ML20092H830

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

ML20092H830
Person / Time
Site:	Catawba
Issue date:	02/12/1992
From:	Tuckman M DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9202210375
Download: ML20092H830 (2)

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tw Co: cord Roud (M0Kf/JJai O'r ce s hd, SC ?$in (HXfi0).11:6 lA s DUKE POWER February 12, 1992 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station, Un'.t 2 Docket No. 50-414 Twenty-first Quarterly Update to Startup Report In accordance with Section 6.9.1.3 of the Catawba Nuclear Station Technical Specifications, find attached the twenty-first quarterly update to the Unit 2 Startup Report.

As indicated in my Ncvember 13, 1991 letter, one test is not complete. Additional quarterly updates to the Startup Peport will be submitted as required by the Technical Specifications.

Very truly yours, e

.C dv-M. S. Tuckman Vice President CRU21STUPSR Attachment xc: S. D. Ebneter Regional Administrator, Region 11 R. E. Martin, ONRR W. T. Orders Senior Resident Inspec tor 9202210375 920212 gDR ADOCK 05000414 PDR u-,~,._

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, STARTUP REPORT QUARTERLY UPDATE

, CATAWilA UNIT 2 CYCLE 1 February 12, 1992 TESTING COhiPLETED DURING OUARTER None.

STATUS OF TESTING NOT COMPLEIE STEADY STATE PIPING SYSTEMS OPERATIONAL VIBRATION MEASUREh!ENT -

TP/2/A/1200/21 This test was described in Sections 10.5 and 11.5 in the Startup Report. It is complete except for retesting of piping associated with the Diesel Generator Fuel Oil and Lube Oil systems, Additional restraints were installed during the EOC-1 refueling outage, liowever, further modifications were found to be necessary, Those modifications involved the replacement of rigid piping with flexible piping, Vibration testing following completion of the modificatio.? indicated that overall vibration levels had been reduced. Ilowever, vibration levels in isolated portions of the piping still exceed allowable criteria. These levels were evaluated and found to not constitute an imminent danger of failure.

To resolve these isolated problems, modifications are planned which will result in a piping configuration similar to Unit 1 The modifications include replacement of non-standard fittings with standard fittings, deletion of unnecessary flanges, and valve relocation. These modifications were previously scheduled to be completed in the Unit 2 EOC4 refueling outage, It was later determined that an NSM (Nuclear Station Modification) was required due to the extent of the modifications. The design work for this NSM (CN 20659) is complete. The design work for the NSM resulted in a change to the modification that will allow the work to be done without an outage Implementation should be completed during the second quarter cf 1992, y- _e & F w