AEP-NRC-2020-71, Indiana Michigan Power Co., Supplement to Request for Relief Related to American Society of Mechanical Engineers (Asme)Code Case N-729-6 Supplemental Examination Requirements, ISIR-5-04

Indiana Michigan Power Co., Supplement to Request for Relief Related to American Society of Mechanical Engineers (Asme)Code Case N-729-6 Supplemental Examination Requirements, ISIR-5-04

ML20287A435
Person / Time
Site:	Cook
Issue date:	10/09/2020
From:	Lies Q Indiana Michigan Power Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
AEP-NRC-2020-71
Download: ML20287A435 (22)

Text

a:

INOIJ&NA MICHIGAN POWE*

A unit of American Electric Power October 9, 2020 Docket No.:

50-315 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Indiana Michigan Power Caok Nuclear Plant One Cook Plact Bridginan, Ml 49108 lndianeMlchiganPowar.com AEP-NRC-2020-71 10 CFR 50.55a Supplement to Request for Relief Related to American Society of Mechanical Engineers (ASME)

Code Case N-729-6 Supplemental Examination Requirements, ISIR-5-04

Reference:

Letter from Q. S. Lies, Indiana Michigan Power Company to U. S. Nuclear Regulatory Commission, "Request for Relief related to American Society of Mechanical Engineers (ASME) Code Case N-729-6 Supplemental Examination Requirements, ISIR-5-04," dated October 5, 2020, (ADAMS Accession No. ML20279A713).

By the Reference letter, pursuant to 10 CFR 50.55a(z)(2), Indiana Michigan Power Company (l&M),

the licensee for Donald C. Cook Nuclear Plant (CNP) Unit 1, requested that the Nuclear Regulatory Commission (NRC) approve an alternative to Code Case N-729-6.for CNP Unit 1. At the time the relief request was submitted, l&M had not completed the CO2 cleaning and.subsequent visual examination (VE) required by Code Case N-729-6 Paragraph -3142.1 (b)(2).

The purpose of this supplement Is to provide the photographs of the U1 reactor vessel closure head (RVCH) and provide the post CO2 cleaning update of the results of the subsequent VE.

l&M performed C~ cleaning and VE on the 17 specific penetrations and general surfaces identified In the Reference letter to have relevant conditions. The subsequent VE found no relevant conditions In the identified areas specified in the Reference letter, of the RVCH. The enclosure to this letter provides photographs of both the pre-CD2 cleaning condition and final condition following ~

cleaning of the RVCH.

l&M requested approval of the proposed relief request prior to entry into Mode 2. Mode 2 is now scheduled to occur earty on October 15, 2020. l&M is still requesting approval of the relief request on the original date of October 14, 2020.

U.S. Nuclear Regulatory Commission Page2 AEP-NRC-2020-71 There are no new commitments In this letter. Should you have any questions, please contact Mr.

Michael K. Scarpello, Director of Regulatory Affairs, at (269) 466-2649.

Sincerely, Q. hane Lies Site Vice President DLW/kmh

Enclosure:

Final Photographs of the CNP Unit 1 Reactor Vessel Closure Head (RVCH)

U. S. Nuclear Regulatory Commission Page3 c:

R. J. Ancona - MPSC EGLE - RMD/RPS J. B. Giessner - NRC Region Ill NRC Resident Inspector S. P. Wall - NRC Washington, D.C.

A. J. Williamson - AEP Ft. Wayne, w/o enclosures AEP-NRC-2020-71

Enclosure to AEP-NRC-2020-71 Final Photographs of the CNP Unit 1 Reactor Vessel Closure Head (RVCH)

L__

Enclosure to AEP-NRC-2020-71 Page 1 of 18 As Found Photo U1 C30 RVCH Inspection Photos Penetration Number 1

~

As Left Photo

Enclosure to AEP-NRC-2020-71 Page 2of 18 As Found Photo U1C30 RVCH Inspection Photos Penetration Number 7 As Left Photo

Enclosure to AEP-NRC-2020-71 Page 3of18 U1C30 RVCH Inspection Photos Penetration Number 8 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page4 of 18 As Found Photo U1 C30 RVCH Inspection Photos Penetration Number 10 lVI MIMIIIJ~um**

As Left Photo

Enclosure to AEP-NRC-2020-71 Pages of 1a U1 C30 RVCH Inspection Photos Penetration Number 22 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page6of 18 As Found Photo U 1 C30 RVCH Inspection Photos Penetration Number 23 QOO@IIJW~

~*

As Left Photo

Enclosure to AEP-NRC-2020-71 Page 7 of 18 As Found Photo U 1 C30 RVC H Inspection Photos Penetration Number 39 As Left Photo

Enclosure to AEP-NRC-2020-71 Page 8 of 18 As Found Photo U 1 C30 RVCH Inspection Photos Penetration Number 46 As Left Photo

Enclosure to AEP-NRC-2020-71 Page got 1a U 1 C30 RVCH Inspection Photos Penetration Number 59 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 100, 1s U1C30 RVCH Inspection Photos Penetration Number 62 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 11 of 18 As Found Photo U1 C30 RVCH Inspection Photos Penetration Number 64 As Left Photo

Enclosure to AEP-NRC-2020-71 Page 12ot1a U1C30 RVCH Inspection Photos Penetration Number 70 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 13of1B U1C30 RVCH Inspection Photos Penetration Number 7 4 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 14 of 1s U1 C30 RVCH Inspection Photos Penetration Number 75 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 1s of 1a U1 C30 RVCH Inspection Photos Penetration Number 76 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 1so11e U1C30 RVCH Inspection Photos Penetration Number 77 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 11ot1e U1C30 RVCH Inspection Photos Penetration Number 79 As Found Photo As Left Photo

Enclosure to AEP-NRC-2020-71 Page 18 of 18 As Found Photo U1 C30 RVCH Inspection Photos RVCH Surfaces As Left Photo