ML20096D915

Twenty-Second Quarterly Update to Startup Rept,Catawba Unit 2,Cycle 1

ML20096D915
Person / Time
Site:	Catawba
Issue date:	05/07/1992
From:	Tuckman M DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9205180307
Download: ML20096D915 (2)

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l May 7,1992 l

l U. S. Nuclear ILgulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station, Unit 2 Docket No. 50-414 Twenty-second Quarterly Update to Startup Report In accordance with Section 6.9.1.3 of the Catawba Nuclear Station Technical Specifications, find attached the twenty-second quarterly update to the Unit 2 Startup Report. Additional quarterly updates to the Startup Report will be submitted as required by the Technical Specifications.

Very truly yours,

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N . 3.rkCb_ '

M. S. Tuckman CRT /22STUPSR Attachment xc: S. D. Ebneter Regional Administrator, Region II R. E. Martin, OhRR W. T. Orders Senior Resident inspector i

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I STARTUP REPOPT QUARTERLY UPDATE CATAWBA UNIT 2 CYCLE 1 May 7,1992 TESTING COMPLETED DURING OUAl[ffR The 2B Diesel Generator piping was modined and tested. Vibrati ',a levels on the 2B Diesel Gererator now meet the acceptance triteria.

STATUS OF TESI[NG NOT COMPLE(i STEADY STATE PIPING SYSTEMS OPERATIONAL VIBRATION MEASUREMENT -

TP/2/A/1200/21

Background

This test was described in Sections 10.5 and 11.5 in the Startup Report. It is complete except for retesting of piping ascociated with the Diesel Generator Fuel Oil and Lube Oil systems. Additional restraints wure installed during the EOC-1 refueling outage.

-However, further modifications were found to be necessary. Those rnodifications 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, vibmtion levels in isolated portions of the piping still exceed allowable criteria. These levels were evaluated and found to not constitute an imminent danget of failure. To resolve these isolated problenis, modifications are planned which will result in a piping configuration similar to Unit 1. The modifications include ;ept ement of ncn-standard fittings with standard fittings, deletion of unnecessary flanges, and valve relocation.

Status NSM (Nuclear Statio: Modification) CN-20659 is complete for Diesel Generator 2B.

Vibration levels are within allow.ble limits. The same modification is currently scheduled

'r be performed on 2 A Diesd Generator on May 26,1992.

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