to Startup Report In accordance with Section 6.9.1.3 of the Catawba Nuclear Station Tecnaical Specifications, find attached the eighteenth quarterly update to the Unit 2 Startup Report.

As indicated in my February 7,1991 letter, one test is not complete. Additional quarterly updates to the Startup Report will be submitted as required by the Technical Specifications.

Very truly yours, N8 V:. 2%

M. S. Tuckman CRU18THUPSR Attachment xc: S. D. Ebneter Regional Administrator, Region II R. E. Martin, ONRR W. T. Orders Senior Resident Inspector 9105160039 910507

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T STARTUP REPORT QUARTERLY UPDATE CATAWBA UNIT 2 CYCLE 1 hiay 7,1991 TESTING COhfPLETED DURING OUARTER None.

STATUS OF TESTING NOT COhfPLETE STEADY STATE PIPING SYSTEhtS OPERATIONAL VIBRATION h1EASUREh1ENT -

TP/2/A/1200/21 This test was described in Sections 10.5 and 11.5 of the Startup Report. This test is complete except for retesting the piping associated with the Diesel Generator Fuel Oil and Lube Oil Systems. Additional restraints were installed during the EOC-1 refueling outage.

However, further modification was found to be necessary. This modification involved the replacement of rigid piping with flexible piping. Vibration testing following completion of the modification indicated that overall vibration levels had been reduced. However, vibration levels in isolated portions of the piping still exceeded the allowable criteria.

These levels were evaluated and found to not constitute aa. imminent danger of failure. To resolve these isolated problems, modifications were planned which will result in a piping configuration similar to Unit 1. These modifications include the replacement of non-standard - fittings with - standard Ettings, deletion of unnecessary flanges, and valve relocation. Due to the extent of these modifications, work requests have been issued to perform these modifications during the Unit 2 EOC 4 refueling outage scheduled for the fourth quarter of 1991.

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