ML080990497

RAI Pertaining to Relief Requests MC-R001 and MC-P001 for Second Containment Inservice Inspection Interval

ML080990497
Person / Time
Site:	Duane Arnold
Issue date:	04/22/2008
From:	Feintuch K NRC/NRR/ADRO/DORL/LPLIII-1
To:	Richard Anderson Nuclear Management Co
Feintuch K, NRR/DORL/LPL3-1, 415-3079
References
TAC MD7421, TAC MD7422
Download: ML080990497 (4)

Text

April 22, 2008 Mr. Richard L. Anderson Vice President Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785

SUBJECT:

DUANE ARNOLD ENERGY CENTER - REQUEST FOR ADDITIONAL INFORMATION PERTAINING TO RELIEF REQUESTS MC-R001 AND MC-P001 FOR SECOND CONTAINMENT INSERVICE INSPECTION INTERVAL (TAC NOS. MD7421 & MD7422)

Dear Mr. Anderson:

The Nuclear Regulatory Commission (NRC) staff is reviewing your application dated November 16, 2007, (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML073320185) for the subject relief request. On April 3, 2008, the NRC staff transmitted a draft Request for Additional Information (RAI) and discussed the draft RAI on April 4, 2008, with your staff.

Enclosed please find the final RAI, which is identical in content to the draft RAI. In the phone call of April 4, 2008, your staff agreed that you can provide your response by May 5, 2008.

Please feel free to contact me if you need further clarification of the RAI.

Sincerely,

/RA/

Karl D. Feintuch, Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

Request for Additional Information cc w/encls: See next page

ML080990497 OFFICE NRR/LPL3-1/PM NRR/LPL3-1/LA NRR/LPL3-1/BC NAME KFeintuch THarris LJames DATE 04/ 22 /08 04/ 22 /08 04/ 22 /08

REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUESTS MC-R001 & MC-P001 DUANE ARNOLD ENERGY CENTER DOCKET NO. 50-331

RAI 1

With reference to Relief Request MC-R001, the staff notes that Note 2 of Table IWE-2500-1 Examination Category E-C, Item E4.11, of the American Society of Mechnical Engineers (ASME) Code Section XI, 2001 Edition through 2003 Addenda, which is applicable to successive inspection intervals, states that: The extent of examination shall be 100 percent (of those identified for augmented examination per IWE-1240) for each inspection period until the areas examined remain essentially unchanged for the next inspection period. Such areas no longer require augmented examination in accordance with IWE-2420(c). The purpose of performing the detailed visual examination for the subject examination category is provided in paragraph IWE-2310(c). The above criteria and the acceptance criteria in IWE-3511 are intended to determine whether continued re-examination of an area that was identified for augmented examination is required or not in the next inspection period. Staff also notes that the code requirement as stated in the relief request, (Table) IWE-2500-1, Category E-C requires a Detailed Visual (VT-1) every period on 100 percent of surface areas identified by IWE-1242 is not a complete and accurate statement of the code requirement. Further, the description in the relief request should address the requirements for augmented examination rather than periodic examination of the suppression chamber. Please clarify and justify your request for relief in the context of the code requirements relating to the magnitude and extent of deterioration and distress (observed corrosion rate, actual depth/extent of corrosion/pitting, etc.) of the specific areas of the torus identified for augmented examination for the Second Containment Inservice Inspection interval for Duane Arnold and the acceptance criteria for these examinations in IWE-3511.

RAI 2

With regard to the Alternate Examination section of Relief Request MC-P001, please confirm (i) if the minor repair/replacement activities for which relief is sought are those defined in paragraph IWE-5222 of the ASME Code Section XI, 2001 Edition through 2003 Addenda; and (ii) if non-destructive examination (such as RT, MT, etc.) of the affected area will be performed per the construction code or repair/replacement program, immediately following these minor repair/replacement activities for which relief is sought.

ENCLOSURE

Duane Arnold Energy Center cc:

Mr. J. A. Stall Senior Vice President, Nuclear and Chief Nuclear Officer Florida Power & Light Company P. O. Box 14000 Juno Beach, FL 33408-0420 Mr. M. S. Ross Managing Attorney Florida Power & Light Company P. O. Box 14000 Juno Beach, FL 33408-0420 Ms. Marjan Mashhadi Senior Attorney Florida Power & Light Company 801 Pennsylvania Avenue, NW Suite 220 Washington, DC 20004 Don E. Grissette Vice President, Nuclear Training and Performance Improvement Florida Power & Light Company P. O. Box 14000 Juno Beach, FL 33408 Steven R. Catron Manager, Regulatory Affairs Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324 U. S. Nuclear Regulatory Commission Resident Inspector=s Office Rural Route #1 Palo, IA 52324 Mr. Mano Nazar Senior Vice President and Nuclear Chief Operating Officer Florida Power & Light Company P. O. Box 14000 Juno Beach, FL 33408 Mr. D. A. Curtland Plant Manager Duane Arnold Energy Center 3277 DAEC Rd.

Palo, IA 52324-9785 Mr. R. S. Kundalkar Vice President, Nuclear Technical Svcs.

Florida Power & Light Company P. O. Box 14000 Juno Beach, FL 33408 Daniel K. McGhee Iowa Department of Public Health Bureau of Radiological Health 321 East 12th Street Lucas State Office Building, 5th Floor Des Moines, IA 50319-0075 Chairman, Linn County Board of Supervisors 930 1st Street SW Cedar Rapids, IA 52404 Last revised March 20, 2008