ML18137A474
| ML18137A474 | |
| Person / Time | |
|---|---|
| Site: | 05200046 |
| Issue date: | 05/17/2018 |
| From: | Korea Electric Power Corp, Korea Hydro & Nuclear Power Co, Ltd |
| To: | Office of New Reactors |
| Shared Package | |
| ML18137A471 | List: |
| References | |
| KAW-18-0072, MKD/NW-18-0072L | |
| Download: ML18137A474 (4) | |
Text
18-18_Rev.1 - 1 / 2 KEPCO/KHNP Non-Proprietary REVISED RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION APR1400 Design Certification Korea Electric Power Corporation / Korea Hydro & Nuclear Power Co., LTD Docket No.52-046 RAI No.:
128-7980 SRP Section:
18 - Human Factors Engineering Application Section:
18.6 Treatment of Important Human Actions (TIHAs)
Date of RAI Issue:
08/05/2015 Question No. 18-18 Section 4.2, Deterministically-Important Human Actions Analyses, of the TIHA IP discusses a relationship between Type A variables (as described in IEEE Std. 497-2002) and DIHAs identified in the transient and accident analysis in DCD Chapter 15.
The staff reviewed the TAA in DCD Chapter 15 and did not find any discussion of Type A variables. Additionally, DCD Chapter 7, Section 7.5.1.1, Accident Monitoring Instrumentation, (AMI) states, There are no AMI Type A variables in the APR1400 design.
Clarify whether or not Type A variables are used to identify DIHAs.
If they are used, describe how.
Revise the submittal to reflect the RAI response.
Response - (Rev.1)
To clarify potential discrepancies between the DIHAs that will be identified in the TIHA results summary report (ReSR), Type A variables identified in Chapter 7, and the resolution of that potential discrepancy, Section 3.2 of the TIHA Implementation Plan (APR1400-E-I-NR-14006-NP) has been revised, as indicated in the Attachment to the Rev.0 response.
Based on the clarifications in the Attachment to the Rev.0 response, Chapter 7 of the DCD identifies only the minimum set of accident monitoring variables. If the TIHA program element (PE) identifies deterministically identified important human actions (DIHAs) from the transient and accident analysis (TAA), and the task analysis (TA) program element (PE) identifies the need for additional accident monitoring variables to execute those DIHAs, including Type A variables, the discrepancy will be resolved through the human engineering discrepancy (HED) resolution process.
18-18_Rev.1 - 2 / 2 KEPCO/KHNP Non-Proprietary Additionally, redundant statements and typing errors in Section 3.2 of the TIHA Implementation Plan, Rev.2 will be corrected as indicated in the Attachment associated with this response.
Impact on DCD There is no impact on the DCD.
Impact on PRA There is no impact on the PRA.
Impact on Technical Specifications There is no impact on the Technical Specifications.
Impact on Technical/Topical/Environmental Reports Technical report APR1400-E-I-NR-14006-NP, Rev.2, Treatment of Important Human Actions Implementation Plan, Section 3.2 will be revised, as indicated in the Attachment associated with this response.
TIHA Implementation Plan APR1400-E-I-NR-14006-NP, Rev.2 KEPCO & KHNP 4
Non-Proprietary 3.1 Risk-Important Human Actions 3.2 Deterministically-Important Human Actions TS TS RAI 128-7980 - Question 18-18_Rev.1 Attachment (1/2)
TIHA Implementation Plan APR1400-E-I-NR-14006-NP, Rev.2 KEPCO & KHNP 5
Non-Proprietary 3.3 Independent Review 3.4 TIHA Interfaces with Other HFE Program Elements 3.5 Operating Experience Review 3.5.1 Functional Requirements Analysis and Function Allocation TS TS TS TS TS RAI 128-7980 - Question 18-18_Rev.1 Attachment (2/2)