ML13183A349

NRR E-mail Capture - Request for Additional Information - Relief Request N1-I4-LMT-001 Limited Weld Examinations for NAPS, Unit No. 1

ML13183A349
Person / Time
Site:	North Anna
Issue date:	07/02/2013
From:	V Sreenivas Plant Licensing Branch II
To:	Heacock D Dominion Generation
References
Download: ML13183A349 (2)

Text

NRR-PMDAPEm Resource From: Sreenivas, V Sent: Tuesday, July 02, 2013 9:55 AM To: 'david.heacock@dom.com' Cc: 'Tom Shaub'; 'david.sommers@dom.com'; Pascarelli, Robert; Rezai, Ali; Lupold, Timothy

Subject:

REQUEST FOR ADDITIONAL INFORMATION - RELIEF REQUEST N1-I4-LMT-001 LIMITED WELD EXAMINATIONS FOR NAPS, UNIT NO. 1 By letter dated November 1, 2012 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML12319A278), Virginia Electric and Power Company (the licensee) submitted relief request (RR) N1-I4-LMT-001 for the U.S. Nuclear Regulatory Commission (NRC) review and approval. The licensee requested relief from certain requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, specifically related to examination coverage.

RR N1-I4-LMT-001 is applicable for the fourth 10-year inservice inspection (ISI) interval of the North Anna Power Station (North Anna), Unit 1, which commenced on May 1, 2009 and will end on April 30, 2019. The purpose of this email is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs detailed technical review of this request. Please submit the following additional information in order to complete its detailed technical review.

REQUEST FOR ADDITIONAL INFORMATION (RAI)

VIRGINIA ELECTRIC AND POWER COMPANYNORTH ANNA POWER STATION UNITS 1 DOCKET No.

50-338 Relief request stated that the volumetric examination identified an indication in Welds 8 (12-SI-67) and SW-12 (32-SHP-58) that was determined by the licensee to be a root geometry.

Please provide the detail:

• How did the licensee determine that these indications were root geometry?

• Were these root geometries also detected by the previous examinations in these welds?

Please submit the response to these RAIs by July 31, 2013. If you have any questions please contact me at your earliest.

V. Sreenivas, PH.D., C.P.M.,

Project Manager, Rm.#O8F6, LPL2-1 North Anna Power Reactors, Units 1 and 2 Division of Operating Reactor Licensing-NRR (301) 415-2597, v.sreenivas@nrc.gov

• • • This email message, and any files transmitted with it, may contain confidential, non-public, sensitive and proprietary data intended solely for the person(s) to whom this email message is directly addressed.

Unauthorized use of the data contained in this message is prohibited. If you are not the intended recipient of this message or have received this message in error, please notify the sender immediately by telephone or email Reply and delete the original message and any attachments without keeping a copy***

1

Hearing Identifier: NRR_PMDA Email Number: 740 Mail Envelope Properties (V.Sreenivas@nrc.gov20130702095500)

Subject:

REQUEST FOR ADDITIONAL INFORMATION - RELIEF REQUEST N1-I4-LMT-001 LIMITED WELD EXAMINATIONS FOR NAPS, UNIT NO. 1 Sent Date: 7/2/2013 9:55:12 AM Received Date: 7/2/2013 9:55:00 AM From: Sreenivas, V Created By: V.Sreenivas@nrc.gov Recipients:

"'Tom Shaub'" <tom.shaub@dom.com>

Tracking Status: None

"'david.sommers@dom.com'" <david.sommers@dom.com>

Tracking Status: None "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov>

Tracking Status: None "Rezai, Ali" <Ali.Rezai@nrc.gov>

Tracking Status: None "Lupold, Timothy" <Timothy.Lupold@nrc.gov>

Tracking Status: None

"'david.heacock@dom.com'" <david.heacock@dom.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 2461 7/2/2013 9:55:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: