ML17201Q244
| ML17201Q244 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 07/20/2017 |
| From: | Mahesh Chawla Plant Licensing Branch III |
| To: | Jennifer Davis NextEra Energy Duane Arnold |
| References | |
| MF9380 | |
| Download: ML17201Q244 (2) | |
Text
1 NRR-PMDAPEm Resource From:
Chawla, Mahesh Sent:
Thursday, July 20, 2017 1:48 PM To:
Davis, J.Michael (J.Michael.Davis@nexteraenergy.com);
laura.swenzinski@nexteraenergy.com; Murrell, Bob (Bob.Murrell@nexteraenergy.com);
Catron, Steve (Steve.Catron@fpl.com)
Subject:
Request for Additional Information - Duane Arnold Energy Center - Relief Request RR Extension of Permanent Relief from Ultrasonic Examination of RPV Circumferential Shell Welds For the Renewed Operating License Term - MF9380 By letter dated March 7, 2017 (Agencywide Documents Access and Management System Accession No. ML17069A172), NextEra Energy Duane Arnold, LLC (the licensee) submitted Relief Request No. 1 with a proposed alternative to the U.S. Nuclear Regulatory Commission (NRC) for relief from certain American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI requirements for inspection of reactor pressure vessel (RPV) circumferential welds at Duane Arnold Energy Center (DAEC).
The NRC staff has reviewed the submittal and determined that the additional information below is needed to complete the review.
RAI-1
The listed component numbers under ASME Code Component(s) Affected contains a potential misprint.
Component Number VCB-A002 stands out from the rest of the component numbers: VCB-B001, VCB-B003, and VCB-B004. Please confirm that Component Number VCB-A002 is correct.
RAI-2
The proposed alternative contains several elements. The first element states that, The examination requirements of ASME Code Section XI, Table IWB-2500-1, Examination Category B-A, Item No B1.12, for the RPV longitudinal shell welds, also known as vertical or axial welds, will be performed as required to the extent possible. Please note that to the extent possible (a qualitative description) could be interpreted as an effort very different from the ASME Code required essentially 100% of the weld length (a quantitative description).
Please clarify the statement to the extent possible and note that if DAECs future inspection of RPV axial welds is less than the ASME code requirement of essentially 100% of the weld length, a request of relief from the ASME Code is required.
Please arrange a teleconference with the NRC staff to discuss the above requested information. Thanks Mahesh Chawla Project Manager Phone: 301-415-8371 Fax: 301-415-1222 mahesh.chawla@nrc.gov
Hearing Identifier:
NRR_PMDA Email Number:
3615 Mail Envelope Properties (Mahesh.Chawla@nrc.gov20170720134800)
Subject:
Request for Additional Information - Duane Arnold Energy Center - Relief Request RR Extension of Permanent Relief from Ultrasonic Examination of RPV Circumferential Shell Welds For the Renewed Operating License Term - MF9380 Sent Date:
7/20/2017 1:48:13 PM Received Date:
7/20/2017 1:48:00 PM From:
Chawla, Mahesh Created By:
Mahesh.Chawla@nrc.gov Recipients:
"Davis, J.Michael (J.Michael.Davis@nexteraenergy.com)" <J.Michael.Davis@nexteraenergy.com>
Tracking Status: None "laura.swenzinski@nexteraenergy.com" <laura.swenzinski@nexteraenergy.com>
Tracking Status: None "Murrell, Bob (Bob.Murrell@nexteraenergy.com)" <Bob.Murrell@nexteraenergy.com>
Tracking Status: None "Catron, Steve (Steve.Catron@fpl.com)" <Steve.Catron@fpl.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1935 7/20/2017 1:48:00 PM Options Priority:
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