ML022550572
| ML022550572 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba, McGuire  |
| Issue date: | 09/05/2002 |
| From: | Tuckman M Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 02-GO-001 | |
| Download: ML022550572 (6) | |
Text
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Duke Duke Power 526 South Church St. EC07H 1fPower.
Charlotte, NC 28202 A Duke Energy Company P.O. Box 1006 EC07H Charlotte, NC 28201-1006 M. S. Tuckman (704) 382-2200 OFFICE Execueve Vice President (704)382-4360 FAX Nuclear Generation September 5, 2002 U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 ATTENTION: Document Control Desk
Subject:
Duke Energy Corporation Oconee Nuclear Station, Units 1, 2, and 3 Docket Nos. 50-269, 50-270, 50-287 McGuire Nuclear Station, Units1 and 2 Docket Nos. 50-369, 50-370 Catawba Nuclear Station, Units 1 and 2 Docket Nos. 50-413, 50-414 Request for Authorization to Utilize Wire-Type Image Penetrameters in Accordance with 1 OCFR50.55(a)(3)(i). - Supplement 1 Duke Energy Corporation Serial Number 02-GO-001
Reference:
Letter from M. S. Tuckman to NRC on the above subject, dated February 14, 2002.
In the reference letter, Duke Energy Corporation (Duke) requested relief from specified inspection requirements to authorize the use of wire-type Image Quality Indicators (101's). Duke has recently discussed this issue with-your staff. As a result of this discussion, the Justification of Using the Proposed Alternative has been clarified to include the following paragraph:
"The intent of this request for relief is to apply the sensitivity level specified in Tables NB-51 11-1 and NC-5111-1 to the selection of the appropriate wire diameter or plaque-type IQI size as provided for in ASME Section III, 1992 Edition, with 1993 Addenda. DEC will comply with all related requirements of ASME Section III, 1992 Edition, with 1993 Addenda for the selection and use of IQ's."
Questions regarding this request may be directed to G. S. Kent at 704 373-6032.
"M. S. Tuckman Attachment ADL(1
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aii bL)NE ENERY MNS #7408
[0002 DUKE ENERGY CORPORATION Oconee Nuclear Stations, Unit 1, 2 & 3 McGuire Nuclear Station, Units 1 & 2 Catawba Nuclear Station, Units 1 & 2 Request For Relief No.
02-GO-001 Request for Alternative use of wire-type Image Quality Indicators (IQI's) in performing radiographic examinations
Applicable Code Edition and Addenda
"* ASME Boiler and Pressure Vessel Code,Section III, 1989 and 1992 Editions, No Addenda
"* ASME Boiler and Pressure Vessel Code,Section XI, 1989 Edition, No Addenda and 1995 Edition with 1996 Addenda.
Description of Code Requirement (s) for Which an Alternative is Requested ASME Section III NB and NC (1989 and 1992 Editions) stipulates the use of the IQI's listed in Table NB 1111 1 and NC-5111-1, respectively. ASME Section III NB and NC do not state that the use of wire-type IQI's is unacceptable, it just.does not include a listing of the wire diameters that will provide equivalent sensitivity for the specified plaque-type IQI and essential hole.
The Oconee steam generator replacement outages for Units 1, 2,
and 3 will invoke Code Case N-416-1, "Alternate Pressure Test Requirements for Welded Repairs or Installation of Replacement Items by Welding, Class 1, 2, and 3,Section XI, Division I."
ASME Code Case N-416-1 invokes the 1992 Edition, no Addenda, of the ASME Section III Code in the performance of nondestructive examination of piping weldments.
The 1993 Addenda to the 1992 Edition incorporated equivalent wire type IQI's into Tables NB 5111-1 and NC 5-111-1.
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.J.L-OX 0U0ht Nf(U MNS 97408 to 003 Description of Proposed Alternative DEC is requesting NRC approval to use wire-type penetrameters in addition to plaque-type IQI's for performing radiographic examinations.
The current code of record does not list wire-type IQI's for use.
DEC has determined that the proposed alternative would provide an acceptable level of quality and safety.
Justification for Using the Proposed Alternative DEC considers that plaque-type IQI's are in some cases impractical for use due to physical placement and radiographic characteristics. Placement of flat plaque-type IQI's on curved surfaces of pipe components normally require shimming. When using Plaque-type IQI's, the recorded radiographic characteristics of the essential T hole is often obscured or distorted due to specimen anomalies or part geometry. These difficulties create re shoot conditions. Re-shoots have a negative A/PAPA impact due to the additional personnel radiation exposure.
Wire-type IQIs have been shown to provide quality and sensitivity equivalent to plaque-type IQI's as documented in Table 4 of ASTM E747-87. Equivalent sensitivity has also been demonstrated in ASME Section v, Article 22,SE-747 and in ASME Section III, 1992 Edition, 1993 Addenda, tables NB and NC 5111-1. Because of the equivalent sensitivity, the proposed alternative provides equivalent or superior results to current exam method utilizing only plaque-type IQI's. Therefore, the quality of the examination and resulting safety of the plant, based on the exam results are not impacted by this proposed alternative.
The intent of this request for relief is to apply the sensitivity level specified in Tables NB-5111-1 and NC 5111-1 to the selection of the appropriate wire diameter or plaque-type IQI size as provided for in ASME Section III, 1992 Edition, with 1993 Addenda.
DEC will comply with all related requirements of ASME Section III, 1992 Edition, with 1993 Addenda for the selection and use of IQI's.
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MINS #7408 The Quality and Safety Provided by the Proposed Alternative Information provided above supports the proposed use of wire-type IQIs and provides an acceptable level of quality and safety. The use of only plaque-type IQI's may result in unusual difficulty and additional personnel radiation exposure with no benefit of quality and safety.
Originated By:
Reviewed By:
09/05/2002 Date 09/05/2002 Date 3
(?] 004
U. S. Nuclear Regulatory Commission September 5, 2002 Page2 2
xc:
L. A. Reyes, Regional Administrator U. S. Nuclear Regulatory Commission, Region II Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, GA 30303-8931 L. N. Olshan (addressee only)
NRC Senior Project Manager (ONS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 R. E. Martin (addressee only)
NRC Senior Project Manager (MNS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 C. P. Patel (addressee only)
NRC Senior Project Manager (CNS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 M. C. Shannon NRC Senior Resident Inspector Oconee Nuclear Station S. M. Shaeffer NRC Senior Resident Inspector McGuire Nuclear Station D. J. Roberts NRC Senior Resident Inspector Catawba Nuclear Station
I U. S. Nuclear Regulatory Commission September 5, 2002 Page 3 bxc:
L. E. Nicholson - ON03RC C. J. Thomas - MG01 RC G. D. Gilbert - CN01 RC R. K. Rhyne - EC07J T. Wills - WC28H R. 0. Sharpe - WC28H R. L. Gill - EC12R J. 0. Barbour - EC07J T. L. Tucker - EC07J J. E. Smith - ON03RC K. L. Crane - MG01 RC K. E. Nicholson - CN01 RC NCMPA-1 SREC PMPA NCEMC ONS Master File - ON03DM (File OS 801.01)