ML20205J098

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Forwards Questions Transmitted on 990405 to G Gilbert of Duke Energy Corp to Prepare for Upcoming Telephone Calls
ML20205J098
Person / Time
Site: Catawba Duke Energy icon.png
Issue date: 04/05/1999
From: Tam P
NRC (Affiliation Not Assigned)
To:
NRC (Affiliation Not Assigned)
References
TAC-M72400, NUDOCS 9904090167
Download: ML20205J098 (2)


Text

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20556-0001 o

o 3y# April 5,1999 MEMORANDUM FOR: Docket File .

FROM: Peter S. Tam, Senior Project Manager, Sect %1

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Project Directorate 11 / e

, m Division of Licensing Project Management Office of Nuclear Reactor Regulation

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SUBJECT:

CATAWBA NUCLEAR STATION, UNIT 1 - FACSIMILE TRANSMISSION, ISSUES TO BE DISCUSSED IN AN UPCOMING PHONE CONVERSATION ON STEAM GENERATOR INSPECTION (TAC M72400)

The attached qLestions were transmitted by fax today to Mr. Gary Gilbert of Duke Energy

, Corporation (DEC) to prepare him and others for an upcoming telephone call. This 1

memorandum and the attachment do not convey a formal request for information or represent un NRC staff position. .

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l Docket Numbers 50-413

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9904090167 990405 PDR ADOCK 05000413 l P PDR <

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E Steam Generator Tube inspection Results Lite' sees' steam generator (SG) tube eddy current (EC) inspections play a vital role in the management of SG tube degradation. The results are used to demonstrate adequate structural and leakage integrity of the SG tubes.

NRC staff is interested in' discussing the licensee's steam generator inspection plans and results, although the licensee is not required to participate in this discussion. The following list of topics describes areas the NRC staff typically is interested in talking about.

Primary-to-secondary leakage prior to shutdown j l

Results of secondary side hydro For each steam generator, a general description of areas examined; include expansion criteria and type of probo used in each area For analyzed EC results, describe bcbbin indications (those not examined with RPC) and RPC/Plus l Point /Cecco indications. Include the following information: location, number, degradation mode, disposition, and voltages / depths / lengths of most significant indications. j l

Describe repair / plugging plans Discuss previous history; "look backs" performed Discuss new inspection findings Describe in-situ pressure test plans and results, if available: include tube selection criteria Describe tube pull plans and preliminary results, if available; include tube selection criteria Assessment of tube integrity for previous operating cycle Assessment of tube integrity for next operating cycle Provide schedule for steam generator-related activitYs during remainder of current outage Note: Simple tables and figures may be used to facilitate the discussion.

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