Sunday, June 7, 2020

2020/05/22 NRR E-mail Capture - Exelon Generation Company, LLC - Request for an Alternative to Use ASME Code Case N-885 (EPID L-2020-LLR-0069)

Mr. Loomis:

By application dated April 28, 2020 (ADAMS Accession No. ML20119B061), Exelon Generation
Company, LLC (the licensee) submitted a request in accordance with Paragraph 50.55a(z)(1) of
Title 10 of the Code of Federal Regulations (10 CFR) for a proposed alternative to the
requirements of 10 CFR 50.55a and the American Society of Mechanical Engineers (ASME)
Code at Braidwood Station, Units 1 and 2; Byron Station, Unit Nos. 1 and 2; Calvert Cliffs
Nuclear Power Plant, Units 1 and 2; and R. E. Ginna Nuclear Power Plant The proposed
alternative would allow the licensee to use ASME Code Case N-885, “Alternative Requirements
for Table IWB-2500-1, Examination Category B-N-1, Interior of Reactor Vessel, Category B-N-2,
Welded Core Support Structures and Interior Attachments to Reactor Vessels, Category B-N-3,
Removable Core Support Structures Section XI, Division 1,” at these facilities.


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