ML23020A021
| ML23020A021 | |
| Person / Time | |
|---|---|
| Issue date: | 01/12/2023 |
| From: | Douglas Bollock NRC/NRR/DRO/IRAB |
| To: | |
| References | |
| Download: ML23020A021 (12) | |
Text
Inspection Procedure 71111.21M Comprehensive Engineering Team Inspection (CETI) Knowledge Management Session Douglas Bollock January 12, 2023 DRAFT
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Historical Background CETI is the Latest Iteration of Engineering Team Inspections That Began in 1985 as Safety System Functional Inspections Focused has Changed Over the Years in Response to Operating Experience, Industry Events and Probabilistic Insights Purpose is to Validate That Assumptions in the Technical Specifications and Final Safety Analysis Report are Valid 3
Historical Background
- History of Engineering Inspection Team Inspections (ML22129A127), SECY 22-0053 Enclosure 4
CETI History Based on an evaluation by the Engineering Inspection Working Group (EIWG) established in 2016, the recommendation was to combine:
- IP 71111.21M Design Bases Assurance Inspection (Team)
- IP 71111.17T Evaluations of Changes, Tests and Experiments
- IP 71111.07 Heat Exchanger/Sink Performance (triennial portions only)
The EIWG also recommended changing the engineering inspection cycle from a 3-yr to a 4-yr cycle.
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CETI History (continued)
- Staff informed the NRC Commission of staff intent to change to CETI, and recommended the 4-yr cycle in SECY 22-0053
- The NRC Commission approved the 4-yr engineering cycle in July 2022.
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So, whats changed?
- Besides CETI once every 4 years, Not much.
- Still inspecting SSCs and Modifications
- Option to inspect a HX/UHS or UHS containment/Damn as a system sample
- Added 50.59 samples
- 7 NRC inspectors (no contractors)
- 490 hours0.00567 days <br />0.136 hours <br />8.101852e-4 weeks <br />1.86445e-4 months <br /> of direct inspections 7
What has not Changed?
- NRC Engineering Inspections are still focused on verifying that licensee engineering activities do not inadvertently introduce latent conditions (e.g.,
unknown design deficiencies) into structures, systems, or components (SSCs) that are important to safety
- Inspection Hours/Effort Remains similar to Activities Conducted Using the Superseded Engineering Inspection Cycle 8
CETI Samples 9
Sample Requirements Minimum Baseline Sample Completion Requirements Budgeted Range Sample Type Section(s)
Frequency Sample Size (per site)
Samples (per site)
Hours per Site Structures, Systems, and Components (SSCs) 03.01 Quadrennially 7
10 - 15 490+ 74 Modifications 03.02 3
10 CFR 50.59 Evaluations/Screening 03.03 8
8-20 Operating Experience Samples 03.04 1
1-3
[1] Credit for a 10 CFR 50.59 sample can be taken if the modification includes a 10 CFR 50.59 evaluation.
What else should we know
- Otherwise, similar to preparing for DBAI (teams) inspections.
- Still risk inform samples
- Risk inform/utilize SRA support for sample selection
- 2 weeks onsite with an in-between week 10
Question: What Should Engineering Inspectors Do?
Answer: Find Problems-H. Miller Former NRC Region 1 Administrator 11
12 Questions?