ML20134N822

From kanterella
Jump to navigation Jump to search

Forwards Message Re Conference Call on SG Tube Insp Results
ML20134N822
Person / Time
Site: Catawba 
Issue date: 02/20/1997
From: Tam P
NRC (Affiliation Not Assigned)
To:
NRC (Affiliation Not Assigned)
References
TAC-M72401, NUDOCS 9702240510
Download: ML20134N822 (2)


Text

...,

~

se Lieu

.p 2'a UNITED STATES g

j NUCLEAR REGULATORY COMMISSION f

WASHINGTON, D.C. 20566-0 M1 o

49*****

,o l

February 20, 1997

)

MEMORANDUM FOR: ' Docket-Filei FROM:

Peter S. Tam, Senior Project Manager Project Directorate II-2 i

Division of Reactor Projects - I/II M

Office of Nuclear Reactor Regulation

SUBJECT:

CATAWBA UNITS 1 AND 2 - PUTTING A DOCUMENT IN THE PUBLIC DOCUMENT ROOM (TAC M72401)

The attached message was faxed today to Mike Kitlan of Duke Power Company.

The sole purpose of the message is to prepare Duke Power Company personnel for a conference call. The message itself does not constitute a formal request for information or represent a formal-NRC staff position.

3

?

Docket Numbers 50-414 i

Distribution PUBLIC H. Berkow John Tsao, 0-7 D4 hf hh,l'

  1. I0062 9702240510 970220 PDR ADOCK 05000414 PDR

Conference Call on Steam Generator Tube Inspection Results Licensees' 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 for both condition monitoring (i.e., the as-found condition of the tubes demonstrate i

adequate integrity was maintained during the previous cycle) and operational assessment (i.e., the projected condition of the tubes is such that adequate integrity will be maintained during the upcoming operational cycle).

{

Specific information that facilitates staff reviews of licensees' condition monitoring and operational assessments includes:

Primary to secondary leakage prior to shutdown Results of secondary side hydro For each steam generator, provide a general description of areas examined; include expansion criteria and specify type of probe used in each area For analyzed EC results, describe bobbin indications (those not examined with rotating pancake coil (RPC)) and indications confirmed by RPC, Plus Point, or i

Cecco probes.

Include the following information:

location, number, degradation mode, disposition, and voltages / depths / lengths of most significant indications.

1 Describe repair / plugging plans Discuss previous significant inspection history; percent of tube plugged; "look backs" performed j

Discuss new inspection findings 4

Describe in-situ pressure test plans and results, if available; include tube selection criteria l

d Describe tube pull plans and preliminary results, if available; include tube selection criteria Assessment of tube integrity for previous operating cycle (condition monitoring) j Assessment of tube integrity for next operating cycle (operational assessment) j Provide schedule for steam generator-related activities during remainder of current outage Provide general description of the plant and SGs, e.g, EPFY, cycle #, tube material, T,,, U-bend heat treatment.

3 1