IR 05000331/1998005

Insp Rept 50-331/98-05 on 990622-24.No Violations Noted. Major Areas Inspected:Maint

ML20209G507
Person / Time
Site:	Duane Arnold
Issue date:	07/12/1999
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20209G504	List: IR 05000331/1998005 ML20209G499
References
50-331-98-05, 50-331-99-5, NUDOCS 9907190181
Download: ML20209G507 (8)

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U. S NUCLEAR REGULATORY COMMISSION REGIONlli l i

l Docket No: 50-331 l License No: DPR-49 j l

I Report No: 50-331/98005(DRS) J I

i Licensee: IES Utilities In f

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200 First Street P. O. Box 351

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Cedar Rapids, IA 52406-0351 Facility: Duane Arnold Energy Center )

Location: Palo, Iowa Dates: June 22-24,1999 Inspector: J. Schapker, Reactor Engineer Approved by: J. Jacobson, Chief, Mechanical Engineering Branch Division of Reactor Safety il

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EXECUTIVE SUMMARY

!: Duane Amold Energy Center i NRC Inspection Report 50-331/98005(DRS)

This inspection focused on the inservice inspection program. The report covers a three-day ;

on-site inspection by one regional inspecto Maintenance

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e Inservice inspection activities were effectively implemented and in accordance with the l licensee program and American Society for Mechanical Engineers (ASME) requirement i l The inservice inspection program reflected a strong commitment to safety through the .

l examinations of welds susceptible to intergranular stress corrosion cracking using

! procedures and personnel qualified by Performance Demonstration initiativ (Section M1.1).

l e A strong inservice inspection program with active oversight of contract personnel was demonstrated by the licensee's Level ill independent evaluation of contractor-identified nondestructive examination indications. (Section M1.1)

l e Nondestructive examination procedures for the ISI program met the applicable ASME Section V and XI requirem~ents. (Section M3)

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Report Details 4 y

l lI. Maintenance M1 Conduct of Maintenance-

- M1.1 Observation of inservice insoection (ISI) Activities . Inspection Scope (73753. 73755)

l The inspector observed inservice inspection work-in-progress, interviewed personnel,

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reviewed data associated with General Electric Nuclear Energy inspection Services (GE),

and observed personnel performing the following activities:

e Enhanced visual examinations of the inside surfaces of the reactor pressure vessel recorded on video tap '

e Ultrasonic examination of residual heat removal (RHR) weld performed by the licensee Level lli examiner, weld number WHF-CF07 * Review of Radiography Examination (RT) performed of replacement welds for the main steam system valve EBD-8 welds W1 and W e Review of nondestructive examination (NDE) data reports for examinations performed during the RF-15 refueling outage April- May 199 e . Review of the ISI program for compliance to ASME Code Section XI,1989 Edition, and regulatory requirement j Observations and Findinos -

The licensee personnel adhered to procedural requirements and demonstrated the knowledge and skills necessary for the examinations observed. The inspector noted that a licensee Level lli examiner had been assigned to provide active oversight of contractor personnel. The licensee Level ill made independent evaluations of indications found during ISI examinations and compared their results with the flaw dispositions made by the l NDE contractor The inspector's observation of ISI examinations performed by the licensee Level ill l examiner were performed with emphasis ~on following procedure requirement ;

interviews of the Level lli examiner divulged his knowledge of the NDE processes, ,

ASME Code and regulatory requirements for the examinations performe l Radiographs reviewed by the inspector were of good quality, with reader sheets ,

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documenting the process variables and results as required by RT procedure 1211.14, Revision ,

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The inspector reviewed the ISI program and determined that the licensee complied with ,

the ASME Code Section XI requirements for ISI program implementation. In accordance l l with the recommendations in Generic Letter (GL) 88-01, the licensee performed augmented inspections of intergranularstress corrosion cracking (IGSCC) susceptible piping welds. Reviews of NDE data reports verified the examinations were performed in accordance with the referenced procedures, and appropriate NDE data was recorded as required by procedures and the ASME Cod Visual inspections (VT) of reactor vessel internals were completed using an underwater video camera. The inspector reviewed portions of the tapes of the core spray and feedwater spargers, sparger end bracket welds, and sparger T-box , junction box, and arm welds. The licensee's VT Levei ill ISI engineer had previously reviewed this activity demonstrating active contractor oversight. Pictures were very clear due to water clarity, effective lighting, and high resolution color cameras. The enhanced visual examinations inside the reactor pressure vessel were of good quality and coverage. The inspector

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reviewed the VT video tapes and verified that no degraded welds or newly damaged components were observed. Previously damaged components such as feedwater sparger flow holes, which had m;nor cracks at the openings, were documented during previous inspections, no additional growth was identifie ASME Section XI, Appendix Vill, requires demonstration of the effectiveness of UT procedures, equipment, and personnel. To date, Appendix Vill has not been mandated by the NRC; however, the licensee proactively elected to perform applicable ISI ultrasonic examinations using Performance Demonstration Initiative procedures and personnel for IGSCC susceptible welds. These exams were demonstrated to the Authorized Nuclear Inservice inspector (ANil) as required by ASME IWA-224 Conclusions Inservice inspection activities were effectively implemented in accordance with the licensee's program and ASME requirements. The inservice inspection program reflected a strong commitment to safety through the examinations of welds susceptible to IGSCC using procedures and personnel qualified by the Performance Demonstration Initiative. A strong inservice inspection program with active oversight of contract personnel was also demonstrated by the licensee's independent evaluation of contractor-identified nondestructive examination indication M3 Maintenance Procedures and Documentation M3.1 Jngervice insoection Procedures Insoection Scope (73051. 73052)

. The inspector reviewed and evaluated the following ISI documents, prograin procedures and ISI personnel certifications for compliance with technical specifications, ASME Code, NRC requirements and American Society for Nondestructive Testing SNT-TC-1 A recommendations:

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e Duane Arnold ISI program for the Third inspection interval, first period,2"d outag ASME Code Relief Request numbers: NDE-R004; R-014 and R-015

• General Electric Company (GE) ultrasonic examination (UT) procedures:

UT-DAC-300V0, Revision 0, "UT Manual Examination of Reactor Vessel (RV)

Assembly Welds".

UT-DAC-212 V1, Revision 0, " Automated UT of Overlaid Austinitic Piping Welds" UT-DAC-209 V1, Revision 0, " Automated UT of Similar and Dissimilar Metal Nozzle to Safe-End Welds"

. UT DAC 106 VO, Revision 1, " Manual UT of Ferritic Pipe Welds" UT DAC 311 V1, Revision 0, "UT of Nozzle Inner Radil and Bore"

• - Duane Amold Site NDE Procedures:

DAEC 1211.14, Revision 4, " Radiography Examination (RT) -1 DAEC 1211.19, Revision 0,"UT of Ferritic Pipe In Accordance With PDI-UT-1 Revision B" e Certifications of NDE personnel:

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R. Bonniwell, Level 111 UT L. Brown, Level ll UT N. Cribbe, Level ll UT, magnetic particle (MT), Liquid Penetrant Examination (PT)

H. Kloster, Level 11 UT, PT i C. Meredith, Level ll UT, PT, MT, Visual examination (VT)-Il l

J. Serth, Level ll UT D. Tucker, Level l! UT-L, Level i MT, PT A. Walker, Level ll UT-L, Level l MT, PT J. Briggs, Level lli, UT, VT-1,2,3 Duane Arnold Enerav Center F. Dohmen, Level lil: RT, UT, PT, MT, VT 1- b. Observations and Findinas The licensee's VT and UT examinatior, data reports and evaluation documentation complied with ASME Code Section XI requirements. The inspector reviewed the Performance Demonstration Initiative procedures for compliance to current ASME Code requirements, including demonstration to the ANi [.

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The inspector reviewed GE personnel qualification and certification records and determined that they met the American Society for Nondestructive Testing (ASNT)

SNT-TC-1 A Recommended Practice and the ASME Code,1989 Edition,Section XI requirements. These certifications had been reviewed and accepted by the ANi All observed ISI examination procedures were approved and accepted by the ANil. The ilRC inspector also reviewed the ISI procedures used for the examinations observed and determined that the procedures met the required ASME Section XI and Section V

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requirements. Relief requests from ASME Code requirements were documented in the l ISI plan and Nuclear Reactor Regulation (NRR) approvals were reviewed by the l inspecto '

c.^ Conclusions The ISI documents, procedures and personnel certifications reviewed during this inspection complied with ASME Code requirements. ASME Code requirements which were not performed were documented and submitted to NRR as relief request. These relief requests were approved and the licensee performed the altemate examination as required by the NRR relief request approval documen V. Manaaement Meetinas X1 Exit Meeting Summary The inspector presented the inspection results to members of licensee management at the conclusion of the inspection on June 24,1999. The licensee acknowledged the findings presented. The inspectors asked the licensee whether any materials examined during the l Inspection should be considered proprietary. No proprietary information was identifie l l

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PARTIAL LIST OF PERSONS CONTACTED Licensee -

F. Dohmen, NDE Level 111 )

F. Dolhman, ISI Engineer Level lli M. Huting, Program Engineering Supervisor J. Karrick, Licensing Engineer

' M. .McDermott, Engineering Manager G. Middlesworth, Plant Manager G. Park,' ASME/NDE Specialist K. Schneider, Team Leader-Programs Engineering INSPECTION PROCEDURE USED IP 73751: Review of ISI program IP 73772: Review of ISI procedures IP 73753: Observation of ISI activities l IP 73755: Review of ISIinspection data ITEMS OPENED, CLOSED, AND DISCUSSED Opened None Closed None Discussed None

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!*' ,i LIST OF ACRONYMS USED ANil Authorized Nuclear Inservice inspector ASME American Society of Mechanical Engineers ASNT American Society for Nondestructive Testing DAEC Duane Amoir' Er 3rgy Center DRS Division of Rea.:.or Safety EPRI Electrk: Power Research Institute GE General Electric Company IGSCC Intergranular Stress Corrosion Cracking ISI Inservice inspection NDE Nondestructive Examination NRC Nuclear Regulatory Commission NRR Nuclear Reactor Regulation RHR Residual Heat Removal System VT Visual Examination s

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