ML15254A204
| ML15254A204 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/10/2015 |
| From: | Kimberly Green Plant Licensing Branch III |
| To: | Erickson J Entergy Nuclear Operations |
| Green K | |
| References | |
| TAC MF6448 | |
| Download: ML15254A204 (3) | |
Text
1 NRR-PMDAPEm Resource From:
Green, Kimberly Sent:
Thursday, September 10, 2015 2:42 PM To:
ERICKSON, JEFFREY S; jmiska@entergy.com Cc:
Rankin, Jennivine; Collins, Jay; Cumblidge, Stephen; Alley, David; Wolfgang, Robert; Hardies, Robert
Subject:
Request for Additional Information Regarding RR 4-22 (MF6448)
Attachments:
Final RAI 09-10-15.docx Mr. Erickson and Mr. Miksa, By letter dated July 7, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15190A262), as supplemented by letter dated July 31, 2015 (ADAMS Accession No. ML15219A587),
Entergy Nuclear Operations, Inc. (the licensee), proposed an alternative to 10 CFR 50.55a(g)(6)(ii)(F)(3) for Palisades Nuclear Plant (Palisades). This regulation defines the inspection requirement for branch connection butt welds at Palisades in accordance with American Society of mechanical Engineers Boiler and Pressure Vessel Code Case N-770-1, Alternative Examination Requirements and Acceptance Standards for Class 1 PWR [Pressurized Water Reactor] Piping and Vessel Nozzles Butt Welds Fabricated With UNS N06082 or UNS W86182 Weld Filler Material With or Without Application of Listed Mitigation Activities, with U.S. Nuclear Regulatory Commission (NRC) conditions. The licensee is requesting an extension of the required inspection of the Alloy 82/182 branch connections to the primary coolant system for one cycle of operation as presented in Relief Request RR 4-22.
The NRC staff has reviewed the information provided and determined that additional information is required in order to complete its review.
A draft request for additional (RAI) was transmitted on September 4, 2015, and a clarification call was held on September 10, 2015. A response date of no later than September 18, 2015, is requested. Please let me or Jennie Rankin know if this date cannot be met.
Sincerely, Kim Green, Sr. Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 301-415-1627
Hearing Identifier:
NRR_PMDA Email Number:
2374 Mail Envelope Properties (Kimberly.Green@nrc.gov20150910144200)
Subject:
Request for Additional Information Regarding RR 4-22 (MF6448)
Sent Date:
9/10/2015 2:42:18 PM Received Date:
9/10/2015 2:42:00 PM From:
Green, Kimberly Created By:
Kimberly.Green@nrc.gov Recipients:
"Rankin, Jennivine" <Jennivine.Rankin@nrc.gov>
Tracking Status: None "Collins, Jay" <Jay.Collins@nrc.gov>
Tracking Status: None "Cumblidge, Stephen" <Stephen.Cumblidge@nrc.gov>
Tracking Status: None "Alley, David" <David.Alley@nrc.gov>
Tracking Status: None "Wolfgang, Robert" <Robert.Wolfgang@nrc.gov>
Tracking Status: None "Hardies, Robert" <Robert.Hardies@nrc.gov>
Tracking Status: None "ERICKSON, JEFFREY S" <JERICKS@entergy.com>
Tracking Status: None "jmiska@entergy.com" <jmiska@entergy.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1696 9/10/2015 2:42:00 PM Final RAI 09-10-15.docx 25811 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION PROPOSED ALTERNATIVETO10 CFR 50.55a(g)(6)(ii)(F)(3) REQUIREMENTS FOR EXAMINATION OF BRANCH CONNECTION BUTT WELDS ENTERGY NUCLEAR OPERATIONS, INC, PALISADES NUCLEAR PLANT DOCKET NO. 50-255 By letter dated July 7, 2015(Agencywide Documents Access and Management System (ADAMS) Accession No. ML15190A262),as supplemented by letter dated July 31, 2015 (ADAMS Accession No. ML15219A587), Entergy Nuclear Operations, Inc. (the licensee),
proposed an alternative to 10 CFR 50.55a(g)(6)(ii)(F)(3) for Palisades Nuclear Plant (Palisades). This regulation defines theinspection requirement forbranch connection butt weldsat Palisadesin accordance with American Society of Mechanical Engineers Boiler and Pressure Vessel Code Case N-770-1, Alternative Examination Requirements and Acceptance Standards for Class 1 PWR Piping and Vessel Nozzle Butt Welds Fabricated With UNS N06082 or UNS W86182 Weld Filler Material With or Without Application of Listed Mitigation Activities, with NRC conditions. The licensee is requesting an extension of the required inspection of the Alloy 82/182 branch connections to the primary coolant system forone cycle of operation aspresented in Relief Request RR 4-22.
The NRC staff has reviewed the information provided and determined that additional information is required in order to complete its review.
RAI-1
The NRC staff understands that the branch connection butt weld volumetric examination procedure is qualified to detect and length size flaws in a representative weld. The only barrier to obtaining a full qualification of the procedure and personnel, is that the depth sizing capability of the procedure and inspectors has not met the 0.125 inch RMS error requirements of ASME Code Section XI, Supplement 10. Please provide the following information:
- 1. Confirm the NRCs understanding of the status of qualification of the branch connection weld volumetric examination procedure.
- 2. If the NRCs understanding of the above is correct, the Performance Demonstration Initiative (PDI) often provides the inspection personnel with the actual RMS error obtained during the testing for Supplement 10 inspections when an inspector is not able to achieve a 0.125 inch or less RMS depth sizing error. Please provide the RMS error for the depth sizing obtained during PDI testing on the mockups.