ML101450309

Request for Additional Information Email, Relief Request RBS-ISI-014, Proposed Alternative to Examination Requirements for Reactor Pressure Vessel Weld Inspections, for Third 10-Year Inservice Inspection Interval

ML101450309
Person / Time
Site:	River Bend
Issue date:	05/25/2010
From:	Wang A Plant Licensing Branch IV
To:	Burmeister B, Lorfing D Entergy Operations
Wang, A B, NRR/DORL/LPLIV, 415-1445
References
TAC ME2818
Download: ML101450309 (3)

Text

From: Wang, Alan Sent: Tuesday, May 25, 2010 11:28 AM To: 'BURMEISTER, BARRY M'; David Lorfing (DLorfin@entergy.com)

Cc: Lent, Susan; Burkhardt, Janet

Subject:

River Bend Station Request for Additonal Information Regarding Relief Request RBS-ISI-014 (TAC no. ME2818)

Barry and David, By letter dated November 30, 2009 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML93380292), Entergy Nuclear Operations, Inc. (the licensee) submitted Request for Alternative RBS-ISI-014, for the third 10-year inservice inspection (ISI) interval at River Bend Station, Unit 1 (RBS), pursuant to paragraph 50.55a(a)(3)(i) of Title 10 of The Code of Federal Regulations (10 CFR). Relief request RBS-ISI-014 proposes an alternative to ISI requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI, and the augmented inspection requirements of NRC Generic Letter (GL) 88-01, NRC Position on IGSCC in BWR Austenitic Stainless Steel, January 25, 1988, including Supplement 1 to GL 88-01, in order to implement the alternative inspection guidance of BWRVIP-75-A, BWRVIP-75-A: BWR Vessel and Internals Project Technical Basis for Revisions to Generic Letter 88-01 Inspection Schedules, October 2005, for several ASME Code Examination Category B-F components.

BWRVIP-75-A, Section 3, Revised Inspection Criteria states, in part, that [I]n some cases, the

[inspection] sample size required to be examined by this report is smaller than that required by ASME Section XI. For those cases, it is recognized that when this report is approved for use by the NRC, each licensee will need to pursue an alternative to 10 CFR 50.55a requirements for Category B-J and B-F welds pursuant to 10 CFR 50.55a(a)(3)(i) to use the sample sizes specified in this report. In that request, each licensee will describe how the conditions contained in [the BWRVIP-75-A] report are applicable to their plant.

In accordance with the above BWRVIP-75-A criteria for requests for alternatives, pursuant to 10 CFR 50.55a(a)(3)(i), the NRC staff has determined that the following additional information is needed to complete its review of the subject relief request for RBS. This request was discussed with Barry Burmeister of your staff on May 25, 2010, and it was agreed that a response would be provided by June 30, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov.

1. State the weld category (e.g., Category A, B, C, D, etc.), based on the NUREG-0313, Technical Report on Material Selection and Processing Guidelines for BWR Coolant Pressure Boundary Piping, Revision 2, January 1988, and GL 88-01 weld categorization criteria, for each of subject welds for which this alternative is requested at River Bend 1, based on the nozzle materials, safe end materials, weld metal materials, and weld buildup material; and the performance of mechanical stress improvement (prior to or after two cycles of operation).

2. State the specific BWRVIP-75-A revised inspection criteria (e.g., inspection sample size and frequency, and sample expansion criteria) that will be applied to the subject welds at River Bend 1, for each of the applicable weld categorizations provided above, based on

criteria such as whether or not River Bend 1 is assuming credit for a Hydrogen Water Chemistry Program, and whether or not qualified Intergranular Stress Corrosion Cracking examinations have been conducted.

Alan Wang Project Manager (River Bend Station)

Division of Operating Reactor Licensing Nuclear Regulatory Commission E-mail Properties Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F66006AC6AD)

Subject:

River Bend Station Request for Additonal Information Regarding Relief Request RBS-ISI-014 (TAC no. ME2818)

Sent Date: 5/25/2010 11:28:12 AM Received Date: 5/25/2010 11:28:12 AM From: Wang, Alan Created By: Alan.Wang@nrc.gov Recipients:

BBURMEI@entergy.com ('BURMEISTER, BARRY M')

Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com))

Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)

Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)

Tracking Status: None Post Office:

HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 12985 5/25/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False

Sensitivity: olNormal Recipients received: