ML22109A179

Response OIG Special Inquiry Into NRCs Oversight AFW at Diablo Canyon (OIG Case No.20-025)

ML22109A179
Person / Time
Site:	Diablo Canyon
Issue date:	05/03/2022
From:	Dan Dorman NRC/EDO
To:	Feitel R NRC/OGC
Zachary Hollcraft NRR/DRO/IRIB 415-0504
Shared Package
ML22123A188	List: ML22108A165 ML22108A166 ML22108A167 ML22109A179
References
Download: ML22109A179 (3)

Text

MEMORANDUM TO:

Robert J. Feitel Inspector General FROM:

Daniel H. Dorman Executive Director for Operations

SUBJECT:

RESPONSE TO THE OFFICE OF THE INSPECTOR GENERALS EVENT INQUIRY INTO THE NUCLEAR REGULATORY COMMISSIONS OVERSIGHT OF THE AUXILIARY FEEDWATER SYSTEM AT DIABLO CANYON NUCLEAR POWER PLANT (OIG Case No.20-025)

The staff has reviewed the event inquiry by the Office of the Inspector General (OIG) into oversight at Diablo Canyon Nuclear Power Plant (DCNPP) and provided me with their findings regarding the information in the report (Agencywide Document Access Management System (ADAMS) Accession No. ML22108A161). The Office of Nuclear Reactor Regulation, the program office for the Reactor Oversight Process (ROP), and Region IV, the office responsible for implementation of the ROP at DCNPP, evaluated each of the OIGs findings and observations in the event inquiry by examining whether the U.S. Nuclear Regulatory Commission (NRC) inspectors followed NRC inspection procedures and COVID-19 guidance at the time of the event in order to determine if further NRC action is warranted.

After reviewing the event inquiry, the staff determined that the ROP and its associated inspection program continue to provide reasonable assurance of adequate protection of public health and safety. I have confidence in the qualification, abilities, and professionalism of the inspectors involved in this event inquiry. The staff recognizes and appreciates areas where the OIG report provided opportunities for the agency to improve our programs and processes.

The staff concluded the complete system walkdown that took place on DCNPPs auxiliary feedwater systems in April 2020 was done in accordance with inspection procedure (IP) 71111.04, Equipment Alignment (ADAMS Accession No. ML21032A255), and COVID-19 mitigation guidance and with the appropriate amount of resources. The staff recommended inspector training on corrosion under insulation and the Inspection Manual, specifically on understanding inspection objectives, requirements, and guidance, as well as a review of inspector qualifications for potential improvements.

CONTACT: Caty Nolan, OEDO 301-415-1535 May 3, 2022 Signed by Dorman, Dan on 05/03/22

The staff plans to review the IP to ensure its requirements and guidance are clear to internal and external stakeholders. The staff also plans to review the inspection program guidance to determine if additional direction or training should be included to ensure consistent inspection expectations for multiple unit sites.

Enclosure:

Staff Assessment of OIG Event Inquiry into the NRCs Oversight of the Auxiliary Feedwater System at Diablo Canyon Nuclear Power Plant, OIG Case No.20-025

PKG: ML22123A188, Memo: ML22109A179, Memo: 22108A161, Encl 1: ML22108A166, Encl 2: ML22108A167 OFFICE NRR/DRO/IRIB NRR/DRO/IRIB/BC QTE NRR/DRO/D NAME ZHollcraft THipschman JDougherty CMiller DATE 4/20/22 4/20/22 4/21/22 4/22/22 OFFICE R1 R2 R3 R4 NAME DLew LDudes (DPelton for)

JGeissner SMorris DATE 4/22/22 4/22/22 4/22/22 4/22/22 OFFICE NRR OEDO NAME M.King for AVeil DDorman DATE 4/22 /22 05/03 /22