ML19016A235
| ML19016A235 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 12/31/2018 |
| From: | Joel Wiebe Plant Licensing Branch III |
| To: | Steinman R Exelon Generation Co |
| References | |
| Download: ML19016A235 (6) | |
Text
NRR-DMPSPEm Resource From: Wiebe, Joel Sent: Monday, December 31, 2018 1:24 PM To: 'Steinman, Rebecca L:(GenCo-Nuc)'
Cc: Gullott, David M.:(GenCo-Nuc); Purnell, Blake
Subject:
RE: RE: RE: Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies Attachments: Audit Plan R2.docx
- Rebecca, Here is the audit plan.
Joel From: Steinman, Rebecca L:(GenCo-Nuc) <Rebecca.Steinman@exeloncorp.com>
Sent: Monday, December 31, 2018 9:14 AM To: Purnell, Blake <Blake.Purnell@nrc.gov>
Cc: Gullott, David M.:(GenCo-Nuc) <David.Gullott@exeloncorp.com>; Wiebe, Joel <Joel.Wiebe@nrc.gov>
Subject:
[External_Sender] RE: RE: Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies
- Blake, Thank you for the update. Although I am out of the office today, I am available via cell phone at 734-972-4585 should there be a need to discuss any aspect of the audit further.
Sincerely, Rebecca L. Steinman Senior Regulatory Engineer Exelon - Cantera (630) 657-2831 - office (734) 972-4585 - cell From: Purnell, Blake <Blake.Purnell@nrc.gov>
Sent: Monday, December 31, 2018 8:08 AM To: Steinman, Rebecca L:(GenCo-Nuc) <Rebecca.Steinman@exeloncorp.com>
Cc: Gullott, David M.:(GenCo-Nuc) <David.Gullott@exeloncorp.com>; Wiebe, Joel <Joel.Wiebe@nrc.gov>
Subject:
RE: RE: Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies
- Rebecca, We would like to start at 9:00 am. We plan to issue the audit plan today or Wednesday.
- Thanks, Blake Purnell 1
ph: 301-415-1380 From: Steinman, Rebecca L:(GenCo-Nuc) [1]
Sent: Sunday, December 30, 2018 5:12 PM To: Purnell, Blake <Blake.Purnell@nrc.gov>
Cc: Gullott, David M.:(GenCo-Nuc) <David.Gullott@exeloncorp.com>; Wiebe, Joel <Joel.Wiebe@nrc.gov>
Subject:
[External_Sender] RE: Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies
- Blake, Westinghouse and Exelon can support an audit of the analyses that support the conclusions of the 12/18/18 Exelon supplement to the Byron ATF LAR on Friday, January 4, 2019 at the Westinghouse offices in Rockville. Westinghouse will be sending three people and Exelon will be sending one person to Rockville to support the audit. Additional people are available for a conference call or web-meeting should any questions require additional support. Please let me know the intended start time so that our side can make appropriate travel arrangements.
The address for the Westinghouse offices is provided below for convenience.
11333 Woodglen Drive Suite 202 Rockville, MD 20852 Let me know if you need any additional input at this time.
Sincerely, Rebecca L. Steinman, PhD, PE Sr. Regulatory Engineer Exelon Nuclear - Corporate Licensing 4300 Winfield Road - 4th Floor Warrenville, IL 60555 Office: 630-657-2831 l Fax: 630-657-4327 Rebecca.Steinman@exeloncorp.com l www.exeloncorp.com From: Purnell, Blake <Blake.Purnell@nrc.gov>
Sent: Friday, December 28, 2018 7:12 AM To: Steinman, Rebecca L:(GenCo-Nuc) <Rebecca.Steinman@exeloncorp.com>
Cc: Gullott, David M.:(GenCo-Nuc) <David.Gullott@exeloncorp.com>; Wiebe, Joel <Joel.Wiebe@nrc.gov>
Subject:
[EXTERNAL] Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies Importance: High
- Rebecca, The NRC staff has reviewed Exelons December 18 supplement to the subject LAR and would like to audit the related analysis. Specifically, the staff would like to review:
- 1) The analysis that determined that the ADOPT' LTAs will exceed the RSAC LHGR limit for Cycle 22 during a boron dilution transient, with rods in manual control, at the burnup step of 150 MWD/MTU.
- 2) The analysis to demonstrate the applicability and appropriateness of TS Safety Limit 2.1.1.3 as applied to ADOPT' fuel pellets, including how the melting point of this new fuel pellet has been determined.
To support the review schedule, the staff would like to conduct the audit as soon as possible (January 2, 3, or 4, if possible). If possible, the staff could conduct the audit at the Westinghouse office in Rockville.
2
Alternatively, the staff could use an electronic portal. The staff would need licensee/contractor personnel to be available to answer questions. Once the details are worked out we will issue an audit plan.
- Thanks, Blake Purnell, Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission ph: 301-415-1380 This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies.
Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -EXCIP 3
Hearing Identifier: NRR_DMPS Email Number: 763 Mail Envelope Properties (SN6PR0901MB24472AA450A3E54BCDAB24E88BB20)
Subject:
RE: RE: RE: Byron 2 LAR to use Accident Tolerant Fuel Lead Test Assemblies Sent Date: 12/31/2018 1:23:46 PM Received Date: 12/31/2018 1:23:00 PM From: Wiebe, Joel Created By: Joel.Wiebe@nrc.gov Recipients:
"Gullott, David M.:(GenCo-Nuc)" <David.Gullott@exeloncorp.com>
Tracking Status: None "Purnell, Blake" <Blake.Purnell@nrc.gov>
Tracking Status: None
"'Steinman, Rebecca L:(GenCo-Nuc)'" <Rebecca.Steinman@exeloncorp.com>
Tracking Status: None Post Office: SN6PR0901MB2447.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 5647 12/31/2018 1:23:00 PM Audit Plan R2.docx 22372 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
REGULATORY AUDIT OF BYRON STATION, UNIT 2 LICENCE AMENDMENT REQUEST TO ALLOW INSERTION OF ACCIDENT TOLERANT FUEL LEAD TEST ASSEMBLIES DOCKET NO. 50-455 BACKGROUND By letter dated March 8, 2018, as supplemented by letters dated July 2, 2018, and December 18, 2018, (Agencywide Documents Access and Management System (ADAMS) Accession Nos.
ML18067A431, ML18184A270, and ML18352B117) Exelon Generation Company, LLC (Exelon), the licensee, requested an amendment to the Byron Station, Unit 2, operating license that would allow accident tolerant fuel (ATF) lead test assemblies (LTAs) to be utilized at the plant. The proposed amendment would insert a license condition permitting the use of two such LTAs in Byron Unit 2 during cycles 22, 23, and 24.
The December 18 supplement identifies a transient analyzed in the UFSAR whereby the LTAs may be the limiting bundles in the core. The NRC has determined that a regulatory audit be conducted in accordance with the Nuclear Reactor Regulation (NRR) Office Instruction LIC-111, Regulatory Audits, on these calculations in order to expedite the review of this new development, given the short time available before the refueling outage.
REGULATORY AUDIT SCOPE The audit will focus on the following areas:
- 1) The analysis that determined that the ADOPT' LTAs will exceed the RSAC LHGR limit for Cycle 22 during a boron dilution transient, with rods in manual control, at the burnup step of 150 MWD/MTU.
- 2) The applicability and appropriateness of TS Safety Limit 2.1.1.3 as applied to ADOPT' fuel pellets, including how the melting point of this new fuel pellet has been determined.
- 3) How the currently proposed License Condition supports the LTA program described in the LAR and supplements. The staff has concerns that the license condition excludes the operation that is being requested.
The NRC staff requests that Exelon make available appropriate staff with detailed knowledge of these topics. These staff members should be able to address comprehension questions made by the NRC staff about the topical report in question as well as its references.
TEAM AND REVIEW ASSIGNMENTS Joshua Whitman, NRR/DSS/SNPB - Nuclear Performance and Code Review Branch - Lead Reviewer Paul Clifford, NRR/DSS - Senior Technical Advisor for Reactor Fuel Reed Anzalone, NRR/DSS/SRXB - Reactor Systems Branch
LOGISTICS The regulatory audit will be held on Friday January 4, 2019 at Westinghouses Rockville office:
11333 Woodglen Drive, Suite 202, Rockville, MD 20852 DELIVERABLES A regulatory audit summary will be provided within 21 days of the completion of the audit.