ML082340635

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Vermont Yankee July 2008 Evidentiary Hearing - Intervenor Exhibit NEC-UW_10, Entergy, Condition Report: Checworks Predictive Models for Piping FAC Inspection Program Not Updated as Required Per Appendix D of PP7028, CR-VTY-2005-02239 ...
ML082340635
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 07/28/2005
From: Fitzpatrick J
Entergy Corp, Entergy Nuclear Operations, Entergy Nuclear Vermont Yankee
To:
NRC/SECY/RAS
SECY RAS
References
06-849-03-LR, 50-271-LR, Entergy-Intervenor-NEC-UW_10, RAS M-246 CR-VTY-2005-02239
Download: ML082340635 (3)


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" -.;L NEC-UW -10 CONDITION REPORT CWVT4Qff5.-..22-39 Originator: Fitzpatrick,James C. Originator Phone: 3086 uriginator Group: Eng DE Mech Civil Struct Staff Operability Required: N Reportability Required: N Supervisor Name: Goodwin,Scott D Discovered Date: 07/28/2005 10:26 Initiated Date: 07128t12005 10:43

- Condition

Description:

CHECWORKS predictive models for Piping FAC Inspection Program not updated as required per Appendix P ofPP 7028.

The CHECWORKS predictive models for the Piping FAC Inspection Program were not updated after the 2002 and 2004 refueling outages as required per Appendix D ofPP 7028. Section 4.4.13 ofPP 7028 states the FAC Program Coordinator will as applicable, incorp6rate the inspection results into the CHECWORKS models for use in planning the scope ofthe.next refueling outage. However, Appendix D Section D.5 ofPP 7028 states that the CHECWORKS models shall be updated after each refueling outage to incorporate inspection data taken during the outage for use [in planning inspections for the following ou tages.

There are no operability concems. The CHECWORKS model results along with previous inspection data and industry operating experience are inputs.to determining the scope of inspections for each refueling outage. Scoping for FAC inspections for RFO 24 and RFO 25 was based on CHECWORKS predicted wear rates from the 2000 and 2001 CHECWORKS model updates. Actual.measured wear rates from 200 1,2002 and 2004 RFO inspections are an order of magnitude less than the CHECWORKS predicted wear rates. If the 2002 and 2004 inspection data were incorporated into the models the CHECWORKS predicted wear rates would be reduced.

Use ofthe non-updated CHECWORKS model results as a basis for inspection planning is conservative in that scoping decisions documented ifs the Inspection Location Worksheets were based on the CHECWORKS predicted wear rates significantly greater than actual measured wear rates.

Inunediate Action

Description:

Update ofthe CHECWORKS models is in progess.

There is no impact on planned RFO 25 inspection scope. Useofthe non-updated CHECWORKS. model results as a basis for inspection planning for RFO 25 is conservative in that scoping decisions documented in the Inspection Location Worksheets were based on the CHECWORKS predicted wear rates significantly greater than actual measured wear rates.

Suggested Action

Description:

REFERENCE ITEMS:

DOCKETED Tp_* Code Description USNRC PROCEDURE PP 7028 August 12, 2008 (11:00am)

OFFICE OF SECRETARY RULEMAKINGS AND ADJUDICATIONS STAFF 9" L.

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En tergy ADMIN 1CR-VTY-2005"02239 Initiated Date: 7/28/2005 10:43 Owner Group :EngDE Mech Civil Struct Mgmt Current

Contact:

Current Significance: C - CORRECT ONLY

,Closed by:

Summary

Description:

CHECWORKS predictive models for Piping FAC Inspection Program not updated as required per Appendix D ofPP 7028.

The CHECWORKS predictive models for. the PipingFAC Inspection Program were not updated after the 2002 and 2004 refueling outages.as required per Appendix D ofPP 7028. Section 4.4.13 ofPP 7028 states the FAC Program Coordinator will as applicable, incorporate the inspection results into the CHECWORKS models for use in planning the scope of the next refueling outage. However, Appendix D Section D.5 ofPP 7028 states that the CHECWORKS models shall be updated after each refueling outage to incorporate inspection data taken during the outage for use in planning inspections for the following outages.

There are no operability concerns. The CHECWORKS model results along with previous inspection data and industry operating experience are inputs to determining the scope of inspections for each refueling outage. Scoping for FAC inspections for RFO 24 and RFO 25 was based on CHECWORKS predicted wear rates from the 2000 and 2001 CHECWORKS model updates. Actual measured wear rates from 2001,2002 and 2004 RFO.inspections are an order of magnitude less than the CHECWORKS predicted wear rates. If the 2002 and 2004 inspection data.were incorporated into the models the CHECWORKS predicted wear rates would be reduced.

Use of the non-updated CHECWORKS model results as a basis for inspection planning is conservative in that scoping decisions documented in the Inspection Location Worksheets were based on the CHECWORKS predicted' wear rates significantly greater than actual measured wear rates.

Remarks

Description:

Closure

Description:

NEC038417

Entergy ASSIGNMENTS I CR-VTY-2005-02239 Version: 1 Significance Code: C - CORRECT ONLY Classification Code: C 0

Owner Group: Eng DE Meeh Civil Struct Mgmt 07/28"12005 13:26 Performed By: Rogers,James G Assignment

Description:

WX - Procedure Non-Compliance ESDE KW-HU Precursor; HU Clock Reset Dept

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NEC038418