ML15210A780

2015/07/28 NRR E-mail Capture - Draft RAI for Mur Flex Hose RR

ML15210A780
Person / Time
Site:	Catawba
Issue date:	07/28/2015
From:	Ed Miller Plant Licensing Branch II
To:	Rudy L J Duke Energy Corp
References
Download: ML15210A780 (3)

Text

1NRR-PMDAPEm ResourceFrom:Miller, EdSent:Tuesday, July 28, 2015 12:39 PMTo:'lawrence.rudy@duke-energy.com'

Subject:

Draft RAI for MUR Flex Hose RRAttachments:Draft RAI CN-15-001.docxLarry, The NRC staff's draft RAI for the subject relief request is attached to this e-mail. The draft RAI is not an official NRC staff request and is being provided to you to facilitate a subsequent conference call to determine: 1) If the questions clearly convey the NRC staff information needs; 2) Whether the regulatory basis for the questions is understood; 3) Whether the information is already available in existing, docketed, correspondence; and 4) To determine an appropriate response time-frame. After you've had a chance to review the draft information request, please contact me to schedule the conference call.

Also, I know it's short notice, but do you think there would be any chance of having the draft RAI call between now and next Tuesday? The reviewer is going be out of the office for a while after next Tuesday. Ed Miller (301) 415-2481

Hearing Identifier: NRR_PMDA Email Number: 2257 Mail Envelope Properties (ecab4efa1fa64f2e8db3b3f3851d2638)

Subject:

Draft RAI for MUR Flex Hose RR Sent Date: 7/28/2015 12:39:17 PM Received Date: 7/28/2015 12:39:00 PM From: Miller, Ed Created By: Ed.Miller@nrc.gov Recipients: "'lawrence.rudy@duke-energy.com'" <lawrence.rudy@duke-energy.com> Tracking Status: None Post Office: HQPWMSMRS03.nrc.gov Files Size Date & Time MESSAGE 877 7/28/2015 12:39:00 PM Draft RAI CN-15-001.docx 29127 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:

ENCLOSURE DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING CATAWBA NUCLEAR STATION, UNIT 1 RELIEF REQUEST 15-CN-001 ALTERNATE REPAIR FOR FLEX HOSE STEAM LEAK DOCKET NO. 50-413 By letter datedMarch 19,2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15082A074), Duke Energy Carolinas (Duke) submitted a relief request for the Catawba Nuclear Station, Unit 1. The proposed reliefwould allow the implementation of an alternate repair method for a steam leak. Duke has provided supplements to the submittal dated May 4, 2015, and July 16, 2015 (ADAMS Accession Nos. ML15127A170 and ML15201A499, respectively). In order for the NRC staff to complete its review of the relief request, the following additional information is requested. 1. The request stated that it is proposing an alternative the requirements of ASME Code Section XI, Appendix IX, Article IX-1000, General, (c) (2), in order to use a mechanical clamping device on a system that forms part of the containment boundary. The licensee also stated that the clamping device will be designed to Appendix IX, Article IX-3000. The NRC requests that Duke verify that it will also meet all of the other requirements of Appendix IX.

2. The request stated that the injection valve to be installed is ASME Code Class 1. The NRC requests that the applicant describe the code class of the other materials that will be used. 3. The request stated that sealant will be injected into the piping between the root valves. The NRC requests that the licensee provide the temperature rating of the sealant and verify that the sealant does not contain contaminates, such as fluorides or chlorides, that could be detrimental to stainless steel pressure boundary components.